Make simple backend

.gitignore

@@ -0,0 +1,3 @@
+.env
+.venv/
+__pycache__/

main.py

@@ -1,6 +1,14 @@
-def main():
-    print("Hello from ytlean!")
+from fastapi import FastAPI
+import utils
+
+app = FastAPI()
 
 
-if __name__ == "__main__":
-    main()
+@app.get("/video")
+def get_video(channel_name: str):
+    uploads = utils.get_uploads_playlist(channel_name)
+    videos = utils.get_all_videos(uploads)
+
+    return {
+        "id": videos[0]
+    }

utils.py

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+from dotenv import load_dotenv
+import os
+import requests
+
+load_dotenv()
+YOUTUBE_API_KEY = os.getenv("YOUTUBE_API_KEY")
+YOUTUBE_API_BASE = "https://www.googleapis.com/youtube/v3"
+
+
+def get_uploads_playlist(channel_name: str):
+    url = f"{YOUTUBE_API_BASE}/channels"
+    params = {
+        "forHandle": channel_name,
+        "key": YOUTUBE_API_KEY
+    }
+
+    res = requests.get(url, params)
+    channel_id = res.json().get("items")[0]["id"]
+
+    return f"UULF{channel_id[2:]}"
+
+
+def get_all_videos(playlist_id: str):
+    url = f"{YOUTUBE_API_BASE}/playlistItems"
+    params = {
+        "playlistId": playlist_id,
+        "part": "contentDetails",
+        "maxResults": 50,
+        "key": YOUTUBE_API_KEY
+    }
+
+    res = requests.get(url, params)
+    items = res.json().get("items")
+
+    return [i["contentDetails"]["videoId"] for i in items]