# AeThex Notification System - Complete Implementation

## Overview

The notification system has been comprehensively implemented to provide real-time feedback for all major user actions. Notifications are created for:

1. **Achievements** - When users earn achievements
2. **Account/System Events** - Onboarding completion, profile updates, level ups
3. **Project/Team Activities** - Team/project creation, member additions, status changes
4. **OAuth/Integrations** - Account linking (Discord, etc.)

## Files Modified

### Client-Side Services

#### 1. `code/client/lib/aethex-database-adapter.ts`

**Achievement Notifications**

- Modified `aethexAchievementService.awardAchievement()`:
  - Sends notification: `🏆 Achievement Unlocked: {name}` with XP reward
  - Type: "success"

**Profile Update Notifications**

- Modified `aethexUserService.updateProfile()`:
  - Sends notification when `onboarded: true`
  - Message: `🎉 Welcome to AeThex! You've completed your profile setup. Let's get started!`
  - Type: "success"

**Level Up Notifications**

- Modified `aethexAchievementService.updateUserXPAndLevel()`:
  - Sends notification when level increases
  - Message: `⬆️ Level Up! You've reached level {newLevel}!`
  - Type: "success"

**Project Notifications**

- Modified `aethexProjectService.createProject()`:
  - Sends notification: `🚀 Project Created: {name}`
  - Type: "success"
- Modified `aethexProjectService.updateProject()`:
  - Sends notification on completion: `✅ Project Completed: {name}`
  - Sends notification on start: `⏱️ Project Started: {name}`
  - Type: "success" or "info"

#### 2. `code/client/lib/aethex-collab-service.ts`

**Team Notifications**

- Modified `aethexCollabService.createTeam()`:
  - Sends notification: `🎯 Team Created: {name}`
  - Type: "success"

**Team Member Notifications**

- Modified `aethexCollabService.addTeamMember()`:
  - Sends notification: `👥 Added to Team: {name}`
  - Type: "info"

**Project Member Notifications**

- Modified `aethexCollabService.addProjectMember()`:
  - Sends notification: `📌 Added to Project: {name}`
  - Type: "info"

#### 3. `code/client/pages/Onboarding.tsx`

**Onboarding Notifications**

- Added notification on onboarding completion
- Message: `🎉 Welcome to AeThex! You've completed your profile setup. Let's get started!`
- Type: "success"

### Backend API Endpoints

#### 1. `code/api/_notifications.ts` (NEW)

Central notification utility for backend processes:

- `createNotification(userId, type, title, message)` - Generic notification creator
- `notifyAccountLinked(userId, provider)` - For OAuth linking
- `notifyOnboardingComplete(userId)` - For onboarding completion

#### 2. `code/api/discord/oauth/callback.ts`

**Discord Account Linking**

- Added import: `notifyAccountLinked` from `_notifications`
- Sends notification when Discord is linked (both linking and login flows)
- Message: `🔗 Account Linked: Discord`
- Type: "success"

### Utility Module

#### `code/client/lib/notification-triggers.ts` (NEW)

Centralized notification trigger utilities for consistent notification handling across the app:

```typescript
notificationTriggers.achievementUnlocked(userId, name, xp);
notificationTriggers.teamCreated(userId, teamName);
notificationTriggers.addedToTeam(userId, teamName, role);
notificationTriggers.projectCreated(userId, projectName);
notificationTriggers.addedToProject(userId, projectName, role);
notificationTriggers.projectCompleted(userId, projectName);
notificationTriggers.projectStarted(userId, projectName);
notificationTriggers.levelUp(userId, newLevel);
notificationTriggers.onboardingComplete(userId);
notificationTriggers.accountLinked(userId, provider);
notificationTriggers.emailVerified(userId);
notificationTriggers.customNotification(userId, type, title, message);
```

## Notification Types

### Success (Green) 🟢

- Achievement unlocked
- Team/project created
- Project completed
- Level up
- Onboarding complete
- Account linked
- Email verified

### Info (Blue) 🔵

- Added to team/project
- Project started

### Warning (Yellow) 🟡

- (Available for future use)

### Error (Red) 🔴

- (Available for future use)

## Real-Time Features

All notifications are:

1. **Real-time** - Delivered via Supabase realtime subscription (in NotificationBell component)
2. **Persistent** - Stored in `notifications` table with timestamps
3. **Readable** - Users can mark notifications as read
4. **Displayed** - Show in NotificationBell dropdown with type-specific icons

