import 'package:equatable/equatable.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flux/features/services/data/services_repository.dart';
import 'package:flux/features/services/models/service_model.dart';
import 'package:get_it/get_it.dart';

class ServicesState extends Equatable {
  final List<ServiceModel> allServices;
  final bool isLoading;
  final bool hasReachedMax; // Per lo scroll infinito
  final String? errorMessage;
  // Parametri di ricerca
  final String query;
  final DateTimeRange? dateRange;

  const ServicesState({
    this.allServices = const [],
    this.isLoading = false,
    this.hasReachedMax = false,
    this.errorMessage,
    this.query = '',
    this.dateRange,
  });
  ServicesState copyWith({
    List<ServiceModel>? allServices,
    bool? isLoading,
    String? errorMessage,
    bool? hasReachedMax,
    String? query,
    DateTimeRange? dateRange,
  }) {
    return ServicesState(
      allServices: allServices ?? this.allServices,
      isLoading: isLoading ?? this.isLoading,
      errorMessage:
          errorMessage, // Se non lo passiamo, torna null (pulisce l'errore)
      hasReachedMax: hasReachedMax ?? this.hasReachedMax,
      query: query ?? this.query,
      dateRange: dateRange ?? this.dateRange,
    );
  }

  @override
  List<Object?> get props => [
    allServices,
    isLoading,
    hasReachedMax,
    errorMessage,
    query,
    dateRange,
  ];
}

class ServicesCubit extends Cubit<ServicesState> {
  final ServicesRepository _repository = GetIt.I<ServicesRepository>();

  ServicesCubit() : super(const ServicesState());

  // Carica tutto il pacchetto
  Future<void> loadServices({bool refresh = false}) async {
    if (state.isLoading) return;

    // Se facciamo refresh, resettiamo tutto
    final currentOffset = refresh ? 0 : state.allServices.length;

    emit(
      state.copyWith(
        isLoading: true,
        allServices: refresh ? [] : state.allServices,
        hasReachedMax: refresh ? false : state.hasReachedMax,
      ),
    );

    try {
      final newServices = await _repository.fetchServices(
        offset: currentOffset,
        searchTerm: state.query,
        dateRange: state.dateRange,
      );

      emit(
        state.copyWith(
          isLoading: false,
          allServices: List.from(state.allServices)..addAll(newServices),
          hasReachedMax:
              newServices.length <
              50, // Se ne arrivano meno di 50, siamo alla fine
        ),
      );
    } catch (e) {
      emit(state.copyWith(isLoading: false, errorMessage: e.toString()));
    }
  }

  void updateFilters({String? query, DateTimeRange? range}) {
    emit(state.copyWith(query: query, dateRange: range));
    loadServices(refresh: true); // Applica i filtri e riparte da zero
  }

  // Salva e ricarica
  Future<void> addService(ServiceModel service) async {
    emit(state.copyWith(isLoading: true));
    try {
      await _repository.saveFullService(service);
      await loadServices(); // Ricarichiamo la lista aggiornata
    } catch (e) {
      emit(state.copyWith(isLoading: false, errorMessage: e.toString()));
    }
  }
}