# Authentication Fix - Complete Summary

## Problem
Users were being logged out when navigating to content-planning due to 401 authentication errors. Requests were being made before Clerk authentication was ready, causing the frontend's 401 error handler to automatically sign out users.

## Root Causes

1. **Frontend Components**: Making API calls immediately on mount without checking if Clerk is loaded or user is authenticated
2. **EventSource Limitations**: EventSource API doesn't support custom headers, so streaming endpoints couldn't receive auth tokens
3. **API Service**: No guards to prevent requests when authentication isn't ready

## Solutions Applied

### 1. Frontend Component Authentication Checks ✅

**Files Updated:**
- `ContentStrategyTab.tsx`
- `ContentPlanningDashboard.tsx`

**Changes:**
- Added `useAuth` hook from Clerk
- Check `isLoaded` and `isSignedIn` before making API calls
- Show loading state while waiting for Clerk
- Show warning if user is not signed in

```typescript
const { isLoaded, isSignedIn } = useAuth();

useEffect(() => {
  if (!isLoaded) return;  // Wait for Clerk
  if (!isSignedIn) return; // Wait for authentication
  
  // Only make API calls if authenticated
  loadInitialData();
}, [isLoaded, isSignedIn]);
```

### 2. API Service Authentication Guards ✅

**File Updated:**
- `contentPlanningApi.ts`

**Changes:**
- Added authentication checks in `getStrategies()` method
- Check if `authTokenGetter` is set before making requests
- Check if token is available before making requests
- Throw descriptive errors if authentication isn't ready

```typescript
async getStrategies(userId?: number) {
  const { getAuthTokenGetter } = await import('../api/client');
  const tokenGetter = getAuthTokenGetter();
  
  if (!tokenGetter) {
    throw new Error('Authentication not ready. Please wait for sign-in to complete.');
  }
  
  const token = await tokenGetter();
  if (!token) {
    throw new Error('Authentication required. Please sign in to access content planning features.');
  }
  
  // Make request...
}
```

### 3. EventSource Authentication Support ✅

**Files Updated:**
- `contentPlanningApi.ts` (frontend)
- `streaming_endpoints.py` (backend)

**Changes:**
- Updated `streamStrategicIntelligence()` and `streamKeywordResearch()` to pass token as query parameter
- Updated backend streaming endpoints to use `get_current_user_with_query_token` instead of `get_current_user`
- Added `Request` import to streaming endpoints

**Frontend:**
```typescript
// EventSource doesn't support custom headers, so we pass token as query parameter
const url = `${this.baseURL}/enhanced-strategies/stream/strategic-intelligence?user_id=${userId || 1}&token=${encodeURIComponent(token)}`;
return new EventSource(url);
```

**Backend:**
```python
@router.get("/stream/strategic-intelligence")
async def stream_strategic_intelligence(
    request: Request,
    current_user: Dict[str, Any] = Depends(get_current_user_with_query_token),
    db: Session = Depends(get_db)
):
```

### 4. Client Module Export ✅

**File Updated:**
- `client.ts`

**Changes:**
- Added `getAuthTokenGetter()` export function to allow API services to check if auth is ready

```typescript
export const getAuthTokenGetter = (): (() => Promise<string | null>) | null => {
  return authTokenGetter;
};
```

## Endpoints Fixed

1. ✅ `GET /api/content-planning/enhanced-strategies/` - Regular HTTP (headers)
2. ✅ `GET /api/content-planning/enhanced-strategies/stream/strategic-intelligence` - EventSource (query param)
3. ✅ `GET /api/content-planning/enhanced-strategies/stream/keyword-research` - EventSource (query param)

## Authentication Flow

1. **Component Mounts** → Checks `isLoaded` and `isSignedIn`
2. **If Not Ready** → Shows loading state, doesn't make API calls
3. **If Ready** → Makes API calls
4. **API Service** → Checks if `authTokenGetter` is set and token is available
5. **If Not Ready** → Throws error (caught by component, shows message)
6. **If Ready** → Makes request with auth token
7. **Backend** → Validates token and processes request

## Result

✅ **No more premature API calls** - Components wait for authentication
✅ **No more 401 errors** - Requests only made when authenticated
✅ **No more unwanted logouts** - Authentication verified before API calls
✅ **EventSource support** - Streaming endpoints work with query parameter tokens
✅ **Better UX** - Loading states while waiting for authentication

## Testing Checklist

- [x] Component waits for Clerk to load before making API calls
- [x] Component checks if user is signed in before making API calls
- [x] API service checks if auth token is available
- [x] EventSource requests include token in query parameter
- [x] Backend streaming endpoints accept tokens from query parameters
- [x] Regular HTTP requests use Authorization header
- [x] Error handling for unauthenticated requests

## Status: ✅ COMPLETE

All authentication issues have been resolved. Users can now navigate to content-planning without being logged out.
