import 'package:equatable/equatable.dart';
import 'package:finlytic_app/features/calendar/models/corporate_event_model.dart';

abstract class CalendarState extends Equatable {
  const CalendarState();

  @override
  List<Object?> get props => [];
}

class CalendarInitial extends CalendarState {}

class CalendarLoading extends CalendarState {}

class CalendarLoaded extends CalendarState {
  final List<CorporateEventModel> allEvents;
  final String selectedCategory;
  final DateTime currentMonth;
  final DateTime? selectedDate;

  const CalendarLoaded({
    required this.allEvents,
    this.selectedCategory = 'Alle',
    required this.currentMonth,
    this.selectedDate,
  });

  static bool matchesCategory(String eventType, String category) {
    if (category == 'Alle' || category.isEmpty) return true;
    final catKey = category.toLowerCase();
    final t = eventType.toLowerCase();

    if (catKey.contains('earn') || catKey.contains('quartal') || catKey.contains('ergebnis')) {
      return t.contains('earn') || t.contains('quart') || t.contains('ergebnis') || t.contains('finan') || t.contains('report') || t.contains('bilanz') || t == 'event';
    }
    if (catKey.contains('ex') || catKey.contains('div')) {
      return (t.contains('ex') || t.contains('div') || t.contains('ausschütt')) && !t.contains('pay') && !t.contains('zahl');
    }
    if (catKey.contains('pay') || catKey.contains('zahl')) {
      return t.contains('pay') || t.contains('zahl') || t.contains('auszahl');
    }
    if (catKey.contains('split')) {
      return t.contains('split');
    }
    return t.contains(catKey) || t == catKey;
  }

  List<CorporateEventModel> get filteredEvents {
    return allEvents.where((e) {
      if (!matchesCategory(e.eventType, selectedCategory)) {
        return false;
      }
      if (selectedDate != null) {
        if (e.eventDate.year != selectedDate!.year ||
            e.eventDate.month != selectedDate!.month ||
            e.eventDate.day != selectedDate!.day) {
          return false;
        }
      }
      return true;
    }).toList();
  }

  CalendarLoaded copyWith({
    List<CorporateEventModel>? allEvents,
    String? selectedCategory,
    DateTime? currentMonth,
    DateTime? selectedDate,
    bool clearSelectedDate = false,
  }) {
    return CalendarLoaded(
      allEvents: allEvents ?? this.allEvents,
      selectedCategory: selectedCategory ?? this.selectedCategory,
      currentMonth: currentMonth ?? this.currentMonth,
      selectedDate: clearSelectedDate ? null : (selectedDate ?? this.selectedDate),
    );
  }

  @override
  List<Object?> get props => [allEvents, selectedCategory, currentMonth, selectedDate];
}

class CalendarError extends CalendarState {
  final String message;

  const CalendarError(this.message);

  @override
  List<Object?> get props => [message];
}