# Navbar Login Fix - WebSocket Authentication State Update

## Problem Description

After successfully logging in via Steam, the WebSocket would connect and receive user data from the server, but the navbar would not update to show the logged-in state. 

### Root Cause

The WebSocket `connected` message handler was receiving user data (steamId, username, userId) but was only logging it to the console. It was **not updating the auth store**, which the navbar component relies on to display authentication state.

**Console logs showed:**
```
🔵 AnnouncementBanner mounted - loading announcements...
WebSocket connected
WebSocket message received: { type: "connected", data: {...} }
Server confirmed connection: { steamId: "...", username: "...", userId: "..." }
```

But the navbar remained in logged-out state because `authStore.isAuthenticated` was still `false`.

---

## Solution

### Changes Made

#### 1. WebSocket Store (`frontend/src/stores/websocket.js`)
- **Modified the `"connected"` message handler** to call `authStore.fetchUser()` when the WebSocket connection is confirmed
- **Fixed duplicate `authStore` declarations** by declaring it once at the top of `handleMessage` function
- **Added debug logging** to trace the authentication flow

**Before:**
```javascript
case "connected":
  console.log("Server confirmed connection:", payload);
  break;
```

**After:**
```javascript
const handleMessage = (data) => {
  const { type, data: payload, timestamp } = data;
  const authStore = useAuthStore(); // Declared once at top

  switch (type) {
    case "connected":
      console.log("🟢 WebSocket received 'connected' message:", payload);
      // Fetch updated user data from the auth endpoint
      console.log("🔵 Calling authStore.fetchUser() from WebSocket connected handler");
      authStore.fetchUser();
      break;
    
    case "balance_update":
      // Now uses authStore declared at top
      if (payload?.balance !== undefined) {
        authStore.updateBalance(payload.balance);
      }
      break;
    // ... rest of cases
  }
};
```

#### 2. Auth Store (`frontend/src/stores/auth.js`)
- **Added debug logging** to trace authentication initialization and user fetch operations

**Added logs:**
```javascript
console.log("🔵 fetchUser called - fetching user from /api/auth/me");
console.log("✅ fetchUser response:", response.data);
console.log("✅ Setting user in auth store:", response.data.user);
console.log("🔵 fetchUser complete - isAuthenticated:", isAuthenticated.value);
console.log("🔵 Auth store initialize called - isInitialized:", isInitialized.value);
```

---

## How It Works Now

### Authentication Flow After Steam Login

1. **User clicks "Login to Steam"** button
   - Frontend redirects to: `${VITE_API_URL}/api/auth/steam`

2. **Steam OAuth flow completes**
   - Backend receives callback from Steam
   - Backend creates session and sets HTTP-only cookie
   - Backend redirects user back to frontend

3. **Frontend loads** (`App.vue` `onMounted`)
   - `authStore.initialize()` → calls `fetchUser()` → requests `/api/auth/me`
   - `wsStore.connect()` → establishes WebSocket connection

4. **WebSocket connects successfully**
   - Backend sends `{ type: "connected", data: { steamId, username, userId } }`

5. **WebSocket receives "connected" message** ✨ **NEW**
   - Handler calls `authStore.fetchUser()`
   - Fetches user data from `/api/auth/me` with credentials
   - Updates `authStore.user` and sets `isAuthenticated = true`

6. **Navbar reactively updates** 🎉
   - `authStore.isAuthenticated` changes from `false` → `true`
   - Vue's reactivity triggers navbar to show user menu, avatar, balance, etc.

---

## Deployment Instructions

### 1. Build the Frontend

```bash
cd frontend
npm run build
```

**Expected output:**
```
✓ 1588 modules transformed.
✓ built in 2.80s
```

### 2. Deploy to Production

**Option A: Manual deployment on server**
```bash
# SSH into your server
ssh user@your-server

# Navigate to project
cd /path/to/TurboTrades/frontend

# Pull latest changes
git pull origin main

# Build
npm install  # if dependencies changed
npm run build

# Copy to web root
sudo cp -r dist/* /var/www/html/turbotrades/
```

**Option B: CI/CD Pipeline**
```bash
# Commit and push changes
git add frontend/src/stores/websocket.js frontend/src/stores/auth.js
git commit -m "Fix navbar not updating after Steam login - WebSocket auth state sync"
git push origin main

# Your CI/CD pipeline will automatically:
# 1. Pull changes
# 2. Build frontend
# 3. Deploy to production
```

### 3. Clear Browser Cache

After deployment, users need to hard-refresh to get the new JavaScript bundle:

- **Windows/Linux:** `Ctrl + Shift + R` or `Ctrl + F5`
- **Mac:** `Cmd + Shift + R`
- **Or use Incognito/Private mode** for testing

---

## Testing the Fix

### 1. Open Browser Console

Press `F12` to open DevTools and go to Console tab.

