bitvid/tests/watch-history.test.mjs

import "./test-helpers/setup-localstorage.mjs";
import assert from "node:assert/strict";

const {
  WATCH_HISTORY_LIST_IDENTIFIER,
  WATCH_HISTORY_KIND,
  WATCH_HISTORY_FETCH_EVENT_LIMIT,
} = await import("../js/config.js");
const {
  NOTE_TYPES,
  getNostrEventSchema,
  setNostrEventSchemaOverrides,
  buildWatchHistoryIndexEvent,
  buildWatchHistoryChunkEvent,
} = await import("../js/nostrEventSchemas.js");
const { compareByWatchedAtDesc, getWatchedAtScore } = await import(
  "../js/watchHistorySort.js"
);

if (typeof globalThis.window === "undefined") {
  globalThis.window = {};
}

if (!globalThis.window.NostrTools) {
  globalThis.window.NostrTools = {};
}

globalThis.window.NostrTools.getEventHash = (event) => {
  const payload = `${event.kind}:${event.pubkey}:${event.created_at}`;
  return `hash-${Buffer.from(payload).toString("hex")}`;
};

globalThis.window.NostrTools.signEvent = (event, privateKey) =>
  `sig-${privateKey.slice(0, 8)}-${event.created_at}`;

delete globalThis.window.NostrTools.nip04;
delete globalThis.window.nostr;

const { nostrClient } = await import("../js/nostr.js");

function createPublishingClient(actorPubkey, options = {}) {
  const client = new nostrClient.constructor();
  const publishedEvents = [];
  const payloads = [];
  const scheduledRepublishes = [];
  const cancelledRepublishes = [];
  const persistedEntries = [];
  const onPublish =
    typeof options.onPublish === "function" ? options.onPublish : null;

  client.pool = {
    publish(urls, event) {
      publishedEvents.push(event);
      const publishDecision = onPublish ? onPublish(event) : null;
      const shouldSucceed = publishDecision?.ok !== false;
      return {
        on(eventName, handler) {
          setTimeout(() => {
            if (shouldSucceed) {
              if (eventName === "ok" || eventName === "seen") {
                handler();
              }
            } else if (eventName === "failed") {
              const providedError = publishDecision?.error;
              const error =
                providedError instanceof Error
                  ? providedError
                  : new Error(
                      providedError
                        ? String(providedError)
                        : "mock publish failure"
                    );
              handler(error);
            }
          }, 0);
        },
      };
    },
    list: async () => [],
  };
  client.relays = ["wss://unit.test"];
  client.pubkey = "";
  client.sessionActor = { pubkey: actorPubkey, privateKey: "unit-secret" };
  client.ensureSessionActor = async () => actorPubkey;
  client.encryptWatchHistoryPayload = async (_actor, payload) => {
    payloads.push(payload);
    return { ok: true, ciphertext: JSON.stringify(payload) };
  };
  client.persistWatchHistoryEntry = (_actor, entry) => {
    persistedEntries.push(entry);
  };
  client.cancelWatchHistoryRepublish = (actor) => {
    cancelledRepublishes.push(actor);
  };
  client.scheduleWatchHistoryRepublish = (actor, items) => {
    scheduledRepublishes.push({ actor, items });
  };
  return {
    client,
    publishedEvents,
    payloads,
    scheduledRepublishes,
    cancelledRepublishes,
    persistedEntries,
  };
}

function createDecryptClient(actorPubkey) {
  const client = new nostrClient.constructor();
  client.sessionActor = { pubkey: actorPubkey, privateKey: "unit-secret" };
  client.ensureSessionActor = async () => actorPubkey;
  return client;
}

const ACTOR = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
const LEGACY_WATCH_HISTORY_KIND = 30078;
function deriveChunkPrefix(identifier) {
  if (typeof identifier !== "string") {
    return "watch-history:v2";
  }

  const trimmed = identifier.trim().replace(/\/+$/, "");
  if (!trimmed) {
    return "watch-history:v2";
  }

  if (/[:/]index$/i.test(trimmed)) {
    const base = trimmed.replace(/[:/]index$/i, "").replace(/\/+$/, "");
    return base || "watch-history:v2";
  }

  if (/:v\d+$/i.test(trimmed)) {
    return trimmed;
  }

  return `${trimmed}:v2`;
}

const WATCH_HISTORY_CHUNK_PREFIX = deriveChunkPrefix(
  WATCH_HISTORY_LIST_IDENTIFIER
);

const indexSchema = getNostrEventSchema(NOTE_TYPES.WATCH_HISTORY_INDEX);
assert(indexSchema, "index schema should be available");

const chunkSchema = getNostrEventSchema(NOTE_TYPES.WATCH_HISTORY_CHUNK);
assert(chunkSchema, "chunk schema should be available");

const sampleChunkIdentifier = `${WATCH_HISTORY_CHUNK_PREFIX}/sample/0`;
const sampleChunkAddresses = [
  `${WATCH_HISTORY_KIND}:${ACTOR}:${sampleChunkIdentifier}`,
  `${WATCH_HISTORY_KIND}:${ACTOR}:${WATCH_HISTORY_CHUNK_PREFIX}/sample/1`,
];

const sampleIndexEvent = buildWatchHistoryIndexEvent({
  pubkey: ACTOR,
  created_at: 111,
  snapshotId: "sample",
  totalChunks: 2,
  chunkAddresses: sampleChunkAddresses,
});

const sampleIndexIdentifierTag = sampleIndexEvent.tags.find(
  (tag) => Array.isArray(tag) && tag[0] === "d"
);
assert(sampleIndexIdentifierTag, "index event should include identifier tag");
assert.equal(
  sampleIndexIdentifierTag[1],
  WATCH_HISTORY_LIST_IDENTIFIER,
  "index event should use canonical watch history identifier"
);

const sampleChunksTag = sampleIndexEvent.tags.find(
  (tag) => Array.isArray(tag) && tag[0] === "chunks"
);
assert(sampleChunksTag, "index event should include chunks tag");
assert.equal(
  Number.parseInt(sampleChunksTag[1], 10),
  2,
  "chunks tag should reflect total chunks"
);

const sampleIndexAddresses = sampleIndexEvent.tags
  .filter((tag) => Array.isArray(tag) && tag[0] === "a")
  .map((tag) => tag[1]);
assert.deepEqual(
  sampleIndexAddresses,
  sampleChunkAddresses,
  "index event should list chunk addresses"
);

const sampleChunkEvent = buildWatchHistoryChunkEvent({
  pubkey: ACTOR,
  created_at: 222,
  chunkIdentifier: sampleChunkIdentifier,
  snapshotId: "sample",
  chunkIndex: 0,
  totalChunks: 2,
  pointerTags: [["e", "sample-event"]],
  content: "ciphertext",
});

