// js/channelProfile.js

import { nostrClient } from "./nostrClientFacade.js";
import { convertEventToVideo as sharedConvertEventToVideo } from "./nostr/index.js";
import { DEFAULT_RELAY_URLS } from "./nostr/toolkit.js";
import { subscriptions } from "./subscriptions.js";
import { attachHealthBadges } from "./gridHealth.js";
import { attachUrlHealthBadges } from "./urlHealthObserver.js";
import { accessControl } from "./accessControl.js";
import { getApplication } from "./applicationContext.js";
import { escapeHTML } from "./utils/domUtils.js";
import { formatShortNpub } from "./utils/formatters.js";
import createPopover from "./ui/overlay/popoverEngine.js";
import { VideoCard } from "./ui/components/VideoCard.js";
import { createChannelProfileMenuPanel } from "./ui/components/videoMenuRenderers.js";
import { ALLOW_NSFW_CONTENT } from "./config.js";
import { sanitizeProfileMediaUrl } from "./utils/profileMedia.js";
import moderationService from "./services/moderationService.js";
import { createModerationStage } from "./feedEngine/stages.js";
import {
  DEFAULT_AUTOPLAY_BLOCK_THRESHOLD,
  DEFAULT_BLUR_THRESHOLD,
  DEFAULT_TRUSTED_MUTE_HIDE_THRESHOLD,
  DEFAULT_TRUSTED_SPAM_HIDE_THRESHOLD,
} from "./constants.js";
import {
  applyModerationContextDatasets,
  getModerationOverrideActionLabels,
  normalizeVideoModerationContext,
} from "./ui/moderationUiHelpers.js";
import { buildModerationBadgeText } from "./ui/moderationCopy.js";
import {
  calculateZapShares,
  describeShareType,
  fetchLightningMetadata,
  formatMinRequirement,
  getCachedLightningEntry,
  getCachedMetadataByUrl,
  getCachedPlatformLightningAddress,
  isZapAllowanceExhaustedError,
  isMetadataEntryFresh,
  normalizeLightningAddressKey,
  rememberLightningMetadata,
  setCachedPlatformLightningAddress,
  buildZapAllowanceExhaustedMessage,
  validateInvoiceAmount
} from "./payments/zapSharedState.js";
import { splitAndZap } from "./payments/zapSplit.js";
import { showLoginRequiredToZapNotification } from "./payments/zapNotifications.js";
import {
  resolveLightningAddress,
  fetchPayServiceData,
  requestInvoice
} from "./payments/lnurl.js";
import { getPlatformLightningAddress } from "./payments/platformAddress.js";
import { devLogger, userLogger } from "./utils/logger.js";
import {
  ensureWallet,
  sendPayment as sendWalletPayment,
  resetWalletClient
} from "./payments/nwcClient.js";
import {
  prepareStaticModal,
  openStaticModal
} from "./ui/components/staticModalAccessibility.js";
import { setModalState as setGlobalModalState } from "./state/appState.js";
import { attachFeedInfoPopover } from "./ui/components/FeedInfoPopover.js";

const getApp = () => getApplication();

const SVG_NAMESPACE = "http://www.w3.org/2000/svg";
const CHANNEL_MODERATION_BADGE_ID = "channel-moderation-badge";

let currentChannelModerationSourceVideo = null;

const channelModerationBadgeState = {
  container: null,
  badgeEl: null,
  labelEl: null,
  textEl: null,
  iconSvg: null,
  iconWrapper: null,
  overrideButton: null,
  hideButton: null,
  blockButton: null,
  boundOverride: null,
  boundHide: null,
  boundBlock: null,
  badgeId: "",
  app: null,
};

const channelVideoCardsById = new Map();
let channelBannerStyleCounter = 0;
const channelBannerStyleRegistry = new WeakMap();

function getChannelBannerStyleState(doc) {
  if (!doc || typeof doc.createElement !== "function") {
    return null;
  }
  const existing = channelBannerStyleRegistry.get(doc);
  if (existing) {
    return existing;
  }
  let styleNode = doc.getElementById?.("channelBannerStyles") || null;
  if (!(styleNode instanceof HTMLStyleElement)) {
    styleNode = doc.createElement("style");
    styleNode.id = "channelBannerStyles";
    doc.head?.appendChild(styleNode);
  }
  const state = {
    styleNode,
    rules: new Map(),
  };
  channelBannerStyleRegistry.set(doc, state);
  return state;
}

function updateChannelBannerBackground(el, url) {
  const doc = el?.ownerDocument || (typeof document !== "undefined" ? document : null);
  const state = getChannelBannerStyleState(doc);
  if (!state || !el) {
    return;
  }

  if (!el.dataset.channelBannerStyleId) {
    channelBannerStyleCounter += 1;
    el.dataset.channelBannerStyleId = `channel-banner-${channelBannerStyleCounter}`;
  }
  const selector = `[data-channel-banner-style-id="${el.dataset.channelBannerStyleId}"]`;

  if (url) {
    const escaped = url.replace(/(["\\])/g, "\\$1");
    state.rules.set(selector, `${selector} { background-image: url("${escaped}"); }`);
  } else {
    state.rules.set(selector, `${selector} { background-image: none; }`);
  }

  state.styleNode.textContent = [...state.rules.values()].join("\n");
}

export function clearChannelVideoCardRegistry() {
  channelVideoCardsById.clear();
}

let currentChannelHex = null;
let currentChannelNpub = null;
let currentChannelLightningAddress = "";
let channelZapPendingOpen = false;

function normalizeHex(value) {
  if (typeof value !== "string") {
    return "";
  }
  const trimmed = value.trim().toLowerCase();
  return /^[0-9a-f]{64}$/.test(trimmed) ? trimmed : "";
}

function decodeNpubToHex(npub) {
  if (typeof npub !== "string" || !npub.trim()) {
    return "";
  }
  try {
    const decoded = window?.NostrTools?.nip19?.decode?.(npub);
    if (decoded?.type !== "npub" || !decoded.data) {
      return "";
    }
    if (typeof decoded.data === "string") {
      return normalizeHex(decoded.data);
    }

    let bufferSource = null;
    if (decoded.data instanceof Uint8Array) {
      bufferSource = decoded.data;
    } else if (Array.isArray(decoded.data)) {
      bufferSource = Uint8Array.from(decoded.data);
    } else if (
      decoded.data?.type === "Buffer" &&
      Array.isArray(decoded.data?.data)
    ) {
      bufferSource = Uint8Array.from(decoded.data.data);
    }

    if (!bufferSource) {
      return "";
    }

    if (typeof window?.NostrTools?.utils?.bytesToHex === "function") {
      return normalizeHex(window.NostrTools.utils.bytesToHex(bufferSource));
    }
    return normalizeHex(
      Array.from(bufferSource)
        .map((byte) => byte.toString(16).padStart(2, "0"))
        .join("")
    );
  } catch (error) {
    devLogger.warn("[ChannelProfile] Failed to decode npub to hex", error);
    return "";
  }
}

function decorateChannelVideo(video, app = getApp()) {
  if (!video || typeof video !== "object") {
    return null;
  }

  let decoratedVideo = video;

  if (typeof app?.decorateVideoModeration === "function") {
    try {
      const decorated = app.decorateVideoModeration(video);
      if (decorated && typeof decorated === "object") {
        decoratedVideo = decorated;
      }
    } catch (error) {
      devLogger.warn(
        "[ChannelProfile] Failed to decorate channel video moderation",
        error,
      );
    }
  }

  if (typeof app?.decorateVideoCreatorIdentity === "function") {
    try {
      const identityDecorated = app.decorateVideoCreatorIdentity(decoratedVideo);
      if (identityDecorated && typeof identityDecorated === "object") {
        decoratedVideo = identityDecorated;
      }
    } catch (error) {
      devLogger.warn(
        "[ChannelProfile] Failed to decorate channel video identity",
        error,
      );
    }
  }

  return decoratedVideo;
}

function collectChannelVideos(pubkey, app = getApp()) {
  if (!app || !(app.videosMap instanceof Map)) {
    return [];
  }

  const normalized = normalizeHex(pubkey);
  if (!normalized) {
    return [];
  }

  const matches = [];
  app.videosMap.forEach((video) => {
    if (!video || typeof video !== "object") {
      return;
    }
    const videoPubkey = normalizeHex(video.pubkey);
    if (videoPubkey === normalized) {
      matches.push(video);
    }
  });

  return matches;
}

async function applyChannelModerationToVideos(videos = [], app = getApp()) {
  if (!Array.isArray(videos) || videos.length === 0) {
    return Array.isArray(videos) ? videos : [];
  }

  const resolvedApp = app || getApp();

  const resolveThreshold = (value, fallback) => {
    if (value === Number.POSITIVE_INFINITY) {
      return Number.POSITIVE_INFINITY;
    }
    if (Number.isFinite(value)) {
      return Math.max(0, Math.floor(value));
    }
    return fallback;
  };

  const thresholds =
    typeof resolvedApp?.getActiveModerationThresholds === "function"
      ? resolvedApp.getActiveModerationThresholds()
      : null;

  const stage = createModerationStage({
    getService: () => {
      try {
        if (
          resolvedApp?.nostrService &&
          typeof resolvedApp.nostrService.getModerationService === "function"
        ) {
          return resolvedApp.nostrService.getModerationService();
        }
      } catch (error) {
        devLogger.warn(
          "[ChannelProfile] Failed to resolve channel moderation service",
          error,
        );
      }
      return null;
    },
    autoplayThreshold: resolveThreshold(
      thresholds?.autoplayBlockThreshold,
      DEFAULT_AUTOPLAY_BLOCK_THRESHOLD,
    ),
    blurThreshold: resolveThreshold(
      thresholds?.blurThreshold,
      DEFAULT_BLUR_THRESHOLD,
    ),
    trustedMuteHideThreshold: resolveThreshold(
      thresholds?.trustedMuteHideThreshold,
      DEFAULT_TRUSTED_MUTE_HIDE_THRESHOLD,
    ),
    trustedReportHideThreshold: resolveThreshold(
      thresholds?.trustedSpamHideThreshold,
      DEFAULT_TRUSTED_SPAM_HIDE_THRESHOLD,
    ),
  });

  let stageResult;
  try {
    const items = videos.map((video) => ({ video, metadata: {} }));
    stageResult = await stage(items, { feedName: "channel-profile" });
  } catch (error) {
    devLogger.warn(
      "[ChannelProfile] Failed to apply moderation stage to channel videos",
      error,
    );
    return videos;
  }

  if (!Array.isArray(stageResult)) {
    return videos;
  }

  const decoratedVideos = [];

  for (const item of stageResult) {
    if (!item || typeof item !== "object") {
      continue;
    }

    const video = item.video;
    if (!video || typeof video !== "object") {
      continue;
    }

    const metadataModeration =
      item.metadata &&
      typeof item.metadata === "object" &&
      item.metadata.moderation &&
      typeof item.metadata.moderation === "object"
        ? item.metadata.moderation
        : null;

    if (metadataModeration) {
      if (!video.moderation || typeof video.moderation !== "object") {
        video.moderation = {};
      }
      Object.assign(video.moderation, metadataModeration);
    }

    decoratedVideos.push(decorateChannelVideo(video, resolvedApp) || video);
  }

  return decoratedVideos;
}

function buildChannelModerationFallback(pubkey) {
  const normalized = normalizeHex(pubkey);
  if (!normalized) {
    return null;
  }

  let viewerMuted = false;
  try {
    viewerMuted = moderationService.isAuthorMutedByViewer(normalized) === true;
  } catch (error) {
    devLogger.warn(
      "[ChannelProfile] Failed to resolve viewer mute state for channel",
      error,
    );
  }

  let trustedMuted = false;
  let trustedMuters = [];
  try {
    if (typeof moderationService.isAuthorMutedByTrusted === "function") {
      trustedMuted =
        moderationService.isAuthorMutedByTrusted(normalized) === true;
    }
    if (trustedMuted) {
      if (typeof moderationService.getTrustedMutersForAuthor === "function") {
        const muters =
          moderationService.getTrustedMutersForAuthor(normalized) || [];
        if (Array.isArray(muters)) {
          trustedMuters = muters;
        }
      }
    }
  } catch (error) {
    devLogger.warn(
      "[ChannelProfile] Failed to resolve trusted mute state for channel",
      error,
    );
    trustedMuted = false;
    trustedMuters = [];
  }

  if (!viewerMuted && !trustedMuted) {
    return null;
  }

  const trustedMuteCount = Array.isArray(trustedMuters)
    ? trustedMuters.length
    : 0;

  const fallback = {
    trustedMuted,
    trustedMuters: Array.isArray(trustedMuters) ? trustedMuters.slice() : [],
    trustedMuteCount,
  };

  if (viewerMuted) {
    fallback.blurThumbnail = true;
    fallback.blurReason = "viewer-mute";
    fallback.hidden = true;
    fallback.hideReason = "viewer-mute";
    fallback.hideCounts = {
      trustedMuteCount,
      trustedReportCount: 0,
    };
  } else if (trustedMuted) {
    fallback.blurThumbnail = true;
    fallback.blurReason = "trusted-mute";
  }

  fallback.original = {
    blockAutoplay: fallback.blockAutoplay === true,
    blurThumbnail: fallback.blurThumbnail === true,
    hidden: fallback.hidden === true,
    hideReason: fallback.hideReason || "",
    hideCounts: fallback.hideCounts ? { ...fallback.hideCounts } : undefined,
    hideBypass: fallback.hideBypass || "",
    hideTriggered:
      fallback.hidden === true || Boolean(fallback.hideReason) || false,
    blurReason: fallback.blurReason || "",
  };

  return fallback;
}

function getChannelModerationState(context) {
  if (!context) {
    return "";
  }
  if (context.overrideActive) {
    return "override";
  }
  if (context.activeHidden && !context.overrideActive) {
    return "hidden";
  }
  if (context.trustedMuted) {
    return "trusted-mute";
  }
  return "blocked";
}

function shouldShowChannelBlockButton(context) {
  if (!context || !context.trustedMuted) {
    return false;
  }
  if (context.activeHidden && !context.overrideActive) {
    return false;
  }
  return true;
}

function getChannelModerationBadgeIconShape(state) {
  if (state === "override") {
    return {
      d: "M10 18a8 8 0 100-16 8 8 0 000 16zm3.78-9.72a.75.75 0 00-1.06-1.06L9 11.94l-1.72-1.72a.75.75 0 10-1.06 1.06l2.25 2.25a.75.75 0 001.06 0l3.25-3.25z",
      fillRule: "evenodd",
      clipRule: "evenodd",
    };
  }

  return {
    d: "M10 18a8 8 0 100-16 8 8 0 000 16zm-.75-11.75a.75.75 0 011.5 0v4.5a.75.75 0 01-1.5 0v-4.5zm.75 8.5a1 1 0 100-2 1 1 0 000 2z",
    fillRule: "evenodd",
    clipRule: "evenodd",
  };
}

function updateChannelModerationBadgeIcon(svg, state) {
  if (!svg) {
    return;
  }
  svg.dataset.iconState = state;
  const path = svg.firstElementChild;
  if (!path) {
    return;
  }
  const { d, fillRule, clipRule } = getChannelModerationBadgeIconShape(state);
  path.setAttribute("d", d);
  if (fillRule) {
    path.setAttribute("fill-rule", fillRule);
  } else {
    path.removeAttribute("fill-rule");
  }
  if (clipRule) {
    path.setAttribute("clip-rule", clipRule);
  } else {
    path.removeAttribute("clip-rule");
  }
}

function createChannelModerationBadgeIcon(doc, state) {
  const wrapper = doc.createElement("span");
  wrapper.className = "moderation-badge__icon";
  wrapper.setAttribute("aria-hidden", "true");
  const svg = doc.createElementNS(SVG_NAMESPACE, "svg");
  svg.setAttribute("viewBox", "0 0 20 20");
  svg.setAttribute("focusable", "false");
  svg.setAttribute("aria-hidden", "true");
  svg.classList.add("moderation-badge__icon-mark");
  const path = doc.createElementNS(SVG_NAMESPACE, "path");
  path.setAttribute("fill", "currentColor");
  svg.appendChild(path);
  wrapper.appendChild(svg);
  updateChannelModerationBadgeIcon(svg, state);
  return { wrapper, svg };
}

function getChannelModerationBadgeContainer(doc = typeof document !== "undefined" ? document : null) {
  if (!doc || typeof doc.getElementById !== "function") {
    return null;
  }
  channelModerationBadgeState.container = doc.getElementById("channelModerationBadge") || null;
  return channelModerationBadgeState.container;
}

function ensureChannelModerationBadgeResources(doc) {
  const container = getChannelModerationBadgeContainer(doc);
  if (!container) {
    return null;
  }

  if (!channelModerationBadgeState.badgeEl) {
    const badge = doc.createElement("div");
    badge.className = "moderation-badge";
    badge.dataset.moderationBadge = "true";
    const label = doc.createElement("span");
    label.className = "moderation-badge__label inline-flex items-center gap-xs";
    const { wrapper, svg } = createChannelModerationBadgeIcon(doc, "blocked");
    label.appendChild(wrapper);
    const text = doc.createElement("span");
    text.className = "moderation-badge__text";
    label.appendChild(text);
    badge.appendChild(label);
    channelModerationBadgeState.badgeEl = badge;
    channelModerationBadgeState.labelEl = label;
    channelModerationBadgeState.textEl = text;
    channelModerationBadgeState.iconWrapper = wrapper;
    channelModerationBadgeState.iconSvg = svg;
  }

  if (typeof channelModerationBadgeState.boundOverride !== "function") {
    channelModerationBadgeState.boundOverride = (event) =>
      handleChannelModerationOverride(event);
  }

  if (typeof channelModerationBadgeState.boundBlock !== "function") {
    channelModerationBadgeState.boundBlock = (event) =>
      handleChannelModerationBlock(event);
  }

  if (!channelModerationBadgeState.overrideButton) {
    const { text: overrideLabel, ariaLabel: overrideAria } =
      getModerationOverrideActionLabels({ overrideActive: false });
    const button = doc.createElement("button");
    button.type = "button";
    button.className = "moderation-badge__action flex-shrink-0";
    button.dataset.moderationAction = "override";
    button.textContent = overrideLabel;
    button.setAttribute("aria-label", overrideAria);
    button.addEventListener("click", channelModerationBadgeState.boundOverride);
    channelModerationBadgeState.overrideButton = button;
  }

  if (typeof channelModerationBadgeState.boundHide !== "function") {
    channelModerationBadgeState.boundHide = (event) =>
      handleChannelModerationHide(event);
  }

  if (!channelModerationBadgeState.hideButton) {
    const { text: restoreLabel, ariaLabel: restoreAria } =
      getModerationOverrideActionLabels({ overrideActive: true });
    const hideButton = doc.createElement("button");
    hideButton.type = "button";
    hideButton.className = "moderation-badge__action flex-shrink-0";
    hideButton.dataset.moderationAction = "hide";
    hideButton.textContent = restoreLabel;
    hideButton.setAttribute("aria-label", restoreAria);
    hideButton.addEventListener("click", channelModerationBadgeState.boundHide);
    channelModerationBadgeState.hideButton = hideButton;
  }

