/**
 * 删除 GroupChat 表中前端不再读取的死字段
 *
 * - lastActivityAt: 前端完全不读，后端已停止写入
 * - avatarUrl:      前端完全不读，后端已停止写入（企微头像 URL 无用）
 * - ownerName:      前端从 ResponsibilityAssignment 读取负责人，不再读此字段
 *
 * 保留字段说明:
 * - status:         仅群解散 webhook 写入 'dismissed'，前端用于判定健康分（不删）
 * - messageCountToday / messageCountTotal / memberCount: 前端暂时仍读取，后续改为纯计算后再删
 *
 * 用法: cd backend && npx tsx scripts/cleanup-groupchat-dead-fields.ts
 */
import 'dotenv/config';
import Parse from '../src/db/parse-client.js';

const DEAD_FIELDS = ['lastActivityAt', 'avatarUrl', 'ownerName', 'memberCount', 'messageCountToday', 'messageCountTotal'];

async function main(): Promise<void> {
  console.log('=== 清理 GroupChat 死字段 ===\n');

  const schemas = await Parse.Schema.all({ useMasterKey: true });
  const groupChat = schemas.find((s: any) => s.className === 'GroupChat');

  if (!groupChat) {
    console.error('❌ GroupChat 表不存在');
    process.exit(1);
  }

  const existingFields = Object.keys(groupChat.fields).filter((k: string) => !k.startsWith('_'));
  console.log(`当前 GroupChat 字段: ${existingFields.join(', ')}\n`);

  const deletable = DEAD_FIELDS.filter(f => existingFields.includes(f));

  if (deletable.length === 0) {
    console.log('目标字段均已不存在，无需操作');
    return;
  }

  console.log(`准备删除: ${deletable.join(', ')}\n`);

  const schema = new Parse.Schema('GroupChat');
  for (const field of deletable) {
    schema.deleteField(field);
    console.log(`  ✅ 已标记删除: ${field}`);
  }
  await schema.update({ useMasterKey: true });

  // 验证
  console.log('\n--- 验证 ---');
  const afterSchemas = await Parse.Schema.all({ useMasterKey: true });
  const after = afterSchemas.find((s: any) => s.className === 'GroupChat');
  if (after) {
    const remaining = Object.keys(after.fields).filter((k: string) => !k.startsWith('_')).sort();
    const stillThere = deletable.filter(f => remaining.includes(f));
    if (stillThere.length > 0) {
      console.log(`❌ 残留字段: ${stillThere.join(', ')}`);
    } else {
      console.log(`✅ 全部清除成功`);
    }
    console.log(`现有字段 (${remaining.length}): ${remaining.join(', ')}`);
  }

  console.log('\n✅ 清理完成!');
}

main().catch((err) => {
  console.error('❌ 失败:', err);
  process.exit(1);
});