const chunkIdentifierTag = sampleChunkEvent.tags.find(
  (tag) => Array.isArray(tag) && tag[0] === "d"
);
assert(chunkIdentifierTag, "chunk event should include identifier tag");
assert.equal(
  chunkIdentifierTag[1],
  sampleChunkIdentifier,
  "chunk event should use provided identifier"
);
assert(
  sampleChunkEvent.tags.some((tag) => Array.isArray(tag) && tag[0] === "snapshot"),
  "chunk event should include snapshot tag"
);
assert(
  sampleChunkEvent.tags.some((tag) => Array.isArray(tag) && tag[0] === "chunk"),
  "chunk event should include chunk tag"
);
assert(
  sampleChunkEvent.tags.some((tag) => Array.isArray(tag) && tag[0] === "encrypted"),
  "chunk event should include encrypted tag"
);

setNostrEventSchemaOverrides({
  [NOTE_TYPES.WATCH_HISTORY_INDEX]: {
    identifierTag: { name: "d", value: "custom:index" },
  },
  [NOTE_TYPES.WATCH_HISTORY_CHUNK]: {
    identifierTag: { name: "d", value: "custom:chunk" },
  },
});

const overriddenIndexEvent = buildWatchHistoryIndexEvent({
  pubkey: ACTOR,
  created_at: 333,
  snapshotId: "override",
  totalChunks: 1,
});
assert(
  overriddenIndexEvent.tags.some(
    (tag) => Array.isArray(tag) && tag[0] === "d" && tag[1] === "custom:index"
  ),
  "index builder should honor overrides"
);

const overriddenChunkEvent = buildWatchHistoryChunkEvent({
  pubkey: ACTOR,
  created_at: 444,
  snapshotId: "override",
  chunkIndex: 0,
  totalChunks: 1,
  pointerTags: [],
  content: "cipher",
});
assert(
  overriddenChunkEvent.tags.some(
    (tag) => Array.isArray(tag) && tag[0] === "d" && tag[1] === "custom:chunk"
  ),
  "chunk builder should honor identifier override"
);

setNostrEventSchemaOverrides({});

const { client: publishingClient, publishedEvents, payloads } =
  createPublishingClient(ACTOR);

publishingClient.watchHistoryPayloadMaxBytes = 400;
publishingClient.watchHistoryFetchEventLimit = WATCH_HISTORY_FETCH_EVENT_LIMIT;

const baseWatchedAt = 1_700_000_000_000;
const longPointers = Array.from({ length: 8 }, (_, index) => {
  const relay = index % 3 === 0 ? "wss://relay.unit" : null;
  const watchedAt = baseWatchedAt + index * 60_000;
  if (index % 2 === 0) {
    return {
      type: "e",
      value: `event-${index}-${"x".repeat(90)}`,
      relay,
      watchedAt,
    };
  }
  return {
    type: "a",
    value: `${WATCH_HISTORY_KIND}:${ACTOR}:history-${index}-${"y".repeat(60)}`,
    relay,
    watchedAt,
  };
});

const publishResult = await publishingClient.publishWatchHistorySnapshot(
  ACTOR,
  longPointers
);

assert.equal(publishResult.ok, true, "publish should report success");
assert(publishResult.events.length > 1, "snapshot should include index and chunk events");
assert.equal(
  publishResult.events.length,
  payloads.length + 1,
  "index event should accompany each chunk payload"
);

payloads.forEach((payload) => {
  const size = JSON.stringify(payload).length;
  assert(
    size <= publishingClient.watchHistoryPayloadMaxBytes,
    `payload size ${size} should respect cap`
  );
  assert.equal(payload.version, 2, "chunk payload should use version 2");
});

const snapshotIds = new Set(
  publishResult.events.map((event) =>
    event.tags.find((tag) => Array.isArray(tag) && tag[0] === "snapshot")?.[1]
  )
);
assert.equal(snapshotIds.size, 1, "all events should share a snapshot id");

const indexEvent = publishResult.indexEvent;
assert(indexEvent, "publish result should include index event");

const indexIdentifierTag = indexEvent.tags.find(
  (tag) => Array.isArray(tag) && tag[0] === "d"
);
assert(indexIdentifierTag, "index event should include identifier tag");
assert.equal(
  indexIdentifierTag[1],
  WATCH_HISTORY_LIST_IDENTIFIER,
  "index event should use canonical identifier"
);

const indexChunksTag = indexEvent.tags.find(
  (tag) => Array.isArray(tag) && tag[0] === "chunks"
);
assert(indexChunksTag, "index event should include chunks tag");
assert.equal(
  Number.parseInt(indexChunksTag[1], 10),
  publishResult.chunks.length,
  "index event should report chunk count"
);

const chunkEvents = publishResult.chunks.map((chunk) => chunk.event);
const chunkIdentifiers = chunkEvents.map((event) =>
  event.tags.find((tag) => Array.isArray(tag) && tag[0] === "d")?.[1]
);

assert.equal(
  chunkIdentifiers.length,
  chunkEvents.length,
  "each chunk should expose a d tag"
);

const uniqueChunkIdentifiers = new Set(chunkIdentifiers);
assert.equal(
  uniqueChunkIdentifiers.size,
  chunkEvents.length,
  "each chunk should have a unique d tag"
);

chunkIdentifiers.forEach((identifier, index) => {
  assert(identifier, `chunk ${index} should include identifier`);
  assert(
    identifier.startsWith(WATCH_HISTORY_CHUNK_PREFIX),
    `chunk ${index} should use the chunk prefix`
  );
  assert.notEqual(
    identifier,
    WATCH_HISTORY_LIST_IDENTIFIER,
    "chunk identifiers should differ from index identifier"
  );
});

const indexAddresses = indexEvent.tags
  .filter((tag) => Array.isArray(tag) && tag[0] === "a")
  .map((tag) => tag[1]);

const expectedChunkAddresses = chunkEvents.map((event) => {
  const identifier = event.tags.find(
    (tag) => Array.isArray(tag) && tag[0] === "d"
  )?.[1];
  assert(identifier, "chunk should include identifier tag");
  return `${WATCH_HISTORY_KIND}:${ACTOR}:${identifier}`;
});

expectedChunkAddresses.forEach((address) => {
  assert(
    indexAddresses.includes(address),
    `index event should reference ${address}`
  );
});

