Added has prefix implementation (no config page)

src/config.ts

@@ -35,6 +35,7 @@ interface SBConfig {
     audioNotificationOnSkip,
     checkForUnlistedVideos: boolean,
     testingServer: boolean,
+    hashPrefix: boolean
 
     // What categories should be skipped
     categorySelections: CategorySelection[],
@@ -166,6 +167,7 @@ var Config: SBObject = {
         audioNotificationOnSkip: false,
         checkForUnlistedVideos: false,
         testingServer: false,
+        hashPrefix: false,
 
         categorySelections: [{
             name: "sponsor",

src/content.ts

@@ -618,12 +618,36 @@ function sponsorsLookup(id: string) {
         categories.push(categorySelection.name);
     }
 
-    utils.asyncRequestToServer('GET', "/api/skipSegments", {
-        videoID: id,
-        categories
-    }).then(async (response: FetchResponse) => {
+    // Check for hashPrefix setting
+    let getRequest;
+    if (Config.config.hashPrefix) {
+        getRequest = utils.asyncRequestToServer('GET', "/api/skipSegments/"+utils.getHash(id, 1).substr(0,4), {
+            categories
+        });
+    } else {
+        getRequest = utils.asyncRequestToServer('GET', "/api/skipSegments", {
+            videoID: id,
+            categories
+        });
+    }
+    getRequest.then(async (response: FetchResponse) => {
         if (response?.ok) {
-            let recievedSegments: SponsorTime[] = JSON.parse(response.responseText);
+            let getResult = JSON.parse(response.responseText);
+            if (Config.config.hashPrefix) {
+                getResult = getResult.filter((video) => {
+                    return video.videoID = id;
+                });
+                if (getResult.length === 1) {
+                    getResult = getResult[0].segments;
+                    if (getResult.length === 0) { // return if no regments found
+                        return;
+                    }
+                } else { // return if no video found
+                    return;
+                }
+            }
+
+            let recievedSegments: SponsorTime[] = getResult;
             if (!recievedSegments.length) {
                 console.error("[SponsorBlock] Server returned malformed response: " + JSON.stringify(recievedSegments));
                 return;

src/utils.ts

@@ -1,5 +1,6 @@
 import Config from "./config";
 import { CategorySelection, SponsorTime, FetchResponse } from "./types";
+import { sha256 } from 'js-sha256';
 
 import * as CompileConfig from "../config.json";
 
@@ -378,6 +379,20 @@ class Utils {
     isFirefox(): boolean {
         return typeof(browser) !== "undefined";
     }
+
+    getHash(value: string, times=5000): string {
+        if (times <= 0) return "";
+
+        for (let i = 0; i < times; i++) {
+            let hash = sha256.create();
+            hash.update(value);
+            hash.hex();
+            value = hash.toString();
+        }
+
+        return value;
+    }
+
 }
 
 export default Utils;