feat: migrate download logic to new ShrutiBots API & YT_API_KEY configuration

app.py

@@ -26,8 +26,8 @@ BOT_TOKEN = os.getenv("TELEGRAM_BOT_TOKEN", "")
 CHAT_ID = int(os.getenv("TELEGRAM_CHAT_ID", "0"))
 HF_SECRET = os.getenv("HF_SECRET") or os.getenv("SECRET_TOKEN") or ""
 HF_TOKEN = os.getenv("HF_TOKEN", "")
-EXTERNAL_API_URL = os.getenv("EXTERNAL_API_URL", "https://shrutibots.site")
-API_KEY = os.getenv("API_KEY", "")
+EXTERNAL_API_URL = os.getenv("EXTERNAL_API_URL", "https://api01.shrutibots.site")
+YT_API_KEY = os.getenv("YT_API_KEY", "")
 
 # Initialize Pyrogram Client (MTProto - Bot Only)
 bot = Client(
@@ -103,18 +103,12 @@ def require_auth(f):
 async def fetch_download_url(video_id: str, media_type: str):
     try:
         async with aiohttp.ClientSession() as session:
-            url = f"{EXTERNAL_API_URL}/download?url={video_id}&type={media_type}"
-            if API_KEY:
-                url += f"&api_key={API_KEY}"
+            url = f"{EXTERNAL_API_URL}/download"
+            params = {"url": video_id, "type": media_type, "api_key": YT_API_KEY}
             headers = {"Authorization": f"Bearer {HF_TOKEN}"} if HF_TOKEN else {}
-            async with session.get(url, headers=headers) as resp:
+            async with session.get(url, params=params, headers=headers) as resp:
                 if resp.status == 200:
-                    data = await resp.json()
-                    token = data.get("download_token")
-                    if token:
-                        sep = "&" if "?" in video_id else "?"
-                        return f"{EXTERNAL_API_URL}/stream/{video_id}{sep}type={media_type}&token={token}"
-                    return data.get("url")
+                    return f"{EXTERNAL_API_URL}/download?url={video_id}&type={media_type}&api_key={YT_API_KEY}"
     except Exception as e:
         print(f"[Vault] Error fetching download URL: {str(e)}")
     return None