const CHUNK_FAILURE_ACTOR = `${ACTOR}-chunk-failure`;
const {
  client: chunkFailureClient,
  publishedEvents: chunkFailureEvents,
  payloads: chunkFailurePayloads,
  scheduledRepublishes: chunkFailureRepublishes,
  cancelledRepublishes: chunkFailureCancels,
} = createPublishingClient(CHUNK_FAILURE_ACTOR, {
  onPublish(event) {
    const chunkTag = event.tags.find(
      (tag) => Array.isArray(tag) && tag[0] === "chunk"
    );
    if (chunkTag) {
      const chunkIndex = Number.parseInt(chunkTag[1], 10);
      const total = Number.parseInt(chunkTag[2], 10);
      if (
        Number.isInteger(chunkIndex) &&
        Number.isInteger(total) &&
        (total > 1 ? chunkIndex === total - 1 : chunkIndex === 0)
      ) {
        return { ok: false, error: new Error("chunk publish failed") };
      }
    }
    return { ok: true };
  },
});

chunkFailureClient.watchHistoryPayloadMaxBytes =
  publishingClient.watchHistoryPayloadMaxBytes;
chunkFailureClient.watchHistoryFetchEventLimit = WATCH_HISTORY_FETCH_EVENT_LIMIT;

const chunkFailureResult = await chunkFailureClient.publishWatchHistorySnapshot(
  CHUNK_FAILURE_ACTOR,
  longPointers
);

assert.equal(
  chunkFailureResult.ok,
  false,
  "chunk failure should report overall failure"
);
assert.equal(
  chunkFailureResult.indexEvent,
  null,
  "chunk failure should omit index event"
);
assert.equal(
  chunkFailureResult.events.length,
  chunkFailureResult.chunks.length,
  "chunk failure should not include index event in combined events"
);
assert.equal(
  chunkFailureResult.indexResults.length,
  0,
  "chunk failure should skip index publish attempts"
);
assert(
  chunkFailureResult.chunks.some((chunk) => chunk.success === false),
  "chunk failure results should flag the failed chunk"
);
assert.equal(
  chunkFailureRepublishes.length,
  1,
  "chunk failure should schedule a retry"
);
assert.equal(
  chunkFailureCancels.length,
  0,
  "chunk failure should not cancel retries"
);
assert.equal(
  chunkFailureRepublishes[0].actor,
  CHUNK_FAILURE_ACTOR,
  "chunk failure retry should target the affected actor"
);
assert(
  chunkFailureEvents.every((event) =>
    event.tags.some((tag) => Array.isArray(tag) && tag[0] === "chunk")
  ),
  "chunk failure should avoid publishing index events"
);
assert.equal(
  chunkFailurePayloads.length,
  chunkFailureResult.chunks.length,
  "chunk failure should still prepare payloads for each chunk"
);

const chunkFailureCache = chunkFailureClient.watchHistoryCache.get(
  CHUNK_FAILURE_ACTOR
);

assert(chunkFailureCache, "chunk failure should cache a watch history entry");
assert.equal(
  chunkFailureCache.chunkPointers.index,
  null,
  "chunk failure cache should not retain an index pointer"
);
assert(
  Array.from(chunkFailureCache.chunkEvents.values()).every((event) =>
    event.tags.some((tag) => Array.isArray(tag) && tag[0] === "chunk")
  ),
  "chunk failure cache should only persist chunk events"
);
assert.deepEqual(
  chunkFailureRepublishes[0].items.map((item) => ({
    type: item.type,
    value: item.value,
    relay: item.relay || null,
    watchedAt: item.watchedAt,
  })),
  chunkFailureResult.items.map((item) => ({
    type: item.type,
    value: item.value,
    relay: item.relay || null,
    watchedAt: item.watchedAt,
  })),
  "republish scheduler should receive the remaining items"
);

const LOGGED_ACTOR = `${ACTOR}-logged`;
const {
  client: noSignerClient,
  publishedEvents: noSignerPublishedEvents,
  scheduledRepublishes: noSignerRepublishes,
  persistedEntries: noSignerPersistedEntries,
} = createPublishingClient(LOGGED_ACTOR);

noSignerClient.pubkey = LOGGED_ACTOR;

const noSignerItems = [
  {
    type: "e",
    value: `${LOGGED_ACTOR}-event`,
    watchedAt: baseWatchedAt + 123,
  },
  {
    type: "a",
    value: `${WATCH_HISTORY_KIND}:${LOGGED_ACTOR}:history`,
    watchedAt: baseWatchedAt + 456,
  },
];

const noSignerResult = await noSignerClient.publishWatchHistorySnapshot(
  LOGGED_ACTOR,
  noSignerItems
);

assert.equal(
  noSignerResult.ok,
  false,
  "logged actor without signer should report failure"
);
assert.equal(
  noSignerResult.error,
  "signing-unavailable",
  "missing signer failure should flag availability"
);
assert.equal(
  noSignerPublishedEvents.length,
  0,
  "no events should publish when signer unavailable"
);
assert.equal(
  noSignerRepublishes.length,
  1,
  "missing signer should schedule a retry"
);
assert.equal(
  noSignerRepublishes[0].actor,
  LOGGED_ACTOR,
  "retry should target the logged actor"
);

const cachedLoggedEntry = noSignerClient.watchHistoryCache.get(LOGGED_ACTOR);
assert(cachedLoggedEntry, "missing signer should keep snapshot cached");
assert.equal(
  cachedLoggedEntry.items.length,
  noSignerItems.length,
  "cached entry should retain merged items"
);
assert.equal(
  noSignerPersistedEntries.length,
  1,
  "missing signer should persist cached payload"
);
assert.deepEqual(
  cachedLoggedEntry.items.map((item) => ({
    type: item.type,
    value: item.value,
  })),
  noSignerResult.items.map((item) => ({
    type: item.type,
    value: item.value,
  })),
  "returned items should mirror cached payload"
);

const scheduledLoggedKeys = new Set(
  noSignerRepublishes[0].items.map((item) => `${item.type}:${item.value}`)
);
const cachedLoggedKeys = new Set(
  cachedLoggedEntry.items.map((item) => `${item.type}:${item.value}`)
);
assert.deepEqual(
  scheduledLoggedKeys,
  cachedLoggedKeys,
  "scheduled retry should include cached items"
);

const NO_SEEN_ACTOR = `${ACTOR}-no-seen`;
const {
  client: noSeenClient,
  publishedEvents: noSeenPublishedEvents,
} = createPublishingClient(NO_SEEN_ACTOR);

noSeenClient.pool.publish = (_urls, event) => {
  noSeenPublishedEvents.push(event);
  return {
    on(eventName, handler) {
      if (eventName === "seen") {
        throw new TypeError("seen unsupported");
      }
      if (eventName === "ok") {
        setTimeout(handler, 0);
      } else if (eventName === "failed") {
        // Never invoke failed handlers in this mock; they should remain idle.
      }
    },
  };
};