  if (!channelModerationBadgeState.blockButton) {
    const blockButton = doc.createElement("button");
    blockButton.type = "button";
    blockButton.className = "moderation-badge__action flex-shrink-0";
    blockButton.dataset.moderationAction = "block";
    blockButton.textContent = "Block";
    blockButton.addEventListener("click", channelModerationBadgeState.boundBlock);
    channelModerationBadgeState.blockButton = blockButton;
  }

  return channelModerationBadgeState;
}

function teardownChannelModerationBadge() {
  const ref = channelModerationBadgeState;
  currentChannelModerationSourceVideo = null;
  if (ref.badgeEl && ref.badgeEl.parentNode) {
    ref.badgeEl.parentNode.removeChild(ref.badgeEl);
  }
  ref.labelEl = null;
  if (ref.container) {
    ref.container.removeAttribute("data-moderation-active");
  }
  ref.app = null;
}

function renderChannelModerationBadge({
  context = null,
  video = null,
  app = null,
  doc = typeof document !== "undefined" ? document : null,
} = {}) {
  const container = getChannelModerationBadgeContainer(doc);
  if (!container) {
    teardownChannelModerationBadge();
    return;
  }

  const normalizedContext = context || null;
  const shouldShow = Boolean(normalizedContext?.shouldShow);

  currentChannelModerationSourceVideo =
    video && typeof video === "object" && typeof video.id === "string"
      ? video
      : null;

  if (!shouldShow) {
    teardownChannelModerationBadge();
    return;
  }

  const ref = ensureChannelModerationBadgeResources(doc);
  if (!ref || !ref.badgeEl || !ref.textEl) {
    teardownChannelModerationBadge();
    return;
  }

  const badge = ref.badgeEl;
  const state = normalizedContext.overrideActive
    ? "override"
    : getChannelModerationState(normalizedContext);

  badge.dataset.variant = normalizedContext.overrideActive ? "neutral" : "warning";
  badge.dataset.moderationState = state;
  if (normalizedContext.effectiveHideReason) {
    badge.dataset.moderationHideReason = normalizedContext.effectiveHideReason;
  } else if (badge.dataset.moderationHideReason) {
    delete badge.dataset.moderationHideReason;
  }

  updateChannelModerationBadgeIcon(ref.iconSvg, state);

  const textContent =
    buildModerationBadgeText(normalizedContext, { variant: "card" }) ||
    "Moderated due to reports";
  ref.textEl.textContent = textContent;

  if (CHANNEL_MODERATION_BADGE_ID) {
    badge.id = CHANNEL_MODERATION_BADGE_ID;
  }

  if (badge.parentNode !== container) {
    container.appendChild(badge);
  }

  container.dataset.moderationActive = "true";

  const hasVideoTarget = Boolean(currentChannelModerationSourceVideo?.id);

  if (
    hasVideoTarget &&
    !normalizedContext.overrideActive &&
    normalizedContext.allowOverride &&
    ref.overrideButton
  ) {
    const { text: overrideLabel, ariaLabel: overrideAria } =
      getModerationOverrideActionLabels({ overrideActive: false });
    ref.overrideButton.textContent = overrideLabel;
    ref.overrideButton.setAttribute("aria-label", overrideAria);
    if (ref.overrideButton.parentNode !== badge) {
      badge.appendChild(ref.overrideButton);
    }
    ref.overrideButton.disabled = false;
    ref.overrideButton.removeAttribute("aria-busy");
  } else if (ref.overrideButton && ref.overrideButton.parentNode === badge) {
    badge.removeChild(ref.overrideButton);
  }

  if (hasVideoTarget && normalizedContext.overrideActive && ref.hideButton) {
    const { text: restoreLabel, ariaLabel: restoreAria } =
      getModerationOverrideActionLabels({ overrideActive: true });
    ref.hideButton.textContent = restoreLabel;
    ref.hideButton.setAttribute("aria-label", restoreAria);
    if (ref.hideButton.parentNode !== badge) {
      badge.appendChild(ref.hideButton);
    }
    ref.hideButton.disabled = false;
    ref.hideButton.removeAttribute("aria-busy");
  } else if (ref.hideButton && ref.hideButton.parentNode === badge) {
    badge.removeChild(ref.hideButton);
  }

  if (hasVideoTarget && shouldShowChannelBlockButton(normalizedContext) && ref.blockButton) {
    if (ref.blockButton.parentNode !== badge) {
      badge.appendChild(ref.blockButton);
    }
    ref.blockButton.disabled = false;
    ref.blockButton.removeAttribute("aria-busy");
  } else if (ref.blockButton && ref.blockButton.parentNode === badge) {
    badge.removeChild(ref.blockButton);
  }

  if (ref.overrideButton) {
    if (badge.id) {
      ref.overrideButton.setAttribute("aria-describedby", badge.id);
    } else {
      ref.overrideButton.removeAttribute("aria-describedby");
    }
  }

  if (ref.hideButton) {
    if (badge.id) {
      ref.hideButton.setAttribute("aria-describedby", badge.id);
    } else {
      ref.hideButton.removeAttribute("aria-describedby");
    }
  }

  if (ref.blockButton) {
    if (badge.id) {
      ref.blockButton.setAttribute("aria-describedby", badge.id);
    } else {
      ref.blockButton.removeAttribute("aria-describedby");
    }
  }

  ref.badgeId = badge.id || "";
  ref.app = app || getApp();
}

function handleChannelModerationOverride(event) {
  if (event) {
    if (typeof event.preventDefault === "function") {
      event.preventDefault();
    }
    if (typeof event.stopPropagation === "function") {
      event.stopPropagation();
    }
  }

  const sourceVideo = currentChannelModerationSourceVideo;
  const app = channelModerationBadgeState.app || getApp();
  const targetVideo =
    app?.videosMap instanceof Map && sourceVideo?.id
      ? app.videosMap.get(sourceVideo.id) || sourceVideo
      : sourceVideo;

  if (!targetVideo || typeof targetVideo !== "object" || !targetVideo.id) {
    return;
  }

  const button = channelModerationBadgeState.overrideButton;
  if (button) {
    button.disabled = true;
    button.setAttribute("aria-busy", "true");
  }

  let handled = false;
  try {
    handled = app?.handleModerationOverride?.({ video: targetVideo }) === true;
  } catch (error) {
    devLogger.warn("[ChannelProfile] Failed to handle channel moderation override", error);
  }

  if (handled) {
    updateChannelModerationVisuals({ app, pubkey: sourceVideo?.pubkey || currentChannelHex || "" });
  } else if (button) {
    button.disabled = false;
    button.removeAttribute("aria-busy");
  }
}

function handleChannelModerationHide(event) {
  if (event) {
    if (typeof event.preventDefault === "function") {
      event.preventDefault();
    }
    if (typeof event.stopPropagation === "function") {
      event.stopPropagation();
    }
  }

  const sourceVideo = currentChannelModerationSourceVideo;
  const app = channelModerationBadgeState.app || getApp();
  const targetVideo =
    app?.videosMap instanceof Map && sourceVideo?.id
      ? app.videosMap.get(sourceVideo.id) || sourceVideo
      : sourceVideo;

  if (!targetVideo || typeof targetVideo !== "object" || !targetVideo.id) {
    return;
  }

  const button = channelModerationBadgeState.hideButton;
  if (button) {
    button.disabled = true;
    button.setAttribute("aria-busy", "true");
  }

  let handled = false;
  try {
    handled =
      typeof app?.handleModerationHide === "function"
        ? app.handleModerationHide({
            video: targetVideo,
          }) === true
        : false;
  } catch (error) {
    devLogger.warn(
      "[ChannelProfile] Failed to handle channel moderation hide",
      error,
    );
  }

  if (handled) {
    updateChannelModerationVisuals({
      app,
      pubkey: sourceVideo?.pubkey || currentChannelHex || "",
    });
  } else if (button) {
    button.disabled = false;
    button.removeAttribute("aria-busy");
  }
}

function handleChannelModerationBlock(event) {
  if (event) {
    if (typeof event.preventDefault === "function") {
      event.preventDefault();
    }
    if (typeof event.stopPropagation === "function") {
      event.stopPropagation();
    }
  }

  const sourceVideo = currentChannelModerationSourceVideo;
  const app = channelModerationBadgeState.app || getApp();
  const targetVideo =
    app?.videosMap instanceof Map && sourceVideo?.id
      ? app.videosMap.get(sourceVideo.id) || sourceVideo
      : sourceVideo;

  if (!targetVideo || typeof targetVideo !== "object" || !targetVideo.id) {
    return;
  }

  const button = channelModerationBadgeState.blockButton;
  if (button) {
    button.disabled = true;
    button.setAttribute("aria-busy", "true");
  }

  let handled = false;
  try {
    handled = app?.handleModerationBlock?.({ video: targetVideo }) === true;
  } catch (error) {
    devLogger.warn("[ChannelProfile] Failed to handle channel moderation block", error);
  }

  if (handled) {
    updateChannelModerationVisuals({ app, pubkey: sourceVideo?.pubkey || currentChannelHex || "" });
  } else if (button) {
    button.disabled = false;
    button.removeAttribute("aria-busy");
  }
}

function resolveChannelModeration(pubkey, app = getApp()) {
  const normalized = normalizeHex(pubkey);
  if (!normalized) {
    return null;
  }

  const matches = collectChannelVideos(normalized, app);
  let fallbackModeration = null;
  let fallbackVideo = null;

  for (const candidate of matches) {
    const decorated = decorateChannelVideo(candidate, app);
    if (!decorated || typeof decorated !== "object") {
      continue;
    }
    const moderation =
      decorated.moderation && typeof decorated.moderation === "object"
        ? decorated.moderation
        : null;
    if (!moderation) {
      continue;
    }

    if (moderation.viewerOverride?.showAnyway === true) {
      return { moderation, video: decorated };
    }

    if (moderation.hidden === true || moderation.blurThumbnail === true) {
      return { moderation, video: decorated };
    }

    if (!fallbackModeration) {
      fallbackModeration = moderation;
      fallbackVideo = decorated;
    }
  }

  if (fallbackModeration) {
    return { moderation: fallbackModeration, video: fallbackVideo };
  }

  const fallback = buildChannelModerationFallback(normalized);
  if (fallback) {
    return { moderation: fallback, video: null };
  }

  return null;
}

export function applyChannelVisualBlur({
  bannerEl = null,
  avatarEl = null,
  pubkey = "",
  app = null,
} = {}) {
  const resolvedApp = app || getApp();
  const resolution = resolveChannelModeration(pubkey, resolvedApp);
  const moderation = resolution?.moderation || {};
  const context = normalizeVideoModerationContext(moderation);

  const resolvedBanner = bannerEl ||
    (typeof document !== "undefined"
      ? document.getElementById("channelBanner")
      : null);
  const resolvedAvatar = avatarEl ||
    (typeof document !== "undefined"
      ? document.getElementById("channelAvatar")
      : null);
  const doc = resolvedBanner?.ownerDocument ||
    resolvedAvatar?.ownerDocument ||
    (typeof document !== "undefined" ? document : null);
  const badgeContainer = doc?.getElementById?.("channelModerationBadge") || null;

  const avatarElements = [resolvedAvatar, resolvedBanner].filter(Boolean);

  applyModerationContextDatasets(context, {
    root: resolvedBanner || null,
    roots: badgeContainer ? [badgeContainer] : undefined,
    avatar: resolvedAvatar || null,
    avatars: avatarElements.length > 1 ? avatarElements : undefined,
  });

  return { context, moderation, video: resolution?.video || null };
}

function updateChannelModerationVisuals({
  pubkey = "",
  app = null,
  bannerEl = null,
  avatarEl = null,
} = {}) {
  if (typeof document === "undefined") {
    return;
  }

  const resolvedApp = app || getApp();
  const targetPubkey = pubkey || currentChannelHex || "";
  if (!targetPubkey) {
    const result = applyChannelVisualBlur({
      bannerEl,
      avatarEl,
      pubkey: "",
      app: resolvedApp,
    });
    renderChannelModerationBadge({
      context: result?.context,
      video: null,
      app: resolvedApp,
      doc:
        bannerEl?.ownerDocument ||
        avatarEl?.ownerDocument ||
        (typeof document !== "undefined" ? document : null),
    });
    return;
  }

  const resolvedBanner =
    bannerEl || document.getElementById("channelBanner");
  const resolvedAvatar =
    avatarEl || document.getElementById("channelAvatar");

  const result = applyChannelVisualBlur({
    bannerEl: resolvedBanner,
    avatarEl: resolvedAvatar,
    pubkey: targetPubkey,
    app: resolvedApp,
  });

  renderChannelModerationBadge({
    context: result?.context,
    video: result?.video,
    app: resolvedApp,
    doc:
      resolvedBanner?.ownerDocument ||
      resolvedAvatar?.ownerDocument ||
      (typeof document !== "undefined" ? document : null),
  });
}

let channelModerationEventsBound = false;
const channelModerationUnsubscribes = [];

function handleTrustedMuteSignal() {
  if (!currentChannelHex) {
    return;
  }
  updateChannelModerationVisuals({ pubkey: currentChannelHex });
}

function refreshChannelVideoCardModeration(
  videoId,
  { app = getApp(), fallbackVideo = null, decoratedVideo = null } = {},
) {
  if (typeof videoId !== "string" || !videoId) {
    return false;
  }

  const resolvedApp = app || getApp();
  const sourceMap =
    resolvedApp?.videosMap instanceof Map ? resolvedApp.videosMap : null;
  const card = channelVideoCardsById.get(videoId) || null;

  let nextVideo =
    decoratedVideo && typeof decoratedVideo === "object"
      ? decoratedVideo
      : null;

  if (!nextVideo) {
    const baseVideo =
      (sourceMap && sourceMap.get(videoId)) ||
      (fallbackVideo && typeof fallbackVideo === "object"
        ? fallbackVideo
        : null) ||
      (card && typeof card.video === "object" ? card.video : null);

    if (!baseVideo) {
      return false;
    }

    nextVideo = decorateChannelVideo(baseVideo, resolvedApp) || baseVideo;
  }

  if (sourceMap && nextVideo) {
    sourceMap.set(videoId, nextVideo);
  }

  if (!card || !nextVideo) {
    return Boolean(nextVideo);
  }

  card.video = nextVideo;

  if (typeof card.refreshModerationUi === "function") {
    try {
      card.refreshModerationUi();
    } catch (error) {
      devLogger.warn(
        `[ChannelProfile] Failed to refresh moderation UI for video ${videoId}`,
        error,
      );
    }
  }

  channelVideoCardsById.set(videoId, card);
  return true;
}

function handleModerationSummarySignal(detail = {}) {
  if (!detail || typeof detail !== "object") {
    return;
  }

  const eventId = typeof detail.eventId === "string" ? detail.eventId : "";
  if (!eventId) {
    return;
  }

  const app = getApp();
  const video = app?.videosMap instanceof Map ? app.videosMap.get(eventId) : null;
  if (!video || typeof video !== "object") {
    return;
  }

  const videoPubkey = normalizeHex(video.pubkey);
  if (!videoPubkey) {
    return;
  }

  const channelPubkey = normalizeHex(currentChannelHex);
  if (!channelPubkey || videoPubkey !== channelPubkey) {
    return;
  }

  const decoratedVideo = decorateChannelVideo(video, app) || video;
  refreshChannelVideoCardModeration(eventId, {
    app,
    fallbackVideo: decoratedVideo,
    decoratedVideo,
  });
  updateChannelModerationVisuals({
    pubkey: channelPubkey,
    app,
  });
}

function handleVideoModerationEvent(event) {
  const detail = event?.detail;
  const video = detail && typeof detail === "object" ? detail.video : null;
  if (!video || typeof video !== "object") {
    return;
  }

  const videoPubkey = normalizeHex(video.pubkey);
  const channelPubkey = normalizeHex(currentChannelHex);
  if (!videoPubkey || !channelPubkey || videoPubkey !== channelPubkey) {
    return;
  }

  const videoId = typeof video.id === "string" ? video.id : "";
  if (!videoId) {
    return;
  }

  const app = getApp();
  const decoratedVideo = decorateChannelVideo(video, app) || video;
  if (app?.videosMap instanceof Map) {
    app.videosMap.set(videoId, decoratedVideo);
  }

  refreshChannelVideoCardModeration(videoId, {
    app,
    fallbackVideo: decoratedVideo,
    decoratedVideo,
  });
  updateChannelModerationVisuals({
    pubkey: channelPubkey,
    app,
  });
}

function ensureChannelModerationEvents() {
  if (channelModerationEventsBound) {
    return;
  }
  channelModerationEventsBound = true;

  if (typeof document !== "undefined") {
    document.addEventListener("video:moderation-override", handleVideoModerationEvent);
    document.addEventListener("video:moderation-block", handleVideoModerationEvent);
  }

  if (moderationService && typeof moderationService.on === "function") {
    const trustedUnsub = moderationService.on(
      "trusted-mutes",
      handleTrustedMuteSignal,
    );
    if (typeof trustedUnsub === "function") {
      channelModerationUnsubscribes.push(trustedUnsub);
    }

    const summaryUnsub = moderationService.on(
      "summary",
      handleModerationSummarySignal,
    );
    if (typeof summaryUnsub === "function") {
      channelModerationUnsubscribes.push(summaryUnsub);
    }
  }
}

const summarizeZapTracker = (tracker) =>
  Array.isArray(tracker)
    ? tracker.map((entry) => ({
        type: entry?.type || "unknown",
        status: entry?.status || "unknown",
        amount:
          Number.isFinite(entry?.amount) && entry.amount >= 0
            ? entry.amount
            : undefined,
        address: entry?.address || undefined,
        hasPayment: Boolean(entry?.payment),
        errorMessage:
          typeof entry?.error?.message === "string"
            ? entry.error.message
            : entry?.error
              ? String(entry.error)
              : undefined
      }))
    : undefined;

function logZapError(stage, details = {}, error) {
  const summary = {
    stage,
    shareType: details?.shareType,
    address: details?.address,
    amount:
      Number.isFinite(details?.amount) && details.amount >= 0
        ? details.amount
        : undefined,
    overrideFee:
      typeof details?.overrideFee === "number"
        ? details.overrideFee
        : undefined,
    commentLength:
      typeof details?.comment === "string" ? details.comment.length : undefined,
    wallet: details?.walletSettings
      ? {
          hasUri: Boolean(details.walletSettings.nwcUri),
          type:
            details.walletSettings.type ||
            details.walletSettings.name ||
            details.walletSettings.client ||
            undefined
        }
      : undefined,
    shares: details?.context?.shares
      ? {
          total: details.context.shares.total,
          creator: details.context.shares.creatorShare,
          platform: details.context.shares.platformShare
        }
      : undefined,
    tracker: summarizeZapTracker(details?.tracker),
    retryAttempt:
      Number.isInteger(details?.retryAttempt) && details.retryAttempt >= 0
        ? details.retryAttempt
        : undefined
  };
  userLogger.error("[zap] Channel zap failure", summary, error);
}
let currentChannelProfileEvent = null;
let currentChannelProfileSnapshot = null;
let currentChannelProfileHasExplicitPayload = false;

let cachedZapButton = null;
let cachedChannelShareButton = null;
let cachedChannelMenu = null;
let cachedZapControls = null;
let cachedZapForm = null;
let cachedZapAmountInput = null;
let cachedZapSplitSummary = null;
let cachedZapStatus = null;
let cachedZapReceipts = null;
let cachedZapWalletPrompt = null;
let cachedZapWalletLink = null;
let cachedZapCloseBtn = null;
let cachedZapSendBtn = null;

let pendingZapRetry = null;
let zapInFlight = false;
let zapControlsOpen = false;
let zapPopover = null;
let zapPopoverTrigger = null;
let zapShouldFocusOnOpen = false;
let zapPopoverOpenPromise = null;
let channelMenuPopover = null;
let channelMenuOpen = false;
let currentVideoLoadToken = 0;
let currentProfileLoadToken = 0;

const FALLBACK_CHANNEL_BANNER = "assets/jpg/bitvid.jpg";
const FALLBACK_CHANNEL_AVATAR = "assets/svg/default-profile.svg";
const PROFILE_EVENT_CACHE_TTL_MS = 5 * 60 * 1000;

const channelProfileMetadataCache = new Map();

function hasExplicitChannelProfilePayload(profile) {
  return (
    profile &&
    typeof profile === "object" &&
    Object.keys(profile).length > 0
  );
}

function touchChannelProfileCacheEntry(pubkey) {
  if (typeof pubkey !== "string" || !pubkey) {
    return false;
  }

  const existing = channelProfileMetadataCache.get(pubkey);
  if (!existing) {
    return false;
  }

  channelProfileMetadataCache.set(pubkey, {
    timestamp: Date.now(),
    profile: { ...existing.profile },
    event: existing.event ? { ...existing.event } : null
  });

  return true;
}

const SUPPORTED_BANNER_REFERRER_POLICIES = new Set([
  "no-referrer",
  "origin",
  "origin-when-cross-origin",
  "same-origin",
  "strict-origin",
  "strict-origin-when-cross-origin",
  "unsafe-url"
]);

const DEFAULT_BANNER_REFERRER_POLICY_SEQUENCE = [
  "no-referrer",
  "strict-origin-when-cross-origin",
  "origin-when-cross-origin",
  "unsafe-url"
];

const bannerLoadStates = new WeakMap();

function resolveToAbsoluteUrl(url) {
  if (typeof url !== "string") {
    return "";
  }

  const trimmed = url.trim();
  if (!trimmed) {
    return "";
  }

  try {
    if (typeof window !== "undefined" && window.location) {
      return new URL(trimmed, window.location.href).href;
    }
    return new URL(trimmed).href;
  } catch (error) {
    return trimmed;
  }
}

function normalizeReferrerPolicy(policy) {
  if (policy === null) {
    return null;
  }

  if (typeof policy !== "string") {
    return undefined;
  }

  const trimmed = policy.trim();
  if (!trimmed) {
    return null;
  }

  if (trimmed.toLowerCase() === "default") {
    return null;
  }

  if (!SUPPORTED_BANNER_REFERRER_POLICIES.has(trimmed)) {
    return undefined;
  }

  return trimmed;
}

function buildBannerPolicySequence(policies) {
  const normalized = [];
  const source = Array.isArray(policies) ? policies : [];
  const seen = new Set();

  for (const entry of source) {
    if (entry === null) {
      continue;
    }
    if (typeof entry !== "string") {
      continue;
    }
    const trimmed = entry.trim();
    if (!trimmed || trimmed.toLowerCase() === "default") {
      continue;
    }
    if (!SUPPORTED_BANNER_REFERRER_POLICIES.has(trimmed)) {
      continue;
    }
    if (seen.has(trimmed)) {
      continue;
    }
    normalized.push(trimmed);
    seen.add(trimmed);
  }

  normalized.push(null);
  return normalized;
}

function attemptBannerPolicy(bannerEl) {
  const state = bannerLoadStates.get(bannerEl);
  if (!state) {
    return false;
  }

  if (state.loadToken !== currentProfileLoadToken) {
    return false;
  }

  if (!state.url) {
    bannerLoadStates.delete(bannerEl);
    if (state.fallbackSrc) {
      setBannerVisual(bannerEl, state.fallbackSrc, { referrerPolicy: null });
    } else {
      setBannerVisual(bannerEl, "", { referrerPolicy: null });
    }
    return false;
  }

  while (state.attemptIndex < state.policies.length) {
    const candidate = state.policies[state.attemptIndex];
    state.attemptIndex += 1;

    const normalizedPolicy = normalizeReferrerPolicy(candidate);
    if (normalizedPolicy === undefined) {
      continue;
    }

    bannerLoadStates.set(bannerEl, state);
    setBannerVisual(bannerEl, state.url, { referrerPolicy: normalizedPolicy });
    return true;
  }

  bannerLoadStates.delete(bannerEl);
  if (state.url) {
    devLogger.warn(
      "[channelProfile.banner] Exhausted referrer policies for banner",
      { url: state.url }
    );
  }

  if (state.fallbackSrc) {
    setBannerVisual(bannerEl, state.fallbackSrc, { referrerPolicy: null });
  } else {
    setBannerVisual(bannerEl, "", { referrerPolicy: null });
  }

  return false;
}

function setBannerVisual(el, url, { referrerPolicy } = {}) {
  if (!el) {
    return;
  }

  const resolvedUrl = typeof url === "string" ? url : "";
  const tagName = el.tagName ? el.tagName.toLowerCase() : "";

  if (tagName === "img") {
    if (referrerPolicy !== undefined) {
      const normalizedPolicy =
        referrerPolicy === null
          ? ""
          : typeof referrerPolicy === "string"
            ? referrerPolicy
            : "";

      if ("referrerPolicy" in el) {
        try {
          el.referrerPolicy = normalizedPolicy;
        } catch (error) {
          devLogger.warn(
            "[channelProfile.banner] Failed to set banner referrer policy",
            error
          );
        }
      }

      if (normalizedPolicy) {
        el.setAttribute("referrerpolicy", normalizedPolicy);
      } else {
        el.removeAttribute("referrerpolicy");
      }

      el.dataset.bannerReferrerPolicy = normalizedPolicy;
    }

    if (el.src !== resolvedUrl) {
      el.src = resolvedUrl;
    }
  } else {
    updateChannelBannerBackground(el, resolvedUrl || "");
  }

  if (el.dataset.bannerSrc !== resolvedUrl) {
    el.dataset.bannerSrc = resolvedUrl;
  }
}

function ensureBannerFallbackHandler(bannerEl) {
  if (!bannerEl) {
    return;
  }

  const tagName = bannerEl.tagName ? bannerEl.tagName.toLowerCase() : "";
  if (tagName !== "img") {
    return;
  }

  if (!bannerEl.dataset.bannerReferrerPolicy) {
    const initialPolicy = bannerEl.getAttribute("referrerpolicy") || "";
    bannerEl.dataset.bannerReferrerPolicy = initialPolicy;
  }

  if (bannerEl.dataset.bannerFallbackAttached === "true") {
    return;
  }

  const handleError = () => {
    const state = bannerLoadStates.get(bannerEl);
    if (state && state.loadToken !== currentProfileLoadToken) {
      return;
    }

    const activeSrc = bannerEl.currentSrc || bannerEl.src || "";
    const normalizedActive = resolveToAbsoluteUrl(activeSrc);

    if (
      state &&
      state.resolvedUrl &&
      normalizedActive &&
      normalizedActive === state.resolvedUrl
    ) {
      const retried = attemptBannerPolicy(bannerEl);
      if (retried) {
        return;
      }
      return;
    }

    const fallbackAttr =
      (typeof bannerEl.dataset?.fallbackSrc === "string"
        ? bannerEl.dataset.fallbackSrc.trim()
        : "") ||
      bannerEl.getAttribute("data-fallback-src") ||
      "";
    const fallbackSrc =
      (state && state.fallbackSrc) || fallbackAttr || FALLBACK_CHANNEL_BANNER;
    const fallbackResolved =
      (state && state.resolvedFallback) || resolveToAbsoluteUrl(fallbackSrc);

    bannerLoadStates.delete(bannerEl);

    if (fallbackSrc && normalizedActive !== fallbackResolved) {
      setBannerVisual(bannerEl, fallbackSrc, { referrerPolicy: null });
    } else if (!fallbackSrc) {
      setBannerVisual(bannerEl, "", { referrerPolicy: null });
    }
  };

  bannerEl.addEventListener("error", handleError, { passive: true });
  bannerEl.dataset.bannerFallbackAttached = "true";
}

function applyBannerWithPolicies({
  bannerEl,
  url,
  fallbackSrc,
  policies = DEFAULT_BANNER_REFERRER_POLICY_SEQUENCE,
  loadToken
} = {}) {
  if (!bannerEl) {
    return;
  }

  const normalizedUrl =
    typeof url === "string" && url.trim() ? url.trim() : "";
  const fallbackCandidate =
    (typeof fallbackSrc === "string" && fallbackSrc.trim()) ||
    FALLBACK_CHANNEL_BANNER;
  const normalizedPolicies = buildBannerPolicySequence(policies);
  const expectedToken = Number.isInteger(loadToken)
    ? loadToken
    : currentProfileLoadToken;

  if (!normalizedUrl) {
    bannerLoadStates.delete(bannerEl);
    setBannerVisual(bannerEl, fallbackCandidate, { referrerPolicy: null });
    return;
  }

  bannerLoadStates.set(bannerEl, {
    url: normalizedUrl,
    resolvedUrl: resolveToAbsoluteUrl(normalizedUrl),
    fallbackSrc: fallbackCandidate,
    resolvedFallback: resolveToAbsoluteUrl(fallbackCandidate),
    policies: normalizedPolicies,
    attemptIndex: 0,
    loadToken: expectedToken
  });

  attemptBannerPolicy(bannerEl);
}

function getChannelZapButton() {
  if (cachedZapButton && !document.body.contains(cachedZapButton)) {
    cachedZapButton = null;
  }
  if (!cachedZapButton) {
    cachedZapButton = document.getElementById("zapButton");
  }
  return cachedZapButton;
}

function setChannelZapVisibility(visible) {
  const zapButton = getChannelZapButton();
  const controls = getZapControlsContainer();
  const amountInput = getZapAmountInput();
  const sendButton = getZapSendButton();
  if (!zapButton) {
    return;
  }
  const app = getApp();
  const isLoggedIn =
    typeof app?.isUserLoggedIn === "function"
      ? app.isUserLoggedIn()
      : Boolean(app?.normalizeHexPubkey?.(app?.pubkey));
  const shouldShow = !!visible;
  const requiresLogin = shouldShow && !isLoggedIn;

  if (
    shouldShow &&
    (!zapPopover || zapPopoverTrigger !== zapButton)
  ) {
    setupZapButton({ force: true });
  }

  zapButton.toggleAttribute("hidden", !shouldShow);
  zapButton.disabled = !shouldShow;
  zapButton.setAttribute(
    "aria-disabled",
    (requiresLogin || !shouldShow).toString()
  );
  zapButton.setAttribute("aria-hidden", (!shouldShow).toString());
  zapButton.setAttribute("aria-expanded", "false");
  if (shouldShow) {
    zapButton.removeAttribute("tabindex");
  } else {
    zapButton.setAttribute("tabindex", "-1");
    resetZapRetryState();
    zapInFlight = false;
    clearZapReceipts();
    setZapStatus("", "neutral");
  }
  if (requiresLogin) {
    zapButton.dataset.requiresLogin = "true";
  } else {
    delete zapButton.dataset.requiresLogin;
  }
  closeZapControls();
  if (controls) {
    controls.setAttribute("aria-hidden", "true");
    controls.hidden = true;
  }
  const shouldEnableInputs = shouldShow && !requiresLogin;
  if (amountInput) {
    amountInput.disabled = !shouldEnableInputs;
  }
  if (sendButton) {
    sendButton.disabled = !shouldEnableInputs;
    sendButton.setAttribute("aria-hidden", (!shouldEnableInputs).toString());
    if (shouldEnableInputs) {
      sendButton.removeAttribute("tabindex");
      sendButton.removeAttribute("aria-busy");
      delete sendButton.dataset.state;
    } else {
      sendButton.setAttribute("tabindex", "-1");
      delete sendButton.dataset.state;
    }
  }

  const hasWallet =
    typeof app?.hasActiveWalletConnection === "function"
      ? app.hasActiveWalletConnection()
      : (() => {
          const settings =
            typeof app?.getActiveNwcSettings === "function"
              ? app.getActiveNwcSettings()
              : {};
          const uri =
            typeof settings?.nwcUri === "string" ? settings.nwcUri.trim() : "";
          return uri.length > 0;
        })();
  setZapWalletPromptVisible(shouldEnableInputs && !hasWallet);
  if (shouldEnableInputs) {
    setupZapWalletLink();
  }
}

function isSessionActorWithoutLogin() {
  const app = getApp();
  const isLoggedIn =
    typeof app?.isUserLoggedIn === "function"
      ? app.isUserLoggedIn()
      : Boolean(app?.normalizeHexPubkey?.(app?.pubkey) || app?.pubkey);
  if (isLoggedIn) {
    return false;
  }

  return getSessionActorPubkey().length > 0;
}

function getSessionActorPubkey() {
  return typeof nostrClient?.sessionActor?.pubkey === "string"
    ? nostrClient.sessionActor.pubkey.trim()
    : "";
}

function getChannelShareButton() {
  if (
    cachedChannelShareButton &&
    !document.body.contains(cachedChannelShareButton)
  ) {
    cachedChannelShareButton = null;
  }
  if (!cachedChannelShareButton) {
    cachedChannelShareButton = document.getElementById("channelShareBtn");
  }
  return cachedChannelShareButton;
}

function getChannelMenuElement() {
  if (cachedChannelMenu && cachedChannelMenu.isConnected) {
    return cachedChannelMenu;
  }

  const doc = typeof document !== "undefined" ? document : null;
  const existing = doc?.getElementById("channelProfileMoreMenu") || null;
  const HTMLElementCtor =
    doc?.defaultView?.HTMLElement ||
    (typeof HTMLElement !== "undefined" ? HTMLElement : null);
  if (HTMLElementCtor && existing instanceof HTMLElementCtor) {
    cachedChannelMenu = existing;
  } else {
    cachedChannelMenu = null;
  }
  return cachedChannelMenu;
}

function getZapControlsContainer() {
  if (cachedZapControls) {
    if (cachedZapControls.isConnected) {
      return cachedZapControls;
    }

    const doc = typeof document !== "undefined" ? document : null;
    const HTMLElementCtor =
      doc?.defaultView?.HTMLElement ||
      (typeof HTMLElement !== "undefined" ? HTMLElement : null);
    const existing = doc?.getElementById("zapControls") || null;
    if (existing && (!HTMLElementCtor || existing instanceof HTMLElementCtor)) {
      cachedZapControls = existing;
      return cachedZapControls;
    }

    return cachedZapControls;
  }

  const doc = typeof document !== "undefined" ? document : null;
  const existing = doc?.getElementById("zapControls") || null;
  const HTMLElementCtor =
    doc?.defaultView?.HTMLElement ||
    (typeof HTMLElement !== "undefined" ? HTMLElement : null);
  if (existing && (!HTMLElementCtor || existing instanceof HTMLElementCtor)) {
    cachedZapControls = existing;
  } else {
    cachedZapControls = null;
  }
  return cachedZapControls;
}

function getZapFormElement() {
  if (cachedZapForm) {
    if (cachedZapForm.isConnected) {
      return cachedZapForm;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapForm");
      if (existing) {
        cachedZapForm = existing;
      }
    }

    return cachedZapForm;
  }

  const container = getZapControlsContainer();
  cachedZapForm = container?.querySelector("#zapForm") || null;
  return cachedZapForm;
}

function getZapAmountInput() {
  if (cachedZapAmountInput) {
    if (cachedZapAmountInput.isConnected) {
      return cachedZapAmountInput;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapAmountInput");
      if (existing) {
        cachedZapAmountInput = existing;
      }
    }

    return cachedZapAmountInput;
  }

  const container = getZapControlsContainer();
  cachedZapAmountInput = container?.querySelector("#zapAmountInput") || null;
  return cachedZapAmountInput;
}

function getZapSplitSummaryElement() {
  if (cachedZapSplitSummary) {
    if (cachedZapSplitSummary.isConnected) {
      return cachedZapSplitSummary;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapSplitSummary");
      if (existing) {
        cachedZapSplitSummary = existing;
      }
    }

    return cachedZapSplitSummary;
  }

  const container = getZapControlsContainer();
  cachedZapSplitSummary = container?.querySelector("#zapSplitSummary") || null;
  return cachedZapSplitSummary;
}

function getZapStatusElement() {
  if (cachedZapStatus) {
    if (cachedZapStatus.isConnected) {
      return cachedZapStatus;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapStatus");
      if (existing) {
        cachedZapStatus = existing;
      }
    }

    return cachedZapStatus;
  }

  const container = getZapControlsContainer();
  cachedZapStatus = container?.querySelector("#zapStatus") || null;
  return cachedZapStatus;
}

function getZapReceiptsList() {
  if (cachedZapReceipts) {
    if (cachedZapReceipts.isConnected) {
      return cachedZapReceipts;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapReceipts");
      if (existing) {
        cachedZapReceipts = existing;
      }
    }

    return cachedZapReceipts;
  }

  const container = getZapControlsContainer();
  cachedZapReceipts = container?.querySelector("#zapReceipts") || null;
  return cachedZapReceipts;
}

function getZapSendButton() {
  if (cachedZapSendBtn) {
    if (cachedZapSendBtn.isConnected) {
      return cachedZapSendBtn;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapSendBtn");
      if (existing) {
        cachedZapSendBtn = existing;
      }
    }

    return cachedZapSendBtn;
  }

  const container = getZapControlsContainer();
  cachedZapSendBtn = container?.querySelector("#zapSendBtn") || null;
  return cachedZapSendBtn;
}

function getZapWalletPrompt() {
  if (cachedZapWalletPrompt) {
    if (cachedZapWalletPrompt.isConnected) {
      return cachedZapWalletPrompt;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapWalletPrompt");
      if (existing) {
        cachedZapWalletPrompt = existing;
      }
    }

    return cachedZapWalletPrompt;
  }

  const container = getZapControlsContainer();
  cachedZapWalletPrompt = container?.querySelector("#zapWalletPrompt") || null;
  return cachedZapWalletPrompt;
}

function getZapWalletLink() {
  if (cachedZapWalletLink) {
    if (cachedZapWalletLink.isConnected) {
      return cachedZapWalletLink;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapWalletLink");
      if (existing) {
        cachedZapWalletLink = existing;
      }
    }

    return cachedZapWalletLink;
  }

  const container = getZapControlsContainer();
  cachedZapWalletLink = container?.querySelector("#zapWalletLink") || null;
  return cachedZapWalletLink;
}

