From f2a855901a203f394fb63ac8514095b313286029 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Thu, 4 Jul 2024 13:57:15 +0300
Subject: [PATCH] Add linkPreviewTypeAudio/linkPreviewTypeVideo.

---
 td/generate/scheme/td_api.tl    | 18 ++++++++++++++++++
 td/telegram/WebPagesManager.cpp | 30 +++++++++++++++++++++++++++---
 2 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 2f187c45e..a53533648 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -2553,6 +2553,14 @@ webPageInstantView page_blocks:vector<PageBlock> view_count:int32 version:int32
 
 //@class LinkPreviewType @description Describes type of a link preview
 
+//@description The link is a link to an audio
+//@url URL of the audio; may be empty if none
+//@mime_type MIME type of the audio file
+//@audio Description of the audio; may be null if unknown
+//@duration Duration of the audio, in seconds; 0 if unknown
+//@author Author of the audio
+linkPreviewTypeAudio url:string mime_type:string audio:audio duration:int32 author:string = LinkPreviewType;
+
 //@description The link is a link to a background. Link preview title and description are available only for filled backgrounds @document Document with the background; may be null for filled backgrounds
 linkPreviewTypeBackground document:document = LinkPreviewType;
 
@@ -2603,6 +2611,16 @@ linkPreviewTypeTheme documents:vector<document> = LinkPreviewType;
 //@description The link is a link to a user @photo Photo of the user; may be null if none @is_bot True, if the user is a bot
 linkPreviewTypeUser photo:chatPhoto is_bot:Bool = LinkPreviewType;
 
+//@description The link is a link to a video
+//@url URL of the video; may be empty if none
+//@mime_type MIME type of the video file
+//@video Description of the video; may be null if unknown
+//@width Expected width of the preview
+//@height Expected height of the preview
+//@duration Duration of the video, in seconds; 0 if unknown
+//@author Author of the video
+linkPreviewTypeVideo url:string mime_type:string video:video width:int32 height:int32 duration:int32 author:string = LinkPreviewType;
+
 //@description The link is a link to a video chat
 //@photo Photo of the chat with the video chat; may be null if none
 //@is_live_stream True, if the video chat is expected to be a live stream in a channel or a broadcast group
diff --git a/td/telegram/WebPagesManager.cpp b/td/telegram/WebPagesManager.cpp
index 8c27eec89..c5cddcb53 100644
--- a/td/telegram/WebPagesManager.cpp
+++ b/td/telegram/WebPagesManager.cpp
@@ -1436,10 +1436,34 @@ td_api::object_ptr<td_api::LinkPreviewType> WebPagesManager::get_link_preview_ty
             web_page->embed_url_, web_page->duration_, web_page->author_, web_page->embed_dimensions_.width,
             web_page->embed_dimensions_.height);
       }
-      LOG(ERROR) << "Have type = " << web_page->type_ << " for embedded " << web_page->url_;
-      return td_api::make_object<td_api::linkPreviewTypeOther>(web_page->type_);
+    } else {
+      // ordinary audio/video
+      if (web_page->type_ == "audio") {
+        auto audio = web_page->document_.type == Document::Type::Audio
+                         ? td_->audios_manager_->get_audio_object(web_page->document_.file_id)
+                         : nullptr;
+        if (audio != nullptr || !web_page->embed_url_.empty()) {
+          return td_api::make_object<td_api::linkPreviewTypeAudio>(
+              web_page->embed_url_, web_page->embed_type_, std::move(audio), web_page->duration_, web_page->author_);
+        } else {
+          return td_api::make_object<td_api::linkPreviewTypeOther>(web_page->type_);
+        }
+      }
+      if (web_page->type_ == "video") {
+        auto video = web_page->document_.type == Document::Type::Video
+                         ? td_->videos_manager_->get_video_object(web_page->document_.file_id)
+                         : nullptr;
+        if (video != nullptr || !web_page->embed_url_.empty()) {
+          return td_api::make_object<td_api::linkPreviewTypeVideo>(
+              web_page->embed_url_, web_page->embed_type_, std::move(video), web_page->embed_dimensions_.width,
+              web_page->embed_dimensions_.height, web_page->duration_, web_page->author_);
+        } else {
+          return td_api::make_object<td_api::linkPreviewTypeOther>(web_page->type_);
+        }
+      }
     }
-    // ordinary audio/video
+    LOG(ERROR) << "Have type = " << web_page->type_ << " for embedded " << web_page->url_;
+    return td_api::make_object<td_api::linkPreviewTypeOther>(web_page->type_);
   }
   // TODO LOG(ERROR) << "Receive link preview of unsupported type " << web_page->type_;
   return td_api::make_object<td_api::linkPreviewTypeOther>(web_page->type_);