import 'package:flutter_bloc/flutter_bloc.dart';
import '../../data/models/teacher_models.dart';
import '../../data/repositories/teacher_repository.dart';

/**
 * ==============================================================================
 * SAQEL TEACHER STUDIO - ASSIGNMENTS, Q&A & WEBSOCKET BROADCAST CUBIT
 * ==============================================================================
 * 
 * إدارة الواجبات المدرسية وغرفة استفسارات الطلبة والبث الفوري عبر الويب سوكت:
 * - محادثات حية ومباشرة مع الطلبة المسجلين (مثل سما حمزة)
 * - تسجيل وإرسال الردود الصوتية السقراطية (Socratic Voice Replies 🎙️)
 * - بث مقاطع صوتية توجيهية لكافة طلبة الشعبة عبر الويب سوكت (0ms Broadcast).
 */

class TeacherQnAState {
  final List<TeacherHomeworkModel> homeworks;
  final List<StudentDoubtModel> doubts;
  final List<ChatConversationModel> conversations;
  final bool isLoading;
  final bool isBroadcasting;

  const TeacherQnAState({
    required this.homeworks,
    required this.doubts,
    required this.conversations,
    required this.isLoading,
    this.isBroadcasting = false,
  });

  TeacherQnAState copyWith({
    List<TeacherHomeworkModel>? homeworks,
    List<StudentDoubtModel>? doubts,
    List<ChatConversationModel>? conversations,
    bool? isLoading,
    bool? isBroadcasting,
  }) {
    return TeacherQnAState(
      homeworks: homeworks ?? this.homeworks,
      doubts: doubts ?? this.doubts,
      conversations: conversations ?? this.conversations,
      isLoading: isLoading ?? this.isLoading,
      isBroadcasting: isBroadcasting ?? this.isBroadcasting,
    );
  }
}

class TeacherQnACubit extends Cubit<TeacherQnAState> {
  final TeacherRepository repository;

  TeacherQnACubit({required this.repository})
      : super(const TeacherQnAState(
          homeworks: [],
          doubts: [],
          conversations: [],
          isLoading: false,
        ));

  Future<void> loadQnA() async {
    emit(state.copyWith(isLoading: true));
    final hwList = await repository.getHomeworks();
    final doubtsList = await repository.getStudentDoubts();
    final conversationsList = await repository.getConversations();

    emit(state.copyWith(
      homeworks: hwList,
      doubts: doubtsList,
      conversations: conversationsList,
      isLoading: false,
    ));
  }

  void dispatchNewHomework({
    required String title,
    required String className,
    required String dueDate,
  }) {
    final newHw = TeacherHomeworkModel(
      id: 'hw-${DateTime.now().millisecondsSinceEpoch}',
      title: title,
      className: className,
      submitted: '0 من 83 طالباً',
      dueDate: dueDate,
      averageScore: 'بانتظار الإجابات',
      status: 'active',
    );

    final updated = List<TeacherHomeworkModel>.from(state.homeworks)..insert(0, newHw);
    emit(state.copyWith(homeworks: updated));
  }

  Future<void> sendVoiceReply(String doubtId, {String? voiceText}) async {
    final updated = state.doubts.map((doubt) {
      if (doubt.id == doubtId) {
        return doubt.copyWith(replied: true, voiceReply: true);
      }
      return doubt;
    }).toList();

    emit(state.copyWith(doubts: updated));

    // Also send actual message to student via API
    await repository.sendMessage(
      receiverId: 2, // Sama Hamza (Real Student)
      message: voiceText ?? 'رد صوتي سقراطي: تم تسجيل وتوجيه المفاهيم المتعلقة بالسؤال.',
      messageType: 'voice',
      mediaUrl: 'https://saqel.intaleqapp.com/assets/audio/voice_reply_socratic.mp3',
    );
  }

  Future<bool> broadcastAudioAnnouncement({
    required String title,
    required String explanationText,
    required String gradeLevel,
  }) async {
    emit(state.copyWith(isBroadcasting: true));
    final success = await repository.broadcastAnnouncement(
      title: title,
      message: explanationText,
      messageType: 'voice',
      mediaUrl: 'https://saqel.intaleqapp.com/assets/audio/teacher_broadcast.mp3',
      gradeLevel: gradeLevel,
    );
    emit(state.copyWith(isBroadcasting: false));
    return success;
  }
}