function getZapCloseButton() {
  if (cachedZapCloseBtn) {
    if (cachedZapCloseBtn.isConnected) {
      return cachedZapCloseBtn;
    }

    const container = getZapControlsContainer();
    if (container) {
      const existing = container.querySelector("#zapCloseBtn");
      if (existing) {
        cachedZapCloseBtn = existing;
      }
    }

    return cachedZapCloseBtn;
  }

  const container = getZapControlsContainer();
  cachedZapCloseBtn = container?.querySelector("#zapCloseBtn") || null;
  return cachedZapCloseBtn;
}

function cacheZapPanelElements(panel) {
  if (!panel || panel.nodeType !== 1) {
    cachedZapControls = null;
    cachedZapForm = null;
    cachedZapAmountInput = null;
    cachedZapSplitSummary = null;
    cachedZapStatus = null;
    cachedZapReceipts = null;
    cachedZapWalletPrompt = null;
    cachedZapWalletLink = null;
    cachedZapCloseBtn = null;
    cachedZapSendBtn = null;
    zapPopoverOpenPromise = null;
    zapShouldFocusOnOpen = false;
    return;
  }

  cachedZapControls = panel;
  cachedZapForm = panel.querySelector("#zapForm");
  cachedZapAmountInput = panel.querySelector("#zapAmountInput");
  cachedZapSplitSummary = panel.querySelector("#zapSplitSummary");
  cachedZapStatus = panel.querySelector("#zapStatus");
  cachedZapReceipts = panel.querySelector("#zapReceipts");
  cachedZapWalletPrompt = panel.querySelector("#zapWalletPrompt");
  cachedZapWalletLink = panel.querySelector("#zapWalletLink");
  cachedZapCloseBtn = panel.querySelector("#zapCloseBtn");
  cachedZapSendBtn = panel.querySelector("#zapSendBtn");
}

function initializeZapPanel() {
  const zapButton = getChannelZapButton();
  const amountInput = getZapAmountInput();
  const zapForm = getZapFormElement();
  const sendButton = getZapSendButton();
  if (!zapButton || !amountInput || !zapForm || !sendButton) {
    return;
  }

  zapButton.setAttribute("aria-expanded", "false");

  if (zapForm.dataset.initialized !== "true") {
    zapForm.addEventListener("submit", handleZapSend);
    zapForm.dataset.initialized = "true";
  }

  if (amountInput.dataset.initialized !== "true") {
    amountInput.addEventListener("input", handleZapAmountChange);
    amountInput.addEventListener("change", handleZapAmountChange);
    amountInput.dataset.initialized = "true";
  }

  const closeBtn = getZapCloseButton();
  if (closeBtn && closeBtn.dataset.initialized !== "true") {
    closeBtn.addEventListener("click", (event) => {
      event?.preventDefault?.();
      closeZapControls({ focusButton: true });
    });
    closeBtn.dataset.initialized = "true";
  }

  setupZapWalletLink();

  const app = getApp();
  const activeSettings =
    typeof app?.getActiveNwcSettings === "function"
      ? app.getActiveNwcSettings()
      : {};

  const hasWallet =
    typeof app?.hasActiveWalletConnection === "function"
      ? app.hasActiveWalletConnection()
      : (() => {
          const settings =
            typeof app?.getActiveNwcSettings === "function"
              ? app.getActiveNwcSettings()
              : {};
          const uri =
            typeof settings?.nwcUri === "string" ? settings.nwcUri.trim() : "";
          return uri.length > 0;
        })();

  const shouldShowPrompt = !zapButton.hasAttribute("hidden") && !hasWallet;
  setZapWalletPromptVisible(shouldShowPrompt);

  if (
    Number.isFinite(activeSettings?.defaultZap) &&
    activeSettings.defaultZap > 0
  ) {
    amountInput.value = Math.max(0, Math.round(activeSettings.defaultZap));
  } else if (!amountInput.value) {
    amountInput.value = "";
  }

  updateZapSplitSummary();
  setZapStatus("", "neutral");
  clearZapReceipts();
}

function setZapWalletPromptVisible(visible) {
  const prompt = getZapWalletPrompt();
  if (!prompt) {
    return;
  }
  const shouldShow = !!visible;
  prompt.toggleAttribute("hidden", !shouldShow);
  prompt.setAttribute("aria-hidden", (!shouldShow).toString());
}

function setupZapWalletLink() {
  const link = getZapWalletLink();
  if (!link) {
    return;
  }
  if (link.dataset.initialized === "true") {
    return;
  }
  link.addEventListener("click", (event) => {
    event?.preventDefault?.();
    const app = getApp();
    if (typeof app?.openWalletPane === "function") {
      Promise.resolve()
        .then(() => app.openWalletPane())
        .catch((error) => {
          devLogger.warn(
            "[zap] Failed to open wallet pane from channel view:",
            error
          );
          app?.showError?.("Wallet settings are not available right now.");
        });
    } else {
      devLogger.warn(
        "[zap] Wallet pane requested but application did not expose openWalletPane()."
      );
      app?.showError?.("Wallet settings are not available right now.");
    }
  });
  link.dataset.initialized = "true";
}

function focusZapAmountField() {
  const amountInput = getZapAmountInput();
  if (amountInput && typeof amountInput.focus === "function") {
    try {
      amountInput.focus({ preventScroll: true });
    } catch (error) {
      amountInput.focus();
    }
  }
}

function isZapControlsOpen() {
  if (typeof zapPopover?.isOpen === "function") {
    return zapPopover.isOpen();
  }
  return zapControlsOpen;
}

function openZapControls({ focus = false } = {}) {
  const zapButton = getChannelZapButton();
  if (!zapButton) {
    zapShouldFocusOnOpen = false;
    return false;
  }

  if (!zapPopover || zapPopoverTrigger !== zapButton) {
    const initialized = setupZapButton({ force: true });
    if (!initialized || !zapPopover || zapPopoverTrigger !== zapButton) {
      zapShouldFocusOnOpen = false;
      return false;
    }
  }

  if (zapPopoverOpenPromise) {
    if (focus) {
      zapShouldFocusOnOpen = true;
    }
    return true;
  }

  zapShouldFocusOnOpen = focus;

  let result;
  try {
    result = zapPopover.open();
  } catch (error) {
    zapShouldFocusOnOpen = false;
    zapPopoverOpenPromise = null;
    devLogger.warn("[zap] Failed to open zap popover", error);
    return false;
  }

  if (result && typeof result.then === "function") {
    const pending = result
      .catch((error) => {
        devLogger.warn("[zap] Zap popover open rejected", error);
        return false;
      })
      .finally(() => {
        zapPopoverOpenPromise = null;
        zapShouldFocusOnOpen = false;
      });
    zapPopoverOpenPromise = pending;
    return true;
  }

  zapShouldFocusOnOpen = false;
  zapPopoverOpenPromise = null;
  return Boolean(result);
}

function closeZapControls({ focusButton = false } = {}) {
  const zapButton = getChannelZapButton();
  zapShouldFocusOnOpen = false;
  zapPopoverOpenPromise = null;

  if (zapPopover) {
    const result = zapPopover.close({ restoreFocus: focusButton });
    if (!result && focusButton && zapButton && typeof zapButton.focus === "function") {
      try {
        zapButton.focus({ preventScroll: true });
      } catch (error) {
        zapButton.focus();
      }
    }
    return Boolean(result);
  }

  zapControlsOpen = false;
  if (zapButton) {
    zapButton.setAttribute("aria-expanded", "false");
    if (focusButton && typeof zapButton.focus === "function") {
      try {
        zapButton.focus({ preventScroll: true });
      } catch (error) {
        zapButton.focus();
      }
    }
  }
  return false;
}

function updateZapSplitSummary({ overrideFee = null } = {}) {
  const summaryEl = getZapSplitSummaryElement();
  if (!summaryEl) {
    return;
  }

  const amountInput = getZapAmountInput();
  const numeric = Math.max(0, Math.round(Number(amountInput?.value || 0)));
  if (!numeric) {
    summaryEl.textContent = "Enter an amount to view the split.";
    return;
  }

  const shares = calculateZapShares(numeric, overrideFee);

  const parts = [];
  const creatorEntry = getCachedLightningEntry(currentChannelLightningAddress);
  const creatorMin = formatMinRequirement(creatorEntry?.metadata);
  let creatorText = `Creator: ${shares.creatorShare} sats`;
  if (Number.isFinite(creatorMin) && creatorMin > 0) {
    creatorText += ` (min ${creatorMin})`;
  }
  parts.push(creatorText);

  if (shares.platformShare > 0) {
    const platformEntry = getCachedLightningEntry(
      getCachedPlatformLightningAddress()
    );
    const platformMin = formatMinRequirement(platformEntry?.metadata);
    let platformText = `Platform: ${shares.platformShare} sats`;
    if (Number.isFinite(platformMin) && platformMin > 0) {
      platformText += ` (min ${platformMin})`;
    }
    parts.push(platformText);
  }

  summaryEl.textContent = parts.join(" • ");
}

function setZapStatus(message, tone = "neutral") {
  const statusEl = getZapStatusElement();
  if (!statusEl) {
    return;
  }

  const normalizedTone = typeof tone === "string" ? tone : "neutral";
  statusEl.textContent = message || "";
  statusEl.classList.remove(
    "text-text",
    "text-muted",
    "text-info",
    "text-critical",
    "text-warning-strong"
  );

  if (!message) {
    statusEl.classList.add("text-muted");
    return;
  }

  switch (normalizedTone) {
    case "success":
      statusEl.classList.add("text-info");
      break;
    case "error":
      statusEl.classList.add("text-critical");
      break;
    case "warning":
      statusEl.classList.add("text-warning-strong");
      break;
    default:
      statusEl.classList.add("text-text");
      break;
  }
}

function clearZapReceipts() {
  const list = getZapReceiptsList();
  if (!list) {
    return;
  }
  list.innerHTML = "";
}

function renderZapReceipts(receipts, { partial = false } = {}) {
  const list = getZapReceiptsList();
  if (!list) {
    return;
  }

  list.innerHTML = "";

  const doc = list.ownerDocument || (typeof document !== "undefined" ? document : null);

  if (!Array.isArray(receipts) || receipts.length === 0) {
    if (partial) {
      const emptyItem = doc?.createElement?.("li");
      emptyItem.className =
        "rounded border border-border bg-overlay-panel-soft p-3 text-text";
      emptyItem.textContent = "No receipts were returned for this attempt.";
      list.appendChild(emptyItem);
    }
    return;
  }

  receipts.forEach((receipt) => {
    if (!receipt) {
      return;
    }

    const li = doc?.createElement?.("li");
    if (!li) {
      return;
    }
    li.className = "rounded border border-border bg-overlay-panel-soft p-3";

    const header = doc?.createElement?.("div");
    if (!header) {
      return;
    }
    header.className =
      "flex items-center justify-between text-xs font-semibold uppercase tracking-wide text-text";

    const shareType = receipt.recipientType || receipt.type || "creator";
    const shareLabel = doc?.createElement?.("span");
    shareLabel.textContent = `${describeShareType(shareType)} • ${Math.max(
      0,
      Math.round(Number(receipt.amount || 0))
    )} sats`;

    const status = doc?.createElement?.("span");
    if (!shareLabel || !status) {
      return;
    }
    const isSuccess = receipt.status
      ? receipt.status === "success"
      : !receipt.error;
    status.textContent = isSuccess ? "Success" : "Failed";
    status.className = isSuccess ? "text-info" : "text-critical";

    header.appendChild(shareLabel);
    header.appendChild(status);
    li.appendChild(header);

    const address = doc?.createElement?.("p");
    if (address) {
      address.className = "mt-1 text-xs text-text break-all";
    }
    const addressValue = receipt.address || "";
    if (address && addressValue) {
      address.textContent = addressValue;
      li.appendChild(address);
    }

    const detail = doc?.createElement?.("p");
    if (!detail) {
      return;
    }
    detail.className = "mt-2 text-xs text-muted";
    if (isSuccess) {
      let detailMessage = "Invoice settled.";
      const preimage = receipt.payment?.result?.preimage;
      if (typeof preimage === "string" && preimage) {
        detailMessage = `Preimage: ${preimage.slice(0, 18)}${
          preimage.length > 18 ? "…" : ""
        }`;
      }
      detail.textContent = detailMessage;
    } else {
      const errorMessage =
        (receipt.error && receipt.error.message) ||
        (typeof receipt.error === "string" ? receipt.error : "Payment failed.");
      detail.textContent = errorMessage;
    }
    li.appendChild(detail);

    list.appendChild(li);
  });
}

function resetZapRetryState() {
  pendingZapRetry = null;
  const zapButton = getChannelZapButton();
  if (zapButton) {
    delete zapButton.dataset.retryPending;
    zapButton.setAttribute("aria-label", "Open zap dialog");
    zapButton.title = "Open zap dialog";
  }
  const sendButton = getZapSendButton();
  if (sendButton) {
    delete sendButton.dataset.retryPending;
    sendButton.textContent = "Send";
    sendButton.setAttribute("aria-label", "Send a zap");
    sendButton.removeAttribute("title");
  }
}

function setZapCompleted(completed) {
  const sendButton = getZapSendButton();
  if (!sendButton) {
    return;
  }

  if (completed) {
    delete sendButton.dataset.retryPending;
    sendButton.dataset.completed = "true";
    sendButton.textContent = "Done";
    sendButton.setAttribute("aria-label", "Close zap dialog");
    sendButton.title = "Close zap dialog";
  } else {
    delete sendButton.dataset.completed;
    if (!sendButton.dataset.retryPending) {
      sendButton.textContent = "Send";
      sendButton.setAttribute("aria-label", "Send a zap");
      sendButton.removeAttribute("title");
    }
  }
}

function markZapRetryPending(shares) {
  const validShares = Array.isArray(shares)
    ? shares.filter((share) => share && share.amount > 0)
    : [];
  if (!validShares.length) {
    resetZapRetryState();
    return;
  }

  pendingZapRetry = { shares: validShares, createdAt: Date.now() };
  const zapButton = getChannelZapButton();
  if (zapButton) {
    zapButton.dataset.retryPending = "true";
    zapButton.setAttribute("aria-label", "Retry failed zap shares");
    zapButton.title = "Retry failed zap shares";
  }
  const sendButton = getZapSendButton();
  if (sendButton) {
    sendButton.dataset.retryPending = "true";
    sendButton.textContent = "Retry";
    sendButton.setAttribute("aria-label", "Retry failed zap shares");
    sendButton.title = "Retry failed zap shares";
  }
}

function getZapVideoEvent() {
  const lightningAddress = currentChannelLightningAddress || "";
  const baseEvent =
    currentChannelProfileEvent && typeof currentChannelProfileEvent === "object"
      ? { ...currentChannelProfileEvent }
      : {};
  return {
    kind: typeof baseEvent.kind === "number" ? baseEvent.kind : 0,
    id: baseEvent.id || currentChannelHex || "",
    pubkey: baseEvent.pubkey || currentChannelHex || "",
    tags: Array.isArray(baseEvent.tags) ? [...baseEvent.tags] : [],
    content: typeof baseEvent.content === "string" ? baseEvent.content : "",
    created_at: baseEvent.created_at || Math.floor(Date.now() / 1000),
    lightningAddress
  };
}

async function prepareLightningContext({ amount, overrideFee = null }) {
  if (!currentChannelLightningAddress) {
    throw new Error("This creator has not configured a Lightning address yet.");
  }

  const shares = calculateZapShares(amount, overrideFee);
  if (!shares.total) {
    throw new Error("Enter a zap amount greater than zero.");
  }

  const creatorEntry = await fetchLightningMetadata(
    currentChannelLightningAddress
  );
  if (shares.creatorShare > 0) {
    try {
      validateInvoiceAmount(creatorEntry.metadata, shares.creatorShare);
    } catch (error) {
      const detail = error?.message || "Unable to validate creator share.";
      throw new Error(`Creator share error: ${detail}`);
    }
  }

  let platformEntry = null;
  let platformAddress = "";
  if (shares.platformShare > 0) {
    platformAddress = getCachedPlatformLightningAddress();
    if (!platformAddress) {
      platformAddress = await getPlatformLightningAddress({
        forceRefresh: false
      });
      setCachedPlatformLightningAddress(platformAddress || "");
    }
    if (!platformAddress) {
      throw new Error("Platform Lightning address is unavailable.");
    }

    platformEntry = await fetchLightningMetadata(platformAddress);
    try {
      validateInvoiceAmount(platformEntry.metadata, shares.platformShare);
    } catch (error) {
      const detail = error?.message || "Unable to validate platform share.";
      throw new Error(`Platform share error: ${detail}`);
    }
  }

  updateZapSplitSummary();

  return {
    shares,
    creatorEntry,
    platformEntry,
    platformAddress
  };
}

function createZapDependencies({
  creatorEntry,
  platformEntry,
  shares,
  shareTracker,
  walletSettings
}) {
  const creatorKey = normalizeLightningAddressKey(
    creatorEntry?.address || currentChannelLightningAddress
  );
  const platformKey = normalizeLightningAddressKey(
    platformEntry?.address || getCachedPlatformLightningAddress()
  );

  let activeShare = null;

  return {
    lnurl: {
      resolveLightningAddress: (value) => {
        const normalized = normalizeLightningAddressKey(value);
        if (normalized && normalized === creatorKey) {
          activeShare = "creator";
          if (creatorEntry?.resolved) {
            return { ...creatorEntry.resolved };
          }
        } else if (normalized && normalized === platformKey) {
          activeShare = "platform";
          if (platformEntry?.resolved) {
            return { ...platformEntry.resolved };
          }
        } else {
          activeShare = null;
        }

        const resolved = resolveLightningAddress(value);
        if (normalized) {
          rememberLightningMetadata({
            key: normalized,
            address: resolved.address || value,
            resolved,
            fetchedAt: Date.now()
          });
        }
        return resolved;
      },
      fetchPayServiceData: async (url) => {
        const cached = getCachedMetadataByUrl(url);
        if (cached?.metadata && isMetadataEntryFresh(cached)) {
          return cached.metadata;
        }

