Initial commit

app/dependencies.py

@@ -0,0 +1,82 @@
+from fastapi import Depends, HTTPException, status, Header
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from typing import Optional
+from app.database import get_supabase
+from app.config import settings
+import logging
+
+logger = logging.getLogger(__name__)
+security = HTTPBearer(auto_error=False)
+
+
+async def get_current_user(
+    credentials: Optional[HTTPAuthorizationCredentials] = Depends(security),
+):
+    """Extract and verify the current user from Supabase JWT"""
+    if not credentials:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Not authenticated",
+        )
+
+    token = credentials.credentials
+    supabase = get_supabase()
+
+    try:
+        response = supabase.auth.get_user(token)
+        if not response or not response.user:
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="Invalid or expired token",
+            )
+        return response.user
+    except Exception as e:
+        logger.error(f"Auth error: {e}")
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid or expired token",
+        )
+
+
+async def get_optional_user(
+    credentials: Optional[HTTPAuthorizationCredentials] = Depends(security),
+):
+    """Optional auth - returns None if not authenticated"""
+    if not credentials:
+        return None
+    try:
+        return await get_current_user(credentials)
+    except HTTPException:
+        return None
+
+
+async def get_user_subscription(user=Depends(get_current_user)):
+    """Get user's subscription plan"""
+    supabase = get_supabase()
+    try:
+        result = (
+            supabase.table("subscriptions")
+            .select("*")
+            .eq("user_id", user.id)
+            .eq("status", "active")
+            .execute()
+        )
+        if result.data:
+            return result.data[0]
+        return {"plan": "free", "status": "active", "user_id": user.id}
+    except Exception:
+        return {"plan": "free", "status": "active", "user_id": user.id}
+
+
+async def require_plan(min_plan: str, user=Depends(get_current_user)):
+    """Require a minimum plan level"""
+    plan_order = ["free", "starter", "pro", "enterprise"]
+    subscription = await get_user_subscription(user)
+    user_plan = subscription.get("plan", "free")
+
+    if plan_order.index(user_plan) < plan_order.index(min_plan):
+        raise HTTPException(
+            status_code=status.HTTP_402_PAYMENT_REQUIRED,
+            detail=f"This feature requires {min_plan} plan or higher",
+        )
+    return user