import 'package:flutter/material.dart';
import 'package:hive/hive.dart';
import '../models/category_model.dart';
import 'package:uuid/uuid.dart';

class CategoryProvider extends ChangeNotifier {
  List<CategoryModel> _categories = [];
  late Box<CategoryModel> _categoryBox;

  List<CategoryModel> get categories => _categories;

  Future<void> init() async {
    _categoryBox = await Hive.openBox<CategoryModel>('categories');
    _categories = _categoryBox.values.toList();

    // 카테고리가 비어있으면 기본 카테고리 추가
    if (_categories.isEmpty) {
      await _initDefaultCategories();
    }

    notifyListeners();
  }

  // 기본 카테고리 초기화
  Future<void> _initDefaultCategories() async {
    final defaultCategories = [
      {'name': 'OTT 서비스', 'color': '#3B82F6', 'icon': 'live_tv'},
      {'name': '음악 서비스', 'color': '#EC4899', 'icon': 'music_note'},
      {'name': 'AI 서비스', 'color': '#8B5CF6', 'icon': 'psychology'},
      {'name': '프로그래밍/개발', 'color': '#10B981', 'icon': 'code'},
      {'name': '오피스/협업 툴', 'color': '#F59E0B', 'icon': 'business_center'},
      {'name': '기타 서비스', 'color': '#6B7280', 'icon': 'more_horiz'},
    ];

    for (final category in defaultCategories) {
      final newCategory = CategoryModel(
        id: const Uuid().v4(),
        name: category['name']!,
        color: category['color']!,
        icon: category['icon']!,
      );

      await _categoryBox.put(newCategory.id, newCategory);
      _categories.add(newCategory);
    }
  }

  Future<void> addCategory({
    required String name,
    required String color,
    required String icon,
  }) async {
    final newCategory = CategoryModel(
      id: const Uuid().v4(),
      name: name,
      color: color,
      icon: icon,
    );
    await _categoryBox.put(newCategory.id, newCategory);
    _categories.add(newCategory);
    notifyListeners();
  }

  Future<void> updateCategory(CategoryModel updated) async {
    await _categoryBox.put(updated.id, updated);
    int index = _categories.indexWhere((cat) => cat.id == updated.id);
    if (index != -1) {
      _categories[index] = updated;
      notifyListeners();
    }
  }

  Future<void> deleteCategory(String id) async {
    await _categoryBox.delete(id);
    _categories.removeWhere((cat) => cat.id == id);
    notifyListeners();
  }

  CategoryModel? getCategoryById(String id) {
    try {
      return _categories.firstWhere((cat) => cat.id == id);
    } catch (_) {
      return null;
    }
  }
}