Add: Getting items by its ids

lib/pages/basket.dart

@@ -60,12 +60,12 @@ class _BasketPageState extends State<BasketPage> {
   List<GymItem> cartItems = [];
   double totalPrice = 0;
   List<GymItem> gymCart = [];
+  bool _isLoading = true;
 
   @override
   void initState() {
     super.initState();
     Future.microtask(() => getCart().then((value) async {
-          //TODO: Сделать через получение конкретных товаров через getItemsByIds
           final itemIds =
               value.map((element) => element['id'] as String).toList();
           final items = await getItemsByIds(context, itemIds);
@@ -78,6 +78,7 @@ class _BasketPageState extends State<BasketPage> {
             }).toList();
             totalPrice = cartItems.fold(
                 0, (sum, item) => sum + item.price * item.localCount);
+            _isLoading = false;
           });
         }));
   }
@@ -230,7 +231,7 @@ class _BasketPageState extends State<BasketPage> {
       body: Column(
         children: [
           const GymLinkHeader(title: "Корзина"),
-          gymCart.isEmpty
+          _isLoading
               ? const Expanded(
                   child: Center(child: CircularProgressIndicator()))
               : cartItems.isEmpty

lib/pages/order_confirmation.dart

@@ -61,12 +61,15 @@ class _OrderConfirmationPageState extends State<OrderConfirmationPage> {
   List<GymItem> cartItems = [];
   double totalPrice = 0;
   List<GymItem> gymCart = [];
+  bool _isLoading = true;
 
   @override
   void initState() {
     super.initState();
     Future.microtask(() => getCart().then((value) async {
-          final items = await getItems(context);
+          final itemIds =
+              value.map((element) => element['id'] as String).toList();
+          final items = await getItemsByIds(context, itemIds);
           setState(() {
             gymCart = items;
             cartItems = value.map((element) {
@@ -76,6 +79,7 @@ class _OrderConfirmationPageState extends State<OrderConfirmationPage> {
             }).toList();
             totalPrice = cartItems.fold(
                 0, (sum, item) => sum + item.price * item.localCount);
+            _isLoading = false;
           });
         }));
   }
@@ -98,7 +102,9 @@ class _OrderConfirmationPageState extends State<OrderConfirmationPage> {
           const GymLinkHeader(title: 'Оформление заказа'),
           const MarkdownBody(data: '## Состав заказа:'),
           Expanded(
-            child: ConstrainedBox(
+            child: _isLoading
+                ? const Center(child: CircularProgressIndicator())
+                : ConstrainedBox(
                     constraints: const BoxConstraints(maxHeight: 350),
                     child: ListView.builder(
                       itemCount: cartItems.length,

lib/tools/items.dart

@@ -37,15 +37,19 @@ Future<List<GymItem>> getItemsByIds(
     BuildContext context, List<String> ids) async {
   final token = context.read<GymLinkProvider>().token;
   if (token != '') {
+    if (ids.isEmpty) {
+      return [];
+    }
     final Uri url =
         Uri.http('gymlink.freemyip.com:8080', 'api/product/get-products');
     try {
       final response = await http.post(url,
           headers: {
             'Authorization': 'Bearer $token',
+            'Content-Type': 'application/json'
           },
-          body: jsonEncode(ids.toList()));
-      if (response.statusCode == 200) {
+          body: jsonEncode({"ids": ids}));
+      if (response.statusCode == 201) {
         final data =
             jsonDecode(utf8.decode(response.bodyBytes)) as List<dynamic>;
         final items = data.map((e) => GymItem.fromJson(e)).toList();