const noSeenResult = await noSeenClient.publishWatchHistorySnapshot(
  NO_SEEN_ACTOR,
  [{ type: "e", value: "no-seen-pointer", relay: null }]
);

assert.equal(
  noSeenResult.ok,
  true,
  "publish should succeed when relay handle rejects seen handlers"
);
assert(
  noSeenResult.events.length > 0,
  "publish should still return the emitted events when seen is unsupported"
);

delete globalThis.window.nostr;

if (!globalThis.window.NostrTools.nip04) {
  globalThis.window.NostrTools.nip04 = {};
}

globalThis.window.NostrTools.nip04.decrypt = async (
  _priv,
  _pub,
  ciphertext
) => ciphertext;

const decryptClient = createDecryptClient(ACTOR);
decryptClient.relays = ["wss://unit.test"];
decryptClient.watchHistoryFetchEventLimit = WATCH_HISTORY_FETCH_EVENT_LIMIT;
decryptClient.pool = {
  list: async () => publishedEvents,
};

const fetched = await decryptClient.fetchWatchHistory(ACTOR);

assert.equal(
  fetched.items.length,
  longPointers.length,
  "fetch should reassemble all chunked items"
);

assert.deepEqual(
  fetched.items.map((item) => ({
    type: item.type,
    value: item.value,
    relay: item.relay || null,
    watchedAt: item.watchedAt,
  })),
  longPointers.map((item) => ({
    type: item.type,
    value: item.value,
    relay: item.relay || null,
    watchedAt: item.watchedAt,
  })),
  "chunked fetch should preserve pointer order and timestamps"
);

if (typeof localStorage !== "undefined") {
  localStorage.clear();
}

const headEvent = publishResult.event;

const legacyPointerIdentifiers = new Set();
const legacyIndexEvent = JSON.parse(JSON.stringify(headEvent));
legacyIndexEvent.kind = LEGACY_WATCH_HISTORY_KIND;
legacyIndexEvent.tags = legacyIndexEvent.tags.map((tag) => {
  if (
    Array.isArray(tag) &&
    tag[0] === "a" &&
    typeof tag[1] === "string" &&
    !legacyPointerIdentifiers.size
  ) {
    const [kindStr, pubkey, ...identifierParts] = tag[1].split(":");
    if (kindStr === String(WATCH_HISTORY_KIND) && identifierParts.length) {
      const identifier = identifierParts.join(":");
      legacyPointerIdentifiers.add(identifier);
      const legacyAddress = `${LEGACY_WATCH_HISTORY_KIND}:${pubkey}:${identifier}`;
      const clone = tag.slice();
      clone[1] = legacyAddress;
      return clone;
    }
  }
  return tag;
});
const legacyChunkIdentifier = legacyPointerIdentifiers.size
  ? Array.from(legacyPointerIdentifiers)[0]
  : null;

const snapshotId = headEvent.tags.find(
  (tag) => Array.isArray(tag) && tag[0] === "snapshot"
)?.[1];

const freshClient = createDecryptClient(ACTOR);
freshClient.relays = ["wss://unit.test"];
freshClient.watchHistoryFetchEventLimit = WATCH_HISTORY_FETCH_EVENT_LIMIT;

const observedFilters = [];
freshClient.pool = {
  list: async (_relays, filters) => {
    observedFilters.push(filters);

    const firstFilter = filters[0] || {};
    const dFilter = Array.isArray(firstFilter["#d"])
      ? firstFilter["#d"]
      : [];

    if (filters.length === 1 && dFilter.includes(WATCH_HISTORY_LIST_IDENTIFIER)) {
      return [legacyIndexEvent];
    }

    const requestedIdentifiers = new Set();
    const requestedSnapshots = new Set();

    for (const filter of filters) {
      if (Array.isArray(filter?.["#d"])) {
        for (const identifier of filter["#d"]) {
          requestedIdentifiers.add(identifier);
        }
      }
      if (Array.isArray(filter?.["#snapshot"])) {
        for (const value of filter["#snapshot"]) {
          requestedSnapshots.add(value);
        }
      }
    }

    const responses = [];

    for (const event of publishResult.events) {
      if (event.id === headEvent.id) {
        continue;
      }
      const cloned = JSON.parse(JSON.stringify(event));
      if (legacyChunkIdentifier) {
        const identifierTag = cloned.tags.find(
          (tag) => Array.isArray(tag) && tag[0] === "d"
        );
        if (identifierTag?.[1] === legacyChunkIdentifier) {
          cloned.kind = LEGACY_WATCH_HISTORY_KIND;
        }
      }
      const identifier = event.tags.find(
        (tag) => Array.isArray(tag) && tag[0] === "d"
      )?.[1];
      const eventSnapshot = event.tags.find(
        (tag) => Array.isArray(tag) && tag[0] === "snapshot"
      )?.[1];

      if (identifier && requestedIdentifiers.has(identifier)) {
        responses.push(cloned);
        continue;
      }
      if (eventSnapshot && requestedSnapshots.has(eventSnapshot)) {
        responses.push(cloned);
      }
    }

    return responses;
  },
};

const rebuilt = await freshClient.fetchWatchHistory(ACTOR);

assert.equal(
  rebuilt.items.length,
  longPointers.length,
  "fresh client should rebuild full watch history list"
);

assert.deepEqual(
  rebuilt.items.map((item) => ({
    type: item.type,
    value: item.value,
    relay: item.relay || null,
    watchedAt: item.watchedAt,
  })),
  longPointers.map((item) => ({
    type: item.type,
    value: item.value,
    relay: item.relay || null,
    watchedAt: item.watchedAt,
  })),
  "rebuilt snapshot should preserve timestamps"
);

assert(
  observedFilters.some((filters) =>
    filters.some((filter) => {
      const kinds = Array.isArray(filter?.kinds) ? filter.kinds : [];
      return (
        kinds.includes(WATCH_HISTORY_KIND) &&
        kinds.includes(LEGACY_WATCH_HISTORY_KIND)
      );
    })
  ),
  "fetchWatchHistory should request both new and legacy kinds during migration"
);

assert(
  observedFilters.length >= 2,
  "fetch should include a follow-up query for chunk events"
);

const followUpFilters = observedFilters[observedFilters.length - 1];
const identifiersRequested = new Set();
let snapshotRequested = false;

for (const filter of followUpFilters) {
  if (Array.isArray(filter?.["#d"])) {
    for (const identifier of filter["#d"]) {
      identifiersRequested.add(identifier);
    }
  }
  if (Array.isArray(filter?.["#snapshot"])) {
    snapshotRequested = snapshotRequested || filter["#snapshot"].includes(snapshotId);
  }
}

