feat(app): add manual entry and sharing flows

lib/presentation/view_models/add_restaurant_view_model.dart

@@ -3,33 +3,46 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:uuid/uuid.dart';
 
 import '../../domain/entities/restaurant.dart';
+import '../providers/di_providers.dart';
 import '../providers/restaurant_provider.dart';
 
 /// 식당 추가 화면의 상태 모델
 class AddRestaurantState {
   final bool isLoading;
+  final bool isSearching;
   final String? errorMessage;
   final Restaurant? fetchedRestaurantData;
   final RestaurantFormData formData;
+  final List<Restaurant> searchResults;
 
   const AddRestaurantState({
     this.isLoading = false,
+    this.isSearching = false,
     this.errorMessage,
     this.fetchedRestaurantData,
     required this.formData,
+    this.searchResults = const [],
   });
 
   AddRestaurantState copyWith({
     bool? isLoading,
+    bool? isSearching,
     String? errorMessage,
     Restaurant? fetchedRestaurantData,
     RestaurantFormData? formData,
+    List<Restaurant>? searchResults,
+    bool clearFetchedRestaurant = false,
+    bool clearError = false,
   }) {
     return AddRestaurantState(
       isLoading: isLoading ?? this.isLoading,
-      errorMessage: errorMessage ?? this.errorMessage,
-      fetchedRestaurantData: fetchedRestaurantData ?? this.fetchedRestaurantData,
+      isSearching: isSearching ?? this.isSearching,
+      errorMessage: clearError ? null : (errorMessage ?? this.errorMessage),
+      fetchedRestaurantData: clearFetchedRestaurant
+          ? null
+          : (fetchedRestaurantData ?? this.fetchedRestaurantData),
       formData: formData ?? this.formData,
+      searchResults: searchResults ?? this.searchResults,
     );
   }
 }
@@ -156,7 +169,12 @@ class AddRestaurantViewModel extends StateNotifier<AddRestaurantState> {
   final Ref _ref;
 
   AddRestaurantViewModel(this._ref)
-      : super(const AddRestaurantState(formData: RestaurantFormData()));
+    : super(const AddRestaurantState(formData: RestaurantFormData()));
+
+  /// 상태 초기화
+  void reset() {
+    state = const AddRestaurantState(formData: RestaurantFormData());
+  }
 
   /// 네이버 URL로부터 식당 정보 가져오기
   Future<void> fetchFromNaverUrl(String url) async {
@@ -165,11 +183,11 @@ class AddRestaurantViewModel extends StateNotifier<AddRestaurantState> {
       return;
     }
 
-    state = state.copyWith(isLoading: true, errorMessage: null);
+    state = state.copyWith(isLoading: true, clearError: true);
 
     try {
-      final notifier = _ref.read(restaurantNotifierProvider.notifier);
-      final restaurant = await notifier.addRestaurantFromUrl(url);
+      final repository = _ref.read(restaurantRepositoryProvider);
+      final restaurant = await repository.previewRestaurantFromUrl(url);
 
       state = state.copyWith(
         isLoading: false,
@@ -177,42 +195,83 @@ class AddRestaurantViewModel extends StateNotifier<AddRestaurantState> {
         formData: RestaurantFormData.fromRestaurant(restaurant),
       );
     } catch (e) {
-      state = state.copyWith(
-        isLoading: false,
-        errorMessage: e.toString(),
-      );
+      state = state.copyWith(isLoading: false, errorMessage: e.toString());
     }
   }
 
