import Parse from '../../../../shared/db/parse-client.js';
import { deriveHealthMetrics } from '../utils/group-metrics.util.js';
import { type LifecyclePhase } from '../utils/lifecycle.util.js';
import { getCommunityLifecycleMap, listCommunities } from './community.service.js';
import { getDefaultStore, resolveOwnerName } from './organization.service.js';
import { listGroupMembersByRoom, type GroupMemberDto } from './group-members.service.js';
import { batchGetRoomDetails, getContactDetailsBatch } from './qiwe-api.service.js';

export interface GroupChatDto {
  id: string;
  roomId: string;
  roomName: string;
  ownerId: string;
  ownerName: string;
  memberCount: number;
  avatarUrl: string;
  status: string;
  guid: string;
  storeId: string;
  storeName: string;
  communityId: string;
  communityName: string;
  activityLevel: string;
  healthScore: number;
  healthStatus: string;
  healthGrade: string;
  opsActivityScore: number;
  customerActivityScore: number;
  lifecyclePhase: string;
  hasDocument: boolean;
  documentPinned: boolean;
  documentInNotice: boolean;
  messageCountToday: number;
  messageCountTotal: number;
  memberChange24h: number;
  createdAt: string;
  ownerRole: string;
  updatedAt: string;
}

export interface GroupListFilters {
  storeId?: string;
  activityLevel?: string;
  healthStatus?: string;
  healthGrade?: string;
  lifecyclePhase?: string;
  hasDocument?: boolean;
  q?: string;
}

function startOfToday(): Date {
  const shanghaiDate = new Date().toLocaleDateString('en-CA', { timeZone: 'Asia/Shanghai' });
  return new Date(`${shanghaiDate}T00:00:00+08:00`);
}

async function countMessagesToday(roomId: string): Promise<number> {
  const query = new Parse.Query('Message');
  query.equalTo('roomId', roomId);
  query.containedIn('msgType', [0, 2, 6, 13, 14, 15, 16, 20, 22, 23, 29, 41, 78, 123, 141, 146, 213]);
  query.greaterThanOrEqualTo('timestamp', startOfToday());
  return query.count({ useMasterKey: true });
}

async function countMessagesTotal(roomId: string): Promise<number> {
  const query = new Parse.Query('Message');
  query.equalTo('roomId', roomId);
  query.containedIn('msgType', [0, 2, 6, 13, 14, 15, 16, 20, 22, 23, 29, 41, 78, 123, 141, 146, 213]);
  return query.count({ useMasterKey: true });
}

/** 消息入库时发现群不存在则创建占位群，便于列表与详情按 roomId 关联 */
export async function ensureGroupChatForRoom(roomId: string, guid: string): Promise<void> {
  if (!roomId || !guid) return;
  const query = new Parse.Query('GroupChat');
  query.equalTo('roomId', roomId);
  query.equalTo('guid', guid);
  const existing = await query.first({ useMasterKey: true });
  if (existing) return;

  const obj = new Parse.Object('GroupChat');
  obj.set('roomId', roomId);
  obj.set('guid', guid);
  obj.set('roomName', `群 ${roomId.slice(-6)}`);
  obj.set('status', 'active');
  obj.set('memberCount', 0);
  initNewGroupDefaults(obj);
  await obj.save(null, { useMasterKey: true });
  console.log(`[GroupChat] 由消息自动创建群 roomId=${roomId}`);
}

/** 根据已同步的群消息补全 GroupChat（roomId 与 Message 对齐） */
export async function backfillGroupChatsFromMessages(guid: string): Promise<number> {
  const query = new Parse.Query('Message');
  query.equalTo('guid', guid);
  query.equalTo('isGroupChat', 1);
  query.exists('roomId');
  query.limit(5000);
  query.select('roomId');
  const rows = await query.find({ useMasterKey: true });

  const roomIds = new Set<string>();
  for (const row of rows) {
    const rid = row.get('roomId');
    const key = rid ? String(rid) : '';
    if (key.length >= 14 && /^\d+$/.test(key)) roomIds.add(key);
  }

  let created = 0;
  for (const roomId of roomIds) {
    const before = new Parse.Query('GroupChat');
    before.equalTo('roomId', roomId);
    before.equalTo('guid', guid);
    const had = await before.first({ useMasterKey: true });
    if (had) continue;
    await ensureGroupChatForRoom(roomId, guid);
    created++;
  }
  if (created > 0) {
    console.log(`[GroupChat] 从消息补全 ${created} 个群记录`);
  }
  return created;
}

const METRICS_FRESH_MS = 10 * 60 * 1000;

