const express = require('express');
const router = express.Router();
const { executeQuery } = require('../config/database');

router.get('/', async (req, res) => {
  try {
    const { search, toolsName, status, page = 1, pageSize = 10 } = req.query;
    const offset = (page - 1) * pageSize;

    let sql = `
      SELECT search_task_id, tools_name, tools_function_name, tools_function_desc,
             status, fail_reason, create_time, update_time
      FROM tools_info_search_task
    `;
    let params = [];
    let whereConditions = [];

    // 添加工具名称搜索条件
    if (toolsName) {
      whereConditions.push('tools_name LIKE ?');
      params.push(`%${toolsName}%`);
    }

    // 添加状态搜索条件
    if (status !== undefined && status !== '') {
      whereConditions.push('status = ?');
      params.push(parseInt(status));
    }

    // 添加全文搜索条件
    if (search) {
      whereConditions.push('(tools_name LIKE ? OR tools_function_name LIKE ? OR tools_function_desc LIKE ?)');
      params.push(`%${search}%`, `%${search}%`, `%${search}%`);
    }

    // 构建WHERE子句
    if (whereConditions.length > 0) {
      sql += ` WHERE ${whereConditions.join(' AND ')}`;
    }

    sql += ` ORDER BY create_time DESC LIMIT ? OFFSET ?`;
    params.push(parseInt(pageSize), offset);

    // 构建计数查询
    let countSql = `SELECT COUNT(*) as total FROM tools_info_search_task`;
    let countParams = [];

    if (whereConditions.length > 0) {
      countSql += ` WHERE ${whereConditions.join(' AND ')}`;
      // 重新构建计数查询的参数
      if (toolsName) {
        countParams.push(`%${toolsName}%`);
      }
      if (status !== undefined && status !== '') {
        countParams.push(parseInt(status));
      }
      if (search) {
        countParams.push(`%${search}%`, `%${search}%`, `%${search}%`);
      }
    }

    const [data, countResult] = await Promise.all([
      executeQuery(sql, params),
      executeQuery(countSql, countParams)
    ]);

    res.json({
      data,
      total: countResult[0].total,
      page: parseInt(page),
      pageSize: parseInt(pageSize)
    });
  } catch (error) {
    console.error('Error fetching pending tools:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

// 新增待接入工具
router.post('/', async (req, res) => {
  try {
    const {
      search_task_id,
      tools_name,
      tools_function_name,
      tools_function_desc,
      status = 0
    } = req.body;

    // 验证必填字段
    if (!search_task_id || !tools_name || !tools_function_name || !tools_function_desc) {
      return res.status(400).json({
        success: false,
        message: '缺少必填字段'
      });
    }

    // 检查search_task_id是否已存在
    const checkSql = 'SELECT search_task_id FROM tools_info_search_task WHERE search_task_id = ?';
    const existingTool = await executeQuery(checkSql, [search_task_id]);
    
    if (existingTool.length > 0) {
      return res.status(400).json({
        success: false,
        message: '工具ID已存在'
      });
    }

    // 插入新记录
    const insertSql = `
      INSERT INTO tools_info_search_task 
      (search_task_id, tools_name, tools_function_name, tools_function_desc, status, create_time, update_time)
      VALUES (?, ?, ?, ?, ?, NOW(), NOW())
    `;
    
    const result = await executeQuery(insertSql, [
      search_task_id,
      tools_name,
      tools_function_name,
      tools_function_desc,
      status
    ]);

    res.json({
      success: true,
      message: '新增工具成功',
      data: {
        search_task_id,
        tools_name,
        tools_function_name,
        tools_function_desc,
        status
      }
    });
  } catch (error) {
    console.error('新增工具失败:', error);
    res.status(500).json({
      success: false,
      message: '服务器内部错误'
    });
  }
});

router.get('/:id', async (req, res) => {
  try {
    const { id } = req.params;

    const taskSql = `
      SELECT search_task_id, tools_name, tools_function_name, tools_function_desc,
             status, fail_reason, create_time, update_time
      FROM tools_info_search_task
      WHERE search_task_id = ?
    `;

    const detailSql = `
      SELECT search_task_id, search_channel, search_result, fail_reason,
             create_time, update_time
      FROM tools_info_search_task_detail
      WHERE search_task_id = ?
    `;

    const [taskData, detailData] = await Promise.all([
      executeQuery(taskSql, [id]),
      executeQuery(detailSql, [id])
    ]);

    if (taskData.length === 0) {
      return res.status(404).json({ error: 'Tool not found' });
    }

    res.json({
      task: taskData[0],
      detail: detailData[0] || null
    });
  } catch (error) {
    console.error('Error fetching pending tool detail:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

router.put('/:id', async (req, res) => {
  try {
    const { id } = req.params;
    const { tools_name, tools_function_name, tools_function_desc, status, fail_reason } = req.body;

    const sql = `
      UPDATE tools_info_search_task
      SET tools_name = ?, tools_function_name = ?, tools_function_desc = ?,
          status = ?, fail_reason = ?, update_time = NOW()
      WHERE search_task_id = ?
    `;

    await executeQuery(sql, [tools_name, tools_function_name, tools_function_desc, status, fail_reason, id]);

    res.json({ message: 'Tool updated successfully' });
  } catch (error) {
    console.error('Error updating pending tool:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

router.delete('/:id', async (req, res) => {
  try {
    const { id } = req.params;

    await executeQuery('DELETE FROM tools_info_search_task_detail WHERE search_task_id = ?', [id]);
    await executeQuery('DELETE FROM tools_info_search_task WHERE search_task_id = ?', [id]);

    res.json({ message: 'Tool deleted successfully' });
  } catch (error) {
    console.error('Error deleting pending tool:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

module.exports = router;