const express = require('express');
const router = express.Router();
const systemMonitor = require('../utils/systemMonitor');

/**
 * @brief 启动数据监控
 * @route POST /api/data-monitor/start
 * @param {string} structName - 结构体名称
 * @returns {Object} 返回启动结果
 */
router.post('/start', async (req, res) => {
  try {
    const { structName } = req.body;
    if (!structName) {
      return res.status(400).json({ success: false, message: '结构体名称不能为空' });
    }

    const result = systemMonitor.startDataMonitor(structName);
    if (result.includes('失败')) {
      return res.status(500).json({ success: false, message: result });
    }
    res.json({ success: true, message: result });
  } catch (error) {
    res.status(500).json({ success: false, message: `启动数据监控失败: ${error.message}` });
  }
});

/**
 * @brief 停止数据监控
 * @route POST /api/data-monitor/stop
 * @param {string} structName - 结构体名称
 * @returns {Object} 返回停止结果
 */
router.post('/stop', async (req, res) => {
  try {
    const { structName } = req.body;
    if (!structName) {
      return res.status(400).json({ success: false, message: '结构体名称不能为空' });
    }

    const result = systemMonitor.stopDataMonitor(structName);
    if (result.includes('失败')) {
      return res.status(500).json({ success: false, message: result });
    }
    res.json({ success: true, message: result });
  } catch (error) {
    res.status(500).json({ success: false, message: `停止数据监控失败: ${error.message}` });
  }
});

/**
 * @brief 获取数据监控信息
 * @route GET /api/data-monitor/info
 * @param {string} structName - 结构体名称
 * @param {string} interfaceName - 接口名称
 * @param {number} [bufferSize=8192] - 数据缓冲区大小（可选）
 * @returns {Object} 返回监控信息，data字段包含解析后的JSON对象
 */
router.get('/info', async (req, res) => {
  try {
    const { structName, interfaceName, bufferSize } = req.query;
    if (!structName || !interfaceName) {
      return res.status(400).json({ 
        success: false, 
        message: '结构体名称和接口名称不能为空' 
      });
    }

    const result = systemMonitor.getDataMonitorInfo(
      structName, 
      interfaceName, 
      bufferSize ? parseInt(bufferSize) : undefined
    );
    if (typeof result === 'string' && result.includes('失败')) {
      return res.status(500).json({ success: false, message: result });
    }

    // 解析数据字符串为JSON对象
    let parsedData;
    try {
      parsedData = JSON.parse(result.data);
    } catch (parseError) {
      return res.status(500).json({ 
        success: false, 
        message: `数据解析失败: ${parseError.message}` 
      });
    }

    res.json({ 
      success: true, 
      data: parsedData,
      info: result.info 
    });
  } catch (error) {
    res.status(500).json({ success: false, message: `获取数据监控信息失败: ${error.message}` });
  }
});

/**
 * @brief 注入数据接口
 * @route POST /api/data-monitor/inject
 * @param {string} structName - 结构体名称
 * @param {string} interfaceNameAndData - 接口名称和数据JSON字符串
 * @returns {Object} 返回注入结果
 */
router.post('/inject', async (req, res) => {
  try {
    const { structName, interfaceNameAndData } = req.body;
    if (!structName || !interfaceNameAndData) {
      return res.status(400).json({ 
        success: false, 
        message: '结构体名称和接口数据不能为空' 
      });
    }

    const result = systemMonitor.injectDataInterface(structName, interfaceNameAndData);
    if (result.includes('失败')) {
      return res.status(500).json({ success: false, message: result });
    }
    res.json({ success: true, message: result });
  } catch (error) {
    res.status(500).json({ success: false, message: `注入数据接口失败: ${error.message}` });
  }
});

/**
 * @brief 启动持续注入数据
 * @route POST /api/data-monitor/start-continuous
 * @param {string} structName - 结构体名称
 * @param {string} interfaceNameAndData - 接口名称和数据JSON字符串
 * @param {number} frequency - 注入频率
 * @returns {Object} 返回启动结果
 */
router.post('/start-continuous', async (req, res) => {
  try {
    const { structName, interfaceNameAndData, frequency } = req.body;
    if (!structName || !interfaceNameAndData || frequency === undefined) {
      return res.status(400).json({ 
        success: false, 
        message: '结构体名称、接口数据和注入频率不能为空' 
      });
    }

    const result = systemMonitor.startInjectContinuous(structName, interfaceNameAndData, frequency);
    if (result.includes('失败')) {
      return res.status(500).json({ success: false, message: result });
    }
    res.json({ success: true, message: result });
  } catch (error) {
    res.status(500).json({ success: false, message: `启动持续注入数据失败: ${error.message}` });
  }
});

/**
 * @brief 停止持续注入数据
 * @route POST /api/data-monitor/stop-continuous
 * @param {string} structName - 结构体名称
 * @returns {Object} 返回停止结果
 */
router.post('/stop-continuous', async (req, res) => {
  try {
    const { structName } = req.body;
    if (!structName) {
      return res.status(400).json({ success: false, message: '结构体名称不能为空' });
    }

    const result = systemMonitor.stopInjectContinuous(structName);
    if (result.includes('失败')) {
      return res.status(500).json({ success: false, message: result });
    }
    res.json({ success: true, message: result });
  } catch (error) {
    res.status(500).json({ success: false, message: `停止持续注入数据失败: ${error.message}` });
  }
});

module.exports = router;