assert(
  chunkEvents.every((event) => {
    const identifier = event.tags.find(
      (tag) => Array.isArray(tag) && tag[0] === "d"
    )?.[1];
    return (
      identifiersRequested.has(identifier) ||
      (snapshotId && snapshotRequested)
    );
  }),
  "follow-up query should target chunk identifiers or snapshot"
);

const OVERFLOW_ACTOR = `${ACTOR}-overflow`;
const overflowSnapshotId = "overflow-snapshot";
const overflowTotalChunks = 18;
const overflowBaseCreatedAt = 1_700_555_000;

const overflowPointers = Array.from({ length: overflowTotalChunks }, (_, index) => {
  const relay = index % 3 === 0 ? "wss://overflow.unit" : null;
  return {
    type: index % 2 === 0 ? "e" : "a",
    value:
      index % 2 === 0
        ? `overflow-event-${index}`
        : `${WATCH_HISTORY_KIND}:${OVERFLOW_ACTOR}:overflow-${index}`,
    relay,
    watchedAt: baseWatchedAt + index * 45_000,
  };
});

const overflowChunkEvents = overflowPointers.map((pointer, index) => {
  const chunkIdentifier = `${WATCH_HISTORY_CHUNK_PREFIX}/${overflowSnapshotId}/${index}`;
  const pointerTag = [pointer.type, pointer.value];
  if (pointer.relay) {
    pointerTag.push(pointer.relay);
  }
  const payload = {
    version: 2,
    snapshot: overflowSnapshotId,
    chunkIndex: index,
    totalChunks: overflowTotalChunks,
    items: [pointer],
  };
  const event = buildWatchHistoryChunkEvent({
    pubkey: OVERFLOW_ACTOR,
    created_at: overflowBaseCreatedAt + (overflowTotalChunks - index),
    chunkIdentifier,
    snapshotId: overflowSnapshotId,
    chunkIndex: index,
    totalChunks: overflowTotalChunks,
    pointerTags: [pointerTag],
    chunkAddresses: [],
    content: JSON.stringify(payload),
  });
  event.id = window.NostrTools.getEventHash(event);
  event.sig = `sig-overflow-chunk-${index}`;
  return event;
});

const overflowIndexEvent = buildWatchHistoryIndexEvent({
  pubkey: OVERFLOW_ACTOR,
  created_at: overflowBaseCreatedAt + overflowTotalChunks + 5,
  snapshotId: overflowSnapshotId,
  totalChunks: overflowTotalChunks,
  chunkAddresses: [],
});
overflowIndexEvent.id = window.NostrTools.getEventHash(overflowIndexEvent);
overflowIndexEvent.sig = "sig-overflow-index";

const overflowClient = createDecryptClient(OVERFLOW_ACTOR);
overflowClient.relays = ["wss://overflow.test"];
// Simulate deployments that kept the fetch limit near the historical default.
overflowClient.watchHistoryFetchEventLimit = 12;

const overflowChunkLimits = [];
overflowClient.pool = {
  list: async (_relays, filters) => {
    const firstFilter = filters[0] || {};
    const dFilter = Array.isArray(firstFilter["#d"]) ? firstFilter["#d"] : [];
    if (filters.length === 1 && dFilter.includes(WATCH_HISTORY_LIST_IDENTIFIER)) {
      return [overflowIndexEvent];
    }

    filters.forEach((filter) => {
      if (Number.isFinite(filter?.limit)) {
        overflowChunkLimits.push(filter.limit);
      }
    });

    const requestedSnapshots = new Set();
    filters.forEach((filter) => {
      if (Array.isArray(filter?.["#snapshot"])) {
        filter["#snapshot"].forEach((value) => {
          if (typeof value === "string" && value) {
            requestedSnapshots.add(value);
          }
        });
      }
    });

    if (!requestedSnapshots.size) {
      return [];
    }

    return overflowChunkEvents.filter((event) => {
      const snapshotTag = event.tags.find(
        (tag) => Array.isArray(tag) && tag[0] === "snapshot"
      );
      return snapshotTag && requestedSnapshots.has(snapshotTag[1]);
    });
  },
};

const overflowFetched = await overflowClient.fetchWatchHistory(OVERFLOW_ACTOR);

assert.equal(
  overflowFetched.items.length,
  overflowTotalChunks,
  "fetch should hydrate snapshots larger than the legacy limit"
);

const maxOverflowLimit = overflowChunkLimits.length
  ? Math.max(...overflowChunkLimits)
  : 0;

assert(
  maxOverflowLimit >= overflowTotalChunks + 1,
  "chunk fetch should cover all chunks plus the newest index event"
);

const MONOTONIC_ACTOR = `${ACTOR}-monotonic`;
const { client: monotonicPublishingClient, publishedEvents: monotonicEvents } =
  createPublishingClient(MONOTONIC_ACTOR);

const monotonicOriginalDateNow = Date.now;
try {
  const monotonicBaseSeconds = 1_700_123_456;
  Date.now = () => monotonicBaseSeconds * 1000;

  const firstMonotonicPointers = [
    { type: "e", value: "event-monotonic-1", relay: null },
    { type: "e", value: "event-monotonic-2", relay: null },
  ];

  const firstSnapshot = await monotonicPublishingClient.publishWatchHistorySnapshot(
    MONOTONIC_ACTOR,
    firstMonotonicPointers
  );

  const baselineEntry = monotonicPublishingClient.createWatchHistoryEntry(
    firstSnapshot.event,
    firstMonotonicPointers,
    Date.now()
  );
  monotonicPublishingClient.watchHistoryCache.set(
    MONOTONIC_ACTOR,
    baselineEntry
  );

  const secondMonotonicPointers = [
    { type: "e", value: "event-monotonic-3", relay: null },
    { type: "e", value: "event-monotonic-1", relay: null },
  ];

  const secondSnapshot = await monotonicPublishingClient.publishWatchHistorySnapshot(
    MONOTONIC_ACTOR,
    secondMonotonicPointers,
    baselineEntry
  );

  assert(
    secondSnapshot.event.created_at > firstSnapshot.event.created_at,
    "new snapshot should advance created_at when reusing the same second"
  );

  const monotonicDecryptClient = createDecryptClient(MONOTONIC_ACTOR);
  monotonicDecryptClient.pool = { list: async () => monotonicEvents };

  const monotonicFetched = await monotonicDecryptClient.fetchWatchHistory(
    MONOTONIC_ACTOR
  );

