// routes/healthRoutes.js
const express = require('express');
const router = express.Router();

// 헬스체크 엔드포인트
router.get('/', (req, res) => {
  res.json({
    status: 'healthy',
    service: 'Technical Korea API',
    timestamp: new Date().toISOString(),
    uptime: process.uptime()
  });
});

// 상세 헬스체크 (옵션)
router.get('/detail', (req, res) => {
  res.json({
    status: 'healthy',
    service: 'Technical Korea API',
    version: '2.1.0',
    timestamp: new Date().toISOString(),
    uptime: process.uptime(),
    memory: process.memoryUsage(),
    environment: process.env.NODE_ENV || 'development'
  });
});

// 임시 마이그레이션 엔드포인트 - TBM work_type_id 수정
// 실행 후 이 코드를 삭제하세요!
router.post('/migrate-work-type-id', async (req, res) => {
  try {
    const { getDb } = require('../dbPool');
    const db = await getDb();

    console.log('🔄 TBM 기반 작업보고서 work_type_id 수정 시작...');

    // 1. 수정 대상 확인
    const [checkResult] = await db.query(`
      SELECT
        dwr.id,
        dwr.work_type_id as current_work_type_id,
        ta.task_id as correct_task_id,
        w.worker_name,
        dwr.report_date
      FROM daily_work_reports dwr
      INNER JOIN tbm_team_assignments ta ON dwr.tbm_assignment_id = ta.assignment_id
      INNER JOIN workers w ON dwr.worker_id = w.worker_id
      WHERE dwr.tbm_assignment_id IS NOT NULL
        AND ta.task_id IS NOT NULL
        AND dwr.work_type_id != ta.task_id
      ORDER BY dwr.report_date DESC
    `);

    console.log(`📊 수정 대상: ${checkResult.length}개 레코드`);

    if (checkResult.length === 0) {
      return res.json({
        success: true,
        message: '수정할 데이터가 없습니다.',
        data: { affected_rows: 0 }
      });
    }

    // 수정 전 샘플 로깅
    console.log('수정 전 샘플:', checkResult.slice(0, 5));

    // 2. 업데이트 실행
    const [updateResult] = await db.query(`
      UPDATE daily_work_reports dwr
      INNER JOIN tbm_team_assignments ta ON dwr.tbm_assignment_id = ta.assignment_id
      SET dwr.work_type_id = ta.task_id
      WHERE dwr.tbm_assignment_id IS NOT NULL
        AND ta.task_id IS NOT NULL
        AND dwr.work_type_id != ta.task_id
    `);

    console.log(`✅ 업데이트 완료: ${updateResult.affectedRows}개 레코드 수정됨`);

    // 3. 수정 후 확인
    const [samples] = await db.query(`
      SELECT
        dwr.id,
        dwr.work_type_id,
        t.task_name,
        wt.name as work_type_name,
        w.worker_name,
        dwr.report_date
      FROM daily_work_reports dwr
      INNER JOIN tbm_team_assignments ta ON dwr.tbm_assignment_id = ta.assignment_id
      LEFT JOIN tasks t ON dwr.work_type_id = t.task_id
      LEFT JOIN work_types wt ON t.work_type_id = wt.id
      LEFT JOIN workers w ON dwr.worker_id = w.worker_id
      WHERE dwr.tbm_assignment_id IS NOT NULL
      ORDER BY dwr.report_date DESC
      LIMIT 10
    `);

    res.json({
      success: true,
      message: `${updateResult.affectedRows}개 레코드가 수정되었습니다.`,
      data: {
        affected_rows: updateResult.affectedRows,
        before_count: checkResult.length,
        samples: samples.map(s => ({
          id: s.id,
          worker: s.worker_name,
          date: s.report_date,
          task: s.task_name,
          work_type: s.work_type_name
        }))
      }
    });

  } catch (error) {
    console.error('마이그레이션 실패:', error);
    res.status(500).json({
      success: false,
      error: '마이그레이션 실패: ' + error.message
    });
  }
});

module.exports = router;