[MM-44489] Cloud limits: enforcing files (#20703)

* Update last accessible file time

* Filter fileInfos

* Set inaccessible header

* Fix lint issue

* Fix lint issue

* Fix i18n

* add nil check

* Fix merge conflicts

* Add helper functions to clear out inaccessible files content

* Remove content for inaccessible files

* Fix typo

* wip

* Remove InaccessibleContent field, instead use Archived

* Add store tests

* Add tests

* Add separate funcs to ignore cloud limits

* Use separate query for MySql

* Use GetReplicaX

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/post.go

@@ -1558,12 +1558,12 @@ func (a *App) GetFileInfosForPostWithMigration(postID string, includeDeleted boo
 		close(pchan)
 	}()
 
-	infos, err := a.GetFileInfosForPost(postID, false, includeDeleted)
+	infos, firstInaccessibleFileTime, err := a.GetFileInfosForPost(postID, false, includeDeleted)
 	if err != nil {
 		return nil, err
 	}
 
-	if len(infos) == 0 {
+	if len(infos) == 0 && firstInaccessibleFileTime == 0 {
 		// No FileInfos were returned so check if they need to be created for this post
 		result := <-pchan
 		if result.NErr != nil {
@@ -1588,10 +1588,27 @@ func (a *App) GetFileInfosForPostWithMigration(postID string, includeDeleted boo
 	return infos, nil
 }
 
-func (a *App) GetFileInfosForPost(postID string, fromMaster bool, includeDeleted bool) ([]*model.FileInfo, *model.AppError) {
+// GetFileInfosForPost also returns firstInaccessibleFileTime based on cloud plan's limit.
+func (a *App) GetFileInfosForPost(postID string, fromMaster bool, includeDeleted bool) ([]*model.FileInfo, int64, *model.AppError) {
 	fileInfos, err := a.Srv().Store.FileInfo().GetForPost(postID, fromMaster, includeDeleted, true)
 	if err != nil {
-		return nil, model.NewAppError("GetFileInfosForPost", "app.file_info.get_for_post.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+		return nil, 0, model.NewAppError("GetFileInfosForPost", "app.file_info.get_for_post.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+
+	firstInaccessibleFileTime, appErr := a.removeInaccessibleContentFromFilesSlice(fileInfos)
+	if appErr != nil {
+		return nil, 0, appErr
+	}
+
+	a.generateMiniPreviewForInfos(fileInfos)
+
+	return fileInfos, firstInaccessibleFileTime, nil
+}
+
+func (a *App) getFileInfosForPostIgnoreCloudLimit(postID string, fromMaster bool, includeDeleted bool) ([]*model.FileInfo, *model.AppError) {
+	fileInfos, err := a.Srv().Store.FileInfo().GetForPost(postID, fromMaster, includeDeleted, true)
+	if err != nil {
+		return nil, model.NewAppError("getFileInfosForPostIgnoreCloudLimit", "app.file_info.get_for_post.app_error", nil, "", http.StatusInternalServerError).Wrap(err)
 	}
 
 	a.generateMiniPreviewForInfos(fileInfos)