/** 详情页读取：优先用库内缓存指标，避免每次打开都扫 Message 表 */
async function enrichGroupForRead(
  obj: Parse.Object,
  lifecycleMap: Map<string, LifecyclePhase>,
): Promise<GroupChatDto> {
  const roomId = obj.get('roomId') as string;
  const memberCount = obj.get('memberCount') ?? 0;
  const status = obj.get('status') || 'active';
  const hasDocument = obj.get('hasDocument') === true;
  const documentPinned = obj.get('documentPinned') === true;
  const documentInNotice = obj.get('documentInNotice') === true;
  const memberChange24h = obj.get('memberChange24h') ?? 0;
  const updatedAt = obj.get('updatedAt') as Date | undefined;
  const cachedTotal = obj.get('messageCountTotal') ?? 0;
  const freshMetrics =
    cachedTotal > 0
    && updatedAt
    && Date.now() - updatedAt.getTime() < METRICS_FRESH_MS;

  let messageCountToday = obj.get('messageCountToday') ?? 0;
  let messageCountTotal = cachedTotal;

  if (!freshMetrics) {
    [messageCountToday, messageCountTotal] = await Promise.all([
      countMessagesToday(roomId),
      messageCountTotal > 0 ? Promise.resolve(messageCountTotal) : countMessagesTotal(roomId),
    ]);
  }

  const metrics = deriveHealthMetrics({
    memberCount,
    messageCountToday,
    memberChange24h,
    hasDocument,
    documentPinned,
    documentInNotice,
    status,
  });

  const communityId = obj.get('communityId') as string;
  const lifecyclePhase = communityId && lifecycleMap.has(communityId)
    ? lifecycleMap.get(communityId)!
    : (obj.get('lifecyclePhase') as string) || 'pre_handover';

  obj.set('messageCountToday', messageCountToday);
  obj.set('messageCountTotal', messageCountTotal);
  obj.set('activityLevel', metrics.activityLevel);
  obj.set('opsActivityScore', metrics.opsActivityScore);
  obj.set('customerActivityScore', metrics.customerActivityScore);
  obj.set('healthGrade', metrics.healthGrade);
  obj.set('healthScore', metrics.healthScore);
  obj.set('healthStatus', metrics.healthStatus);
  obj.set('lifecyclePhase', lifecyclePhase);

  if (!freshMetrics) {
    void obj.save(null, { useMasterKey: true }).catch(() => {});
  }

  return toDto(obj);
}

async function enrichGroup(
  obj: Parse.Object,
  lifecycleMap: Map<string, LifecyclePhase>,
  persist = true,
): Promise<GroupChatDto> {
  const roomId = obj.get('roomId') as string;
  const guid = (obj.get('guid') as string) || '';
  const memberCount = obj.get('memberCount') ?? 0;
  const status = obj.get('status') || 'active';
  const hasDocument = obj.get('hasDocument') === true;
  const documentPinned = obj.get('documentPinned') === true;
  const documentInNotice = obj.get('documentInNotice') === true;
  const memberChange24h = obj.get('memberChange24h') ?? 0;
  const [messageCountToday, messageCountTotal] = await Promise.all([
    countMessagesToday(roomId),
    countMessagesTotal(roomId),
  ]);

  const metrics = deriveHealthMetrics({
    memberCount,
    messageCountToday,
    memberChange24h,
    hasDocument,
    documentPinned,
    documentInNotice,
    status,
  });

  const communityId = obj.get('communityId') as string;
  const lifecyclePhase = communityId && lifecycleMap.has(communityId)
    ? lifecycleMap.get(communityId)!
    : (obj.get('lifecyclePhase') as string) || 'pre_handover';

