import 'dart:async';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../core/network/dio_client.dart';
import '../domain/sales_channel.dart';

class SalesChannelsNotifier extends AsyncNotifier<List<SalesChannel>> {
  @override
  FutureOr<List<SalesChannel>> build() async {
    return _fetchChannels();
  }

  Future<List<SalesChannel>> _fetchChannels() async {
    try {
      final response = await DioClient().dio.get('/sales-channels');
      if (response.statusCode == 200) {
        final List<dynamic> data = response.data;
        return data.map((e) => SalesChannel.fromJson(e)).toList();
      }
      return [];
    } catch (e) {
      print('Error fetching sales channels: $e');
      return [];
    }
  }

  Future<void> refresh() async {
    state = const AsyncValue.loading();
    try {
      final channels = await _fetchChannels();
      state = AsyncValue.data(channels);
    } catch (e, stack) {
      state = AsyncValue.error(e, stack);
    }
  }

  Future<SalesChannel?> createChannel(SalesChannel channel) async {
    try {
      final response = await DioClient().dio.post('/sales-channels', data: channel.toJson());
      await refresh();
      if (response.data != null) {
        return SalesChannel.fromJson(response.data);
      }
      return null;
    } catch (e) {
      throw Exception('Failed to create sales channel: $e');
    }
  }

  Future<SalesChannel?> updateChannel(int id, SalesChannel channel) async {
    try {
      final response = await DioClient().dio.put('/sales-channels/$id', data: channel.toJson());
      await refresh();
      if (response.data != null) {
        return SalesChannel.fromJson(response.data);
      }
      return null;
    } catch (e) {
      throw Exception('Failed to update sales channel: $e');
    }
  }

  Future<void> deleteChannel(int id) async {
    try {
      await DioClient().dio.delete('/sales-channels/$id');
      await refresh();
    } catch (e) {
      throw Exception('Failed to delete sales channel: $e');
    }
  }
}

final salesChannelsProvider = AsyncNotifierProvider<SalesChannelsNotifier, List<SalesChannel>>(() {
  return SalesChannelsNotifier();
});