  assert.deepEqual(
    monotonicFetched.items.map((item) => ({
      type: item.type,
      value: item.value,
      relay: item.relay || null,
    })),
    [
      { type: "e", value: "event-monotonic-3", relay: null },
      { type: "e", value: "event-monotonic-1", relay: null },
    ],
    "newer snapshot should win pointer ordering"
  );
} finally {
  Date.now = monotonicOriginalDateNow;
}

localStorage.clear();

const UPDATE_ACTOR = `${ACTOR}-update`;
const { client: updateClient } = createPublishingClient(UPDATE_ACTOR);
const updateOriginalDateNow = Date.now;
try {
  const updateTimestamp = 1_701_111_111_111;
  Date.now = () => updateTimestamp;

  const updateResult = await updateClient.updateWatchHistoryList({
    type: "e",
    value: "update-pointer",
    relay: null,
  });

  assert.equal(
    updateResult.ok,
    true,
    "updateWatchHistoryList should publish when adding a new pointer"
  );
  const updateEntry = updateClient.watchHistoryCache.get(UPDATE_ACTOR);
  assert(updateEntry, "updateWatchHistoryList should cache the new entry");
  assert.equal(
    updateEntry.items[0].watchedAt,
    updateTimestamp,
    "cached entry should record watchedAt from Date.now()"
  );
  assert.equal(
    updateResult.items[0].watchedAt,
    updateTimestamp,
    "returned publish result should include the watchedAt timestamp"
  );
} finally {
  Date.now = updateOriginalDateNow;
}

const REMOVE_ACTOR = `${ACTOR}-remove`;
const {
  client: removalClient,
  payloads: removalPayloads,
} = createPublishingClient(REMOVE_ACTOR);

const removalPointers = [
  {
    type: "e",
    value: "remove-first",
    relay: null,
    watchedAt: 1_701_222_000_000,
  },
  {
    type: "e",
    value: "remove-second",
    relay: null,
    watchedAt: 1_701_222_100_000,
  },
];

await removalClient.publishWatchHistorySnapshot(
  REMOVE_ACTOR,
  removalPointers
);

const removalKey = `e:${removalPointers[1].value.trim().toLowerCase()}`;
const removalResult = await removalClient.removeWatchHistoryItem(removalKey);

assert.equal(removalResult.ok, true, "removeWatchHistoryItem should succeed");
assert.equal(
  removalResult.removedKey,
  removalKey,
  "removeWatchHistoryItem should echo the removed pointer key"
);

const latestRemovalPayload = removalPayloads[removalPayloads.length - 1];
assert.equal(
  latestRemovalPayload.items.length,
  1,
  "removal republish should trim the pointer list"
);
assert.equal(
  latestRemovalPayload.items[0].value,
  removalPointers[0].value,
  "republished payload should only include remaining pointer"
);
assert.equal(
  latestRemovalPayload.items[0].watchedAt,
  removalPointers[0].watchedAt,
  "republished payload should preserve watchedAt"
);

const removalEntry = removalClient.watchHistoryCache.get(REMOVE_ACTOR);
assert.equal(
  removalEntry.items.length,
  1,
  "watch history cache should drop the removed pointer"
);
assert.equal(
  removalEntry.items[0].value,
  removalPointers[0].value,
  "remaining cached pointer should match the survivor"
);
assert.equal(
  removalEntry.items[0].watchedAt,
  removalPointers[0].watchedAt,
  "remaining cached pointer should retain watchedAt"
);

assert.equal(
  removalResult.items.map((item) => item.value).join(","),
  removalPointers.slice(0, 1).map((item) => item.value).join(","),
  "removeWatchHistoryItem result should reflect updated items"
);
assert.equal(
  removalResult.items[0].watchedAt,
  removalPointers[0].watchedAt,
  "removeWatchHistoryItem result should preserve watchedAt"
);

const VIDEO_POINTER_AUTHOR = `${ACTOR}-video-author`;
const VIDEO_POINTER_IDENTIFIER = "pointer-video-identifier";
const videoPointer = {
  type: "a",
  value: `${WATCH_HISTORY_KIND}:${VIDEO_POINTER_AUTHOR}:${VIDEO_POINTER_IDENTIFIER}`,
  relay: null,
};

const pointerClient = createDecryptClient(ACTOR);
const pointerEntry = pointerClient.createWatchHistoryEntry(
  null,
  [videoPointer],
  Date.now()
);
pointerClient.watchHistoryCache.set(ACTOR, pointerEntry);
pointerClient.fetchWatchHistory = async () => {};

const observedResolveFilters = [];
const videoEvent = {
  id: "video-pointer-event",
  kind: WATCH_HISTORY_KIND,
  pubkey: VIDEO_POINTER_AUTHOR,
  created_at: 1_700_555_000,
  tags: [["d", VIDEO_POINTER_IDENTIFIER]],
  content: JSON.stringify({
    version: 3,
    title: "Pointer Video",
    url: "https://cdn.example.com/video.mp4",
  }),
};

pointerClient.pool = {
  list: async (_relays, filters) => {
    observedResolveFilters.push(filters);
    return [videoEvent];
  },
};

const resolvedFromPointer = await pointerClient.resolveWatchHistory(1);

const pointerKey = `a:${videoPointer.value.trim().toLowerCase()}`;

assert.equal(
  resolvedFromPointer.length,
  1,
  "resolveWatchHistory should return results for 'a' style video pointers"
);
assert.equal(
  resolvedFromPointer[0].id,
  videoEvent.id,
  "resolved video should match the pointer event id"
);
assert.equal(
  resolvedFromPointer[0].title,
  "Pointer Video",
  "resolved video should parse title from the event payload"
);

assert(resolvedFromPointer[0].watchHistory, "resolved video should include watchHistory metadata");
assert.equal(
  resolvedFromPointer[0].watchHistory.key,
  pointerKey,
  "watchHistory metadata should expose the pointer key"
);
assert.equal(
  resolvedFromPointer[0].watchHistory.pointer.value,
  videoPointer.value,
  "watchHistory metadata should include the pointer payload"
);
assert.equal(
  resolvedFromPointer[0].watchHistory.pointer.watchedAt,
  pointerEntry.items[0].watchedAt,
  "watchHistory metadata should preserve watchedAt"
);

const cachedEntry = pointerClient.watchHistoryCache.get(ACTOR);
assert(
  cachedEntry.resolvedVideos.has(pointerKey),
  "resolved cache should retain the video"
);
assert.equal(
  cachedEntry.resolvedVideos.get(pointerKey)?.id,
  videoEvent.id,
  "resolved cache should store the converted video result"
);
assert(
  cachedEntry.delivered.has(pointerKey),
  "delivery set should mark the pointer as delivered"
);

