/**
 * @file course.ts
 * @description Type definitions for courses, enrollments, quizzes, and certificates.
 */

export interface Course {
  id: number
  title: string | { th: string; en: string }
  slug: string
  description: string | { th: string; en: string }
  thumbnail_url: string
  price: string
  is_free: boolean
  original_price?: string
  have_certificate: boolean
  status: string
  category_id: number
  created_at?: string
  updated_at?: string
  created_by?: number
  updated_by?: number
  approved_at?: string
  approved_by?: number
  rejection_reason?: string
  enrolled?: boolean
  total_lessons?: number
  rating?: string
  lessons?: number | string
  levelType?: 'neutral' | 'warning' | 'success'
  chapters?: {
    id: number
    title: string | { th: string; en: string }
    lessons: {
      id: number
      title: string | { th: string; en: string }
      duration_minutes: number
      video_url?: string
    }[]
  }[]
  creator?: {
    id: number
    username: string
    email: string
    profile: {
      first_name: string
      last_name: string
      avatar_url: string
    }
  }
  instructors?: {
    user_id: number
    is_primary: boolean
    user: {
      id: number
      username: string
      email: string
      profile: {
        first_name: string
        last_name: string
        avatar_url: string
      }
    }
  }[]
}

export interface CourseResponse {
  code: number
  message: string
  data: Course[]
  total: number
  page?: number
  limit?: number
  totalPages?: number
}

export interface SingleCourseResponse {
  code: number
  message: string
  data: Course
}

export interface EnrolledCourse {
  id: number
  course_id: number
  course: Course
  status: 'ENROLLED' | 'IN_PROGRESS' | 'COMPLETED' | 'DROPPED'
  progress_percentage: number
  enrolled_at: string
  started_at?: string
  completed_at?: string
  last_accessed_at?: string
}

export interface EnrolledCourseResponse {
  code: number
  message: string
  data: EnrolledCourse[]
  total: number
  page: number
  limit: number
}

export interface QuizAnswerSubmission {
  question_id: number
  choice_id: number
}

export interface QuizSubmitRequest {
  answers: QuizAnswerSubmission[]
}

export interface QuizResult {
  answers_review: {
    score: number
    is_correct: boolean
    correct_choice_id: number
    selected_choice_id: number
    question_id: number
  }[]
  completed_at: string
  started_at: string
  attempt_number: number
  passing_score: number
  is_passed: boolean
  correct_answers: number
  total_questions: number
  total_score: number
  score: number
  quiz_id: number
  attempt_id: number
}

export interface Certificate {
  certificate_id: number
  course_id: number
  course_title: {
    en: string
    th: string
  }
  issued_at: string
  download_url: string
}