MM-15035: Read from file infos from master on post creation (#10899)

* MM-15035: Read from file infos from master on post creation

* Handling edit post cases for get files metadata

app/post.go

@@ -295,7 +295,7 @@ func (a *App) CreatePost(post *model.Post, channel *model.Channel, triggerWebhoo
 
 	// Normally, we would let the API layer call PreparePostForClient, but we do it here since it also needs
 	// to be done when we send the post over the websocket in handlePostEvents
-	rpost = a.PreparePostForClient(rpost, true)
+	rpost = a.PreparePostForClient(rpost, true, false)
 
 	if err := a.handlePostEvents(rpost, user, channel, triggerWebhooks, parentPostList); err != nil {
 		mlog.Error("Failed to handle post events", mlog.Err(err))
@@ -415,7 +415,7 @@ func (a *App) SendEphemeralPost(userId string, post *model.Post) *model.Post {
 
 	post.GenerateActionIds()
 	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_EPHEMERAL_MESSAGE, "", post.ChannelId, userId, nil)
-	post = a.PreparePostForClient(post, true)
+	post = a.PreparePostForClient(post, true, false)
 	post = model.AddPostActionCookies(post, a.PostActionCookieSecret())
 	message.Add("post", post.ToJson())
 	a.Publish(message)
@@ -433,7 +433,7 @@ func (a *App) UpdateEphemeralPost(userId string, post *model.Post) *model.Post {
 
 	post.GenerateActionIds()
 	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_EDITED, "", post.ChannelId, userId, nil)
-	post = a.PreparePostForClient(post, true)
+	post = a.PreparePostForClient(post, true, false)
 	post = model.AddPostActionCookies(post, a.PostActionCookieSecret())
 	message.Add("post", post.ToJson())
 	a.Publish(message)
@@ -563,7 +563,7 @@ func (a *App) UpdatePost(post *model.Post, safeUpdate bool) (*model.Post, *model
 		})
 	}
 
-	rpost = a.PreparePostForClient(rpost, false)
+	rpost = a.PreparePostForClient(rpost, false, true)
 
 	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_EDITED, "", rpost.ChannelId, "", nil)
 	message.Add("post", rpost.ToJson())
@@ -741,7 +741,7 @@ func (a *App) DeletePost(postId, deleteByID string) (*model.Post, *model.AppErro
 	}
 
 	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_DELETED, "", post.ChannelId, "", nil)
-	message.Add("post", a.PreparePostForClient(post, false).ToJson())
+	message.Add("post", a.PreparePostForClient(post, false, false).ToJson())
 	a.Publish(message)
 
 	a.Srv.Go(func() {
@@ -957,7 +957,7 @@ func (a *App) SearchPostsInTeamForUser(terms string, userId string, teamId strin
 func (a *App) GetFileInfosForPostWithMigration(postId string) ([]*model.FileInfo, *model.AppError) {
 	pchan := a.Srv.Store.Post().GetSingle(postId)
 
-	infos, err := a.GetFileInfosForPost(postId)
+	infos, err := a.GetFileInfosForPost(postId, false)
 	if err != nil {
 		return nil, err
 	}
@@ -980,8 +980,8 @@ func (a *App) GetFileInfosForPostWithMigration(postId string) ([]*model.FileInfo
 	return infos, nil
 }
 
-func (a *App) GetFileInfosForPost(postId string) ([]*model.FileInfo, *model.AppError) {
-	return a.Srv.Store.FileInfo().GetForPost(postId, false, true)
+func (a *App) GetFileInfosForPost(postId string, fromMaster bool) ([]*model.FileInfo, *model.AppError) {
+	return a.Srv.Store.FileInfo().GetForPost(postId, fromMaster, true)
 }
 
 func (a *App) PostWithProxyAddedToImageURLs(post *model.Post) *model.Post {