### 2. Clear Cookies and Storage

In DevTools:
- Go to **Application** tab
- Click **Clear storage** → **Clear site data**

### 3. Attempt Login

Click "Login to Steam" button and complete authentication.

### 4. Watch Console Logs

You should see this sequence:

```
🔵 Auth store initialize called - isInitialized: false
🔵 fetchUser called - fetching user from /api/auth/me
✅ fetchUser response: { success: true, user: {...} }
✅ Setting user in auth store: { steamId: "...", username: "...", ... }
🔵 fetchUser complete - isAuthenticated: true

Connecting to WebSocket: wss://api.turbotrades.dev/ws
WebSocket connected
🟢 WebSocket received 'connected' message: { steamId: "...", username: "...", userId: "..." }
🔵 Calling authStore.fetchUser() from WebSocket connected handler
🔵 fetchUser called - fetching user from /api/auth/me
✅ fetchUser response: { success: true, user: {...} }
✅ Setting user in auth store: { steamId: "...", username: "...", ... }
🔵 fetchUser complete - isAuthenticated: true
```

### 5. Verify Navbar Updates

The navbar should now show:
- ✅ Your Steam avatar
- ✅ Your username
- ✅ Your balance with deposit button
- ✅ User dropdown menu with Profile, Inventory, etc.

---

## Rollback Plan

If issues occur after deployment:

### Quick Rollback
```bash
# Revert the commits
git revert HEAD~2..HEAD

# Rebuild and redeploy
cd frontend
npm run build
sudo cp -r dist/* /var/www/html/turbotrades/
```

### Remove Debug Logs (Production Cleanup)

Once confirmed working, you may want to remove the verbose debug logs:

**In `frontend/src/stores/auth.js`** - remove all `console.log` statements added

**In `frontend/src/stores/websocket.js`** - remove or reduce debug logs:
```javascript
case "connected":
  // Keep minimal logging
  console.log("WebSocket connected");
  authStore.fetchUser();
  break;
```

Then rebuild and redeploy.

---

## Additional Notes

### Why Two `fetchUser()` Calls?

You might notice `fetchUser()` is called twice:

1. **On App Mount** (`App.vue` → `authStore.initialize()`)
   - Handles the case where user already has a valid session
   - Runs immediately when page loads

2. **On WebSocket Connected** (new addition)
   - Handles the case where user just logged in via Steam
   - Ensures auth state is fresh after Steam OAuth redirect
   - Provides a fallback if the initial fetch happened before the session cookie was set

This redundancy is intentional and ensures authentication works reliably in all scenarios.

### Session Persistence

The authentication uses HTTP-only cookies set by the backend. These persist across:
- Page refreshes
- Browser restarts (unless expired)
- Tab closures

The WebSocket connection authenticates using the same session cookie.

---

## Related Files

- `frontend/src/stores/websocket.js` - WebSocket message handling
- `frontend/src/stores/auth.js` - Authentication state management
- `frontend/src/components/NavBar.vue` - Navbar component (reactive to auth state)
- `frontend/src/App.vue` - App initialization flow
- `backend/routes/auth.js` - Steam OAuth and session management

---

## Troubleshooting

### Navbar Still Not Updating

1. **Clear browser cache completely** (not just refresh)
2. **Check browser console for errors**
3. **Verify `/api/auth/me` returns user data:**
   ```bash
   curl -s https://api.turbotrades.dev/api/auth/me -b cookies.txt | jq
   ```
4. **Check WebSocket connection:**
   - Look for "WebSocket connected" in console
   - Verify no CORS errors

### "fetchUser called" But No Response

- **Backend issue:** Check PM2 logs
  ```bash
  pm2 logs turbotrades-backend --lines 50
  ```
- **CORS issue:** Check for CORS errors in browser console
- **Session cookie not set:** Check backend logs for Steam OAuth errors

### WebSocket Doesn't Receive "connected" Message

- **Backend WebSocket handler issue:** Check `backend/services/websocket.js`
- **Nginx not proxying WS correctly:** Verify Nginx config has:
  ```nginx
  location /ws {
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_pass http://127.0.0.1:3000/ws;
  }
  ```

---

## Success Criteria

✅ User can click "Login to Steam" and complete OAuth flow  
✅ Upon redirect back to site, navbar shows logged-in state  
✅ User's avatar, username, and balance are displayed  
✅ WebSocket connects and shows user data in console  
✅ User can access protected routes (Inventory, Profile, etc.)  
✅ No console errors related to authentication or WebSocket  

---

**Status:** Ready for deployment  
**Last Updated:** 2025-01-10  
**Build Tested:** ✅ Success  
**Files Modified:** 2 (websocket.js, auth.js)