feat: add new status api action, closes #11

Author: aitorres

lib/screens/timeline_tabs.dart

@@ -107,6 +107,9 @@ class _TimelineTabsState extends State<TimelineTabs> {
             onSuccessfulSubmit: () {
               // Hide the dialog box
               Navigator.of(context).pop();
+
+              // Show a success message
+              showSnackBar(context, "Status posted successfully!");
             },
           ),
         );

lib/services/api.dart

@@ -257,6 +257,28 @@ class ApiService {
     );
   }
 
+  /// Given a status content, requests the Mastodon API to post a new status
+  /// on the user's timeline. Returns the (new) [Status] instance the API
+  /// responds with.
+  Future<Status> postStatus(String content) async {
+    final apiUrl = "${instanceUrl!}/api/v1/statuses";
+    // TODO: Support sensitivity, visibility, language, scheduling, polls and media
+    http.Response resp = await helper!.post(
+      apiUrl,
+      body: {"status": content},
+      httpClient: httpClient,
+    );
+
+    if (resp.statusCode == 200) {
+      Map<String, dynamic> jsonData = jsonDecode(resp.body);
+      return Status.fromJson(jsonData);
+    }
+
+    throw ApiException(
+      "Unexpected status code ${resp.statusCode} on `postStatus`",
+    );
+  }
+
   /// Given a [Status]'s ID, requests the Mastodon API to bookmark
   /// the status. Note that this is idempotent: an already-bookmarked
   /// status will remain bookmarked. Returns the (new) [Status] instance

lib/widgets/status_form.dart

@@ -1,4 +1,5 @@
 import 'package:feathr/services/api.dart';
+import 'package:feathr/utils/messages.dart';
 import 'package:flutter/material.dart';
 
 import 'package:feathr/widgets/buttons.dart';
@@ -53,9 +54,24 @@ class StatusFormState extends State<StatusForm> {
               : null,
         ),
         FeathrActionButton(
-          onPressed: () {
+          onPressed: () async {
             if (_formKey.currentState!.validate()) {
-              // TODO: Implement the API call to submit the status
+              // Hide the button and show a spinner while the status is being
+              // submitted
+
+              // Post the status to the server
+              try {
+                await widget.apiService.postStatus(statusController.text);
+              } catch (e) {
+                // Show an error message if the status couldn't be posted
+                if (context.mounted) {
+                  showSnackBar(context, 'Failed to post status: $e');
+                }
+
+                return;
+              }
+
+              // Post was successful, call the success function!
               widget.onSuccessfulSubmit();
             }
           },