+  /// 네이버 검색으로 식당 목록 검색
+  Future<void> searchRestaurants(
+    String query, {
+    double? latitude,
+    double? longitude,
+  }) async {
+    if (query.trim().isEmpty) {
+      state = state.copyWith(
+        errorMessage: '검색어를 입력해주세요.',
+        searchResults: const [],
+      );
+      return;
+    }
+
+    state = state.copyWith(isSearching: true, clearError: true);
+
+    try {
+      final repository = _ref.read(restaurantRepositoryProvider);
+      final results = await repository.searchRestaurantsFromNaver(
+        query: query,
+        latitude: latitude,
+        longitude: longitude,
+      );
+      state = state.copyWith(isSearching: false, searchResults: results);
+    } catch (e) {
+      state = state.copyWith(isSearching: false, errorMessage: e.toString());
+    }
+  }
+
+  /// 검색 결과 선택
+  void selectSearchResult(Restaurant restaurant) {
+    state = state.copyWith(
+      fetchedRestaurantData: restaurant,
+      formData: RestaurantFormData.fromRestaurant(restaurant),
+      clearError: true,
+    );
+  }
+
   /// 식당 정보 저장
   Future<bool> saveRestaurant() async {
     final notifier = _ref.read(restaurantNotifierProvider.notifier);
 
     try {
+      state = state.copyWith(isLoading: true, clearError: true);
       Restaurant restaurantToSave;
-      
+
       // 네이버에서 가져온 데이터가 있으면 업데이트
       final fetchedData = state.fetchedRestaurantData;
       if (fetchedData != null) {
         restaurantToSave = fetchedData.copyWith(
           name: state.formData.name,
           category: state.formData.category,
-          subCategory: state.formData.subCategory.isEmpty 
-              ? state.formData.category 
+          subCategory: state.formData.subCategory.isEmpty
+              ? state.formData.category
               : state.formData.subCategory,
-          description: state.formData.description.isEmpty 
-              ? null 
+          description: state.formData.description.isEmpty
+              ? null
               : state.formData.description,
-          phoneNumber: state.formData.phoneNumber.isEmpty 
-              ? null 
+          phoneNumber: state.formData.phoneNumber.isEmpty
+              ? null
               : state.formData.phoneNumber,
           roadAddress: state.formData.roadAddress,
-          jibunAddress: state.formData.jibunAddress.isEmpty 
-              ? state.formData.roadAddress 
+          jibunAddress: state.formData.jibunAddress.isEmpty
+              ? state.formData.roadAddress
               : state.formData.jibunAddress,
-          latitude: double.tryParse(state.formData.latitude) ?? fetchedData.latitude,
-          longitude: double.tryParse(state.formData.longitude) ?? fetchedData.longitude,
-          naverUrl: state.formData.naverUrl.isEmpty ? null : state.formData.naverUrl,
+          latitude:
+              double.tryParse(state.formData.latitude) ?? fetchedData.latitude,
+          longitude:
+              double.tryParse(state.formData.longitude) ??
+              fetchedData.longitude,
+          naverUrl: state.formData.naverUrl.isEmpty
+              ? null
+              : state.formData.naverUrl,
           updatedAt: DateTime.now(),
         );
       } else {
@@ -221,9 +280,10 @@ class AddRestaurantViewModel extends StateNotifier<AddRestaurantState> {
       }
 
       await notifier.addRestaurantDirect(restaurantToSave);
+      state = state.copyWith(isLoading: false);
       return true;
     } catch (e) {
-      state = state.copyWith(errorMessage: e.toString());
+      state = state.copyWith(isLoading: false, errorMessage: e.toString());
       return false;
     }
   }
@@ -235,12 +295,13 @@ class AddRestaurantViewModel extends StateNotifier<AddRestaurantState> {
 
   /// 에러 메시지 초기화
   void clearError() {
-    state = state.copyWith(errorMessage: null);
+    state = state.copyWith(clearError: true);
   }
 }
 
 /// AddRestaurantViewModel Provider
 final addRestaurantViewModelProvider =
-    StateNotifierProvider.autoDispose<AddRestaurantViewModel, AddRestaurantState>(
-  (ref) => AddRestaurantViewModel(ref),
-);
+    StateNotifierProvider.autoDispose<
+      AddRestaurantViewModel,
+      AddRestaurantState
+    >((ref) => AddRestaurantViewModel(ref));