From 5bd767b862bec2e1a26304be6fa8f6dd8c25ec7f Mon Sep 17 00:00:00 2001
From: Apollo Nargang <CoffeeCoder1@outlook.com>
Date: Thu, 8 May 2025 23:10:04 -0400
Subject: [PATCH] [TikTokBridge] Use oEmbed for video metadata (#4514)

* [TikTokBridge] Use oEmbed for video metadata

Fetches oEmbed-formatted metadata for videos through the TikTok API to
provide post titles, thumbnails, and authors. This hasn't yet been
tested, so it's possible it doesn't work.

* [TikTokBridge] Add back view count parsing

oops

* [TikTokBridge] Prepend www to the oEmbed API endpoint URL

The non-www URL resulted in a 301 redirect to the www URL, so this just
skips that redirect, improving performance a bit and hopefully helping
with the 400 errors.

* [TikTokBridge] Retry failed OEmbed requests

If an OEmbed request fails, retry a few times, waiting a bit in between
each retry. This should fix the problem for the most part, since I think
the problem was related to some sort of rate limit (it isn't mentioned
in the docs, but it seems to only happen when sending large quantities
of sequential requests).
---
 bridges/TikTokBridge.php | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/bridges/TikTokBridge.php b/bridges/TikTokBridge.php
index 43a9cb31..ff3bfbc2 100644
--- a/bridges/TikTokBridge.php
+++ b/bridges/TikTokBridge.php
@@ -21,6 +21,8 @@ class TikTokBridge extends BridgeAbstract
             'context' => 'By user', 'username' => '@tiktok'
         ]
     ];
+    const OEMBED_RETRY_COUNT = 20;
+    const OEMBED_RETRY_DELAY = 0.1;
 
     const CACHE_TIMEOUT = 900; // 15 minutes
 
@@ -42,16 +44,33 @@ class TikTokBridge extends BridgeAbstract
             $parsedUrl = parse_url($href);
             $url = $parsedUrl['scheme'] . '://' . $parsedUrl['host'] . '/' . ltrim($parsedUrl['path'], '/');
 
-            $image = $video->find('video', 0)->poster;
+            // Sometimes the API fails to return data for a second, so try a few times
+            $attempts = 0;
+	        do {
+                try {
+                    // Fetch the video embed data from the OEmbed API
+                    $videoEmbedResponse = getContents('https://www.tiktok.com/oembed?url=' . $url);
+                } catch (Exception $e) {
+                    $attempts++;
+                    sleep($OEMBED_RETRY_DELAY);
+                    continue;
+                }
+                break;
+            } while($attempts < $OEMBED_RETRY_COUNT);
+            $videoEmbedData = json_decode($videoEmbedResponse);
+
+            $title = $videoEmbedData->title;
+            $image = $videoEmbedData->thumbnail_url;
             $views = $video->find('div[data-e2e=common-Video-Count]', 0)->plaintext;
 
             $enclosures = [$image, $authorProfilePicture];
 
             $item['uri'] = $url;
-            $item['title'] = 'Video';
-            $item['author'] = '@' . $author;
+            $item['title'] = $title;
+            $item['author'] = '@' . $videoEmbedData->author_unique_id;
             $item['enclosures'] = $enclosures;
             $item['content'] = <<<EOD
+<p>$title</p>
 <a href="{$url}"><img src="{$image}"/></a>
 <p>{$views} views<p><br/>
 EOD;