Change GIF_TRANSCODE_DOMAIN to GIF_TRANSCODE_DOMAIN_LIST

FixTweet · Aug 6, 2024 · c1ef1f3 · c1ef1f3
1 parent 174cc65
commit c1ef1f3
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Showing 5 changed files with 22 additions and 6 deletions.
diff --git a/.env.example b/.env.example
@@ -15,4 +15,4 @@ SENTRY_DSN = ""
 SENTRY_AUTH_TOKEN = ""
 SENTRY_ORG = ""
 SENTRY_PROJECT = ""
-GIF_TRANSCODE_DOMAIN = "gif.fxtwitter.com"
+GIF_TRANSCODE_DOMAIN_LIST = "gif.fxtwitter.com"
diff --git a/esbuild.config.mjs b/esbuild.config.mjs
@@ -46,7 +46,7 @@ let envVariables = [
   'MOSAIC_DOMAIN_LIST',
   'API_HOST_LIST',
   'SENTRY_DSN',
-  'GIF_TRANSCODE_DOMAIN'
+  'GIF_TRANSCODE_DOMAIN_LIST'
 ];
 
 // Create defines for all environment variables

diff --git a/jestconfig.json b/jestconfig.json
@@ -18,7 +18,7 @@
     "REDIRECT_URL": "https://github.com/FixTweet/FxTwitter",
     "EMBED_URL": "https://github.com/FixTweet/FxTwitter",
     "RELEASE_NAME": "fixtweet-test",
-    "GIF_TRANSCODE_DOMAIN": "gif.fxtwitter.com",
+    "GIF_TRANSCODE_DOMAIN_LIST": "gif.fxtwitter.com",
     "SENTRY_DSN": null
   },
   "testRegex": "/test/.*\\.test\\.ts$",

diff --git a/src/render/video.ts b/src/render/video.ts
@@ -3,6 +3,22 @@ import { Constants } from '../constants';
 import { Experiment, experimentCheck } from '../experiments';
 import { handleQuote } from '../helpers/quote';
 
+const getGIFTranscodeDomain = (twitterId: string): string | null => {
+  const gifTranscoderList = Constants.GIF_TRANSCODE_DOMAIN_LIST;
+
+  if (gifTranscoderList.length === 0) {
+    return null;
+  }
+
+  let hash = 0;
+  for (let i = 0; i < twitterId.length; i++) {
+    const char = twitterId.charCodeAt(i);
+    hash = (hash << 5) - hash + char;
+  }
+  return gifTranscoderList[Math.abs(hash) % gifTranscoderList.length];
+};
+
+
 export const renderVideo = (
   properties: RenderProperties,
   video: APIVideo
@@ -53,13 +69,13 @@ export const renderVideo = (
   let url = video.url;
 
   if (
-    experimentCheck(Experiment.TRANSCODE_GIFS, !!Constants.GIF_TRANSCODE_DOMAIN) &&
+    experimentCheck(Experiment.TRANSCODE_GIFS, !!Constants.GIF_TRANSCODE_DOMAIN_LIST) &&
     !userAgent?.includes('Telegram') &&
     video.type === 'gif'
   ) {
     url = video.url.replace(
       Constants.TWITTER_VIDEO_BASE,
-      `https://${Constants.GIF_TRANSCODE_DOMAIN}`
+      `https://${getGIFTranscodeDomain(status.id)}`
     );
     console.log('We passed checks for transcoding GIFs, feeding embed url', url);
   }

diff --git a/src/types/env.d.ts b/src/types/env.d.ts
@@ -11,7 +11,7 @@ declare const EMBED_URL: string;
 declare const REDIRECT_URL: string;
 declare const MOSAIC_DOMAIN_LIST: string;
 declare const API_HOST_LIST: string;
-declare const GIF_TRANSCODE_DOMAIN: string;
+declare const GIF_TRANSCODE_DOMAIN_LIST: string;
 
 declare const SENTRY_DSN: string;
 declare const RELEASE_NAME: string;