[feat] send multiple API requests in parallel

lib/models/request_model.dart

@@ -29,6 +29,7 @@ class RequestModel {
     this.responseStatus,
     this.message,
     this.responseModel,
+    this.isWorking = false,
   });
 
   final String id;
@@ -47,6 +48,7 @@ class RequestModel {
   final int? responseStatus;
   final String? message;
   final ResponseModel? responseModel;
+  final bool isWorking;
 
   List<NameValueModel>? get enabledRequestHeaders =>
       getEnabledRows(requestHeaders, isHeaderEnabledList);
@@ -106,6 +108,7 @@ class RequestModel {
     int? responseStatus,
     String? message,
     ResponseModel? responseModel,
+    bool? isWorking,
   }) {
     var headers = requestHeaders ?? this.requestHeaders;
     var params = requestParams ?? this.requestParams;
@@ -129,6 +132,7 @@ class RequestModel {
       responseStatus: responseStatus ?? this.responseStatus,
       message: message ?? this.message,
       responseModel: responseModel ?? this.responseModel,
+      isWorking: isWorking ?? this.isWorking,
     );
   }
 

lib/providers/collection_providers.dart

@@ -156,11 +156,20 @@ class CollectionStateNotifier
   }
 
   Future<void> sendRequest(String id) async {
-    ref.read(sentRequestIdStateProvider.notifier).state = id;
     ref.read(codePaneVisibleStateProvider.notifier).state = false;
-    final defaultUriScheme =
-        ref.read(settingsProvider.select((value) => value.defaultUriScheme));
+    final defaultUriScheme = ref.read(
+      settingsProvider.select(
+        (value) => value.defaultUriScheme,
+      ),
+    );
+
     RequestModel requestModel = state![id]!;
+
+    // set current model's isWorking to true and update state
+    var map = {...state!};
+    map[id] = requestModel.copyWith(isWorking: true);
+    state = map;
+
     (http.Response?, Duration?, String?)? responseRec = await request(
       requestModel,
       defaultUriScheme: defaultUriScheme,
@@ -172,6 +181,7 @@ class CollectionStateNotifier
       newRequestModel = requestModel.copyWith(
         responseStatus: -1,
         message: responseRec.$3,
+        isWorking: false,
       );
     } else {
       final responseModel = baseResponseModel.fromResponse(
@@ -183,10 +193,12 @@ class CollectionStateNotifier
         responseStatus: statusCode,
         message: kResponseCodeReasons[statusCode],
         responseModel: responseModel,
+        isWorking: false,
       );
     }
-    ref.read(sentRequestIdStateProvider.notifier).state = null;
-    var map = {...state!};
+
+    // update state with response data
+    map = {...state!};
     map[id] = newRequestModel;
     state = map;
   }

lib/screens/home_page/editor_pane/details_card/response_pane.dart

@@ -9,13 +9,12 @@ class ResponsePane extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final selectedId = ref.watch(selectedIdStateProvider);
-    final sentRequestId = ref.watch(sentRequestIdStateProvider);
     final responseStatus = ref.watch(
         selectedRequestModelProvider.select((value) => value?.responseStatus));
+    final isWorking = ref.watch(selectedRequestModelProvider)?.isWorking;
     final message = ref
         .watch(selectedRequestModelProvider.select((value) => value?.message));
-    if (sentRequestId != null && sentRequestId == selectedId) {
+    if (isWorking == true) {
       return const SendingWidget();
     }
     if (responseStatus == null) {

lib/screens/home_page/editor_pane/url_card.dart

@@ -93,10 +93,10 @@ class SendButton extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final selectedId = ref.watch(selectedIdStateProvider);
-    final sentRequestId = ref.watch(sentRequestIdStateProvider);
+    final isWorking = ref.watch(selectedRequestModelProvider)?.isWorking;
+
     return SendRequestButton(
-      selectedId: selectedId,
-      sentRequestId: sentRequestId,
+      isWorking: isWorking,
       onTap: () {
         ref
             .read(collectionStateNotifierProvider.notifier)

lib/widgets/buttons.dart

@@ -47,31 +47,26 @@ class CopyButton extends StatelessWidget {
 class SendRequestButton extends StatelessWidget {
   const SendRequestButton({
     super.key,
-    required this.selectedId,
-    required this.sentRequestId,
+    required this.isWorking,
     required this.onTap,
   });
 
-  final String? selectedId;
-  final String? sentRequestId;
+  final bool? isWorking;
   final void Function() onTap;
 
   @override
   Widget build(BuildContext context) {
-    bool disable = sentRequestId != null;
     return FilledButton(
-      onPressed: disable ? null : onTap,
+      onPressed: isWorking == true ? null : onTap,
       child: Row(
         mainAxisSize: MainAxisSize.min,
         children: [
           Text(
-            disable
-                ? (selectedId == sentRequestId ? kLabelSending : kLabelBusy)
-                : kLabelSend,
+            isWorking == true ? kLabelSending : kLabelSend,
             style: kTextStyleButton,
           ),
-          if (!disable) kHSpacer10,
-          if (!disable)
+          if (isWorking == false) kHSpacer10,
+          if (isWorking == false)
             const Icon(
               size: 16,
               Icons.send,