import 'package:flutter/foundation.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../../domain/usecases/get_theme_usecase.dart';
import 'theme_state.dart';

class ThemeCubit extends Cubit<ThemeState> {
  final GetThemeUseCase getThemeUseCase;

  /// Base URL for loading theme images (logo, etc.)
  static const String _imageBaseUrl = 'https://hrm.go.iq/Images/';

  /// Guard against re-entrant / duplicate calls
  bool _isLoading = false;

  ThemeCubit({required this.getThemeUseCase}) : super(const ThemeInitial());

  /// Load theme. Set [forceReload] to true after login to refresh.
  Future<void> loadTheme({bool forceReload = false}) async {
    // Prevent duplicate concurrent calls
    if (_isLoading) {
      debugPrint('[ThemeCubit] loadTheme() skipped — already loading');
      return;
    }

    // If already loaded and not forced, skip
    if (!forceReload && state is ThemeLoaded) {
      debugPrint('[ThemeCubit] loadTheme() skipped — already loaded');
      return;
    }

    _isLoading = true;
    debugPrint('[ThemeCubit] loadTheme() called (forceReload=$forceReload)');
    emit(const ThemeLoading());

    final result = await getThemeUseCase();

    _isLoading = false;

    result.fold(
      (failure) {
        debugPrint('[ThemeCubit] ❌ FAILED: ${failure.message}');
        emit(ThemeError(failure.message));
      },
      (theme) {
        debugPrint(
          '[ThemeCubit] ✅ Got theme — name: ${theme.name}, logo: ${theme.logo}',
        );
        // Build the full logo URL:  https://hrm.go.iq/Images/{filename}
        final encodedLogo = Uri.encodeFull(theme.logo);
        final logoUrl = '$_imageBaseUrl$encodedLogo';
        debugPrint('[ThemeCubit] 🖼️ Logo URL: $logoUrl');
        emit(ThemeLoaded(theme: theme, logoUrl: logoUrl));
      },
    );
  }
}