#!/usr/bin/env node
/**
 * 唐用户（103）legacy 任务 → h5_tasks 回填 + 对账
 *
 * 用法:
 *   node scripts/migrate-tang-unified-tasks-103.mjs
 *   node scripts/migrate-tang-unified-tasks-103.mjs --apply
 */
import process from 'node:process';
import mysql from 'mysql2/promise';
import { initSchema } from '../db.mjs';
import { createTaskUnifiedService, formatUnifiedTaskListReply } from '../task-unified-service.mjs';
import { loadH5Environment } from './load-env.mjs';

loadH5Environment(import.meta.dirname);

const TANG = 'a70ff537-8908-486e-9b6c-042e07cc25db';

async function main() {
  const apply = process.argv.includes('--apply');
  if (!process.env.DATABASE_URL) {
    console.error('缺少 DATABASE_URL');
    process.exit(1);
  }

  const pool = mysql.createPool({ uri: process.env.DATABASE_URL, connectionLimit: 2 });
  await initSchema(pool);
  const service = createTaskUnifiedService(pool);

  const before = await service.listUserTasks({ userId: TANG, limit: 20 });
  const migration = await service.migrateLegacyTasks({ userId: TANG, dryRun: !apply });
  const after = apply
    ? await service.listUserTasks({ userId: TANG, limit: 20 })
    : before;

  const [storedCountRows] = await pool.query(
    `SELECT COUNT(*) AS cnt FROM h5_tasks WHERE user_id = ? AND status = 'active'`,
    [TANG],
  );

  console.log(JSON.stringify({
    userId: TANG,
    apply,
    migration,
    storedActiveCount: Number(storedCountRows?.[0]?.cnt ?? 0),
    unifiedListPreview: formatUnifiedTaskListReply(after).split('\n').slice(0, 12),
    tasks: after.map((task) => ({
      type: task.type,
      title: task.title,
      legacyRef: task.legacyRef,
      nextRunAt: task.nextRunAt,
    })),
  }, null, 2));

  await pool.end();
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});