  let ownerName = (obj.get('ownerName') as string) || '';
  if (!ownerName && obj.get('ownerId')) {
    ownerName = await resolveOwnerName(obj.get('ownerId') || '');
    if (ownerName) {
      obj.set('ownerName', ownerName);
    }
  }

  obj.set('messageCountToday', messageCountToday);
  obj.set('messageCountTotal', messageCountTotal);
  obj.set('activityLevel', metrics.activityLevel);
  obj.set('opsActivityScore', metrics.opsActivityScore);
  obj.set('customerActivityScore', metrics.customerActivityScore);
  obj.set('healthGrade', metrics.healthGrade);
  obj.set('healthScore', metrics.healthScore);
  obj.set('healthStatus', metrics.healthStatus);
  obj.set('lifecyclePhase', lifecyclePhase);

  if (persist) {
    await obj.save(null, { useMasterKey: true });
  }

  return toDto(obj);
}

function toListDto(obj: Parse.Object, lifecycleMap: Map<string, LifecyclePhase>): GroupChatDto {
  const dto = toDto(obj);
  const communityId = obj.get('communityId') as string;
  if (communityId && lifecycleMap.has(communityId)) {
    dto.lifecyclePhase = lifecycleMap.get(communityId)!;
  }
  return dto;
}

function toDto(obj: Parse.Object): GroupChatDto {
  return {
    id: obj.id!,
    roomId: obj.get('roomId') || '',
    roomName: obj.get('roomName') || '未命名群',
    ownerId: obj.get('ownerId') || '',
    ownerName: obj.get('ownerName') || '',
    memberCount: obj.get('memberCount') ?? 0,
    avatarUrl: obj.get('avatarUrl') || '',
    status: obj.get('status') || 'active',
    guid: obj.get('guid') || '',
    storeId: obj.get('storeId') || '',
    storeName: obj.get('storeName') || '',
    communityId: obj.get('communityId') || '',
    communityName: obj.get('communityName') || '',
    activityLevel: obj.get('activityLevel') || 'inactive',
    healthScore: obj.get('healthScore') ?? 0,
    healthStatus: obj.get('healthStatus') || 'warning',
    healthGrade: obj.get('healthGrade') || 'C',
    opsActivityScore: obj.get('opsActivityScore') ?? 0,
    customerActivityScore: obj.get('customerActivityScore') ?? 0,
    lifecyclePhase: obj.get('lifecyclePhase') || 'pre_handover',
    hasDocument: obj.get('hasDocument') === true,
    documentPinned: obj.get('documentPinned') === true,
    documentInNotice: obj.get('documentInNotice') === true,
    messageCountToday: obj.get('messageCountToday') ?? 0,
    messageCountTotal: obj.get('messageCountTotal') ?? 0,
    memberChange24h: obj.get('memberChange24h') ?? 0,
    createdAt: (obj.get('createdAt') as Date)?.toISOString?.() || new Date().toISOString(),
    ownerRole: (obj.get('ownerRole') as string) || '',
    updatedAt: (obj.get('updatedAt') as Date)?.toISOString?.() || new Date().toISOString(),
  };
}

async function countActiveMembers(roomId: string): Promise<number> {
  const query = new Parse.Query('GroupMember');
  query.equalTo('roomId', roomId);
  query.notEqualTo('status', 'left');
  return query.count({ useMasterKey: true });
}

async function resolveOwnerProfile(ownerId: string): Promise<{ name: string; role: string }> {
  if (!ownerId) return { name: '', role: '' };

  const orgQuery = new Parse.Query('OrgMember');
  orgQuery.equalTo('userId', ownerId);
  const orgMember = await orgQuery.first({ useMasterKey: true });
  if (orgMember) {
    return {
      name: String(orgMember.get('name') || ownerId),
      role: String(orgMember.get('position') || '群主'),
    };
  }

  if (ACTIVE_QIWE_GUID) {
    try {
      const contacts = await getContactDetailsBatch([ownerId]);
      const contact = contacts[0];
      if (contact) {
        return {
          name: contact.name || ownerId,
          role: contact.position || '群主',
        };
      }
    } catch {
      /* 联系人接口失败时回退 userId */
    }
  }

