Restore canonical watch history snapshot format

config/instance-config.js

@@ -63,14 +63,14 @@ export const WATCH_HISTORY_KIND = 30078;
  * BitVid deployments that share relays, but keep it stable once clients begin
  * syncing history.
  */
-export const WATCH_HISTORY_LIST_IDENTIFIER = "watch-history:v2:index";
+export const WATCH_HISTORY_LIST_IDENTIFIER = "watch-history";
 
 /**
  * Legacy identifiers that BitVid clients should continue honoring when
  * fetching historical watch-history snapshots.
  */
 export const WATCH_HISTORY_LEGACY_LIST_IDENTIFIERS = Object.freeze([
-  "watch-history",
+  "watch-history:v2:index",
 ]);
 
 /**

docs/nostr-event-schemas.md

@@ -64,10 +64,12 @@ builders inherit the same debugging knobs.
 ### Watch history identifiers
 
 Watch-history snapshots now publish a dedicated index event with
-`#d ${WATCH_HISTORY_LIST_IDENTIFIER}` (defaults to `watch-history:v2:index`). The
+`#d ${WATCH_HISTORY_LIST_IDENTIFIER}` (defaults to `watch-history`). The
 index advertises the active snapshot id, total chunk count, and a pointer to
 each chunk via `a` tags so clients can fetch the encrypted payloads without
-guessing identifiers.
+guessing identifiers. Deployments that previously used
+`watch-history:v2:index` continue to resolve thanks to the legacy identifier
+list.
 
 Every chunk event uses a unique `d` tag such as
 `watch-history:v2/<snapshot>/<chunkIndex>`. Legacy snapshots created before the

js/app.js

@@ -4283,6 +4283,29 @@ class bitvidApp {
         }
         button.dataset.navBound = "true";
         button.addEventListener("click", () => {
+          if (name === "history") {
+            let actorCandidate;
+            if (typeof this.pubkey === "string" && this.pubkey.trim()) {
+              actorCandidate = this.pubkey.trim();
+            } else if (
+              typeof window?.app?.pubkey === "string" &&
+              window.app.pubkey.trim()
+            ) {
+              actorCandidate = window.app.pubkey.trim();
+            }
+
+            void nostrClient
+              .fetchWatchHistory(actorCandidate, { forceRefresh: true })
+              .catch((error) => {
+                if (isDevMode) {
+                  console.warn(
+                    "[profileModal] Failed to prefetch watch history on navigation:",
+                    error
+                  );
+                }
+              });
+          }
+
           this.selectProfilePane(name);
         });
       });

js/index.js

@@ -2,6 +2,45 @@
 
 import "./bufferPolyfill.js";
 import { trackPageView } from "./analytics.js";
+import { nostrClient } from "./nostr.js";
+
+const HISTORY_PREFETCH_DEBOUNCE_MS = 250;
+
+function prefetchWatchHistory(options = {}) {
+  if (typeof nostrClient?.fetchWatchHistory !== "function") {
+    return;
+  }
+
+  const force = options.force === true;
+  const now = Date.now();
+
+  if (typeof window !== "undefined") {
+    const last =
+      typeof window.__bitvidLastHistoryPrefetch === "number"
+        ? window.__bitvidLastHistoryPrefetch
+        : 0;
+
+    if (!force && now - last < HISTORY_PREFETCH_DEBOUNCE_MS) {
+      return;
+    }
+
+    window.__bitvidLastHistoryPrefetch = now;
+  }
+
+  let actor;
+  if (typeof window?.app?.pubkey === "string" && window.app.pubkey.trim()) {
+    actor = window.app.pubkey.trim();
+  }
+
+  void nostrClient
+    .fetchWatchHistory(actor, { forceRefresh: true })
+    .catch((error) => {
+      console.warn(
+        "[index] Failed to prefetch watch history during navigation:",
+        error
+      );
+    });
+}
 
 const INTERFACE_FADE_IN_ANIMATION = "interface-fade-in";
 const VIDEO_THUMBNAIL_FADE_IN_ANIMATION = "video-thumbnail-fade-in";
@@ -257,6 +296,11 @@ export function setHashView(viewName) {
   url.searchParams.delete("v");
   const newUrl = url.pathname + url.search + `#view=${viewName}`;
   window.history.replaceState({}, "", newUrl);
+
+  if (typeof viewName === "string" && viewName.toLowerCase() === "history") {
+    prefetchWatchHistory({ force: true });
+  }
+
   handleHashChange();
 }
 
@@ -403,6 +447,9 @@ async function handleHashChange() {
     }
 
     const viewName = match[1]; // only the chunk before any '&'
+    if (typeof viewName === "string" && viewName.toLowerCase() === "history") {
+      prefetchWatchHistory();
+    }
     const viewUrl = `views/${viewName}.html`;
 
     // Now dynamically load that partial, then call its init function

js/nostr.js

@@ -58,7 +58,28 @@ const WATCH_HISTORY_INDEX_IDENTIFIER_LOWER =
     ? WATCH_HISTORY_LIST_IDENTIFIER.trim().toLowerCase()
     : "";
 
-const WATCH_HISTORY_CHUNK_V2_PREFIX = "watch-history:v2";
+const WATCH_HISTORY_CHUNK_V2_PREFIX = (() => {
+  const rawIdentifier =
+    typeof WATCH_HISTORY_LIST_IDENTIFIER === "string"
+      ? WATCH_HISTORY_LIST_IDENTIFIER.trim()
+      : "";
+
+  if (rawIdentifier) {
+    const trimmed = rawIdentifier.replace(/\/+$/, "");
+    if (/[:/]index$/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`;
+  }
+
+  return "watch-history:v2";
+})();
 
 const LEGACY_WATCH_HISTORY_CHUNK_IDENTIFIER_PREFIX = (() => {
   const rawIdentifier =

tests/watch-history.test.mjs

@@ -109,9 +109,30 @@ function createDecryptClient(actorPubkey) {
 }
 
 const ACTOR = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
-const WATCH_HISTORY_CHUNK_PREFIX = WATCH_HISTORY_LIST_IDENTIFIER.replace(
-  /[:/]index$/i,
-  ""
+function deriveChunkPrefix(identifier) {
+  if (typeof identifier !== "string") {
+    return "watch-history:v2";
+  }
+
+  const trimmed = identifier.trim().replace(/\/+$/, "");
+  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);