        const metadata = await fetchPayServiceData(url);
        if (cached) {
          rememberLightningMetadata({
            ...cached,
            metadata,
            fetchedAt: Date.now()
          });
        }
        return metadata;
      },
      validateInvoiceAmount,
      requestInvoice
    },
    wallet: {
      ensureWallet: async (options) => {
        try {
          return await ensureWallet(options);
        } catch (error) {
          logZapError(
            "wallet.ensureWallet",
            {
              tracker: shareTracker,
              context: { shares },
              walletSettings: options?.settings
            },
            error
          );
          throw error;
        }
      },
      sendPayment: async (bolt11, params) => {
        const shareType = activeShare || "unknown";
        const shareAmount =
          shareType === "platform" ? shares.platformShare : shares.creatorShare;
        const address =
          shareType === "platform"
            ? platformEntry?.address || getCachedPlatformLightningAddress()
            : creatorEntry?.address || currentChannelLightningAddress;
        const normalizedParams = {
          ...(params || {})
        };
        if (
          !Number.isFinite(normalizedParams.amountSats) &&
          Number.isFinite(shareAmount)
        ) {
          normalizedParams.amountSats = shareAmount;
        }
        if (!normalizedParams.settings && walletSettings) {
          normalizedParams.settings = walletSettings;
        }
        try {
          const payment = await sendWalletPayment(bolt11, normalizedParams);
          if (Array.isArray(shareTracker)) {
            shareTracker.push({
              type: shareType,
              status: "success",
              amount: shareAmount,
              address,
              payment
            });
          }
          return payment;
        } catch (error) {
          const allowanceExhausted = isZapAllowanceExhaustedError(error);
          if (allowanceExhausted) {
            error.__zapAllowanceExhausted = true;
          }
          if (Array.isArray(shareTracker)) {
            shareTracker.push({
              type: shareType,
              status: "error",
              amount: shareAmount,
              address,
              error,
              allowanceExhausted
            });
          }
          if (
            typeof error?.message === "string" &&
            error.message.toLowerCase().includes("timed out")
          ) {
            try {
              resetWalletClient();
            } catch (resetError) {
              devLogger?.warn?.(
                "[zap] Failed to reset wallet client after timeout",
                resetError
              );
            }
          }
          logZapError(
            "wallet.sendPayment",
            {
              shareType,
              amount: shareAmount,
              address,
              tracker: shareTracker,
              context: { shares }
            },
            error
          );
          throw error;
        } finally {
          activeShare = null;
        }
      }
    },
    platformAddress: {
      getPlatformLightningAddress: async () => {
        if (platformEntry?.address) {
          return platformEntry.address;
        }
        const cachedAddress = getCachedPlatformLightningAddress();
        if (cachedAddress) {
          return cachedAddress;
        }
        const fallback = await getPlatformLightningAddress({
          forceRefresh: false
        });
        setCachedPlatformLightningAddress(fallback || "");
        return fallback;
      }
    }
  };
}

function getWalletSettingsOrPrompt() {
  const app = getApp();
  const settings =
    typeof app?.getActiveNwcSettings === "function"
      ? app.getActiveNwcSettings()
      : {};
  const normalizedUri =
    typeof settings?.nwcUri === "string" ? settings.nwcUri.trim() : "";
  if (!normalizedUri) {
    app?.showError?.("Connect a Lightning wallet to send zaps.");
    if (typeof app?.openWalletPane === "function") {
      app.openWalletPane();
    }
    return null;
  }
  return {
    ...settings,
    nwcUri: normalizedUri
  };
}

async function runZapAttempt({ amount, overrideFee = null, walletSettings }) {
  const settings = walletSettings || getWalletSettingsOrPrompt();
  if (!settings) {
    return null;
  }

  let context;
  try {
    context = await prepareLightningContext({ amount, overrideFee });
  } catch (error) {
    logZapError(
      "prepareLightningContext",
      {
        amount,
        overrideFee,
        walletSettings: settings
      },
      error
    );
    throw error;
  }
  const shareTracker = [];
  const dependencies = createZapDependencies({
    ...context,
    shareTracker,
    walletSettings: settings
  });
  const videoEvent = getZapVideoEvent();

  let previousOverride;
  const hasGlobal = typeof globalThis !== "undefined";
  if (
    hasGlobal &&
    typeof overrideFee === "number" &&
    Number.isFinite(overrideFee)
  ) {
    previousOverride = globalThis.__BITVID_PLATFORM_FEE_OVERRIDE__;
    globalThis.__BITVID_PLATFORM_FEE_OVERRIDE__ = overrideFee;
  }

  try {
    const result = await splitAndZap(
      {
        videoEvent,
        amountSats: context.shares.total,
        walletSettings: settings
      },
      dependencies
    );
    return { context, result, shareTracker };
  } catch (error) {
    if (Array.isArray(shareTracker) && shareTracker.length) {
      error.__zapShareTracker = shareTracker;
    }
    logZapError(
      "splitAndZap",
      {
        amount,
        overrideFee,
        walletSettings: settings,
        context,
        tracker: shareTracker
      },
      error
    );
    throw error;
  } finally {
    if (
      hasGlobal &&
      typeof overrideFee === "number" &&
      Number.isFinite(overrideFee)
    ) {
      if (typeof previousOverride === "number") {
        globalThis.__BITVID_PLATFORM_FEE_OVERRIDE__ = previousOverride;
      } else if (
        globalThis &&
        "__BITVID_PLATFORM_FEE_OVERRIDE__" in globalThis
      ) {
        delete globalThis.__BITVID_PLATFORM_FEE_OVERRIDE__;
      }
    }
  }
}

function handleZapAmountChange() {
  resetZapRetryState();
  setZapCompleted(false);
  updateZapSplitSummary();
}

async function executePendingRetry({ walletSettings }) {
  const retryState = pendingZapRetry;
  const shares = Array.isArray(retryState?.shares) ? retryState.shares : [];
  if (!shares.length) {
    resetZapRetryState();
    return;
  }

  const app = getApp();
  const summary = shares
    .map((share) => `${describeShareType(share.type)} ${share.amount} sats`)
    .join(", ");
  setZapStatus(`Retrying failed share(s): ${summary}`, "warning");
  clearZapReceipts();

  const aggregatedReceipts = [];
  const aggregatedTracker = [];

  for (const share of shares) {
    const overrideFee = share.type === "platform" ? 100 : 0;
    try {
      const attempt = await runZapAttempt({
        amount: share.amount,
        overrideFee,
        walletSettings
      });
      if (!attempt) {
        setZapStatus("", "neutral");
        return;
      }
      if (attempt?.result?.receipts) {
        aggregatedReceipts.push(...attempt.result.receipts);
      } else if (Array.isArray(attempt?.shareTracker)) {
        aggregatedTracker.push(...attempt.shareTracker);
      }
    } catch (error) {
      const tracker = Array.isArray(error?.__zapShareTracker)
        ? error.__zapShareTracker
        : [];
      logZapError(
        "retry.share",
        {
          shareType: share?.type || "unknown",
          amount: share?.amount,
          address: share?.address,
          walletSettings,
          tracker
        },
        error
      );
      if (tracker.length) {
        aggregatedTracker.push(...tracker);
      }
      const failureShares = tracker.filter(
        (entry) => entry && entry.status !== "success" && entry.amount > 0
      );
      markZapRetryPending(failureShares.length ? failureShares : [share]);
      const message = error?.message || "Retry failed.";
      setZapStatus(message, "error");
      app?.showError?.(message);
      renderZapReceipts(
        aggregatedTracker.length ? aggregatedTracker : tracker,
        {
          partial: true
        }
      );
      return;
    }
  }

  renderZapReceipts(
    aggregatedReceipts.length ? aggregatedReceipts : aggregatedTracker,
    { partial: false }
  );
  setZapStatus("Retry completed successfully.", "success");
  app?.showSuccess?.("Failed shares retried successfully.");
  resetZapRetryState();
}

function handleZapButtonClick(event) {
  if (event) {
    event.preventDefault();
    if (typeof event.stopPropagation === "function") {
      event.stopPropagation();
    }
  }

  const zapButton = getChannelZapButton();
  if (!zapButton) {
    return;
  }

  const requiresLogin = zapButton.dataset?.requiresLogin === "true";

  if (requiresLogin || isSessionActorWithoutLogin()) {
    channelZapPendingOpen = true;
    const doc =
      zapButton?.ownerDocument ||
      (typeof document !== "undefined" ? document : null);
    showLoginRequiredToZapNotification({ document: doc });
    return;
  }

  channelZapPendingOpen = false;

  if (!zapPopover || zapPopoverTrigger !== zapButton) {
    setupZapButton({ force: true });
  }

  if (!zapPopover) {
    return;
  }

  if (zapPopoverOpenPromise) {
    zapShouldFocusOnOpen = true;
    return;
  }

  const popoverIsOpen = isZapControlsOpen();

  if (!popoverIsOpen) {
    openZapControls({ focus: true });
    return;
  }

  if (zapInFlight) {
    return;
  }

  closeZapControls({ focusButton: true });
}

async function handleZapSend(event) {
  if (event?.preventDefault) {
    event.preventDefault();
  }

  const zapButton = getChannelZapButton();
  const amountInput = getZapAmountInput();
  const sendButton = getZapSendButton();
  const app = getApp();

  if (!amountInput || !sendButton) {
    return;
  }

  if (sendButton.dataset.completed === "true") {
    closeZapControls({ focusButton: true });
    return;
  }

  if (!zapPopover || zapPopoverTrigger !== zapButton) {
    setupZapButton({ force: true });
  }

  if (!isZapControlsOpen()) {
    if (zapPopoverOpenPromise) {
      zapShouldFocusOnOpen = true;
      return;
    }
    openZapControls({ focus: true });
    return;
  }

  if (zapPopoverOpenPromise) {
    return;
  }

  if (!zapPopover) {
    return;
  }

  if (!currentChannelLightningAddress) {
    const message = "This creator has not configured a Lightning address yet.";
    setZapStatus(message, "error");
    app?.showError?.(message);
    return;
  }

  if (zapInFlight) {
    return;
  }

  const walletSettings = getWalletSettingsOrPrompt();
  if (!walletSettings) {
    return;
  }

  zapInFlight = true;
  if (zapButton) {
    zapButton.disabled = true;
    zapButton.setAttribute("aria-disabled", "true");
  }
  sendButton.disabled = true;
  sendButton.setAttribute("aria-busy", "true");
  sendButton.dataset.state = "loading";
  amountInput.disabled = true;

  let attemptedAmount = null;
  try {
    if (pendingZapRetry?.shares?.length) {
      await executePendingRetry({ walletSettings });
      return;
    }

    const amount = Math.max(0, Math.round(Number(amountInput.value || 0)));
    attemptedAmount = amount;
    if (!amount) {
      const message = "Enter a zap amount greater than zero.";
      setZapStatus(message, "error");
      app?.showError?.(message);
      return;
    }

    clearZapReceipts();
    setZapStatus(`Sending ${amount} sats…`, "warning");

    const attempt = await runZapAttempt({ amount, walletSettings });
    if (!attempt) {
      setZapStatus("", "neutral");
      return;
    }

    const { context, result } = attempt;
    const receipts = Array.isArray(result?.receipts) ? result.receipts : [];

    const failureReceipts = receipts.filter((receipt) => {
      if (!receipt || typeof receipt !== "object") {
        return false;
      }
      if (typeof receipt.status === "string" && receipt.status !== "success") {
        return true;
      }
      return Boolean(receipt.error);
    });

    if (failureReceipts.length) {
      renderZapReceipts(receipts, { partial: true });

      const failureShares = failureReceipts
        .map((receipt) => {
          const amount = Math.max(0, Math.round(Number(receipt.amount) || 0));
          return {
            type: receipt.recipientType || receipt.type || "creator",
            amount,
            address:
              typeof receipt.address === "string" && receipt.address
                ? receipt.address
                : undefined,
            error: receipt.error
          };
        })
        .filter((share) => share.amount > 0);

      if (failureShares.length) {
        markZapRetryPending(failureShares);
      }

      const shareSummary = failureShares
        .map((share) => `${describeShareType(share.type)} ${share.amount} sats`)
        .join(", ");

      const failureMessage = failureReceipts
        .map((receipt) => {
          if (typeof receipt?.error?.message === "string") {
            return receipt.error.message;
          }
          if (typeof receipt?.error === "string") {
            return receipt.error;
          }
          return "";
        })
        .find((message) => message);

      const budgetReceipt = failureReceipts.find((receipt) =>
        isZapAllowanceExhaustedError(receipt?.error)
      );
      const isBudgetExceeded =
        Boolean(budgetReceipt) ||
        (typeof failureMessage === "string" && /budget exceeded/i.test(failureMessage));

      let warningMessage;
      if (isBudgetExceeded) {
        warningMessage =
          "Budget exceeded. Increase your wallet zap limit or reduce the platform fee, then retry the remaining shares.";
      } else if (failureMessage) {
        warningMessage = failureMessage;
      } else {
        warningMessage =
          "Some zap shares failed. Press Send again to retry the remaining shares.";
      }

      if (shareSummary) {
        const normalized = warningMessage.replace(/\.*$/, "");
        warningMessage = `${normalized}. Remaining share(s): ${shareSummary}.`;
      }

      setZapStatus(warningMessage, "warning");
      app?.showError?.(warningMessage);
      return;
    }

    renderZapReceipts(receipts, { partial: false });

    const creatorShare = context.shares.creatorShare;
    const platformShare = context.shares.platformShare;
    const summary = platformShare
      ? `Sent ${context.shares.total} sats (creator ${creatorShare}, platform ${platformShare}).`
      : `Sent ${context.shares.total} sats to the creator.`;
    setZapStatus(summary, "success");
    app?.showSuccess?.("Zap sent successfully!");
    resetZapRetryState();
    setZapCompleted(true);
  } catch (error) {
    const tracker = Array.isArray(error?.__zapShareTracker)
      ? error.__zapShareTracker
      : [];
    logZapError(
      "handleZapSend",
      {
        amount: attemptedAmount,
        walletSettings,
        tracker,
        retryAttempt:
          Array.isArray(pendingZapRetry?.shares) &&
          pendingZapRetry.shares.length
            ? pendingZapRetry.shares.length
            : undefined
      },
      error
    );
    if (tracker.length) {
      renderZapReceipts(tracker, { partial: true });
    }

    const failureShares = tracker.filter(
      (entry) => entry && entry.status !== "success" && entry.amount > 0
    );
    const allowanceExhausted =
      isZapAllowanceExhaustedError(error) ||
      failureShares.some((share) =>
        isZapAllowanceExhaustedError(share?.error)
      );
    if (allowanceExhausted) {
      resetZapRetryState();
    }

    if (failureShares.length) {
      if (allowanceExhausted) {
        const allowanceShare = failureShares.find((share) =>
          isZapAllowanceExhaustedError(share?.error)
        );
        const allowanceMessage = buildZapAllowanceExhaustedMessage(
          isZapAllowanceExhaustedError(error) ? error : allowanceShare?.error
        );
        const partialSuccess = tracker.length > failureShares.length;
        const tone = partialSuccess ? "warning" : "error";
        const statusMessage = partialSuccess
          ? `Some zap shares succeeded before your wallet allowance was exhausted. ${allowanceMessage}`
          : allowanceMessage;
        setZapStatus(statusMessage, tone);
        app?.showError?.(statusMessage);
      } else {
        markZapRetryPending(failureShares);
        const summary = failureShares
          .map((share) => `${describeShareType(share.type)} ${share.amount} sats`)
          .join(", ");
        const tone = tracker.length > failureShares.length ? "warning" : "error";
        const statusMessage =
          tracker.length > failureShares.length
            ? `Partial zap failure. Press Send again to retry: ${summary}.`
            : `Zap failed. Press Send again to retry: ${summary}.`;
        setZapStatus(statusMessage, tone);
        app?.showError?.(error?.message || statusMessage);
      }
    } else {
      resetZapRetryState();
      if (allowanceExhausted) {
        const allowanceMessage = buildZapAllowanceExhaustedMessage(error);
        setZapStatus(allowanceMessage, "error");
        app?.showError?.(allowanceMessage);
      } else {
        const message = error?.message || "Zap failed. Please try again.";
        setZapStatus(message, "error");
        app?.showError?.(message);
      }
    }
  } finally {
    zapInFlight = false;
    if (zapButton) {
      zapButton.disabled = false;
      zapButton.removeAttribute("aria-disabled");
    }
    sendButton.disabled = false;
    sendButton.removeAttribute("aria-busy");
    delete sendButton.dataset.state;
    amountInput.disabled = false;
  }
}

function buildChannelShareUrl() {
  if (!currentChannelNpub) {
    return "";
  }

  const app = getApp();
  const base =
    typeof app?.getShareUrlBase === "function" ? app.getShareUrlBase() : "";
  if (base) {
    return `${base}#view=channel-profile&npub=${encodeURIComponent(currentChannelNpub)}`;
  }

  try {
    const url = new URL(window.location.href);
    url.search = "";
    url.hash = `#view=channel-profile&npub=${currentChannelNpub}`;
    return url.toString();
  } catch (error) {
    userLogger.warn("Falling back to basic channel share URL:", error);
    const origin = window.location?.origin || "";
    const pathname = window.location?.pathname || "";
    if (!origin && !pathname) {
      return "";
    }
    return `${origin}${pathname}#view=channel-profile&npub=${currentChannelNpub}`;
  }
}

function syncChannelShareButtonState() {
  const shareBtn = getChannelShareButton();
  if (!shareBtn) {
    return;
  }
  const hasNpub = typeof currentChannelNpub === "string" && currentChannelNpub;
  shareBtn.disabled = !hasNpub;
  shareBtn.setAttribute("aria-disabled", (!hasNpub).toString());
  shareBtn.classList.toggle("opacity-50", !hasNpub);
  shareBtn.classList.toggle("cursor-not-allowed", !hasNpub);
}

function setupChannelShareButton() {
  const shareBtn = getChannelShareButton();
  if (!shareBtn) {
    return;
  }

  const app = getApp();

  syncChannelShareButtonState();

  if (shareBtn.dataset.initialized === "true") {
    return;
  }

  shareBtn.addEventListener("click", () => {
    const shareUrl = buildChannelShareUrl();
    if (!shareUrl) {
      app?.showError?.("Could not generate channel link.");
      return;
    }

    navigator.clipboard
      .writeText(shareUrl)
      .then(() => app?.showSuccess?.("Channel link copied to clipboard!"))
      .catch(() => app?.showError?.("Failed to copy the link."));
  });

  shareBtn.dataset.initialized = "true";
}

function resolveChannelHexForControls() {
  const normalized = normalizeHex(currentChannelHex);
  if (normalized) {
    return normalized;
  }
  return decodeNpubToHex(currentChannelNpub);
}

function setupChannelMessageControls() {
  const doc = typeof document !== "undefined" ? document : null;
  const messageBtn = doc?.getElementById("channelMessageBtn") || null;

  if (!messageBtn) {
    return;
  }

  const channelHex = resolveChannelHexForControls();
  if (!channelHex) {
    devLogger.warn("[ChannelProfile] Unable to resolve channel hex for controls.");
  }

  if (messageBtn) {
    if (messageBtn.dataset.initialized !== "true") {
      messageBtn.addEventListener("click", () => {
        const app = getApp();
        const resolvedHex = resolveChannelHexForControls();
        if (!resolvedHex) {
          app?.showError?.("Unable to resolve channel messages.");
          userLogger.warn("Channel message clicked without a valid channel hex.");
          return;
        }

        if (typeof app?.openDirectMessageComposer === "function") {
          app.openDirectMessageComposer({
            recipientPubkey: resolvedHex,
            source: "channel-profile",
          });
          return;
        }

        const controller = app?.profileController;
        if (!controller) {
          app?.showError?.("Messages are unavailable right now.");
          userLogger.warn(
            "Profile controller unavailable for channel messages."
          );
          return;
        }

