import { Request, Response } from 'express';
import { SystemConfigModel } from '../models';

export class AdminController {
  // 管理员登录
  static async login(req: Request, res: Response) {
    try {
      const { username, password } = req.body;
      
      if (!username || !password) {
        return res.status(400).json({
          success: false,
          message: '用户名和密码不能为空'
        });
      }
      
      const isValid = await SystemConfigModel.validateAdminLogin(username, password);
      if (!isValid) {
        return res.status(401).json({
          success: false,
          message: '用户名或密码错误'
        });
      }
      
      // 这里可以生成JWT token，简化处理直接返回成功
      res.json({
        success: true,
        message: '登录成功',
        data: {
          username,
          token: 'admin-token' // 简化处理
        }
      });
    } catch (error: any) {
      console.error('管理员登录失败:', error);
      res.status(500).json({
        success: false,
        message: error.message || '登录失败'
      });
    }
  }

  // 获取抽题配置
  static async getQuizConfig(req: Request, res: Response) {
    try {
      const config = await SystemConfigModel.getQuizConfig();
      
      res.json({
        success: true,
        data: config
      });
    } catch (error: any) {
      console.error('获取抽题配置失败:', error);
      res.status(500).json({
        success: false,
        message: error.message || '获取抽题配置失败'
      });
    }
  }

  // 更新抽题配置
  static async updateQuizConfig(req: Request, res: Response) {
    try {
      const { singleRatio, multipleRatio, judgmentRatio, textRatio, totalScore } = req.body;
      
      const config = {
        singleRatio,
        multipleRatio,
        judgmentRatio,
        textRatio,
        totalScore
      };
      
      await SystemConfigModel.updateQuizConfig(config);
      
      res.json({
        success: true,
        message: '抽题配置更新成功'
      });
    } catch (error: any) {
      console.error('更新抽题配置失败:', error);
      res.status(500).json({
        success: false,
        message: error.message || '更新抽题配置失败'
      });
    }
  }

  // 获取统计数据
  static async getStatistics(req: Request, res: Response) {
    try {
      const { QuizModel } = await import('../models');
      const statistics = await QuizModel.getStatistics();
      
      res.json({
        success: true,
        data: statistics
      });
    } catch (error: any) {
      console.error('获取统计数据失败:', error);
      res.status(500).json({
        success: false,
        message: error.message || '获取统计数据失败'
      });
    }
  }

  // 修改管理员密码
  static async updatePassword(req: Request, res: Response) {
    try {
      const { username, oldPassword, newPassword } = req.body;
      
      if (!username || !oldPassword || !newPassword) {
        return res.status(400).json({
          success: false,
          message: '参数不完整'
        });
      }
      
      // 验证旧密码
      const isValid = await SystemConfigModel.validateAdminLogin(username, oldPassword);
      if (!isValid) {
        return res.status(401).json({
          success: false,
          message: '原密码错误'
        });
      }
      
      // 更新密码
      await SystemConfigModel.updateAdminPassword(username, newPassword);
      
      res.json({
        success: true,
        message: '密码修改成功'
      });
    } catch (error: any) {
      console.error('修改密码失败:', error);
      res.status(500).json({
        success: false,
        message: error.message || '修改密码失败'
      });
    }
  }

  // 获取所有配置（管理员用）
  static async getAllConfigs(req: Request, res: Response) {
    try {
      const configs = await SystemConfigModel.getAllConfigs();
      
      res.json({
        success: true,
        data: configs
      });
    } catch (error: any) {
      console.error('获取配置失败:', error);
      res.status(500).json({
        success: false,
        message: error.message || '获取配置失败'
      });
    }
  }
}