assert(
  observedResolveFilters.some((filters) =>
    filters.some((filter) =>
      Array.isArray(filter?.["#d"]) &&
      filter["#d"].includes(VIDEO_POINTER_IDENTIFIER)
    )
  ),
  "resolveWatchHistory should request the video identifier instead of treating it as a chunk"
);

const secondResolve = await pointerClient.resolveWatchHistory(1);
assert.equal(
  secondResolve.length,
  0,
  "subsequent resolve calls should avoid refetching already delivered videos"
);

pointerClient.resetWatchHistoryProgress(ACTOR);
assert.equal(
  cachedEntry.delivered.size,
  0,
  "resetWatchHistoryProgress should clear delivered pointers"
);

pointerClient.pool = {
  list: async () => {
    throw new Error("cached resolve should not trigger network fetch");
  },
};

const cachedResolve = await pointerClient.resolveWatchHistory(1);
assert.equal(
  cachedResolve.length,
  1,
  "reset should allow cached videos to be delivered again"
);
assert.equal(
  cachedResolve[0].id,
  videoEvent.id,
  "cached resolve should reuse the stored video payload"
);
assert(
  cachedResolve[0].watchHistory?.watchedAt === pointerEntry.items[0].watchedAt,
  "cached resolve should retain watchHistory metadata"
);

const originalDateNow = Date.now;
try {
  const baseTime = 1_700_000_000_000;
  const ttlActor = `${ACTOR}-ttl`;
  const pointer = { type: "e", value: "event-ttl", relay: null };

  const cachingClient = createDecryptClient(ttlActor);
  cachingClient.watchHistoryCacheTtlMs = 24 * 60 * 60 * 1000;

  Date.now = () => baseTime;

  const entry = cachingClient.createWatchHistoryEntry(null, [pointer], baseTime);
  cachingClient.watchHistoryCache.set(ttlActor, entry);
  cachingClient.persistWatchHistoryEntry(ttlActor, entry);

  const reloadClient = createDecryptClient(ttlActor);
  reloadClient.watchHistoryCacheTtlMs = cachingClient.watchHistoryCacheTtlMs;

  Date.now = () => baseTime + 60 * 60 * 1000;

  const cachedSnapshot = await reloadClient.fetchWatchHistory(ttlActor);
  assert.equal(
    cachedSnapshot.items.length,
    1,
    "cached snapshot should survive within extended TTL"
  );
  assert.equal(
    cachedSnapshot.items[0].value,
    pointer.value,
    "cached snapshot should preserve pointer"
  );

  localStorage.clear();

  const expiryClient = createDecryptClient(ttlActor);
  expiryClient.watchHistoryCacheTtlMs = 1_000;

  Date.now = () => baseTime;

  const expiringEntry = expiryClient.createWatchHistoryEntry(
    null,
    [pointer],
    baseTime
  );
  expiryClient.watchHistoryCache.set(ttlActor, expiringEntry);
  expiryClient.persistWatchHistoryEntry(ttlActor, expiringEntry);

  Date.now = () => baseTime + 1_500;

  const expiredSnapshot = await expiryClient.fetchWatchHistory(ttlActor);
  assert.equal(
    expiredSnapshot.items.length,
    0,
    "expired snapshot should be dropped"
  );
  const cachedFallback = expiryClient.watchHistoryCache.get(ttlActor);
  assert.equal(
    cachedFallback?.items?.length ?? 0,
    0,
    "expired snapshot should not preserve stale items in memory"
  );
  const storage = expiryClient.getWatchHistoryStorage();
  assert.equal(
    Object.prototype.hasOwnProperty.call(storage.actors, ttlActor),
    false,
    "expired snapshot should be removed from localStorage"
  );
} finally {
  Date.now = originalDateNow;
}

const plaintextPayload = {
  version: 2,
  snapshot: "plaintext-snapshot",
  chunkIndex: 0,
  totalChunks: 1,
  items: [
    {
      type: "e",
      value: "plaintext-pointer",
      relay: "wss://relay.unit",
      watchedAt: 1_700_000_123_000,
    },
  ],
};

const plaintextChunkEvent = {
  kind: WATCH_HISTORY_KIND,
  pubkey: ACTOR,
  created_at: 333,
  tags: [
    ["d", `${WATCH_HISTORY_CHUNK_PREFIX}/plaintext/0`],
    ["snapshot", plaintextPayload.snapshot],
    ["chunk", String(plaintextPayload.chunkIndex), String(plaintextPayload.totalChunks)],
    ["e", plaintextPayload.items[0].value, plaintextPayload.items[0].relay],
  ],
  content: JSON.stringify(plaintextPayload),
};

const originalWindowNostr = globalThis.window.nostr;
if (!globalThis.window.NostrTools) {
  globalThis.window.NostrTools = {};
}
if (!globalThis.window.NostrTools.nip04) {
  globalThis.window.NostrTools.nip04 = {};
}
const originalSessionDecrypt = globalThis.window.NostrTools.nip04.decrypt;

try {
  globalThis.window.nostr = {
    nip04: {
      decrypt: () => {
        throw new Error("plaintext chunk should not trigger extension decrypt");
      },
    },
  };
  globalThis.window.NostrTools.nip04.decrypt = () => {
    throw new Error("plaintext chunk should not trigger session decrypt");
  };

  const plaintextClient = createDecryptClient(ACTOR);
  const plaintextResult = await plaintextClient.decryptWatchHistoryEvent(
    plaintextChunkEvent,
    ACTOR
  );

  assert.deepEqual(
    plaintextResult.items.map((item) => ({
      type: item.type,
      value: item.value,
      relay: item.relay,
      watchedAt: item.watchedAt,
    })),
    plaintextPayload.items,
    "plaintext payload should be parsed without invoking nip04 helpers",
  );
  assert.equal(
    plaintextResult.snapshot,
    plaintextPayload.snapshot,
    "plaintext payload should preserve snapshot metadata",
  );
  assert.equal(
    plaintextResult.chunkIndex,
    plaintextPayload.chunkIndex,
    "plaintext payload should preserve chunk index",
  );
  assert.equal(
    plaintextResult.totalChunks,
    plaintextPayload.totalChunks,
    "plaintext payload should preserve chunk count",
  );
} finally {
  globalThis.window.nostr = originalWindowNostr;
  if (originalSessionDecrypt === undefined) {
    delete globalThis.window.NostrTools.nip04.decrypt;
  } else {
    globalThis.window.NostrTools.nip04.decrypt = originalSessionDecrypt;
  }
}

