import {
  Controller,
  Post,
  Get,
  Param,
  Body,
  Query,
  HttpCode,
  HttpStatus,
} from '@nestjs/common';
import { ApiTags, ApiOperation, ApiBearerAuth } from '@nestjs/swagger';
import { EnrollmentService } from './enrollment.service';
import { CurrentUser } from '../auth/decorators/current-user.decorator';
import { User } from '@coursecraft/database';
import { SubmitQuizDto } from './dto/submit-quiz.dto';
import { CreateReviewDto } from './dto/create-review.dto';
import { SubmitHomeworkDto } from './dto/submit-homework.dto';

@ApiTags('enrollment')
@Controller('enrollment')
@ApiBearerAuth()
export class EnrollmentController {
  constructor(private enrollmentService: EnrollmentService) {}

  @Post(':courseId/enroll')
  @HttpCode(HttpStatus.CREATED)
  @ApiOperation({ summary: 'Enroll in a course' })
  async enroll(@Param('courseId') courseId: string, @CurrentUser() user: User): Promise<any> {
    return this.enrollmentService.enroll(user.id, courseId);
  }

  @Get()
  @ApiOperation({ summary: 'Get my enrolled courses' })
  async myEnrollments(@CurrentUser() user: User): Promise<any> {
    return this.enrollmentService.getUserEnrollments(user.id);
  }

  @Get(':courseId/progress')
  @ApiOperation({ summary: 'Get my progress for a course' })
  async getProgress(@Param('courseId') courseId: string, @CurrentUser() user: User): Promise<any> {
    return this.enrollmentService.getProgress(user.id, courseId);
  }

  @Post(':courseId/lessons/:lessonId/complete')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Mark a lesson as completed' })
  async completeLesson(
    @Param('courseId') courseId: string,
    @Param('lessonId') lessonId: string,
    @CurrentUser() user: User,
  ): Promise<any> {
    return this.enrollmentService.completeLesson(user.id, courseId, lessonId);
  }

  @Post(':courseId/lessons/:lessonId/quiz')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Submit quiz score' })
  async submitQuiz(
    @Param('courseId') courseId: string,
    @Param('lessonId') lessonId: string,
    @Body() dto: SubmitQuizDto,
    @CurrentUser() user: User,
  ): Promise<any> {
    return this.enrollmentService.submitQuiz(user.id, courseId, lessonId, dto.answers);
  }

  @Get(':courseId/lessons/:lessonId/homework')
  @ApiOperation({ summary: 'Get (or lazy-create) homework for lesson' })
  async getHomework(
    @Param('courseId') courseId: string,
    @Param('lessonId') lessonId: string,
    @CurrentUser() user: User,
  ): Promise<any> {
    return this.enrollmentService.getHomework(user.id, courseId, lessonId);
  }

  @Post(':courseId/lessons/:lessonId/homework')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Submit written homework for lesson' })
  async submitHomework(
    @Param('courseId') courseId: string,
    @Param('lessonId') lessonId: string,
    @Body() dto: SubmitHomeworkDto,
    @CurrentUser() user: User,
  ): Promise<any> {
    return this.enrollmentService.submitHomework(user.id, courseId, lessonId, dto.content);
  }

  @Post(':courseId/review')
  @HttpCode(HttpStatus.CREATED)
  @ApiOperation({ summary: 'Leave a review' })
  async createReview(
    @Param('courseId') courseId: string,
    @Body() body: CreateReviewDto,
    @CurrentUser() user: User,
  ): Promise<any> {
    return this.enrollmentService.createReview(user.id, courseId, body.rating, body.title, body.content);
  }

  @Get(':courseId/reviews')
  @ApiOperation({ summary: 'Get course reviews' })
  async getReviews(
    @Param('courseId') courseId: string,
    @Query('page') page?: number,
    @Query('limit') limit?: number,
  ): Promise<any> {
    return this.enrollmentService.getCourseReviews(courseId, page, limit);
  }
}