import { Request, Response } from 'express';
import { CaptchaService } from '../services/captchaService';

/**
 * 验证码控制器
 * 处理验证码的生成和验证
 */
export class CaptchaController {
  private captchaService: CaptchaService;

  constructor() {
    this.captchaService = new CaptchaService();
  }

  /**
   * 生成验证码
   * @param req - Express请求对象
   * @param res - Express响应对象
   */
  async generateCaptcha(req: Request, res: Response) {
    try {
      const { captchaId, svg } = this.captchaService.generateCaptcha();

      return res.json({
        success: true,
        data: {
          captchaId,
          svg
        }
      });
    } catch (error) {
      console.error('生成验证码失败:', error);
      return res.status(500).json({
        success: false,
        message: '生成验证码失败'
      });
    }
  }

  /**
   * 验证验证码
   * @param req - Express请求对象
   * @param res - Express响应对象
   */
  async verifyCaptcha(req: Request, res: Response) {
    try {
      const { captchaId, code } = req.body;

      const result = this.captchaService.verifyCaptcha(captchaId, code);

      if (!result.success) {
        return res.status(400).json(result);
      }

      return res.json({
        success: true,
        message: '验证码正确'
      });
    } catch (error) {
      console.error('验证验证码失败:', error);
      return res.status(500).json({
        success: false,
        message: '服务器内部错误'
      });
    }
  }

  /**
   * 检查验证码是否启用
   * @param req - Express请求对象
   * @param res - Express响应对象
   */
  async checkCaptchaEnabled(req: Request, res: Response) {
    try {
      const enabled = await this.captchaService.checkCaptchaEnabled();

      return res.json({
        success: true,
        data: { enabled }
      });
    } catch (error) {
      console.error('检查验证码状态失败:', error);
      return res.status(500).json({
        success: false,
        message: '服务器内部错误'
      });
    }
  }
}