/**
 * ==============================================================================
 * SAQEL TEACHER STUDIO - DATA MODELS
 * ==============================================================================
 * 
 * نماذج البيانات الخاصة باستوديو المعلم:
 * - نتائج فحص الجودة الإدراكي والأكاديمي (Quality Gate & MIT 20-25 Min Limit)
 * - بيانات التسييل المالي وحسابات الحصص (55% المعلم / 15% المديرية / 30% المنصة)
 * - أوراق العمل والواجبات المدرسية المصححة آلياً
 * - استفسارات وأسئلة الطلبة الميدانية (غرفة الشكوك) والردود السقراطية المسجلة.
 */

class TeacherLessonAuditModel {
  final String lessonTitle;
  final String subject;
  final double durationMinutes;
  final bool durationGatePassed;
  final String? durationWarning;
  final int qualityScore;
  final String approvalStatus;
  final String curriculumAlignment;
  final String audioClarity;
  final int socraticStopsCount;
  final String decision;

  const TeacherLessonAuditModel({
    required this.lessonTitle,
    required this.subject,
    required this.durationMinutes,
    required this.durationGatePassed,
    this.durationWarning,
    required this.qualityScore,
    required this.approvalStatus,
    required this.curriculumAlignment,
    required this.audioClarity,
    required this.socraticStopsCount,
    required this.decision,
  });

  factory TeacherLessonAuditModel.fromJson(Map<String, dynamic> json) {
    final durationSeconds = (json['duration_seconds'] as num?)?.toDouble() ?? 0;
    final readiness = (json['pedagogical_readiness_score'] as num?)?.toInt();
    final visual = (json['visual_clarity_score'] as num?)?.toInt();
    final decisionValue = json['decision']?.toString() ?? 'pending';

    final ai = json['ai_analysis'] is Map ? Map<String, dynamic>.from(json['ai_analysis'] as Map) : null;
    final estimatedCp = (durationSeconds / 600).clamp(1, 4).toInt();
    final cpCount = (ai?['checkpoints_count'] as num?)?.toInt() ??
        (json['socratic_stops_count'] as num?)?.toInt() ??
        (durationSeconds > 0 ? estimatedCp : 0);
    final alignScore = (qa?['alignment_score'] as num?)?.toInt() ?? readiness;

    return TeacherLessonAuditModel(
      lessonTitle: json['lesson_title'] ?? '',
      subject: json['subject'] ?? '',
      durationMinutes: (json['duration_minutes'] as num?)?.toDouble() ??
          durationSeconds / 60,
      durationGatePassed: json['duration_gate_passed'] ??
          (durationSeconds > 0 && durationSeconds <= 1500),
      durationWarning: json['duration_warning'],
      qualityScore: (qa?['clarity_score'] as num?)?.toInt() ?? (json['quality_score'] as num?)?.toInt() ?? readiness ?? 0,
      approvalStatus: qa?['status']?.toString() ?? json['approval_status'] ?? decisionValue,
      curriculumAlignment: alignScore != null
          ? 'تطابق معتمد بنسبة $alignScore% مع المنهاج الرسمي'
          : (json['curriculum_alignment'] ?? 'بانتظار تحليل الملف الفعلي'),
      audioClarity: json['audio_clarity'] ??
          (visual == null
              ? 'تم التحقق من وجود مسار صوت فعلي'
              : 'وضوح الصورة $visual%، وتم التحقق من وجود الصوت'),
      socraticStopsCount: cpCount,
      decision: json['report'] ?? json['reason'] ?? decisionValue,
    );
  }
}

class TeacherHomeworkModel {
  final String id;
  final String title;
  final String className;
  final String submitted;
  final String dueDate;
  final String averageScore;
  final String status; // 'active', 'completed'

  const TeacherHomeworkModel({
    required this.id,
    required this.title,
    required this.className,
    required this.submitted,
    required this.dueDate,
    required this.averageScore,
    required this.status,
  });
}

class StudentDoubtModel {
  final String id;
  final int studentId;
  final String studentName;
  final String className;
  final String question;
  final String time;
  final bool replied;
  final bool voiceReply;

  const StudentDoubtModel({
    required this.id,
    required this.studentId,
    required this.studentName,
    required this.className,
    required this.question,
    required this.time,
    required this.replied,
    required this.voiceReply,
  });

  StudentDoubtModel copyWith({
    bool? replied,
    bool? voiceReply,
  }) {
    return StudentDoubtModel(
      id: id,
      studentId: studentId,
      studentName: studentName,
      className: className,
      question: question,
      time: time,
      replied: replied ?? this.replied,
      voiceReply: voiceReply ?? this.voiceReply,
    );
  }
}

class TeacherCourseModel {
  final String id;
  final String title;
  final String grade;
  final int totalLessons;
  final int militaryStudents;
  final int externalSubscribers;
  final double priceJod;
  final double netRevenueJod;

  const TeacherCourseModel({
    required this.id,
    required this.title,
    required this.grade,
    required this.totalLessons,
    required this.militaryStudents,
    required this.externalSubscribers,
    required this.priceJod,
    required this.netRevenueJod,
  });
}

class TeacherPayoutRequestModel {
  final String cliqAlias;
  final double amountJod;
  final String requestedAt;
  final String status; // 'queued', 'approved', 'completed'

