refactor(bluebubbles): split monitor parsing and processing modules

extensions/bluebubbles/src/monitor-reply-cache.ts

@@ -0,0 +1,185 @@
+const REPLY_CACHE_MAX = 2000;
+const REPLY_CACHE_TTL_MS = 6 * 60 * 60 * 1000;
+
+type BlueBubblesReplyCacheEntry = {
+  accountId: string;
+  messageId: string;
+  shortId: string;
+  chatGuid?: string;
+  chatIdentifier?: string;
+  chatId?: number;
+  senderLabel?: string;
+  body?: string;
+  timestamp: number;
+};
+
+// Best-effort cache for resolving reply context when BlueBubbles webhooks omit sender/body.
+const blueBubblesReplyCacheByMessageId = new Map<string, BlueBubblesReplyCacheEntry>();
+
+// Bidirectional maps for short ID ↔ message GUID resolution (token savings optimization)
+const blueBubblesShortIdToUuid = new Map<string, string>();
+const blueBubblesUuidToShortId = new Map<string, string>();
+let blueBubblesShortIdCounter = 0;
+
+function trimOrUndefined(value?: string | null): string | undefined {
+  const trimmed = value?.trim();
+  return trimmed ? trimmed : undefined;
+}
+
+function generateShortId(): string {
+  blueBubblesShortIdCounter += 1;
+  return String(blueBubblesShortIdCounter);
+}
+
+export function rememberBlueBubblesReplyCache(
+  entry: Omit<BlueBubblesReplyCacheEntry, "shortId">,
+): BlueBubblesReplyCacheEntry {
+  const messageId = entry.messageId.trim();
+  if (!messageId) {
+    return { ...entry, shortId: "" };
+  }
+
+  // Check if we already have a short ID for this GUID
+  let shortId = blueBubblesUuidToShortId.get(messageId);
+  if (!shortId) {
+    shortId = generateShortId();
+    blueBubblesShortIdToUuid.set(shortId, messageId);
+    blueBubblesUuidToShortId.set(messageId, shortId);
+  }
+
+  const fullEntry: BlueBubblesReplyCacheEntry = { ...entry, messageId, shortId };
+
+  // Refresh insertion order.
+  blueBubblesReplyCacheByMessageId.delete(messageId);
+  blueBubblesReplyCacheByMessageId.set(messageId, fullEntry);
+
+  // Opportunistic prune.
+  const cutoff = Date.now() - REPLY_CACHE_TTL_MS;
+  for (const [key, value] of blueBubblesReplyCacheByMessageId) {
+    if (value.timestamp < cutoff) {
+      blueBubblesReplyCacheByMessageId.delete(key);
+      // Clean up short ID mappings for expired entries
+      if (value.shortId) {
+        blueBubblesShortIdToUuid.delete(value.shortId);
+        blueBubblesUuidToShortId.delete(key);
+      }
+      continue;
+    }
+    break;
+  }
+  while (blueBubblesReplyCacheByMessageId.size > REPLY_CACHE_MAX) {
+    const oldest = blueBubblesReplyCacheByMessageId.keys().next().value as string | undefined;
+    if (!oldest) {
+      break;
+    }
+    const oldEntry = blueBubblesReplyCacheByMessageId.get(oldest);
+    blueBubblesReplyCacheByMessageId.delete(oldest);
+    // Clean up short ID mappings for evicted entries
+    if (oldEntry?.shortId) {
+      blueBubblesShortIdToUuid.delete(oldEntry.shortId);
+      blueBubblesUuidToShortId.delete(oldest);
+    }
+  }
+
+  return fullEntry;
+}
+
+/**
+ * Resolves a short message ID (e.g., "1", "2") to a full BlueBubbles GUID.
+ * Returns the input unchanged if it's already a GUID or not found in the mapping.
+ */
+export function resolveBlueBubblesMessageId(
+  shortOrUuid: string,
+  opts?: { requireKnownShortId?: boolean },
+): string {
+  const trimmed = shortOrUuid.trim();
+  if (!trimmed) {
+    return trimmed;
+  }
+
+  // If it looks like a short ID (numeric), try to resolve it
+  if (/^\d+$/.test(trimmed)) {
+    const uuid = blueBubblesShortIdToUuid.get(trimmed);
+    if (uuid) {
+      return uuid;
+    }
+    if (opts?.requireKnownShortId) {
+      throw new Error(
+        `BlueBubbles short message id "${trimmed}" is no longer available. Use MessageSidFull.`,
+      );
+    }
+  }
+
+  // Return as-is (either already a UUID or not found)
+  return trimmed;
+}
+
+/**
+ * Resets the short ID state. Only use in tests.
+ * @internal
+ */
+export function _resetBlueBubblesShortIdState(): void {
+  blueBubblesShortIdToUuid.clear();
+  blueBubblesUuidToShortId.clear();
+  blueBubblesReplyCacheByMessageId.clear();
+  blueBubblesShortIdCounter = 0;
+}
+
+/**
+ * Gets the short ID for a message GUID, if one exists.
+ */
+export function getShortIdForUuid(uuid: string): string | undefined {
+  return blueBubblesUuidToShortId.get(uuid.trim());
+}
+
+export function resolveReplyContextFromCache(params: {
+  accountId: string;
+  replyToId: string;
+  chatGuid?: string;
+  chatIdentifier?: string;
+  chatId?: number;
+}): BlueBubblesReplyCacheEntry | null {
+  const replyToId = params.replyToId.trim();
+  if (!replyToId) {
+    return null;
+  }
+
+  const cached = blueBubblesReplyCacheByMessageId.get(replyToId);
+  if (!cached) {
+    return null;
+  }
+  if (cached.accountId !== params.accountId) {
+    return null;
+  }
+
+  const cutoff = Date.now() - REPLY_CACHE_TTL_MS;
+  if (cached.timestamp < cutoff) {
+    blueBubblesReplyCacheByMessageId.delete(replyToId);
+    return null;
+  }
+
+  const chatGuid = trimOrUndefined(params.chatGuid);
+  const chatIdentifier = trimOrUndefined(params.chatIdentifier);
+  const cachedChatGuid = trimOrUndefined(cached.chatGuid);
+  const cachedChatIdentifier = trimOrUndefined(cached.chatIdentifier);
+  const chatId = typeof params.chatId === "number" ? params.chatId : undefined;
+  const cachedChatId = typeof cached.chatId === "number" ? cached.chatId : undefined;
+
+  // Avoid cross-chat collisions if we have identifiers.
+  if (chatGuid && cachedChatGuid && chatGuid !== cachedChatGuid) {
+    return null;
+  }
+  if (
+    !chatGuid &&
+    chatIdentifier &&
+    cachedChatIdentifier &&
+    chatIdentifier !== cachedChatIdentifier
+  ) {
+    return null;
+  }
+  if (!chatGuid && !chatIdentifier && chatId && cachedChatId && chatId !== cachedChatId) {
+    return null;
+  }
+
+  return cached;
+}