add /info /video

main.py

@@ -1,6 +1,7 @@
 import os
 import uuid
 import uvicorn
+from typing import Any, Literal, cast
 from fastapi import FastAPI, HTTPException, BackgroundTasks
 from fastapi.responses import FileResponse
 from pydantic import BaseModel
@@ -8,10 +9,28 @@ from yt_dlp import YoutubeDL
 
 app = FastAPI()
 
+
 # Input schema because we aren't savages
 class VideoRequest(BaseModel):
     url: str
 
+
+class VideoDownloadRequest(VideoRequest):
+    quality: Literal["best", "1080p", "720p", "480p", "360p"] = "best"
+
+
+class VideoInfoResponse(BaseModel):
+    id: str | None = None
+    title: str | None = None
+    uploader: str | None = None
+    duration: int | None = None
+    webpage_url: str | None = None
+    thumbnail: str | None = None
+    view_count: int | None = None
+    upload_date: str | None = None
+    extractor: str | None = None
+
+
 def cleanup(path: str):
     """Deletes the file after serving because I know you won't."""
     try:
@@ -20,50 +39,150 @@ def cleanup(path: str):
     except Exception as e:
         print(f"Failed to delete {path}: {e}")
 
+
+def get_video_format_selector(quality: str) -> str:
+    if quality == "best":
+        return "bestvideo+bestaudio/best"
+    height = quality.removesuffix("p")
+    return f"bestvideo[height<={height}]+bestaudio/best[height<={height}]"
+
+
 @app.post("/audio")
 async def download_audio(req: VideoRequest, background_tasks: BackgroundTasks):
     # Random ID so concurrent requests don't overwrite each other
     file_id = str(uuid.uuid4())
     output_template = f"/tmp/{file_id}.%(ext)s"
-    
+
     # yt-dlp config: best audio, force mp3 because whisper hates weird codecs
-    ydl_opts = {
-        'format': 'bestaudio/best',
-        'outtmpl': output_template,
-        'postprocessors': [{
-            'key': 'FFmpegExtractAudio',
-            'preferredcodec': 'mp3',
-            'preferredquality': '192',
-        }],
-        'quiet': True,
-        'no_warnings': True,
+    ydl_opts: dict[str, Any] = {
+        "format": "bestaudio/best",
+        "outtmpl": output_template,
+        "postprocessors": [
+            {
+                "key": "FFmpegExtractAudio",
+                "preferredcodec": "mp3",
+                "preferredquality": "192",
+            }
+        ],
+        "quiet": True,
+        "no_warnings": True,
     }
 
     try:
-        with YoutubeDL(ydl_opts) as ydl:
+        with YoutubeDL(cast(Any, ydl_opts)) as ydl:
             print(f"Yoinking audio from: {req.url}")
             info = ydl.extract_info(req.url, download=True)
             # yt-dlp might change extension post-processing, so we find the actual file
             # usually it's .mp3 if we forced it, but let's be safe
-            filename = ydl.prepare_filename(info).rsplit('.', 1)[0] + '.mp3'
+            filename = ydl.prepare_filename(info).rsplit(".", 1)[0] + ".mp3"
 
         if not os.path.exists(filename):
-            raise HTTPException(status_code=500, detail="Download failed, file missing. Blame YouTube.")
+            raise HTTPException(
+                status_code=500, detail="Download failed, file missing. Blame YouTube."
+            )
 
         # queue the deletion so it happens AFTER the response is sent
         background_tasks.add_task(cleanup, filename)
 
         return FileResponse(
-            path=filename, 
-            filename=f"{file_id}.mp3", 
-            media_type='audio/mpeg'
+            path=filename, filename=f"{file_id}.mp3", media_type="audio/mpeg"
         )
 
     except Exception as e:
         print(f"L: {str(e)}")
         raise HTTPException(status_code=400, detail=f"Failed to download: {str(e)}")
 
+
+@app.post("/info", response_model=VideoInfoResponse)
+async def get_video_info(req: VideoRequest):
+    ydl_opts: dict[str, Any] = {
+        "quiet": True,
+        "no_warnings": True,
+    }
+
+    try:
+        with YoutubeDL(cast(Any, ydl_opts)) as ydl:
+            info = ydl.extract_info(req.url, download=False)
+
+        if not info:
+            raise HTTPException(status_code=404, detail="No metadata found for URL")
+
+        return VideoInfoResponse(
+            id=info.get("id"),
+            title=info.get("title"),
+            uploader=info.get("uploader"),
+            duration=info.get("duration"),
+            webpage_url=info.get("webpage_url"),
+            thumbnail=info.get("thumbnail"),
+            view_count=info.get("view_count"),
+            upload_date=info.get("upload_date"),
+            extractor=info.get("extractor"),
+        )
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        print(f"Failed metadata fetch: {str(e)}")
+        raise HTTPException(
+            status_code=400, detail=f"Failed to fetch metadata: {str(e)}"
+        )
+
+
+@app.post("/video")
+async def download_video(req: VideoDownloadRequest, background_tasks: BackgroundTasks):
+    file_id = str(uuid.uuid4())
+    output_template = f"/tmp/{file_id}.%(ext)s"
+    ydl_opts: dict[str, Any] = {
+        "format": get_video_format_selector(req.quality),
+        "merge_output_format": "mp4",
+        "outtmpl": output_template,
+        "noplaylist": True,
+        "quiet": True,
+        "no_warnings": True,
+    }
+
+    try:
+        with YoutubeDL(cast(Any, ydl_opts)) as ydl:
+            print(f"Yoinking video from: {req.url} [{req.quality}]")
+            info = ydl.extract_info(req.url, download=True)
+            filename = None
+
+            requested_downloads = info.get("requested_downloads")
+            if isinstance(requested_downloads, list) and requested_downloads:
+                first = requested_downloads[0]
+                if isinstance(first, dict):
+                    filepath = first.get("filepath")
+                    if isinstance(filepath, str):
+                        filename = filepath
+
+            if not filename:
+                maybe_filename = info.get("_filename")
+                if isinstance(maybe_filename, str):
+                    filename = maybe_filename
+
+            if not filename:
+                filename = ydl.prepare_filename(info)
+
+        if not os.path.exists(filename):
+            raise HTTPException(
+                status_code=500, detail="Download failed, file missing. Blame YouTube."
+            )
+
+        background_tasks.add_task(cleanup, filename)
+
+        return FileResponse(
+            path=filename, filename=f"{file_id}.mp4", media_type="video/mp4"
+        )
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        print(f"Video download failed: {str(e)}")
+        raise HTTPException(
+            status_code=400, detail=f"Failed to download video: {str(e)}"
+        )
+
+
 if __name__ == "__main__":
     # Host on 0.0.0.0 so your docker container isn't useless
     uvicorn.run(app, host="0.0.0.0", port=8000)
-