Added MP4 audio embeds for Discord in AudioEmbed.py

Backend/Main.py

@@ -18,6 +18,7 @@ from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import FileResponse, HTMLResponse, PlainTextResponse, StreamingResponse
 from starlette.background import BackgroundTask
 
+import AudioEmbed
 from Auth import (
     CreateSession,
     DeleteSession,
@@ -926,6 +927,28 @@ def GetPublicMediaEndpoint(RootName: str, FilePath: str, request: Request):
     return StreamBinaryFile(ResolvedPath, request.headers.get("range"))
 
 
+@Application.get("/public/embed/{RootName}/{FilePath:path}")
+def GetPublicEmbedEndpoint(RootName: str, FilePath: str, request: Request):
+    """A public audio file as an MP4 (still picture + track) for link embeds;
+    see AudioEmbed.py."""
+    if not IsPathAccessible(RootName, FilePath, "", [GuestGroupName]):
+        raise HTTPException(status_code=404, detail="Not found.")
+
+    try:
+        ResolvedPath = ResolvePath(RootName, FilePath)
+    except ValueError as Error:
+        raise HTTPException(status_code=400, detail=str(Error))
+
+    if not ResolvedPath.is_file() or ClassifyFile(ResolvedPath) != "audio":
+        raise HTTPException(status_code=404, detail="Not an audio file.")
+
+    VideoPath = AudioEmbed.GetEmbedVideo(ResolvedPath)
+    if VideoPath is None:
+        raise HTTPException(status_code=503, detail="Couldn't make the embed video.")
+
+    return StreamBinaryFile(VideoPath, request.headers.get("range"))
+
+
 def GetForwardedScheme(request: Request) -> str:
     ForwardedProto = request.headers.get("x-forwarded-proto")
     if ForwardedProto: