From e0f2973d20138ecce033747ab3288c184b6ebb13 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Sat, 2 May 2026 09:21:53 +0100
Subject: [PATCH] refactor: trim qqbot known user store

---
 .../qqbot/src/engine/session/known-users.ts   | 119 +-----------------
 1 file changed, 1 insertion(+), 118 deletions(-)

diff --git a/extensions/qqbot/src/engine/session/known-users.ts b/extensions/qqbot/src/engine/session/known-users.ts
index dc354175b98..7fdb35264aa 100644
--- a/extensions/qqbot/src/engine/session/known-users.ts
+++ b/extensions/qqbot/src/engine/session/known-users.ts
@@ -13,7 +13,7 @@ import { debugLog, debugError } from "../utils/log.js";
 import { getQQBotDataDir, getQQBotDataPath } from "../utils/platform.js";
 
 /** Persisted record for a user who has interacted with the bot. */
-export interface KnownUser {
+interface KnownUser {
   openid: string;
   type: ChatScope;
   nickname?: string;
@@ -135,120 +135,3 @@ export function recordKnownUser(user: {
   isDirty = true;
   saveUsersToFile();
 }
-
-/** Look up one known user. */
-export function getKnownUser(
-  accountId: string,
-  openid: string,
-  type: ChatScope = "c2c",
-  groupOpenid?: string,
-): KnownUser | undefined {
-  return loadUsersFromFile().get(makeUserKey({ accountId, openid, type, groupOpenid }));
-}
-
-/** List known users with optional filtering and sorting. */
-export function listKnownUsers(options?: {
-  accountId?: string;
-  type?: ChatScope;
-  activeWithin?: number;
-  limit?: number;
-  sortBy?: "lastSeenAt" | "firstSeenAt" | "interactionCount";
-  sortOrder?: "asc" | "desc";
-}): KnownUser[] {
-  let users = Array.from(loadUsersFromFile().values());
-  if (options?.accountId) {
-    users = users.filter((u) => u.accountId === options.accountId);
-  }
-  if (options?.type) {
-    users = users.filter((u) => u.type === options.type);
-  }
-  if (options?.activeWithin) {
-    const cutoff = Date.now() - options.activeWithin;
-    users = users.filter((u) => u.lastSeenAt >= cutoff);
-  }
-  const sortBy = options?.sortBy ?? "lastSeenAt";
-  const sortOrder = options?.sortOrder ?? "desc";
-  users.sort((a, b) => {
-    const aV = a[sortBy] ?? 0;
-    const bV = b[sortBy] ?? 0;
-    return sortOrder === "asc" ? aV - bV : bV - aV;
-  });
-  if (options?.limit && options.limit > 0) {
-    users = users.slice(0, options.limit);
-  }
-  return users;
-}
-
-/** Return summary stats for known users. */
-export function getKnownUsersStats(accountId?: string): {
-  totalUsers: number;
-  c2cUsers: number;
-  groupUsers: number;
-  activeIn24h: number;
-  activeIn7d: number;
-} {
-  const users = listKnownUsers({ accountId });
-  const now = Date.now();
-  const day = 86400000;
-  return {
-    totalUsers: users.length,
-    c2cUsers: users.filter((u) => u.type === "c2c").length,
-    groupUsers: users.filter((u) => u.type === "group").length,
-    activeIn24h: users.filter((u) => now - u.lastSeenAt < day).length,
-    activeIn7d: users.filter((u) => now - u.lastSeenAt < 7 * day).length,
-  };
-}
-
-/** Remove one user record. */
-export function removeKnownUser(
-  accountId: string,
-  openid: string,
-  type: ChatScope = "c2c",
-  groupOpenid?: string,
-): boolean {
-  const cache = loadUsersFromFile();
-  const key = makeUserKey({ accountId, openid, type, groupOpenid });
-  if (cache.has(key)) {
-    cache.delete(key);
-    isDirty = true;
-    saveUsersToFile();
-    debugLog(`[known-users] Removed user ${openid}`);
-    return true;
-  }
-  return false;
-}
-
-/** Clear all user records, optionally scoped to one account. */
-export function clearKnownUsers(accountId?: string): number {
-  const cache = loadUsersFromFile();
-  let count = 0;
-  if (accountId) {
-    for (const [key, user] of cache.entries()) {
-      if (user.accountId === accountId) {
-        cache.delete(key);
-        count++;
-      }
-    }
-  } else {
-    count = cache.size;
-    cache.clear();
-  }
-  if (count > 0) {
-    isDirty = true;
-    doSaveUsersToFile();
-    debugLog(`[known-users] Cleared ${count} users`);
-  }
-  return count;
-}
-
-/** Return all groups in which a user has interacted. */
-export function getUserGroups(accountId: string, openid: string): string[] {
-  return listKnownUsers({ accountId, type: "group" })
-    .filter((u) => u.openid === openid && u.groupOpenid)
-    .map((u) => u.groupOpenid!);
-}
-
-/** Return all recorded members for one group. */
-export function getGroupMembers(accountId: string, groupOpenid: string): KnownUser[] {
-  return listKnownUsers({ accountId, type: "group" }).filter((u) => u.groupOpenid === groupOpenid);
-}