const express = require('express');
const db = require('../db-sqlite');
const { authenticate } = require('../middleware/auth');

module.exports = function(app) {
  const router = express.Router();

  router.get('/', authenticate, async (req, res) => {
    try {
      const reimbursementsResult = await db.query('SELECT id, user_id, project_id, amount, description, status, created_at, updated_at FROM reimbursements');
      const reimbursements = reimbursementsResult.rows;
      res.json({ success: true, data: reimbursements, count: reimbursements.length });
    } catch (error) {
      console.error('获取报销列表失败:', error);
      res.status(500).json({ success: false, message: '获取报销列表失败' });
    }
  });

  router.get('/:id', authenticate, async (req, res) => {
    try {
      const { id } = req.params;
      const reimbursementResult = await db.query('SELECT id, user_id, project_id, amount, description, status, created_at, updated_at FROM reimbursements WHERE id = ?', [id]);
      
      if (reimbursementResult.rows.length === 0) {
        return res.status(404).json({ success: false, message: '报销不存在' });
      }
      
      const reimbursement = reimbursementResult.rows[0];
      res.json({ success: true, data: reimbursement });
    } catch (error) {
      console.error('获取报销详情失败:', error);
      res.status(500).json({ success: false, message: '获取报销详情失败' });
    }
  });

  router.post('/', authenticate, async (req, res) => {
    try {
      const { user_id, project_id, amount, description } = req.body;
      
      if (!user_id || !project_id || !amount) {
        return res.status(400).json({ success: false, 
          message: '用户ID、项目ID和金额为必填项' });
      }
      
      const result = await db.query(
        'INSERT INTO reimbursements (user_id, project_id, amount, description, status, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)',
        [user_id, project_id, amount, description || '', 'pending']
      );
      
      const newReimbursementResult = await db.query('SELECT id, user_id, project_id, amount, description, status, created_at, updated_at FROM reimbursements WHERE id = ?', [result.lastID]);
      const newReimbursement = newReimbursementResult.rows[0];
      
      console.log(`报销创建成功，由 ${req.user.username} 操作`);
      res.json({ success: true, data: newReimbursement });
    } catch (error) {
      console.error('创建报销失败:', error);
      res.status(500).json({ success: false, message: '创建报销失败' });
    }
  });

  app.use('/api/reimbursements', router);
};