  return { name: ownerId, role: '群主' };
}

async function ensureOrganizationFields(obj: Parse.Object): Promise<void> {
  if (!obj.get('storeId')) {
    const def = await getDefaultStore();
    if (def.storeId) {
      obj.set('storeId', def.storeId);
      obj.set('storeName', def.storeName);
    }
  }

  if (!obj.get('communityId')) {
    const roomName = String(obj.get('roomName') || '');
    const communities = await listCommunities();
    const match = communities
      .filter((c) => c.name && roomName.includes(c.name))
      .sort((a, b) => b.name.length - a.name.length)[0];
    if (match) {
      obj.set('communityId', match.id);
      obj.set('communityName', match.name);
      if (!obj.get('storeId') && match.storeId) {
        obj.set('storeId', match.storeId);
        obj.set('storeName', match.storeName);
      }
    }
  }
}

async function borrowOwnerFromSiblingRows(obj: Parse.Object, roomId: string): Promise<void> {
  if (obj.get('ownerId')) return;

  const query = new Parse.Query('GroupChat');
  query.equalTo('roomId', roomId);
  query.exists('ownerId');
  query.limit(20);
  const rows = await query.find({ useMasterKey: true });
  for (const row of rows) {
    const ownerId = String(row.get('ownerId') || '');
    if (!ownerId) continue;
    obj.set('ownerId', ownerId);
    if (row.get('ownerName')) obj.set('ownerName', row.get('ownerName'));
    return;
  }
}

async function inferOwnerFromMembers(
  roomId: string,
  members: GroupMemberDto[],
): Promise<{ ownerId: string; name: string; role: string } | null> {
  if (members.length === 0) return null;

  const userIds = members.map((m) => m.userId).filter(Boolean);
  const orgQuery = new Parse.Query('OrgMember');
  orgQuery.containedIn('userId', userIds.slice(0, 100));
  orgQuery.limit(100);
  const orgRows = await orgQuery.find({ useMasterKey: true });
  const orgMap = new Map(orgRows.map((row) => [String(row.get('userId')), row]));

  for (const member of members) {
    const org = orgMap.get(member.userId);
    if (org) {
      return {
        ownerId: member.userId,
        name: String(org.get('name') || member.nickname || member.userId),
        role: String(org.get('position') || '负责人'),
      };
    }
  }

  const msgQuery = new Parse.Query('Message');
  msgQuery.equalTo('roomId', roomId);
  msgQuery.limit(200);
  msgQuery.select('senderId', 'senderName');
  const messages = await msgQuery.find({ useMasterKey: true });
  const counts = new Map<string, { count: number; name: string }>();
  for (const message of messages) {
    const userId = String(message.get('senderId') || '');
    if (!userId) continue;
    const senderName = String(message.get('senderName') || userId);
    const current = counts.get(userId) || { count: 0, name: senderName };
    current.count += 1;
    if (senderName !== userId) current.name = senderName;
    counts.set(userId, current);
  }

  let best: { ownerId: string; name: string; count: number } | null = null;
  for (const [ownerId, value] of counts) {
    if (!best || value.count > best.count) {
      best = { ownerId, name: value.name, count: value.count };
    }
  }
  if (best) {
    return { ownerId: best.ownerId, name: best.name, role: '活跃成员' };
  }

  const first = members.find((m) => m.nickname && m.nickname !== m.userId);
  if (first) {
    return { ownerId: first.userId, name: first.nickname, role: '群成员' };
  }

  return null;
}

async function syncQiWeRoomFields(obj: Parse.Object, roomId: string): Promise<void> {
  const guid = String(obj.get('guid') || ACTIVE_QIWE_GUID);
  if (!guid) return;

  const needsSync =
    !obj.get('ownerId')
    || (obj.get('memberCount') ?? 0) === 0
    || isPlaceholderRoomName(String(obj.get('roomName') || ''));
  if (!needsSync) return;

