Export long message attachments

ts/components/EditHistoryMessagesModal.tsx

@@ -125,7 +125,12 @@ export function EditHistoryMessagesModal({
           isEditedMessage
           isSpoilerExpanded={revealedSpoilersById[currentMessageId] || {}}
           key={currentMessage.timestamp}
-          kickOffAttachmentDownload={kickOffAttachmentDownload}
+          kickOffAttachmentDownload={({ attachment }) =>
+            kickOffAttachmentDownload({
+              attachment,
+              messageId: currentMessage.id,
+            })
+          }
           messageExpanded={(messageId, displayLimit) => {
             const update = {
               ...displayLimitById,
@@ -188,7 +193,12 @@ export function EditHistoryMessagesModal({
                 getPreferredBadge={getPreferredBadge}
                 i18n={i18n}
                 isSpoilerExpanded={revealedSpoilersById[syntheticId] || {}}
-                kickOffAttachmentDownload={kickOffAttachmentDownload}
+                kickOffAttachmentDownload={({ attachment }) =>
+                  kickOffAttachmentDownload({
+                    attachment,
+                    messageId: messageAttributes.id,
+                  })
+                }
                 messageExpanded={(messageId, displayLimit) => {
                   const update = {
                     ...displayLimitById,

ts/components/LeftPane.tsx

@@ -650,15 +650,10 @@ export function LeftPane({
     dialogs.push({ key: 'banner', dialog: maybeBanner });
   }
 
-  // We'll show the backup media download progress banner if the download is currently or
-  // was ongoing at some point during the lifecycle of this component
-
-  const isMediaBackupDownloadIncomplete =
-    backupMediaDownloadProgress?.totalBytes > 0 &&
-    backupMediaDownloadProgress.downloadedBytes <
-      backupMediaDownloadProgress.totalBytes;
+  const hasMediaBeenQueuedForBackup =
+    backupMediaDownloadProgress?.totalBytes > 0;
   if (
-    isMediaBackupDownloadIncomplete &&
+    hasMediaBeenQueuedForBackup &&
     !backupMediaDownloadProgress.downloadBannerDismissed
   ) {
     dialogs.push({

ts/components/conversation/Message.tsx

@@ -1966,6 +1966,9 @@ export class Message extends React.PureComponent<Props, State> {
             if (!textAttachment) {
               return;
             }
+            if (isDownloaded(textAttachment)) {
+              return;
+            }
             kickOffAttachmentDownload({
               attachment: textAttachment,
               messageId: id,

ts/components/conversation/MessageBody.tsx

@@ -5,7 +5,7 @@ import type { KeyboardEvent } from 'react';
 import React from 'react';
 
 import type { AttachmentType } from '../../types/Attachment';
-import { canBeDownloaded } from '../../types/Attachment';
+import { canBeDownloaded, isDownloaded } from '../../types/Attachment';
 import { getSizeClass } from '../emoji/lib';
 
 import type { ShowConversationType } from '../../state/ducks/conversations';
@@ -35,7 +35,7 @@ export type Props = {
   text: string;
   textAttachment?: Pick<
     AttachmentType,
-    'pending' | 'digest' | 'key' | 'wasTooBig'
+    'pending' | 'digest' | 'key' | 'wasTooBig' | 'path'
   >;
 };
 
@@ -97,6 +97,7 @@ export function MessageBody({
   } else if (
     textAttachment &&
     canBeDownloaded(textAttachment) &&
+    !isDownloaded(textAttachment) &&
     kickOffBodyDownload
   ) {
     endNotification = (