const encryptedPayload = {
  version: 2,
  snapshot: "encrypted-snapshot",
  chunkIndex: 0,
  totalChunks: 1,
  items: [
    {
      type: "e",
      value: "encrypted-pointer",
      relay: "wss://relay.unit",
      watchedAt: 1_700_000_456_000,
    },
  ],
};

const encryptedCiphertext = "ZW5jcnlwdGVkQ29udGVudD9mb29iYXI=?iv=YWJjMTIz";

const encryptedChunkEvent = {
  kind: WATCH_HISTORY_KIND,
  pubkey: ACTOR,
  created_at: 444,
  tags: [
    ["d", `${WATCH_HISTORY_CHUNK_PREFIX}/encrypted/0`],
    ["encrypted", "nip04"],
    ["snapshot", encryptedPayload.snapshot],
    ["chunk", String(encryptedPayload.chunkIndex), String(encryptedPayload.totalChunks)],
    ["e", encryptedPayload.items[0].value, encryptedPayload.items[0].relay],
  ],
  content: encryptedCiphertext,
};

const encryptedClient = createDecryptClient(ACTOR);
encryptedClient.pubkey = ACTOR;

const priorWindowNostr = globalThis.window.nostr;
const priorSessionDecrypt = globalThis.window.NostrTools.nip04.decrypt;
let extensionDecryptCalls = 0;
let sessionDecryptCalls = 0;

try {
  globalThis.window.nostr = {
    nip04: {
      decrypt: async (pubkey, ciphertext) => {
        extensionDecryptCalls += 1;
        assert.equal(pubkey, ACTOR, "extension decrypt should target the actor");
        assert.equal(
          ciphertext,
          encryptedCiphertext,
          "extension decrypt should receive the chunk ciphertext",
        );
        return JSON.stringify(encryptedPayload);
      },
    },
  };

  globalThis.window.NostrTools.nip04.decrypt = async () => {
    sessionDecryptCalls += 1;
    return JSON.stringify(encryptedPayload);
  };

  const decryptedResult = await encryptedClient.decryptWatchHistoryEvent(
    encryptedChunkEvent,
    ACTOR
  );

  assert.equal(
    extensionDecryptCalls,
    1,
    "encrypted chunks should invoke extension nip04 decrypt",
  );
  assert.equal(
    sessionDecryptCalls,
    0,
    "successful extension decrypt should skip session fallback",
  );
  assert.deepEqual(
    decryptedResult.items.map((item) => ({
      type: item.type,
      value: item.value,
      relay: item.relay,
      watchedAt: item.watchedAt,
    })),
    encryptedPayload.items,
    "encrypted payload should be reconstructed from decrypted content",
  );
  assert.equal(
    decryptedResult.snapshot,
    encryptedPayload.snapshot,
    "encrypted payload should preserve snapshot metadata",
  );
} finally {
  globalThis.window.nostr = priorWindowNostr;
  if (priorSessionDecrypt === undefined) {
    delete globalThis.window.NostrTools.nip04.decrypt;
  } else {
    globalThis.window.NostrTools.nip04.decrypt = priorSessionDecrypt;
  }
}

const missingSignerClient = createDecryptClient(LOGGED_ACTOR);
missingSignerClient.pubkey = LOGGED_ACTOR;
missingSignerClient.sessionActor = null;

let missingSignerEnsureCalls = 0;
missingSignerClient.ensureSessionActor = async () => {
  missingSignerEnsureCalls += 1;
  return LOGGED_ACTOR;
};

const priorMissingSignerNostr = globalThis.window.nostr;
const priorMissingSignerSessionDecrypt = globalThis.window.NostrTools.nip04.decrypt;
let missingSignerSessionDecryptCalls = 0;

try {
  delete globalThis.window.nostr;
  globalThis.window.NostrTools.nip04.decrypt = async () => {
    missingSignerSessionDecryptCalls += 1;
    return JSON.stringify(encryptedPayload);
  };

  const missingSignerChunkEvent = {
    ...encryptedChunkEvent,
    pubkey: LOGGED_ACTOR,
    id: "missing-signer-event",
  };

  const missingSignerResult = await missingSignerClient.decryptWatchHistoryEvent(
    missingSignerChunkEvent,
    LOGGED_ACTOR
  );

  assert.equal(
    missingSignerEnsureCalls,
    0,
    "missing signer should not trigger session actor ensure"
  );
  assert.equal(
    missingSignerSessionDecryptCalls,
    0,
    "missing signer should skip session decrypt fallback"
  );
  assert.equal(
    missingSignerResult.needsSignerRetry,
    true,
    "missing signer fallback should mark retry flag"
  );
  assert.deepEqual(
    missingSignerResult.items.map((item) => ({
      type: item.type,
      value: item.value,
      relay: item.relay || null,
    })),
    encryptedPayload.items.map((item) => ({
      type: item.type,
      value: item.value,
      relay: item.relay || null,
    })),
    "missing signer fallback should preserve pointer metadata"
  );
} finally {
  if (priorMissingSignerNostr === undefined) {
    delete globalThis.window.nostr;
  } else {
    globalThis.window.nostr = priorMissingSignerNostr;
  }
  if (priorMissingSignerSessionDecrypt === undefined) {
    delete globalThis.window.NostrTools.nip04.decrypt;
  } else {
    globalThis.window.NostrTools.nip04.decrypt = priorMissingSignerSessionDecrypt;
  }
}

const unsortedVideos = [
  { id: "alpha", watchHistory: { watchedAt: 1_700_000_000_500 } },
  { id: "bravo", watchHistory: { watchedAt: 1_700_000_010_000 } },
  { id: "charlie", created_at: 1_699_999_000 },
];

const sortedVideos = unsortedVideos.slice().sort(compareByWatchedAtDesc);

assert.deepEqual(
  sortedVideos.map((video) => video.id),
  ["bravo", "alpha", "charlie"],
  "videos should be ordered by watchedAt descending with created_at fallback",
);

const tieVideos = [
  { id: "echo", watchHistory: { watchedAt: 1_700_100_000_000 }, created_at: 1_700_100_100 },
  { id: "delta", watchHistory: { watchedAt: 1_700_100_000_000 }, created_at: 1_700_100_200 },
  { id: "foxtrot", watchHistory: { watchedAt: 1_700_100_000_000 }, created_at: 1_700_100_200 },
];

tieVideos.sort(compareByWatchedAtDesc);

assert.equal(
  getWatchedAtScore(tieVideos[0]),
  getWatchedAtScore(tieVideos[1]),
  "ties should preserve identical watchedAt scores",
);

assert.deepEqual(
  tieVideos.map((video) => video.id),
  ["delta", "foxtrot", "echo"],
  "created_at should break watchedAt ties with stable fallback",
);

console.log("watch history tests passed");