  const TeacherPayoutRequestModel({
    required this.cliqAlias,
    required this.amountJod,
    required this.requestedAt,
    required this.status,
  });
}

class TeacherProfileModel {
  final int id;
  final String uuid;
  final String name;
  final String specialization;
  final String schoolName;
  final List<String> gradesTaught;
  final String bio;
  final double rating;
  final int studentsCount;
  final int lessonsCount;

  const TeacherProfileModel({
    required this.id,
    required this.uuid,
    required this.name,
    required this.specialization,
    required this.schoolName,
    required this.gradesTaught,
    required this.bio,
    this.rating = 4.9,
    this.studentsCount = 42,
    this.lessonsCount = 28,
  });

  factory TeacherProfileModel.fromJson(Map<String, dynamic> json) {
    final user = json['user'] as Map<String, dynamic>? ?? {};
    final profile = json['profile'] as Map<String, dynamic>? ?? {};

    List<String> grades = [];
    if (profile['grades_taught'] is List) {
      grades =
          (profile['grades_taught'] as List).map((e) => e.toString()).toList();
    } else if (profile['grades_taught'] is String) {
      grades = [profile['grades_taught'].toString()];
    }
    if (grades.isEmpty) {
      grades = [];
    }

    return TeacherProfileModel(
      id: user['id'] is int ? user['id'] : 1,
      uuid: user['uuid']?.toString() ?? '',
      name: user['full_name']?.toString() ?? 'حساب معلم غير مكتمل',
      specialization:
          profile['specialization']?.toString() ?? 'بانتظار استكمال التخصص',
      schoolName: profile['school_name']?.toString() ?? '',
      gradesTaught: grades,
      bio: profile['bio']?.toString() ?? '',
      rating: 0,
      studentsCount: 0,
      lessonsCount: 0,
    );
  }

  TeacherProfileModel copyWith({
    String? name,
    String? specialization,
    String? schoolName,
    List<String>? gradesTaught,
    String? bio,
  }) {
    return TeacherProfileModel(
      id: id,
      uuid: uuid,
      name: name ?? this.name,
      specialization: specialization ?? this.specialization,
      schoolName: schoolName ?? this.schoolName,
      gradesTaught: gradesTaught ?? this.gradesTaught,
      bio: bio ?? this.bio,
      rating: rating,
      studentsCount: studentsCount,
      lessonsCount: lessonsCount,
    );
  }
}

class ChatConversationModel {
  final int userId;
  final String userUuid;
  final String fullName;
  final String role;
  final String? specialization;
  final String lastMessage;
  final String lastMessageType;
  final String? lastMessageAt;
  final int unreadCount;

  const ChatConversationModel({
    required this.userId,
    required this.userUuid,
    required this.fullName,
    required this.role,
    this.specialization,
    required this.lastMessage,
    required this.lastMessageType,
    this.lastMessageAt,
    this.unreadCount = 0,
  });

  factory ChatConversationModel.fromJson(Map<String, dynamic> json) {
    return ChatConversationModel(
      userId: json['user_id'] is int
          ? json['user_id']
          : int.tryParse(json['user_id']?.toString() ?? '0') ?? 0,
      userUuid: json['user_uuid']?.toString() ?? '',
      fullName: json['full_name']?.toString() ?? 'طالب صَقِل',
      role: json['role']?.toString() ?? 'student',
      specialization: json['specialization']?.toString(),
      lastMessage: json['last_message']?.toString() ?? '',
      lastMessageType: json['last_message_type']?.toString() ?? 'text',
      lastMessageAt: json['last_message_at']?.toString(),
      unreadCount: json['unread_count'] is int ? json['unread_count'] : 0,
    );
  }
}

class ChatMessageModel {
  final int id;
  final String uuid;
  final bool isMine;
  final int senderId;
  final int receiverId;
  final String message;
  final String messageType; // 'text', 'voice', 'image', 'file'
  final String? mediaUrl;
  final bool isRead;
  final String createdAt;

  const ChatMessageModel({
    required this.id,
    required this.uuid,
    required this.isMine,
    required this.senderId,
    required this.receiverId,
    required this.message,
    required this.messageType,
    this.mediaUrl,
    required this.isRead,
    required this.createdAt,
  });

  factory ChatMessageModel.fromJson(Map<String, dynamic> json) {
    return ChatMessageModel(
      id: json['id'] is int
          ? json['id']
          : int.tryParse(json['id']?.toString() ?? '0') ?? 0,
      uuid: json['uuid']?.toString() ?? '',
      isMine: json['is_mine'] ?? false,
      senderId: json['sender_id'] is int
          ? json['sender_id']
          : int.tryParse(json['sender_id']?.toString() ?? '0') ?? 0,
      receiverId: json['receiver_id'] is int
          ? json['receiver_id']
          : int.tryParse(json['receiver_id']?.toString() ?? '0') ?? 0,
      message: json['message']?.toString() ?? '',
      messageType: json['message_type']?.toString() ?? 'text',
      mediaUrl: json['media_url']?.toString(),
      isRead: json['is_read'] ?? false,
      createdAt: json['created_at']?.toString() ?? '',
    );
  }
}