        if (typeof controller.handleActiveDmIdentityChanged === "function") {
          controller.handleActiveDmIdentityChanged(resolvedHex);
        } else {
          userLogger.warn(
            "Profile controller missing handleActiveDmIdentityChanged."
          );
        }

        if (typeof controller.show === "function") {
          controller.show("messages");
        } else {
          app?.showError?.("Messages are unavailable right now.");
          userLogger.warn("Profile controller missing show() for messages.");
        }
      });
      messageBtn.dataset.initialized = "true";
    }
  }
}

function setupChannelMoreMenu() {
  const doc = typeof document !== "undefined" ? document : null;
  const moreBtn = doc?.getElementById("channelMoreBtn") || null;

  if (!moreBtn) {
    if (channelMenuPopover?.destroy) {
      channelMenuPopover.destroy();
    }
    channelMenuPopover = null;
    cachedChannelMenu = null;
    channelMenuOpen = false;
    return;
  }

  if (channelMenuPopover?.destroy) {
    channelMenuPopover.destroy();
    channelMenuPopover = null;
  }

  const documentRef =
    moreBtn.ownerDocument || (typeof document !== "undefined" ? document : null);

  const render = ({ document: docRef }) => {
    const panel = createChannelProfileMenuPanel({
      document: docRef,
      context: "channel-profile",
    });

    if (!panel) {
      return null;
    }

    panel.id = "channelProfileMoreMenu";
    panel.dataset.state = panel.dataset.state || "closed";
    panel.setAttribute("aria-hidden", "true");
    panel.hidden = true;

    cachedChannelMenu = panel;

    const buttons = panel.querySelectorAll("button[data-action]");
    buttons.forEach((button) => {
      if (button.dataset.channelMenuBound === "true") {
        return;
      }
      button.dataset.channelMenuBound = "true";
      button.addEventListener("click", async (event) => {
        event.preventDefault();
        event.stopPropagation();

        const dataset = {};
        Object.entries(button.dataset || {}).forEach(([key, value]) => {
          if (key === "channelMenuBound") {
            return;
          }
          dataset[key] = value;
        });
        if (!dataset.context) {
          dataset.context = "channel-profile";
        }
        if (!dataset.author && currentChannelHex) {
          dataset.author = currentChannelHex;
        }
        if (!dataset.npub && currentChannelNpub) {
          dataset.npub = currentChannelNpub;
        }

        const action = dataset.action || "";
        try {
          await handleChannelMenuAction(action, dataset);
        } finally {
          channelMenuPopover?.close();
        }
      });
    });

    updateChannelMenuState();

    return panel;
  };

  const popover = createPopover(moreBtn, render, {
    document: documentRef,
    placement: "bottom-end",
    restoreFocusOnClose: true,
  });

  if (!popover) {
    return;
  }

  const originalOpen = popover.open?.bind(popover);
  if (originalOpen) {
    popover.open = async (...args) => {
      const result = await originalOpen(...args);
      if (result) {
        channelMenuOpen = true;
        const panel = getChannelMenuElement();
        if (panel) {
          panel.dataset.state = "open";
          panel.hidden = false;
          panel.setAttribute("aria-hidden", "false");
        }
        moreBtn.setAttribute("aria-expanded", "true");
      }
      return result;
    };
  }

  const originalClose = popover.close?.bind(popover);
  if (originalClose) {
    popover.close = (options = {}) => {
      const wasOpen = typeof popover.isOpen === "function" && popover.isOpen();
      const result = originalClose(options);
      if (wasOpen && result) {
        channelMenuOpen = false;
        const panel = getChannelMenuElement();
        if (panel) {
          panel.dataset.state = "closed";
          panel.hidden = true;
          panel.setAttribute("aria-hidden", "true");
        }
        moreBtn.setAttribute("aria-expanded", "false");
      }
      return result;
    };
  }

  const originalDestroy = popover.destroy?.bind(popover);
  if (originalDestroy) {
    popover.destroy = (...args) => {
      originalDestroy(...args);
      if (channelMenuPopover === popover) {
        channelMenuPopover = null;
      }
      channelMenuOpen = false;
      cachedChannelMenu = null;
    };
  }

  channelMenuPopover = popover;

  if (moreBtn.dataset.initialized !== "true") {
    moreBtn.addEventListener("click", (event) => {
      event.preventDefault();
      event.stopPropagation();
      if (!channelMenuPopover) {
        return;
      }
      channelMenuPopover.toggle();
    });
    moreBtn.dataset.initialized = "true";
  }

  moreBtn.setAttribute("aria-expanded", "false");
}

async function handleChannelMenuAction(action, dataset = {}) {
  const normalized = typeof action === "string" ? action.trim() : "";
  if (!normalized) {
    return;
  }

  const detail = { ...dataset };
  if (!detail.context) {
    detail.context = "channel-profile";
  }
  if (!detail.author && currentChannelHex) {
    detail.author = currentChannelHex;
  }
  if (!detail.npub && currentChannelNpub) {
    detail.npub = currentChannelNpub;
  }

  const app = getApp();

  try {
    await app?.handleMoreMenuAction?.(normalized, detail);
  } catch (error) {
    userLogger.error("Failed to handle channel menu action:", error);
  }
}

async function updateChannelMenuState() {
  const menu = getChannelMenuElement();
  if (!menu) {
    return;
  }

  const app = getApp();

  try {
    await accessControl.ensureReady();
  } catch (error) {
    userLogger.warn("Failed to refresh moderation lists for channel menu:", error);
  }

  try {
    await moderationService.ensureViewerMuteListLoaded();
  } catch (error) {
    userLogger.warn("Failed to refresh viewer mute list for channel menu:", error);
  }

  const canBlacklist =
    typeof app?.canCurrentUserManageBlacklist === "function"
      ? app.canCurrentUserManageBlacklist()
      : false;

  const buttons = menu.querySelectorAll("button[data-action]");
  const toggleButtonVisibility = (button, shouldShow) => {
    if (!button) {
      return;
    }
    if (shouldShow) {
      button.removeAttribute("hidden");
      button.setAttribute("aria-hidden", "false");
    } else {
      button.setAttribute("hidden", "");
      button.setAttribute("aria-hidden", "true");
    }
  };

  buttons.forEach((button) => {
    if (!button || button.nodeType !== 1) {
      return;
    }

    const action = button.dataset.action || "";
    if (action === "copy-npub") {
      if (currentChannelNpub) {
        button.dataset.npub = currentChannelNpub;
        button.removeAttribute("hidden");
        button.setAttribute("aria-hidden", "false");
      } else {
        delete button.dataset.npub;
        button.setAttribute("aria-hidden", "true");
        button.setAttribute("hidden", "");
      }
      return;
    }

    if (action === "block-author") {
      if (currentChannelHex) {
        button.dataset.author = currentChannelHex;
        button.removeAttribute("hidden");
        button.setAttribute("aria-hidden", "false");
      } else {
        delete button.dataset.author;
        button.setAttribute("aria-hidden", "true");
        button.setAttribute("hidden", "");
      }
      return;
    }

    if (action === "mute-author" || action === "unmute-author") {
      if (currentChannelHex) {
        button.dataset.author = currentChannelHex;
      } else {
        delete button.dataset.author;
      }

      let isMuted = false;
      if (currentChannelHex) {
        try {
          isMuted = moderationService.isAuthorMutedByViewer(currentChannelHex) === true;
        } catch (error) {
          userLogger.warn("Failed to resolve viewer mute state for channel menu:", error);
        }
      }

      const shouldShow = action === "mute-author" ? !isMuted : isMuted;
      toggleButtonVisibility(button, shouldShow && !!currentChannelHex);
      return;
    }

    if (action === "blacklist-author") {
      if (canBlacklist && currentChannelHex) {
        button.dataset.author = currentChannelHex;
        if (currentChannelNpub) {
          button.dataset.npub = currentChannelNpub;
        } else {
          delete button.dataset.npub;
        }
        button.removeAttribute("hidden");
        button.setAttribute("aria-hidden", "false");
      } else {
        delete button.dataset.author;
        delete button.dataset.npub;
        button.setAttribute("aria-hidden", "true");
        button.setAttribute("hidden", "");
      }
    }
  });
}

/**
 * Initialize the channel profile view.
 * Called when #view=channel-profile&npub=...
 */
export async function initChannelProfileView() {
  // 1) Get npub from hash
  const hashParams = new URLSearchParams(window.location.hash.slice(1));
  const npub = hashParams.get("npub");
  if (!npub) {
    userLogger.error(
      "No npub found in hash (e.g. #view=channel-profile&npub=...)"
    );
    return;
  }

  const infoTrigger = document.getElementById("channelInfoTrigger");
  if (infoTrigger) {
    attachFeedInfoPopover(
      infoTrigger,
      "Videos published by this creator."
    );
  }

  currentChannelHex = null;
  currentChannelNpub = null;
  currentChannelLightningAddress = "";
  currentChannelProfileEvent = null;
  currentChannelProfileSnapshot = null;
  currentChannelProfileHasExplicitPayload = false;
  setCachedPlatformLightningAddress("");
  resetZapRetryState();
  clearZapReceipts();
  setZapStatus("", "neutral");

  // 2) Decode npub => hex pubkey
  let hexPub;
  try {
    const decoded = window.NostrTools.nip19.decode(npub);
    if (decoded.type === "npub" && decoded.data) {
      if (typeof decoded.data === "string") {
        hexPub = decoded.data;
      } else {
        let bufferSource = null;
        if (decoded.data instanceof Uint8Array) {
          bufferSource = decoded.data;
        } else if (Array.isArray(decoded.data)) {
          bufferSource = Uint8Array.from(decoded.data);
        } else if (
          decoded.data?.type === "Buffer" &&
          Array.isArray(decoded.data?.data)
        ) {
          bufferSource = Uint8Array.from(decoded.data.data);
        }

        if (bufferSource) {
          if (typeof window?.NostrTools?.utils?.bytesToHex === "function") {
            hexPub = window.NostrTools.utils.bytesToHex(bufferSource);
          } else {
            hexPub = Array.from(bufferSource)
              .map((byte) => byte.toString(16).padStart(2, "0"))
              .join("");
          }
        }
      }

      if (typeof hexPub !== "string" || !hexPub) {
        throw new Error("Unable to normalize npub to hex string.");
      }

      hexPub = hexPub.trim().toLowerCase();
    } else {
      throw new Error("Invalid npub decoding result.");
    }
  } catch (err) {
    userLogger.error("Error decoding npub:", err);
    return;
  }

  currentChannelHex = hexPub;
  currentChannelNpub = npub;

  const app = getApp();

  ensureChannelModerationEvents();

  updateChannelModerationVisuals({ app, pubkey: currentChannelHex });

  setupChannelShareButton();
  setupChannelMessageControls();
  setupChannelMoreMenu();

  const initialMenuRefresh = updateChannelMenuState().catch((error) => {
    userLogger.error("Failed to prepare channel menu state:", error);
  });

  let subscriptionsTask = null;
  // 3) Load subscription state when logged in, but always render the toggle UI
  if (app?.pubkey) {
    subscriptionsTask = subscriptions
      .ensureLoaded(app.pubkey)
      .catch((error) => {
        userLogger.error("Failed to load subscriptions for channel view:", error);
      })
      .finally(() => {
        renderSubscribeButton(hexPub);
      });
  } else {
    renderSubscribeButton(hexPub);
  }

  setupZapButton();
  setChannelZapVisibility(false);
  syncChannelShareButtonState();

  // 4) Load user’s profile (banner, avatar, etc.) and channel videos
  const profilePromise = loadUserProfile(hexPub)
    .then(() => updateChannelMenuState())
    .catch((error) => {
      userLogger.error("Failed to load channel profile:", error);
    })
    .finally(() => {
      syncChannelShareButtonState();
    });

  const videosPromise = loadUserVideos(hexPub).catch((error) => {
    userLogger.error("Failed to load channel videos:", error);
  });

  const pendingTasks = [profilePromise, videosPromise];
  if (initialMenuRefresh) {
    pendingTasks.push(initialMenuRefresh);
  }
  if (subscriptionsTask) {
    pendingTasks.push(subscriptionsTask);
  }

  await Promise.allSettled(pendingTasks);
}

export function __setChannelProfileTestState({ pubkey, npub } = {}) {
  if (typeof pubkey !== "undefined") {
    if (typeof pubkey === "string" && pubkey) {
      currentChannelHex = pubkey;
    } else {
      currentChannelHex = null;
    }
  }

  if (typeof npub !== "undefined") {
    if (typeof npub === "string" && npub) {
      currentChannelNpub = npub;
    } else {
      currentChannelNpub = null;
    }
  }
}

export function __ensureChannelModerationEventsForTests() {
  ensureChannelModerationEvents();
}

function setupZapButton({ force = false } = {}) {
  const zapButton = getChannelZapButton();
  if (!zapButton) {
    return false;
  }

  if (!force && zapPopover && zapPopoverTrigger === zapButton) {
    if (zapButton.dataset.initialized === "true") {
      return true;
    }
  }

  if (zapPopover?.destroy) {
    zapPopover.destroy();
    zapPopover = null;
    zapPopoverTrigger = null;
    zapPopoverOpenPromise = null;
    zapShouldFocusOnOpen = false;
    delete zapButton.dataset.zapPopoverWarmBound;
  }

  const documentRef =
    zapButton.ownerDocument ||
    (typeof document !== "undefined" ? document : null);

  const render = ({ document: doc }) => {
    if (!doc || typeof doc.createElement !== "function") {
      return null;
    }

    const panel = doc.createElement("div");
    panel.id = "zapControls";
    panel.className = "popover__panel card w-72 max-w-popover-safe p-4";
    panel.dataset.variant = "zap";
    panel.setAttribute("role", "dialog");
    panel.setAttribute("aria-label", "Channel zap dialog");
    panel.setAttribute("aria-hidden", "true");
    panel.dataset.state = panel.dataset.state || "closed";
    panel.hidden = true;

    panel.innerHTML = `
      <div class="grid gap-4">
        <div class="flex items-center justify-between gap-4">
          <h3 class="text-xs font-semibold uppercase tracking-wide text-muted-strong">
            Send a zap
          </h3>
          <button
            type="button"
            id="zapCloseBtn"
            class="btn-ghost px-2 py-1 text-xs"
            aria-label="Close zap dialog"
          >
            ✕
          </button>
        </div>
        <p
          id="zapWalletPrompt"
          class="text-sm text-muted"
          aria-hidden="true"
          hidden
        >
          Connect a wallet in
          <button
            type="button"
            id="zapWalletLink"
            class="btn-ghost px-2 py-1 text-xs"
          >
            Wallet Connect settings
          </button>
          to send zaps.
        </p>
        <form id="zapForm" class="bv-stack bv-stack--tight">
          <div>
            <label
              for="zapAmountInput"
              id="zapAmountLabel"
              class="mb-2 block text-xs font-semibold uppercase tracking-wide text-muted-strong"
            >
              Zap amount (sats)
            </label>
            <input
              id="zapAmountInput"
              type="number"
              min="1"
              step="1"
              inputmode="numeric"
              class="input"
              placeholder="Enter sats"
              aria-labelledby="zapAmountLabel"
            />
          </div>
          <p
            id="zapSplitSummary"
            class="text-sm text-muted"
            aria-live="polite"
          >
            Enter an amount to view the split.
          </p>
          <p
            id="zapStatus"
            class="text-xs text-muted"
            role="status"
            aria-live="polite"
          ></p>
          <ul
            id="zapReceipts"
            class="space-y-2 text-xs text-muted"
          ></ul>
          <div class="flex items-center justify-end gap-2">
            <button
              type="submit"
              id="zapSendBtn"
              class="btn"
              aria-label="Send a zap"
            >
              Send
            </button>
          </div>
        </form>
      </div>
    `;

    cacheZapPanelElements(panel);
    initializeZapPanel();

    return panel;
  };

  const popover = createPopover(zapButton, render, {
    document: documentRef,
    placement: "bottom-end",
    restoreFocusOnClose: true,
    maxWidthToken: "max-w-popover-safe",
  });

  if (!popover) {
    zapPopoverOpenPromise = null;
    zapShouldFocusOnOpen = false;
    return false;
  }

  const originalOpen = popover.open?.bind(popover);
  if (originalOpen) {
    popover.open = async (...args) => {
      let result;
      try {
        result = await originalOpen(...args);
      } catch (error) {
        zapPopoverOpenPromise = null;
        zapShouldFocusOnOpen = false;
        throw error;
      }
      if (result) {
        zapControlsOpen = true;
        const controls = getZapControlsContainer();
        if (controls) {
          controls.dataset.state = "open";
          controls.hidden = false;
          controls.setAttribute("aria-hidden", "false");
        }
        zapButton.setAttribute("aria-expanded", "true");
        if (zapShouldFocusOnOpen) {
          focusZapAmountField();
        }
      }
      zapShouldFocusOnOpen = false;
      return result;
    };
  }

  const originalClose = popover.close?.bind(popover);
  if (originalClose) {
    popover.close = (options = {}) => {
      const wasOpen = typeof popover.isOpen === "function" && popover.isOpen();
      const result = originalClose(options);
      if (wasOpen && result) {
        zapControlsOpen = false;
        const controls = getZapControlsContainer();
        if (controls) {
          controls.dataset.state = "closed";
          controls.hidden = true;
          controls.setAttribute("aria-hidden", "true");
        }
        zapButton.setAttribute("aria-expanded", "false");
      }
      zapShouldFocusOnOpen = false;
      zapPopoverOpenPromise = null;
      return result;
    };
  }

  const originalDestroy = popover.destroy?.bind(popover);
  if (originalDestroy) {
    popover.destroy = (...args) => {
      originalDestroy(...args);
      if (zapPopover === popover) {
        zapPopover = null;
        zapPopoverTrigger = null;
      }
      zapPopoverOpenPromise = null;
      zapShouldFocusOnOpen = false;
      cacheZapPanelElements(null);
    };
  }

  zapPopover = popover;
  zapPopoverTrigger = zapButton;

  const warmZapPopover = () => {
    if (!zapPopover || zapPopover !== popover) {
      return;
    }
    if (zapButton.hasAttribute("hidden")) {
      return;
    }
    if (typeof popover.preload !== "function") {
      return;
    }
    try {
      popover.preload();
    } catch (error) {
      devLogger.warn("[zap] Failed to preload zap controls", error);
    }
  };

  if (
    typeof popover.preload === "function" &&
    !zapButton.hasAttribute("hidden")
  ) {
    if (
      typeof window !== "undefined" &&
      typeof window.requestIdleCallback === "function"
    ) {
      window.requestIdleCallback(() => warmZapPopover(), { timeout: 250 });
    } else {
      setTimeout(() => {
        warmZapPopover();
      }, 0);
    }
  }

  if (zapButton.dataset.zapPopoverWarmBound !== "true") {
    const handleWarm = () => {
      warmZapPopover();
    };
    zapButton.addEventListener("pointerenter", handleWarm, { once: true });
    zapButton.addEventListener("pointerdown", handleWarm, { once: true });
    zapButton.addEventListener("focus", handleWarm, { once: true });
    zapButton.dataset.zapPopoverWarmBound = "true";
  }

  if (zapButton.dataset.initialized !== "true") {
    zapButton.addEventListener("click", handleZapButtonClick);
    zapButton.dataset.initialized = "true";
  }

  return true;
}

/**
 * Renders a Subscribe / Unsubscribe button with an icon,
 * using the primary button token styling and the subscribe icon on the left.
 */
function renderSubscribeButton(channelHex) {
  const container = document.getElementById("subscribeBtnArea");
  if (!container) return;

  const app = getApp();
  const isLoggedIn = Boolean(app?.pubkey);

  container.classList.remove("hidden");
  const alreadySubscribed =
    isLoggedIn && subscriptions.isSubscribed(channelHex);

