import 'package:flutter_bloc/flutter_bloc.dart';
import '../data/auth_repository.dart';
import 'auth_state.dart';

class AuthCubit extends Cubit<AuthState> {
  final AuthRepository _repo;

  AuthCubit(this._repo) : super(const AuthState());

  Future<void> checkAuth() async {
    final hasToken = await _repo.hasSavedToken();
    if (hasToken) {
      final cachedUser = await _repo.getCachedUser();
      if (cachedUser != null) {
        emit(state.copyWith(
          status: AuthStatus.authenticated,
          user: cachedUser,
        ));
      }
    }
    final user = await _repo.me();
    if (user != null) {
      emit(state.copyWith(
        status: AuthStatus.authenticated,
        user: user,
      ));
    } else {
      final hasTokenAfterMe = await _repo.hasSavedToken();
      if (!hasTokenAfterMe) {
        emit(state.copyWith(
          status: AuthStatus.unauthenticated,
          user: null,
        ));
      }
    }
  }


  Future<void> sendOtp(String phone) async {
    if (phone.trim().isEmpty) {
      emit(state.copyWith(status: AuthStatus.error, error: 'أدخل رقم الهاتف'));
      return;
    }
    try {
      emit(state.copyWith(status: AuthStatus.authenticating, phone: phone.trim()));
      await _repo.sendOtp(phone.trim());
      emit(state.copyWith(status: AuthStatus.codeSent, phone: phone.trim()));
    } catch (_) {
      emit(state.copyWith(status: AuthStatus.error, error: 'تعذّر إرسال الرمز'));
    }
  }

  Future<void> verify(String code) async {
    try {
      emit(state.copyWith(status: AuthStatus.authenticating));
      final user = await _repo.verify(state.phone, code.trim());
      emit(state.copyWith(status: AuthStatus.authenticated, user: user));
    } catch (_) {
      emit(state.copyWith(status: AuthStatus.error, error: 'رمز غير صحيح'));
    }
  }

  Future<void> logout() async {
    await _repo.logout();
    emit(const AuthState(status: AuthStatus.unauthenticated));
  }

  Future<void> updateName(String name) async {
    try {
      emit(state.copyWith(status: AuthStatus.authenticating));
      final user = await _repo.updateName(name);
      emit(state.copyWith(status: AuthStatus.authenticated, user: user));
    } catch (_) {
      emit(state.copyWith(status: AuthStatus.error, error: 'تعذّر حفظ الاسم'));
    }
  }
}