## Notification Display

Notifications appear in:

1. **NotificationBell Component** (`code/client/components/notifications/NotificationBell.tsx`)

   - Dropdown with all notifications
   - Shows unread count badge
   - Real-time updates via subscription
   - Mark individual or all as read
   - Type-specific icons and colors

2. **Dashboard Notifications Tab** (`code/client/pages/Dashboard.tsx`)
   - Full notification history
   - Type filtering
   - Mark as read functionality

## Integration Points

### When Notifications Are Created

| Event                       | Service                  | Method                 | Type    |
| --------------------------- | ------------------------ | ---------------------- | ------- |
| Achievement earned          | AethexAchievementService | awardAchievement()     | success |
| Team created                | AethexCollabService      | createTeam()           | success |
| User added to team          | AethexCollabService      | addTeamMember()        | info    |
| Project created             | AethexProjectService     | createProject()        | success |
| User added to project       | AethexCollabService      | addProjectMember()     | info    |
| Project status: completed   | AethexProjectService     | updateProject()        | success |
| Project status: in_progress | AethexProjectService     | updateProject()        | info    |
| Level increased             | AethexAchievementService | updateUserXPAndLevel() | success |
| Onboarding completed        | Onboarding page          | finishOnboarding()     | success |
| Discord linked              | Discord OAuth            | callback.ts            | success |
| Profile updated (onboarded) | AethexUserService        | updateProfile()        | success |

## Error Handling

All notification creation is **non-blocking**:

- Wrapped in try-catch blocks
- Logged to console if failures occur
- Does not prevent main operation from completing
- User experience not affected if notifications fail

## Future Enhancements

Potential notification triggers for future implementation:

1. **Social Features**

   - New follower
   - Post liked/commented
   - Mentioned in post

2. **Collaboration**

   - Task assigned
   - Comment on project
   - Team invitation

3. **Notifications**

   - Email verification needed
   - Session expiration warning
   - Security alerts

4. **Opportunities**
   - New job matching user skills
   - Opportunity application accepted
   - Referral bonus awarded

## Testing the System

### Manual Testing Steps

1. **Achievement Notification**

   - Go to Dashboard
   - Trigger an achievement (e.g., create first project for "Portfolio Creator")
   - Check NotificationBell for 🏆 icon

2. **Team Notification**

   - Create a new team
   - Check NotificationBell for 🎯 icon

3. **Discord Linking**

   - Go to Dashboard > Connections
   - Link Discord account
   - Check NotificationBell for 🔗 icon

4. **Onboarding Notification**

   - Sign up new account
   - Complete onboarding
   - Should see 🎉 notification after finishing

5. **Real-time Test**
   - Open notification bell in one tab
   - Trigger action in another tab
   - Verify real-time update in first tab

### Monitoring

Check Supabase dashboard:

- Navigate to `notifications` table
- Filter by user_id to see all notifications for a user
- Verify type, title, message fields are populated correctly

## Notification Database Schema

```sql
CREATE TABLE notifications (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id UUID NOT NULL REFERENCES auth.users(id),
  type VARCHAR(50),
  title VARCHAR(255),
  message TEXT,
  read BOOLEAN DEFAULT false,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT now()
);

CREATE INDEX notifications_user_id_idx ON notifications(user_id);
CREATE INDEX notifications_user_created_idx ON notifications(user_id, created_at DESC);
```

## Performance Considerations

1. **Limit notifications** - Latest 20 notifications are fetched initially
2. **Real-time subscription** - Only listens for new inserts (not all changes)
3. **Non-blocking creation** - Notifications don't block main operations
4. **Batch operations** - Onboarding uses Promise.allSettled for parallel operations

## Backward Compatibility

- All existing code continues to work
- New notification calls are backward compatible
- No breaking changes to existing APIs
- Notifications are optional enhancements

## Deployment Checklist

- [x] Notification service utilities created
- [x] Achievement notifications implemented
- [x] Team/project notifications implemented
- [x] Account/system event notifications implemented
- [x] OAuth linking notifications implemented
- [x] Backend notification utilities created
- [x] Discord OAuth integration updated
- [x] Real-time subscription already working
- [x] NotificationBell component already exists
- [x] Database table already exists
- [ ] Test all notification flows end-to-end
- [ ] Monitor production for notification delivery

## Support

For issues or questions about the notification system:

1. Check NotificationBell component for display issues
2. Check Supabase console for database errors
3. Check browser console for JavaScript errors
4. Review this documentation for troubleshooting