  // Both subscribe/unsubscribe states share the primary styling and icon.
  // If you prefer separate logic for unsub, you can do it here.
  container.innerHTML = `
    <button
      id="subscribeToggleBtn"
      type="button"
      class="btn normal-case rounded hover:opacity-90 focus-visible:bg-primary"
      data-state="${alreadySubscribed ? "subscribed" : "unsubscribed"}"
    >
      <img
        src="assets/svg/subscribe-button-icon.svg"
        alt="Subscribe Icon"
        class="w-5 h-5"
      />
      <span>${alreadySubscribed ? "Unsubscribe" : "Subscribe"}</span>
    </button>
  `;

  const toggleBtn = document.getElementById("subscribeToggleBtn");
  if (toggleBtn) {
    toggleBtn.addEventListener("click", async () => {
      const currentApp = getApp();
      if (!currentApp?.pubkey) {
        const loginModal =
          prepareStaticModal({ id: "loginModal" }) ||
          document.getElementById("loginModal");

        if (
          loginModal &&
          openStaticModal(loginModal, { triggerElement: toggleBtn })
        ) {
          setGlobalModalState("login", true);
        } else {
          userLogger.warn(
            "Unable to open login modal for subscription toggle."
          );
        }
        return;
      }
      try {
        await subscriptions.toggleChannel(channelHex, currentApp.pubkey);
        // Re-render the button so it toggles state
        renderSubscribeButton(channelHex);
      } catch (err) {
        userLogger.error("Failed to update subscription:", err);
        const permissionErrorCodes = new Set([
          "extension-permission-denied",
          "nip04-missing",
        ]);
        const message = permissionErrorCodes.has(err?.code)
          ? "Your Nostr extension must support NIP-04 to manage private lists."
          : "Failed to update your subscriptions. Please try again.";
        currentApp?.showError?.(message);
      }
    });
  }
}

function trimProfileString(value) {
  if (typeof value !== "string") {
    return "";
  }

  return value.trim();
}

function normalizeChannelProfileMetadata(raw = {}) {
  const name =
    trimProfileString(raw.display_name) ||
    trimProfileString(raw.name) ||
    "Unknown User";
  const picture =
    sanitizeProfileMediaUrl(raw.picture) ||
    sanitizeProfileMediaUrl(raw.image) ||
    FALLBACK_CHANNEL_AVATAR;
  const about = trimProfileString(raw.about || raw.bio);
  const website = trimProfileString(raw.website || raw.url);
  const banner =
    sanitizeProfileMediaUrl(
      raw.banner ||
        raw.header ||
        raw.background ||
        raw.cover ||
        raw.cover_image ||
        raw.coverImage
    ) || "";
  const lud16 = trimProfileString(raw.lud16);
  const lud06 = trimProfileString(raw.lud06);
  const lightningAddress =
    trimProfileString(raw.lightningAddress) || lud16 || lud06 || "";

  return {
    name,
    picture,
    about,
    website,
    banner,
    lud16,
    lud06,
    lightningAddress
  };
}

function rememberChannelProfile(pubkey, { profile = {}, event = null } = {}) {
  if (typeof pubkey !== "string" || !pubkey) {
    return false;
  }

  const hasPayload = hasExplicitChannelProfilePayload(profile);
  if (!hasPayload) {
    touchChannelProfileCacheEntry(pubkey);
    return false;
  }

  const incomingEventTimestamp =
    typeof event?.created_at === "number" ? event.created_at : 0;
  const existing = channelProfileMetadataCache.get(pubkey);
  const existingEventTimestamp =
    typeof existing?.event?.created_at === "number"
      ? existing.event.created_at
      : 0;

  if (
    existingEventTimestamp &&
    incomingEventTimestamp &&
    incomingEventTimestamp < existingEventTimestamp
  ) {
    touchChannelProfileCacheEntry(pubkey);
    return false;
  }

  channelProfileMetadataCache.set(pubkey, {
    timestamp: Date.now(),
    profile: normalizeChannelProfileMetadata(profile),
    event: event ? { ...event } : null
  });

  return true;
}

function getCachedChannelProfile(pubkey) {
  const entry = channelProfileMetadataCache.get(pubkey);
  if (!entry) {
    return null;
  }

  if (
    typeof entry.timestamp !== "number" ||
    Date.now() - entry.timestamp > PROFILE_EVENT_CACHE_TTL_MS
  ) {
    channelProfileMetadataCache.delete(pubkey);
    return null;
  }

  return {
    profile: entry.profile,
    event: entry.event ? { ...entry.event } : null
  };
}

function isValidRelayUrl(url) {
  if (typeof url !== "string") {
    return false;
  }

  const trimmed = url.trim();
  if (!trimmed) {
    return false;
  }

  if (!/^wss?:\/\//i.test(trimmed)) {
    return false;
  }

  if (/\s/.test(trimmed)) {
    return false;
  }

  try {
    const parsed = new URL(trimmed);
    return Boolean(parsed.hostname);
  } catch (error) {
    return false;
  }
}

function getCachedChannelVideoEvents(pubkey) {
  const normalized =
    typeof pubkey === "string" ? pubkey.trim().toLowerCase() : "";
  if (!normalized) {
    return [];
  }

  const collectMatches = (source, iterator) => {
    const matches = [];
    if (!source || typeof iterator !== "function") {
      return matches;
    }

    iterator((event) => {
      const candidate = event || null;
      if (!candidate) {
        return;
      }

      const candidatePubkey =
        typeof candidate.pubkey === "string"
          ? candidate.pubkey.trim().toLowerCase()
          : "";

      if (!candidatePubkey || candidatePubkey !== normalized) {
        return;
      }

      matches.push(candidate);
    });

    return matches;
  };

  const rawMatches = collectMatches(nostrClient?.rawEvents, (callback) => {
    if (
      nostrClient?.rawEvents &&
      typeof nostrClient.rawEvents.forEach === "function"
    ) {
      nostrClient.rawEvents.forEach((event) => {
        if (event?.kind === 30078) {
          callback(event);
        }
      });
    }
  });

  if (rawMatches.length) {
    return rawMatches;
  }

  const processedMatches = collectMatches(
    nostrClient?.allEvents,
    (callback) => {
      if (
        nostrClient?.allEvents &&
        typeof nostrClient.allEvents.forEach === "function"
      ) {
        nostrClient.allEvents.forEach((video) => {
          if (video) {
            callback(video);
          }
        });
      }
    }
  );

  return processedMatches;
}

function normalizeRenderableChannelVideo(entry) {
  if (!entry || typeof entry !== "object") {
    return null;
  }

  const looksLikeRawEvent =
    typeof entry.content === "string" ||
    Array.isArray(entry.tags) ||
    typeof entry.kind === "number";

  if (looksLikeRawEvent) {
    const converted = sharedConvertEventToVideo(entry);
    if (converted && !converted.invalid) {
      return converted;
    }
    return null;
  }

  const looksLikeConvertedVideo =
    typeof entry.id === "string" &&
    typeof entry.title === "string" &&
    typeof entry.pubkey === "string" &&
    Number.isFinite(entry.created_at);

  if (looksLikeConvertedVideo) {
    if (entry.invalid) {
      return null;
    }

    return {
      ...entry,
      invalid: false,
    };
  }

  return null;
}

function buildRenderableChannelVideos({ events = [], app } = {}) {
  if (!Array.isArray(events) || events.length === 0) {
    return [];
  }

  const convertedVideos = events
    .map((entry) => normalizeRenderableChannelVideo(entry))
    .filter((vid) => vid && !vid.invalid);

  if (!convertedVideos.length) {
    return [];
  }

  const dedupedById = new Map();
  convertedVideos.forEach((video) => {
    if (video?.id && !dedupedById.has(video.id)) {
      dedupedById.set(video.id, video);
    }
  });

  const uniqueVideos = Array.from(dedupedById.values());

  const newestByRoot =
    app?.dedupeVideosByRoot?.(uniqueVideos) ??
    dedupeToNewestByRoot(uniqueVideos);

  let videos = newestByRoot.filter((video) => !video.deleted);
  videos = videos.filter((video) => {
    if (!video || !video.id) {
      return false;
    }

    if (app?.blacklistedEventIds?.has?.(video.id)) {
      return false;
    }

    if (!accessControl.canAccess(video)) {
      return false;
    }

    return true;
  });

  videos.sort((a, b) => b.created_at - a.created_at);
  return videos;
}

export async function renderChannelVideosFromList({
  videos = [],
  container,
  app,
  loadToken,
  allowEmptyMessage = true
} = {}) {
  if (!container) {
    if (loadToken === currentVideoLoadToken) {
      clearChannelVideoCardRegistry();
    }
    return false;
  }

  if (loadToken !== currentVideoLoadToken) {
    return false;
  }

  clearChannelVideoCardRegistry();

  if (!Array.isArray(videos) || videos.length === 0) {
    if (allowEmptyMessage) {
      container.dataset.hasChannelVideos = "false";
      container.innerHTML = `<p class="text-muted-strong">No videos to display.</p>`;
      return true;
    }
    return false;
  }

  let preparedVideos = videos;
  try {
    preparedVideos = await applyChannelModerationToVideos(videos, app);
  } catch (error) {
    devLogger.warn(
      "[ChannelProfile] Failed to prepare channel videos for moderation",
      error,
    );
    preparedVideos = videos;
  }

  if (loadToken !== currentVideoLoadToken) {
    return false;
  }

  const moderationApplied =
    Array.isArray(preparedVideos) && preparedVideos !== videos;
  const renderableVideos = Array.isArray(preparedVideos) ? preparedVideos : videos;

  if (!renderableVideos.length) {
    if (allowEmptyMessage) {
      container.dataset.hasChannelVideos = "false";
      container.innerHTML = `<p class="text-muted-strong">No videos to display.</p>`;
      return true;
    }
    return false;
  }

  container.dataset.hasChannelVideos = "true";
  container.innerHTML = "";

  const fragment = document.createDocumentFragment();
  const allKnownEventsArray = Array.from(nostrClient.allEvents.values());
  const loadedThumbnails =
    app?.loadedThumbnails instanceof Map ? app.loadedThumbnails : null;
  const unsupportedBtihMessage =
    typeof app?.getUnsupportedBtihMessage === "function"
      ? app.getUnsupportedBtihMessage()
      : "This magnet link is missing a compatible BitTorrent v1 info hash.";

  const fallbackNormalizePubkey = (value) =>
    typeof value === "string" && value ? value.trim().toLowerCase() : "";
  const normalizePubkey =
    typeof app?.normalizeHexPubkey === "function"
      ? (value) =>
          app.normalizeHexPubkey(value) || fallbackNormalizePubkey(value)
      : fallbackNormalizePubkey;
  const normalizedViewerPubkey = normalizePubkey(app?.pubkey);
  let renderIndex = 0;

  const extractPlaybackDetail = (trigger, video) => {
    if (
      app?.videoListView &&
      typeof app.videoListView.extractPlaybackDetail === "function"
    ) {
      return app.videoListView.extractPlaybackDetail(trigger, video);
    }

    const element = trigger instanceof HTMLElement ? trigger : null;
    const target =
      element?.closest("[data-play-url],[data-play-magnet]") || element;

    const rawUrlValue =
      (target?.dataset && typeof target.dataset.playUrl === "string"
        ? target.dataset.playUrl
        : null) ??
      target?.getAttribute?.("data-play-url") ??
      "";
    const rawMagnetValue =
      (target?.dataset && typeof target.dataset.playMagnet === "string"
        ? target.dataset.playMagnet
        : null) ??
      target?.getAttribute?.("data-play-magnet") ??
      "";

    let url = "";
    if (rawUrlValue) {
      try {
        url = decodeURIComponent(rawUrlValue);
      } catch (error) {
        url = rawUrlValue;
      }
    }

    const magnet = typeof rawMagnetValue === "string" ? rawMagnetValue : "";
    const videoId =
      target?.dataset?.videoId ||
      target?.getAttribute?.("data-video-id") ||
      video?.id ||
      "";

    return { videoId, url, magnet, video };
  };

  const playbackHandler =
    typeof app?.videoListViewPlaybackHandler === "function"
      ? app.videoListViewPlaybackHandler.bind(app)
      : null;

  const startPlayback = (detail) => {
    if (playbackHandler) {
      playbackHandler(detail);
      return;
    }

    if (detail.videoId && typeof app?.playVideoByEventId === "function") {
      Promise.resolve(
        app.playVideoByEventId(detail.videoId, {
          url: detail.url,
          magnet: detail.magnet,
          title: detail.video?.title,
          description: detail.video?.description
        })
      ).catch((error) => {
        userLogger.error("Failed to play channel video via event id:", error);
        if (typeof app?.playVideoWithFallback === "function") {
          app.playVideoWithFallback({
            url: detail.url,
            magnet: detail.magnet
          });
        }
      });
      return;
    }

    if (typeof app?.playVideoWithFallback === "function") {
      Promise.resolve(
        app.playVideoWithFallback({ url: detail.url, magnet: detail.magnet })
      ).catch((error) => {
        userLogger.error(
          "Failed to start fallback playback for channel video:",
          error
        );
      });
    }
  };

  const allowNsfw = ALLOW_NSFW_CONTENT === true;

  for (const originalVideo of renderableVideos) {
    if (!originalVideo || !originalVideo.id || !originalVideo.title) {
      continue;
    }

    const video =
      moderationApplied
        ? originalVideo
        : decorateChannelVideo(originalVideo, app) || originalVideo;

    const normalizedVideoPubkey = normalizePubkey(video.pubkey);
    const canEdit =
      Boolean(normalizedVideoPubkey) &&
      Boolean(normalizedViewerPubkey) &&
      normalizedVideoPubkey === normalizedViewerPubkey;

    if (video.isPrivate && !canEdit) {
      continue;
    }

    if (!allowNsfw && video?.isNsfw === true && !canEdit) {
      continue;
    }

    app?.videosMap?.set(video.id, video);

    const index = renderIndex++;
    let hasOlder = false;
    if (canEdit && video.videoRootId) {
      hasOlder = app?.hasOlderVersion?.(video, allKnownEventsArray) || false;
    }

    const pointerInfo =
      typeof app?.deriveVideoPointerInfo === "function"
        ? app.deriveVideoPointerInfo(video)
        : null;
    if (
      pointerInfo &&
      typeof app?.persistWatchHistoryMetadataForVideo === "function"
    ) {
      app.persistWatchHistoryMetadataForVideo(video, pointerInfo);
    }

    const shareUrl =
      typeof app?.buildShareUrlFromEventId === "function"
        ? app.buildShareUrlFromEventId(video.id)
        : "#";
    const timeAgo =
      typeof app?.formatTimeAgo === "function"
        ? app.formatTimeAgo(video.created_at)
        : new Date(video.created_at * 1000).toLocaleString();

    let cardState = "";
    if (canEdit && video.isPrivate) {
      cardState = "private";
    }
    if (!allowNsfw && video?.isNsfw === true && canEdit) {
      cardState = "critical";
    }

    const identity = {
      name:
        typeof video.creatorName === "string" && video.creatorName
          ? video.creatorName
          : typeof video.authorName === "string"
            ? video.authorName
            : "",
      picture:
        typeof video.creatorPicture === "string" && video.creatorPicture
          ? video.creatorPicture
          : typeof video.authorPicture === "string"
            ? video.authorPicture
            : "",
      pubkey: typeof video.pubkey === "string" ? video.pubkey : "",
      npub:
        typeof video.npub === "string" && video.npub
          ? video.npub
          : typeof video.authorNpub === "string"
            ? video.authorNpub
            : "",
      shortNpub:
        typeof video.shortNpub === "string" && video.shortNpub
          ? video.shortNpub
          : typeof video.creatorNpub === "string"
            ? video.creatorNpub
            : "",
    };

    const videoCard = new VideoCard({
      document,
      video,
      index,
      shareUrl,
      pointerInfo,
      timeAgo,
      cardState,
      identity,
      capabilities: {
        canEdit,
        canDelete: canEdit,
        canRevert: hasOlder,
        canManageBlacklist:
          typeof app?.canCurrentUserManageBlacklist === "function"
            ? app.canCurrentUserManageBlacklist()
            : false
      },
      nsfwContext: {
        isNsfw: video?.isNsfw === true,
        allowNsfw,
        viewerIsOwner: canEdit
      },
      helpers: {
        escapeHtml: (value) => escapeHTML(value),
        isMagnetSupported: (magnet) => app?.isMagnetUriSupported?.(magnet),
        toLocaleString: (value) =>
          typeof value === "number" ? value.toLocaleString() : value
      },
      assets: {
        fallbackThumbnailSrc: "/assets/jpg/video-thumbnail-fallback.jpg",
        unsupportedBtihMessage
      },
      state: { loadedThumbnails },
      ensureGlobalMoreMenuHandlers: () => app?.ensureGlobalMoreMenuHandlers?.(),
      onRequestCloseAllMenus: () => app?.closeAllMoreMenus?.(),
      formatters: {
        formatTimeAgo: (ts) =>
          typeof app?.formatTimeAgo === "function"
            ? app.formatTimeAgo(ts)
            : new Date(ts * 1000).toLocaleString()
      }
    });

    channelVideoCardsById.set(video.id, videoCard);

    videoCard.onPlay = ({ event: domEvent, video: cardVideo }) => {
      const trigger = domEvent?.currentTarget || domEvent?.target;
      const detail = extractPlaybackDetail(trigger, cardVideo || video);
      detail.video = detail.video || video;
      startPlayback(detail);
    };

    videoCard.onModerationOverride = ({ video: overrideVideo, card: overrideCard }) =>
      typeof app?.handleModerationOverride === "function"
        ? app.handleModerationOverride({
            video: overrideVideo,
            card: overrideCard,
          })
        : false;

    videoCard.onModerationBlock = ({ video: blockVideo, card: blockCard }) =>
      typeof app?.handleModerationBlock === "function"
        ? app.handleModerationBlock({
            video: blockVideo,
            card: blockCard,
          })
        : false;

    videoCard.onModerationHide = ({ video: hideVideo, card: hideCard }) =>
      typeof app?.handleModerationHide === "function"
        ? app.handleModerationHide({
            video: hideVideo,
            card: hideCard,
          })
        : false;

    videoCard.onEdit = ({ video: editVideo, index: editIndex }) => {
      app?.handleEditVideo?.({
        eventId: editVideo?.id || "",
        index: Number.isFinite(editIndex) ? editIndex : null,
        video: editVideo || null
      });
    };

