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

class BarcodeTemplatesNotifier extends AsyncNotifier<List<BarcodeTemplate>> {
  @override
  FutureOr<List<BarcodeTemplate>> build() async {
    return _fetchTemplates();
  }

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

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

  Future<BarcodeTemplate?> saveTemplate(BarcodeTemplate template) async {
    try {
      if (template.id != null) {
        final response = await DioClient().dio.put(
          '/barcode-templates/${template.id}',
          data: template.toJson(),
        );
        await refresh();
        if (response.data != null) {
          return BarcodeTemplate.fromJson(response.data);
        }
      } else {
        final response = await DioClient().dio.post(
          '/barcode-templates',
          data: template.toJson(),
        );
        await refresh();
        if (response.data != null) {
          return BarcodeTemplate.fromJson(response.data);
        }
      }
      return null;
    } catch (e) {
      print('Error saving barcode template: $e');
      rethrow;
    }
  }

  Future<bool> deleteTemplate(int id) async {
    try {
      final response = await DioClient().dio.delete('/barcode-templates/$id');
      await refresh();
      return response.statusCode == 200 || response.statusCode == 204;
    } catch (e) {
      print('Error deleting barcode template: $e');
      return false;
    }
  }
}

final barcodeTemplatesProvider =
    AsyncNotifierProvider<BarcodeTemplatesNotifier, List<BarcodeTemplate>>(() {
  return BarcodeTemplatesNotifier();
});