  try {
    const details = await batchGetRoomDetails(guid, [roomId]);
    const detail = details[0];
    if (!detail) return;
    if (detail.roomName) obj.set('roomName', detail.roomName);
    if (detail.ownerId) obj.set('ownerId', detail.ownerId);
    if (detail.memberCount > 0) obj.set('memberCount', detail.memberCount);
  } catch (err: unknown) {
    const message = err instanceof Error ? err.message : String(err);
    console.warn(`[GroupChat] 详情补全企微字段失败 roomId=${roomId}: ${message}`);
  }
}

function pickBestGroupObject(rows: Parse.Object[], lifecycleMap: Map<string, LifecyclePhase>): Parse.Object {
  const dtos = rows.map((obj) => toListDto(obj, lifecycleMap));
  const [bestDto] = dedupeGroupsByRoomId(dtos);
  return rows.find((row) => row.id === bestDto?.id) || rows[0];
}

const ACTIVE_QIWE_GUID = process.env.QIWE_GUID || '';

function scoreGroupForDedupe(g: GroupChatDto): number {
  let score = 0;
  if (g.guid === ACTIVE_QIWE_GUID) score += 100;
  if (g.messageCountTotal > 0) score += 50 + Math.min(g.messageCountTotal, 1000);
  if (g.roomName && !g.roomName.startsWith('群 ')) score += 20;
  if (g.memberCount > 0) score += 10;
  return score;
}

/** 同一 roomId 可能有多条记录（不同 guid / 来源），保留信息最完整的一条 */
function dedupeGroupsByRoomId(groups: GroupChatDto[]): GroupChatDto[] {
  const map = new Map<string, GroupChatDto>();
  for (const g of groups) {
    if (!g.roomId) continue;
    const existing = map.get(g.roomId);
    if (!existing || scoreGroupForDedupe(g) > scoreGroupForDedupe(existing)) {
      map.set(g.roomId, g);
    }
  }
  return [...map.values()];
}

function isPlaceholderRoomName(name: string): boolean {
  return !name || name === '未命名群' || /^群 \d{6}$/.test(name);
}

/** 向企微拉取真实群名，替换「群 500656」类占位名 */
export async function enrichPlaceholderGroupNames(guid: string, batchSize = 30): Promise<number> {
  if (!guid) return 0;

  const query = new Parse.Query('GroupChat');
  query.equalTo('guid', guid);
  query.limit(200);
  const groups = await query.find({ useMasterKey: true });
  const targets = groups.filter((g) => isPlaceholderRoomName(String(g.get('roomName') || '')));
  if (targets.length === 0) return 0;

  const roomIds = targets.slice(0, batchSize).map((g) => String(g.get('roomId')));
  let details: Awaited<ReturnType<typeof batchGetRoomDetails>>;
  try {
    details = await batchGetRoomDetails(guid, roomIds);
  } catch (err: unknown) {
    const message = err instanceof Error ? err.message : String(err);
    console.warn(`[GroupChat] 拉取群详情失败: ${message}`);
    return 0;
  }

  const detailMap = new Map(details.map((d) => [d.roomId, d]));
  let updated = 0;
  for (const obj of targets) {
    const roomId = String(obj.get('roomId'));
    const detail = detailMap.get(roomId);
    if (!detail?.roomName) continue;
    obj.set('roomName', detail.roomName);
    if (detail.memberCount > 0) obj.set('memberCount', detail.memberCount);
    if (detail.ownerId) obj.set('ownerId', detail.ownerId);
    await obj.save(null, { useMasterKey: true });
    updated++;
  }
  if (updated > 0) {
    console.log(`[GroupChat] 已补全 ${updated} 个群的真实名称`);
  }
  return updated;
}

let lastPrepareAt = 0;
const PREPARE_TTL_MS = 10 * 60 * 1000;

/**
 * 列表展示前对齐群目录：从 Message 表补全有消息但未入列表的群。
 * 带 TTL 缓存，避免每次打开列表都扫库/调企微。
 */
export async function prepareGroupListForDisplay(force = false): Promise<number> {
  if (!ACTIVE_QIWE_GUID) return 0;
  if (!force && Date.now() - lastPrepareAt < PREPARE_TTL_MS) return 0;
  lastPrepareAt = Date.now();
  const created = await backfillGroupChatsFromMessages(ACTIVE_QIWE_GUID);
  await enrichPlaceholderGroupNames(ACTIVE_QIWE_GUID);
  return created;
}

