import { Request, Response, NextFunction } from 'express';
import { ClassEnrollmentService } from '../services/classEnrollment.service';
import { ApiError } from '../middleware/errorHandler';

export class ClassEnrollmentController {
  // Inscribirse en una clase
  static async enrollInClass(req: Request, res: Response, next: NextFunction) {
    try {
      const userId = req.user!.userId;
      const result = await ClassEnrollmentService.enrollInClass(userId, req.body);

      res.status(201).json({
        success: true,
        message: 'Inscripción creada exitosamente',
        data: result,
      });
    } catch (error) {
      next(error);
    }
  }

  // Webhook de MercadoPago
  static async webhook(req: Request, res: Response, next: NextFunction) {
    try {
      // Responder inmediatamente a MP
      res.status(200).send('OK');

      // Procesar el webhook de forma asíncrona
      await ClassEnrollmentService.processPaymentWebhook(req.body);
    } catch (error) {
      // Loggear error pero no enviar respuesta (ya se envió 200)
      console.error('Error procesando webhook:', error);
    }
  }

  // Cancelar inscripción
  static async cancelEnrollment(req: Request, res: Response, next: NextFunction) {
    try {
      const userId = req.user!.userId;
      const { id } = req.params;
      const result = await ClassEnrollmentService.cancelEnrollment(userId, id);

      res.status(200).json({
        success: true,
        message: result.message,
      });
    } catch (error) {
      next(error);
    }
  }

  // Obtener mis inscripciones
  static async getMyEnrollments(req: Request, res: Response, next: NextFunction) {
    try {
      const userId = req.user!.userId;
      const status = req.query.status as string | undefined;
      const enrollments = await ClassEnrollmentService.getMyEnrollments(userId, status);

      res.status(200).json({
        success: true,
        count: enrollments.length,
        data: enrollments,
      });
    } catch (error) {
      next(error);
    }
  }

  // Obtener inscripción por ID
  static async getEnrollmentById(req: Request, res: Response, next: NextFunction) {
    try {
      const userId = req.user!.userId;
      const { id } = req.params;
      const enrollment = await ClassEnrollmentService.getEnrollmentById(id, userId);

      res.status(200).json({
        success: true,
        data: enrollment,
      });
    } catch (error) {
      next(error);
    }
  }

  // Marcar asistencia (solo coach)
  static async markAttendance(req: Request, res: Response, next: NextFunction) {
    try {
      const userId = req.user!.userId;
      const { id } = req.params;
      const enrollment = await ClassEnrollmentService.markAttendance(id, userId);

      res.status(200).json({
        success: true,
        message: 'Asistencia marcada exitosamente',
        data: enrollment,
      });
    } catch (error) {
      next(error);
    }
  }
}

export default ClassEnrollmentController;