implement #1364

show connectionError string if status is not 404

src/content.ts

@@ -65,8 +65,8 @@ const videosWithEventListeners: HTMLVideoElement[] = [];
 const controlsWithEventListeners: HTMLElement[] = []
 
 // This misleading variable name will be fixed soon
-let onInvidious;
-let onMobileYouTube;
+let onInvidious: boolean;
+let onMobileYouTube: boolean;
 
 //the video id of the last preview bar update
 let lastPreviewBarUpdate;
@@ -117,6 +117,9 @@ let submissionNotice: SubmissionNotice = null;
 // If there is an advert playing (or about to be played), this is true
 let isAdPlaying = false;
 
+// last response status
+let lastResponseStatus: number;
+
 // Contains all of the functions and variables needed by the skip notice
 const skipNoticeContentContainer: ContentContainer = () => ({
     vote,
@@ -163,6 +166,7 @@ function messageListener(request: Message, sender: unknown, sendResponse: (respo
             //send the sponsor times along with if it's found
             sendResponse({
                 found: sponsorDataFound,
+                status: lastResponseStatus,
                 sponsorTimes: sponsorTimes,
                 onMobileYouTube
             });
@@ -204,6 +208,7 @@ function messageListener(request: Message, sender: unknown, sendResponse: (respo
         case "refreshSegments":
             sponsorsLookup(false).then(() => sendResponse({
                 found: sponsorDataFound,
+                status: lastResponseStatus,
                 sponsorTimes: sponsorTimes,
                 onMobileYouTube
             }));
@@ -904,8 +909,11 @@ async function sponsorsLookup(keepOldSubmissions = true) {
             //otherwise the listener can handle it
             updatePreviewBar();
         }
-    } else if (response?.status === 404) {
-        retryFetch();
+    } else {
+        lastResponseStatus = response?.status;
+        if (lastResponseStatus === 404) {
+            retryFetch();
+        }
     }
 
     if (Config.config.isVip) {

src/messageTypes.ts

@@ -63,6 +63,7 @@ export type Message = BaseMessage & (DefaultMessage | BoolValueMessage | IsInfoF
 
 export interface IsInfoFoundMessageResponse {
     found: boolean;
+    status: number;
     sponsorTimes: SponsorTime[];
     onMobileYouTube: boolean;
 }
@@ -89,7 +90,7 @@ export type MessageResponse =
     | GetChannelIDResponse
     | SponsorStartResponse
     | IsChannelWhitelistedResponse
-    | Record<string, never>
+    | Record<never, never> // empty object response {}
     | VoteResponse;
 
 export interface VoteResponse {

src/popup.ts

@@ -367,8 +367,10 @@ async function runThePopup(messageListener?: MessageListener): Promise<void> {
                 PageElements.videoFound.innerHTML = chrome.i18n.getMessage("sponsorFound");
 
                 displayDownloadedSponsorTimes(request);
-            } else {
+            } else if (request.status == 404) {
                 PageElements.videoFound.innerHTML = chrome.i18n.getMessage("sponsor404");
+            } else {
+                PageElements.videoFound.innerHTML = chrome.i18n.getMessage("connectionError") + request.status;
             }
         }