/** 同步后批量刷新群指标（写库），不在列表读取路径调用 */
export async function refreshAllGroupMetrics(limit = 200): Promise<number> {
  const query = new Parse.Query('GroupChat');
  query.limit(limit);
  const groups = await query.find({ useMasterKey: true });
  const lifecycleMap = await getCommunityLifecycleMap();
  await Promise.all(groups.map((obj) => enrichGroup(obj, lifecycleMap)));
  return groups.length;
}

export async function listGroupChats(
  filters: GroupListFilters = {},
  limit = 500,
): Promise<GroupChatDto[]> {
  const query = new Parse.Query('GroupChat');
  query.descending('messageCountTotal');
  query.addDescending('updatedAt');

  if (filters.storeId) query.equalTo('storeId', filters.storeId);
  if (filters.activityLevel) query.equalTo('activityLevel', filters.activityLevel);
  if (filters.healthStatus) query.equalTo('healthStatus', filters.healthStatus);
  if (filters.healthGrade) query.equalTo('healthGrade', filters.healthGrade);
  if (filters.lifecyclePhase) query.equalTo('lifecyclePhase', filters.lifecyclePhase);
  if (filters.hasDocument !== undefined) query.equalTo('hasDocument', filters.hasDocument);

  query.limit(limit);
  const [results, lifecycleMap] = await Promise.all([
    query.find({ useMasterKey: true }),
    getCommunityLifecycleMap(),
  ]);

  const enriched = results.map((obj) => toListDto(obj, lifecycleMap));

  let filtered = enriched;
  if (filters.lifecyclePhase) {
    filtered = filtered.filter((g) => g.lifecyclePhase === filters.lifecyclePhase);
  }
  if (filters.healthGrade) {
    filtered = filtered.filter((g) => g.healthGrade === filters.healthGrade);
  }

  if (!filters.q) {
    return dedupeGroupsByRoomId(filtered).sort((a, b) => b.messageCountTotal - a.messageCountTotal);
  }

  const q = filters.q.toLowerCase();
  return dedupeGroupsByRoomId(filtered.filter((g) =>
    g.roomName.toLowerCase().includes(q)
    || g.ownerName.toLowerCase().includes(q)
    || g.communityName.toLowerCase().includes(q)
    || g.storeName.toLowerCase().includes(q)
    || g.roomId.includes(q),
  ));
}

export async function getGroupChatByRoomId(roomId: string): Promise<GroupChatDto | null> {
  const query = new Parse.Query('GroupChat');
  query.equalTo('roomId', roomId);
  query.limit(20);
  const [rows, lifecycleMap] = await Promise.all([
    query.find({ useMasterKey: true }),
    getCommunityLifecycleMap(),
  ]);
  if (rows.length === 0) return null;

  const obj = pickBestGroupObject(rows, lifecycleMap);
  const needsQiWe =
    !obj.get('ownerId')
    || (obj.get('memberCount') ?? 0) === 0
    || isPlaceholderRoomName(String(obj.get('roomName') || ''));

  let membersLoaded: GroupMemberDto[] | null = null;

  await Promise.all([
    needsQiWe ? syncQiWeRoomFields(obj, roomId) : Promise.resolve(),
    !obj.get('ownerId') ? borrowOwnerFromSiblingRows(obj, roomId) : Promise.resolve(),
    !obj.get('storeId') ? ensureOrganizationFields(obj) : Promise.resolve(),
  ]);

  const needsMembers = (obj.get('memberCount') ?? 0) === 0 || !obj.get('ownerId');
  if (needsMembers) {
    if ((obj.get('memberCount') ?? 0) === 0) {
      const memberCount = await countActiveMembers(roomId);
      if (memberCount > 0) obj.set('memberCount', memberCount);
    }