    videoCard.onRevert = ({ video: revertVideo, index: revertIndex }) => {
      app?.handleRevertVideo?.({
        eventId: revertVideo?.id || "",
        index: Number.isFinite(revertIndex) ? revertIndex : null,
        video: revertVideo || null
      });
    };

    videoCard.onDelete = ({ video: deleteVideo, index: deleteIndex }) => {
      app?.handleFullDeleteVideo?.({
        eventId: deleteVideo?.id || "",
        index: Number.isFinite(deleteIndex) ? deleteIndex : null,
        video: deleteVideo || null
      });
    };

    videoCard.onMoreAction = ({ dataset = {} }) => {
      const action = dataset.action || "";
      const detail = {
        ...dataset,
        eventId: dataset.eventId || video.id || "",
        context: dataset.context || "channel-grid"
      };
      app?.handleMoreMenuAction?.(action || "copy-link", detail);
    };

    videoCard.onAuthorNavigate = ({ pubkey }) => {
      const targetPubkey = pubkey || video.pubkey || "";
      if (targetPubkey && typeof app?.goToProfile === "function") {
        app.goToProfile(targetPubkey);
      }
    };

    videoCard.onRequestMoreMenu = (detail = {}) => {
      if (typeof app?.requestMoreMenu === "function") {
        app.requestMoreMenu({
          ...detail,
          video: detail.video || video,
          pointerInfo: detail.pointerInfo || pointerInfo,
        });
      }
    };

    videoCard.onCloseMoreMenu = (detail = {}) => {
      if (typeof app?.closeMoreMenu === "function") {
        return app.closeMoreMenu(detail);
      }
      return false;
    };

    videoCard.onRequestSettingsMenu = (detail = {}) => {
      if (typeof app?.requestVideoSettingsMenu === "function") {
        app.requestVideoSettingsMenu(detail);
      }
    };

    videoCard.onCloseSettingsMenu = (detail = {}) => {
      if (typeof app?.closeVideoSettingsMenu === "function") {
        return app.closeVideoSettingsMenu(detail);
      }
      return false;
    };

    const cardEl = videoCard.getRoot();
    if (cardEl) {
      fragment.appendChild(cardEl);
    }
  }

  if (renderIndex === 0) {
    if (allowEmptyMessage) {
      container.dataset.hasChannelVideos = "false";
      container.innerHTML = `<p class="text-muted-strong">No videos to display.</p>`;
      return true;
    }
    return false;
  }

  container.appendChild(fragment);

  attachHealthBadges(container);
  attachUrlHealthBadges(container, ({ badgeEl, url, eventId }) => {
    const video = app?.videosMap?.get(eventId) || { id: eventId };
    app?.handleUrlHealthBadge?.({ video, url, badgeEl });
  });

  app?.mountVideoListView?.();

  const lazyEls = container.querySelectorAll("[data-lazy]");
  lazyEls.forEach((el) => app?.mediaLoader?.observe?.(el));

  app?.attachMoreMenuHandlers?.(container);

  updateChannelModerationVisuals({ app });

  return true;
}

function applyChannelProfileMetadata({
  profile = {},
  event = null,
  pubkey = "",
  npub = "",
  loadToken = null
} = {}) {
  if (loadToken !== null && loadToken !== currentProfileLoadToken) {
    return;
  }

  const normalized = normalizeChannelProfileMetadata(profile);
  const hasExplicitProfilePayload =
    hasExplicitChannelProfilePayload(profile);
  const incomingEventTimestamp =
    typeof event?.created_at === "number" ? event.created_at : 0;
  const existingEventTimestamp =
    typeof currentChannelProfileEvent?.created_at === "number"
      ? currentChannelProfileEvent.created_at
      : 0;

  if (currentChannelProfileSnapshot) {
    const isOlderEvent =
      incomingEventTimestamp &&
      existingEventTimestamp &&
      incomingEventTimestamp < existingEventTimestamp;
    if (isOlderEvent) {
      return;
    }

    if (!hasExplicitProfilePayload) {
      if (currentChannelProfileHasExplicitPayload) {
        return;
      }

      const shouldIgnoreEmptyPayload =
        !incomingEventTimestamp ||
        incomingEventTimestamp <= existingEventTimestamp;
      if (shouldIgnoreEmptyPayload) {
        return;
      }
    }
  }

  const expectedLoadToken =
    loadToken !== null ? loadToken : currentProfileLoadToken;

  const bannerEl = document.getElementById("channelBanner");
  if (bannerEl) {
    const fallbackAttr =
      (typeof bannerEl.dataset?.fallbackSrc === "string"
        ? bannerEl.dataset.fallbackSrc.trim()
        : "") ||
      bannerEl.getAttribute("data-fallback-src") ||
      "";
    const fallbackSrc = fallbackAttr || FALLBACK_CHANNEL_BANNER;

    if (bannerEl.dataset.fallbackSrc !== fallbackSrc) {
      bannerEl.dataset.fallbackSrc = fallbackSrc;
    }
    if (!bannerEl.getAttribute("data-fallback-src") && fallbackSrc) {
      bannerEl.setAttribute("data-fallback-src", fallbackSrc);
    }

    ensureBannerFallbackHandler(bannerEl);

    if (!normalized.banner) {
      bannerLoadStates.delete(bannerEl);
      setBannerVisual(bannerEl, fallbackSrc, { referrerPolicy: null });
    } else {
      applyBannerWithPolicies({
        bannerEl,
        url: normalized.banner,
        fallbackSrc,
        loadToken: expectedLoadToken
      });
    }
  }

  const avatarEl = document.getElementById("channelAvatar");
  if (avatarEl) {
    avatarEl.src = normalized.picture || FALLBACK_CHANNEL_AVATAR;
  }

  const blurPubkey = pubkey || currentChannelHex || "";
  updateChannelModerationVisuals({
    bannerEl,
    avatarEl,
    pubkey: blurPubkey,
  });

  const nameEl = document.getElementById("channelName");
  if (nameEl) {
    nameEl.textContent = normalized.name || "Unknown User";
  }

  const channelNpubEl = document.getElementById("channelNpub");
  if (channelNpubEl) {
    if (npub) {
      channelNpubEl.textContent = formatShortNpub(npub);
    } else if (pubkey) {
      try {
        const encoded = window.NostrTools.nip19.npubEncode(pubkey);
        channelNpubEl.textContent = formatShortNpub(encoded);
      } catch (error) {
        channelNpubEl.textContent = "";
      }
    }
  }

  const aboutEl = document.getElementById("channelAbout");
  if (aboutEl) {
    aboutEl.textContent = normalized.about || "";
  }

  const websiteEl = document.getElementById("channelWebsite");
  if (websiteEl) {
    if (normalized.website) {
      websiteEl.href = normalized.website;
      websiteEl.textContent = normalized.website;
    } else {
      websiteEl.textContent = "";
      websiteEl.removeAttribute("href");
    }
  }

  const previousLightning = currentChannelLightningAddress;
  const lightningAddress = normalized.lightningAddress || "";
  currentChannelLightningAddress = lightningAddress;

  const lnEl = document.getElementById("channelLightning");
  if (lnEl) {
    lnEl.textContent = lightningAddress || "No lightning address found.";
  }

  if (event) {
    currentChannelProfileEvent = { ...event };
  } else if (loadToken === currentProfileLoadToken && !event) {
    currentChannelProfileEvent = null;
  }

  currentChannelProfileSnapshot = { ...normalized };
  currentChannelProfileHasExplicitPayload = hasExplicitProfilePayload;

  if (lightningAddress) {
    if (lightningAddress !== previousLightning) {
      fetchLightningMetadata(lightningAddress)
        .then(() => updateZapSplitSummary())
        .catch(() => {});
    }
  } else {
    updateZapSplitSummary();
  }

  setChannelZapVisibility(Boolean(lightningAddress));
}

async function fetchChannelProfileFromRelays(pubkey) {
  try {
    await nostrClient.ensurePool();
  } catch (error) {
    userLogger.error("Failed to initialize relay pool for channel profile:", error);
    return { event: null, profile: {} };
  }

  const pool = nostrClient?.pool;
  const relayCandidates = Array.isArray(nostrClient?.relays)
    ? nostrClient.relays.filter(
        (relayUrl) => typeof relayUrl === "string" && relayUrl.trim().length > 0
      )
    : [];
  const relayUrls = relayCandidates.length > 0 ? relayCandidates : DEFAULT_RELAY_URLS;

  if (!pool || !Array.isArray(relayUrls) || relayUrls.length === 0) {
    return { event: null, profile: {} };
  }

  try {
    const events = await pool.list(relayUrls, [
      { kinds: [0], authors: [pubkey], limit: 1 }
    ]);

    let newestEvent = null;
    for (const event of Array.isArray(events) ? events : []) {
      if (!event || !event.content) {
        continue;
      }
      if (!newestEvent || event.created_at > newestEvent.created_at) {
        newestEvent = event;
      }
    }

    if (newestEvent?.content) {
      try {
        const meta = JSON.parse(newestEvent.content);
        return { event: newestEvent, profile: meta };
      } catch (error) {
        userLogger.warn("Failed to parse channel metadata payload:", error);
        return { event: newestEvent, profile: {} };
      }
    }

    return { event: newestEvent, profile: {} };
  } catch (error) {
    throw error;
  }
}

/**
 * Fetches and displays the user's metadata (kind=0).
 */
async function loadUserProfile(pubkey) {
  const app = getApp();
  const loadToken = ++currentProfileLoadToken;

  setChannelZapVisibility(false);

  const cachedEntry = getCachedChannelProfile(pubkey);
  if (cachedEntry) {
    applyChannelProfileMetadata({
      profile: cachedEntry.profile,
      event: cachedEntry.event,
      pubkey,
      npub: currentChannelNpub,
      loadToken
    });
  } else {
    const stateEntry =
      typeof app?.getProfileCacheEntry === "function"
        ? app.getProfileCacheEntry(pubkey)
        : null;
    if (stateEntry?.profile) {
      applyChannelProfileMetadata({
        profile: stateEntry.profile,
        event: null,
        pubkey,
        npub: currentChannelNpub,
        loadToken
      });
    } else {
      applyChannelProfileMetadata({
        profile: {},
        event: null,
        pubkey,
        npub: currentChannelNpub,
        loadToken
      });
    }
  }

  try {
    const result = await fetchChannelProfileFromRelays(pubkey);
    if (loadToken !== currentProfileLoadToken) {
      return;
    }

    const cachedUpdated = rememberChannelProfile(pubkey, result);

    if (cachedUpdated && typeof app?.setProfileCacheEntry === "function") {
      try {
        const profileForCache =
          result && typeof result.profile === "object" && result.profile
            ? { ...result.profile }
            : {};

        if (!profileForCache.lightningAddress) {
          const lightningFallback =
            result.profile?.lightningAddress ||
            result.profile?.lud16 ||
            result.profile?.lud06 ||
            "";
          if (lightningFallback) {
            profileForCache.lightningAddress = lightningFallback;
          }
        }

        app.setProfileCacheEntry(pubkey, profileForCache);
      } catch (error) {
        userLogger.warn(
          "Failed to persist channel profile metadata to cache:",
          error
        );
      }
    }

    applyChannelProfileMetadata({
      profile: result.profile,
      event: result.event,
      pubkey,
      npub: currentChannelNpub,
      loadToken
    });
  } catch (error) {
    if (loadToken === currentProfileLoadToken) {
      userLogger.error("Failed to fetch user profile data:", error);
      const lnEl = document.getElementById("channelLightning");
      if (lnEl && !currentChannelLightningAddress) {
        lnEl.textContent = "No lightning address found.";
      }
      if (!currentChannelLightningAddress) {
        updateZapSplitSummary();
        setChannelZapVisibility(false);
      }
    }
  }
}

/**
 * Fetches and displays this user's videos (kind=30078).
 * Filters out older overshadowed notes, blacklisted, etc.
 */
export function refreshActiveChannelVideoGrid({ reason } = {}) {
  if (typeof window === "undefined") {
    return Promise.resolve();
  }

  const hashParams = new URLSearchParams(window.location.hash.slice(1));
  if (hashParams.get("view") !== "channel-profile") {
    return Promise.resolve();
  }

  if (!currentChannelHex) {
    return Promise.resolve();
  }

  const activeNpub = hashParams.get("npub");
  if (currentChannelNpub && activeNpub && activeNpub !== currentChannelNpub) {
    return Promise.resolve();
  }

  try {
    const result = loadUserVideos(currentChannelHex);
    return result instanceof Promise ? result : Promise.resolve(result);
  } catch (error) {
    userLogger.warn(
      reason
        ? `Failed to trigger channel refresh after ${reason}:`
        : "Failed to trigger channel refresh:",
      error,
    );
    return Promise.resolve();
  }
}

async function loadUserVideos(pubkey) {
  const app = getApp();
  const container = document.getElementById("channelVideoList");
  const loadToken = ++currentVideoLoadToken;
  const hadExistingContent =
    !!container && container.querySelector("[data-video-id]");
  let hasVisibleContent = Boolean(hadExistingContent);

  if (container) {
    container.dataset.loading = "true";
    if (!hadExistingContent) {
      container.innerHTML = `
        <div class="py-16 flex justify-center">
        <span class="text-muted animate-pulse">Loading videos…</span>
        </div>
      `;
    }
  }

  let renderedFromCache = false;
  if (container) {
    const cachedEvents = getCachedChannelVideoEvents(pubkey);
    if (cachedEvents.length) {
      const cachedVideos = buildRenderableChannelVideos({
        events: cachedEvents,
        app
      });
      if (cachedVideos.length) {
        const rendered = await renderChannelVideosFromList({
          videos: cachedVideos,
          container,
          app,
          loadToken,
          allowEmptyMessage: false
        });
        if (rendered) {
          hasVisibleContent = true;
        }
        renderedFromCache = rendered || renderedFromCache;
      }
    }
  }

  const ensureAccessPromise = accessControl.ensureReady().catch((error) => {
    userLogger.warn(
      "Failed to ensure admin lists were loaded before channel fetch:",
      error
    );
  });

  try {
    // 1) Build filter for videos from this pubkey
    const filter = {
      kinds: [30078],
      authors: [pubkey],
      "#t": ["video"],
      limit: 200
    };

    // 2) Collect raw events from all relays
    const events = [];
    const knownRelays = Array.isArray(nostrClient.relays)
      ? nostrClient.relays
      : Array.from(nostrClient.relays || []);
    const relayList = knownRelays.filter((url) => isValidRelayUrl(url));

    if (relayList.length === 0) {
      try {
        const fallbackEvents = await nostrClient.pool.list(
          Array.from(DEFAULT_RELAY_URLS),
          [filter]
        );
        if (Array.isArray(fallbackEvents)) {
          events.push(...fallbackEvents);
        }
      } catch (error) {
        userLogger.error("Relay error (default pool):", error);
      }
    } else {
      const relayPromises = relayList.map((url) =>
        nostrClient.pool.list([url], [filter])
      );

      const settled = await Promise.allSettled(relayPromises);
      settled.forEach((result, index) => {
        const relayUrl = relayList[index];

        if (result.status === "fulfilled") {
          const relayEvents = Array.isArray(result.value) ? result.value : [];
          events.push(...relayEvents);
          return;
        }

        if (result.reason) {
          userLogger.error(`Relay error (${relayUrl}):`, result.reason);
        }
      });
    }

    await ensureAccessPromise;

    if (loadToken !== currentVideoLoadToken) {
      return;
    }

    if (!container) {
      userLogger.warn("channelVideoList element not found in DOM.");
      return;
    }

    const videos = buildRenderableChannelVideos({ events, app });
    const rendered = await renderChannelVideosFromList({
      videos,
      container,
      app,
      loadToken,
      allowEmptyMessage: !hasVisibleContent
    });

    if (rendered) {
      hasVisibleContent = true;
    }

    renderedFromCache = rendered || renderedFromCache;
  } catch (err) {
    if (
      loadToken === currentVideoLoadToken &&
      container &&
      !renderedFromCache &&
      !hasVisibleContent
    ) {
      container.dataset.hasChannelVideos = "false";
      container.innerHTML = `
        <p class="text-critical">Failed to load videos. Please try again.</p>
      `;
    }
    userLogger.error("Error loading user videos:", err);
  } finally {
    await ensureAccessPromise;
    if (loadToken === currentVideoLoadToken && container) {
      delete container.dataset.loading;
    }
  }
}

if (typeof window !== "undefined" && typeof window.addEventListener === "function") {
  window.addEventListener("bitvid:access-control-updated", () => {
    const hashParams = new URLSearchParams(window.location.hash.slice(1));
    if (hashParams.get("view") !== "channel-profile") {
      return;
    }

    if (!currentChannelHex) {
      return;
    }

    const activeNpub = hashParams.get("npub");
    if (currentChannelNpub && activeNpub && activeNpub !== currentChannelNpub) {
      return;
    }

    loadUserVideos(currentChannelHex).catch((error) => {
      userLogger.error(
        "Failed to refresh channel videos after admin update:",
        error
      );
    });
  });

  window.addEventListener("bitvid:auth-changed", (event) => {
    const hashParams = new URLSearchParams(window.location.hash.slice(1));
    if (hashParams.get("view") !== "channel-profile") {
      return;
    }

  if (!currentChannelHex) {
    return;
  }

  const activeNpub = hashParams.get("npub");
  if (currentChannelNpub && activeNpub && activeNpub !== currentChannelNpub) {
    return;
  }

  setChannelZapVisibility(Boolean(currentChannelLightningAddress));
  syncChannelShareButtonState();

  const detail = event?.detail;
  if (!detail || typeof detail !== "object") {
    return;
  }

  if (detail.status === "logout") {
    zapInFlight = false;
    zapPopoverOpenPromise = null;
    zapShouldFocusOnOpen = false;
    resetZapRetryState();
    setZapStatus("", "neutral");
    clearZapReceipts();
    channelZapPendingOpen = false;
    const amountInput = getZapAmountInput();
    if (amountInput) {
      amountInput.value = "";
    }
    return;
  }

    if (detail.status === "login") {
      zapInFlight = false;
      resetZapRetryState();
      setZapStatus("", "neutral");
      if (channelZapPendingOpen) {
        channelZapPendingOpen = false;
        const zapButton = getChannelZapButton();
        const requiresLogin =
          zapButton?.dataset?.requiresLogin === "true" ||
          zapButton?.hasAttribute("hidden");
        if (zapButton && !requiresLogin) {
          const opened = openZapControls({ focus: true });
          if (!opened) {
            setupZapButton({ force: true });
            openZapControls({ focus: true });
          }
        }
      }
      return;
    }
  });
}

/**
 * Keep only the newest version of each video root.
 */
function dedupeToNewestByRoot(videos) {
  const map = new Map();
  for (const vid of videos) {
    const rootId = vid.videoRootId || vid.id;
    const existing = map.get(rootId);
    if (!existing || vid.created_at > existing.created_at) {
      map.set(rootId, vid);
    }
  }
  return Array.from(map.values());
}