ensure all alt media are updated, fix #430

src/app/components/create-status/create-status.component.ts

@@ -537,7 +537,7 @@ export class CreateStatusComponent implements OnInit, OnDestroy {
         return false;
     }
 
-    onSubmit(): boolean {
+    async onSubmit(): Promise<boolean> {
         if (this.isSending || this.mentionTooFarAwayError) return false;
 
         this.isSending = true;
@@ -558,9 +558,10 @@ export class CreateStatusComponent implements OnInit, OnDestroy {
                 break;
         }
 
-        const mediaAttachments = this.mediaService.mediaSubject.value.map(x => x.attachment);
-
         const acc = this.toolsService.getSelectedAccounts()[0];
+
+        const mediaAttachments = (await this.mediaService.retrieveUpToDateMedia(acc)).map(x => x.attachment);
+        
         let usableStatus: Promise<Status>;
         if (this.statusReplyingToWrapper) {
             usableStatus = this.toolsService.getStatusUsableByAccount(acc, this.statusReplyingToWrapper);

src/app/services/media.service.ts

@@ -51,10 +51,10 @@ export class MediaService {
             });
     }
 
-    update(account: AccountInfo, media: MediaWrapper) {
+    update(account: AccountInfo, media: MediaWrapper): Promise<void> {
         if (media.attachment.description === media.description) return;
 
-        this.mastodonService.updateMediaAttachment(account, media.attachment.id, media.description)
+        return this.mastodonService.updateMediaAttachment(account, media.attachment.id, media.description)
             .then((att: Attachment) => {
                 let medias = this.mediaSubject.value;
                 let updatedMedia = medias.filter(x => x.id === media.id)[0];
@@ -66,6 +66,20 @@ export class MediaService {
             });
     }
 
+    async retrieveUpToDateMedia(account: AccountInfo): Promise<MediaWrapper[]> {
+        const allMedia = this.mediaSubject.value;
+        let allPromises: Promise<any>[] = [];
+        
+        for (const m of allMedia) {            
+            let t = this.update(account, m);
+            allPromises.push(t);
+        }
+
+        await Promise.all(allPromises);
+
+        return allMedia;
+    }
+
     addExistingMedia(media: MediaWrapper){
         if(!this.fileCache[media.attachment.url]) return;