    if ((obj.get('memberCount') ?? 0) === 0 || !obj.get('ownerId')) {
      const membersResult = await listGroupMembersByRoom(roomId, false, false);
      membersLoaded = membersResult.members;
      if (membersResult.total > 0 && (obj.get('memberCount') ?? 0) === 0) {
        obj.set('memberCount', membersResult.total);
      }
    }
  }

  if (!obj.get('ownerId')) {
    if (!membersLoaded) {
      const membersResult = await listGroupMembersByRoom(roomId, false, false);
      membersLoaded = membersResult.members;
      if (membersResult.total > 0 && (obj.get('memberCount') ?? 0) === 0) {
        obj.set('memberCount', membersResult.total);
      }
    }
    const inferred = membersLoaded ? await inferOwnerFromMembers(roomId, membersLoaded) : null;
    if (inferred) {
      obj.set('ownerId', inferred.ownerId);
      obj.set('ownerName', inferred.name);
      obj.set('ownerRole', inferred.role);
    }
  }

  const ownerId = String(obj.get('ownerId') || '');
  let owner = obj.get('ownerName')
    ? { name: String(obj.get('ownerName')), role: String(obj.get('ownerRole') || '群主') }
    : await resolveOwnerProfile(ownerId);

  if (ownerId && (!owner.name || owner.name === ownerId)) {
    if (!membersLoaded) {
      const membersResult = await listGroupMembersByRoom(roomId, false, false);
      membersLoaded = membersResult.members;
    }
    const member = membersLoaded?.find((m) => m.userId === ownerId);
    if (member?.nickname && member.nickname !== ownerId) {
      owner = { ...owner, name: member.nickname };
    }
  }

  if (owner.name) obj.set('ownerName', owner.name);
  if (owner.role) obj.set('ownerRole', owner.role);

  const dto = await enrichGroupForRead(obj, lifecycleMap);
  return {
    ...dto,
    createdAt: (obj.get('createdAt') as Date)?.toISOString?.() || dto.updatedAt,
    ownerRole: owner.role || dto.ownerRole || '群主',
  };
}

export async function migrateGroupBusinessFields(): Promise<void> {
  const query = new Parse.Query('GroupChat');
  query.limit(1000);
  const groups = await query.find({ useMasterKey: true });

  let migrated = 0;
  for (const group of groups) {
    let changed = false;

    if (group.get('hasDocument') === undefined) {
      group.set('hasDocument', false);
      changed = true;
    }
    if (group.get('documentPinned') === undefined) {
      group.set('documentPinned', false);
      changed = true;
    }
    if (group.get('documentInNotice') === undefined) {
      group.set('documentInNotice', false);
      changed = true;
    }
    if (group.get('memberChange24h') === undefined) {
      group.set('memberChange24h', 0);
      changed = true;
    }

    if (changed) {
      await group.save(null, { useMasterKey: true });
      migrated++;
    }
  }

  if (migrated > 0) {
    console.log(`[Organization] 已补全 ${migrated} 个群的基础字段`);
  }
}

/** 清除历史上自动填入的占位门店/小区数据（无真实业务归属时应为空） */
export async function clearPlaceholderOrganizationFields(): Promise<void> {
  const query = new Parse.Query('GroupChat');
  query.limit(1000);
  const groups = await query.find({ useMasterKey: true });

  let cleared = 0;
  for (const group of groups) {
    const hasStore = group.get('storeId') || group.get('storeName');
    const hasCommunity = group.get('communityId') || group.get('communityName');
    if (!hasStore && !hasCommunity) continue;

    group.unset('storeId');
    group.unset('storeName');
    group.unset('communityId');
    group.unset('communityName');
    await group.save(null, { useMasterKey: true });
    cleared++;
  }

  if (cleared > 0) {
    console.log(`[Organization] 已清除 ${cleared} 个群的占位门店/小区数据`);
  }
}

export function initNewGroupDefaults(obj: Parse.Object): void {
  if (obj.get('hasDocument') === undefined) obj.set('hasDocument', false);
  if (obj.get('documentPinned') === undefined) obj.set('documentPinned', false);
  if (obj.get('documentInNotice') === undefined) obj.set('documentInNotice', false);
  if (obj.get('memberChange24h') === undefined) obj.set('memberChange24h', 0);
}