feat: add geolocation to download logs (country, city via ip-api.com)

backend/app/database.py

@@ -32,3 +32,13 @@ async def init_db():
         await conn.execute(text(
             "CREATE INDEX IF NOT EXISTS ix_download_logs_downloaded_at ON download_logs (downloaded_at)"
         ))
+        # Migrate: add geo columns to existing download_logs table (idempotent)
+        for col_def in [
+            "ALTER TABLE download_logs ADD COLUMN country_code VARCHAR(8) DEFAULT ''",
+            "ALTER TABLE download_logs ADD COLUMN country VARCHAR(128) DEFAULT ''",
+            "ALTER TABLE download_logs ADD COLUMN city VARCHAR(128) DEFAULT ''",
+        ]:
+            try:
+                await conn.execute(text(col_def))
+            except Exception:
+                pass  # Column already exists

backend/app/models.py

@@ -42,6 +42,9 @@ class DownloadLog(Base):
     user_agent = Column(Text, default="")
     browser = Column(String(64), default="")    # Chrome / Firefox / Safari / Edge / …
     device = Column(String(32), default="")     # desktop / mobile / tablet / bot
+    country_code = Column(String(8), default="")   # e.g. CN
+    country = Column(String(128), default="")      # e.g. China
+    city = Column(String(128), default="")         # e.g. Shanghai
     downloaded_at = Column(DateTime, default=datetime.utcnow, index=True)
 
     video = relationship("Video", back_populates="logs")

backend/app/routes/download.py

@@ -63,18 +63,42 @@ def _client_ip(request: Request) -> str:
     return ""
 
 
+async def _geo_lookup(ip: str) -> tuple[str, str, str]:
+    """Return (country_code, country, city) via ip-api.com. Falls back to empty strings."""
+    if not ip or ip in ("127.0.0.1", "::1"):
+        return "", "", ""
+    try:
+        import httpx
+        async with httpx.AsyncClient(timeout=5) as client:
+            res = await client.get(
+                f"http://ip-api.com/json/{ip}",
+                params={"fields": "status,countryCode,country,city"},
+            )
+            data = res.json()
+            if data.get("status") == "success":
+                return data.get("countryCode", ""), data.get("country", ""), data.get("city", "")
+    except Exception as e:
+        logger.debug(f"Geo lookup failed for {ip}: {e}")
+    return "", "", ""
+
+
 async def _log_download(video_id: int, request: Request):
-    """Write a DownloadLog entry (fire-and-forget)."""
+    """Write a DownloadLog entry with geo info (fire-and-forget)."""
     try:
         ua = request.headers.get("user-agent", "")
         browser, device = _parse_ua(ua)
+        ip = _client_ip(request)
+        country_code, country, city = await _geo_lookup(ip)
         async with async_session() as db:
             db.add(DownloadLog(
                 video_id=video_id,
-                ip=_client_ip(request),
+                ip=ip,
                 user_agent=ua[:512],
                 browser=browser,
                 device=device,
+                country_code=country_code,
+                country=country,
+                city=city,
                 downloaded_at=datetime.utcnow(),
             ))
             await db.commit()

backend/app/schemas.py

@@ -95,6 +95,9 @@ class DownloadLogInfo(BaseModel):
     user_agent: str
     browser: str
     device: str
+    country_code: str = ""
+    country: str = ""
+    city: str = ""
     downloaded_at: datetime
 
     class Config: