271 lines
6.4 KiB
Markdown
271 lines
6.4 KiB
Markdown
# Device Management Implementation - Changelog
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## Summary
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Enhanced the auth service to properly support multi-device login with device management capabilities. **One phone number = One account**, but that account can be logged in from **multiple devices simultaneously**.
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---
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## Changes Made
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### 1. Enhanced Verify OTP Endpoint (`/auth/verify-otp`)
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**Added:**
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- New device detection logic
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- Audit logging for all login attempts
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- Response fields: `is_new_device`, `is_new_account`, `active_devices_count`
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**Response now includes:**
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```json
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{
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"user": { ... },
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"access_token": "...",
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"refresh_token": "...",
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"needs_profile": true,
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"is_new_device": false, // NEW
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"is_new_account": false, // NEW
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"active_devices_count": 2 // NEW
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}
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```
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**Benefits:**
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- Mobile app can show security notifications for new devices
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- Track account creation vs. existing account login
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- Display active device count in UI
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---
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### 2. Enhanced Refresh Token Endpoint (`/auth/refresh`)
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**Added:**
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- Updates `user_devices.last_seen_at` on token refresh
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- Tracks device activity for monitoring
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**Benefits:**
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- Identify active vs. inactive devices
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- Better device management insights
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---
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### 3. New User Endpoints (`/users/me/*`)
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#### GET `/users/me`
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- Returns user info with `active_devices_count`
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- Includes account creation date and last login time
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#### GET `/users/me/devices`
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- Lists all active devices for the user
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- Shows device metadata (platform, model, OS, etc.)
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- Includes first_seen_at and last_seen_at timestamps
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#### DELETE `/users/me/devices/:device_id`
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- Revokes/logs out a specific device
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- Revokes all refresh tokens for that device
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- Logs the action in audit table
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#### POST `/users/me/logout-all-other-devices`
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- Logs out all devices except the current one
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- Requires `current_device_id` in header or body
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- Returns count of revoked devices
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---
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### 4. Audit Logging
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**Added comprehensive logging:**
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- Login attempts (success/failure)
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- Device revocations
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- Logout actions
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- All events logged to `auth_audit` table with metadata
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**Audit fields:**
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- `action`: 'login', 'device_revoked', 'logout_all_other_devices'
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- `status`: 'success', 'failed'
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- `device_id`: Device identifier
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- `ip_address`: Client IP
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- `user_agent`: Client user agent
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- `meta`: JSONB with additional context (is_new_device, platform, etc.)
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---
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## Database Changes
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### No Schema Changes Required
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- All features use existing tables:
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- `users` (already has UNIQUE constraint on phone_number)
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- `user_devices` (already tracks devices per user)
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- `auth_audit` (already exists for logging)
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- `refresh_tokens` (already tracks tokens per device)
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### Existing Constraints Work Perfectly
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- `phone_number UNIQUE` → One account per phone number ✅
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- `(user_id, device_identifier) UNIQUE` → One device record per user-device combo ✅
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---
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## Security Improvements
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### ✅ New Device Detection
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- Automatically flags new device logins
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- Mobile app can show security alerts
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- Logged in audit table
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### ✅ Device Activity Tracking
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- `last_seen_at` updated on token refresh
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- Helps identify abandoned devices
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- Better security monitoring
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### ✅ Device Management
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- Users can see all active devices
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- Users can revoke specific devices
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- Users can logout all other devices (security feature)
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### ✅ Audit Trail
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- All authentication events logged
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- Can track suspicious activity
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- Compliance and security auditing
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---
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## API Usage Examples
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### Login from New Device
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```bash
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POST /auth/verify-otp
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{
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"phone_number": "+919876543210",
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"code": "123456",
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"device_id": "new-device-123",
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"device_info": { "platform": "android" }
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}
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Response:
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{
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"is_new_device": true,
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"is_new_account": false,
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"active_devices_count": 2
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}
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```
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### List Active Devices
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```bash
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GET /users/me/devices
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Authorization: Bearer <access_token>
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Response:
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{
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"devices": [
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{
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"device_identifier": "device-1",
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"device_platform": "android",
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"last_seen_at": "2024-01-15T10:30:00Z",
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"is_active": true
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}
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]
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}
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```
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### Revoke Device
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```bash
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DELETE /users/me/devices/device-1
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Authorization: Bearer <access_token>
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Response:
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{
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"ok": true,
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"message": "Device logged out successfully"
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}
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```
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---
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## Mobile App Integration
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### New Response Fields to Handle
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1. **`is_new_device`** → Show security notification
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2. **`is_new_account`** → Show welcome flow
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3. **`active_devices_count`** → Display in settings
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### New Endpoints to Implement
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1. **Device List Screen** → Show all active devices
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2. **Revoke Device** → Allow users to logout specific devices
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3. **Security Settings** → Show active device count
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### Example Flow
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```kotlin
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// After login
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if (response.is_new_device && !response.is_new_account) {
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showSecurityAlert("New device logged in: ${deviceModel}")
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}
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// In settings screen
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val devices = apiClient.getDevices(accessToken)
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devices.forEach { device ->
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showDeviceCard(
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model = device.device_model,
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lastSeen = device.last_seen_at,
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onRevoke = { revokeDevice(device.device_identifier) }
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)
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}
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```
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---
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## Testing Checklist
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- [x] Same phone number can log in from multiple devices
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- [x] Each device gets its own refresh token
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- [x] Devices can be active simultaneously
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- [x] Revoking one device doesn't affect others
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- [x] New device detection works correctly
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- [x] Audit logging captures all events
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- [x] Device activity tracking works
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- [x] Logout all other devices works
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---
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## Backward Compatibility
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✅ **Fully backward compatible**
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- All existing endpoints work as before
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- New response fields are additions (optional to use)
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- New endpoints are additions (don't break existing code)
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---
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## Next Steps
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1. **Update Mobile App**
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- Handle new response fields
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- Implement device management UI
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- Show security notifications
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2. **Monitoring**
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- Query `auth_audit` for suspicious activity
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- Monitor device counts per user
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- Alert on unusual patterns
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3. **Future Enhancements**
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- Device name/labeling (let users name devices)
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- Push notifications on new device login
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- Device location tracking (optional)
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- Session limits (max devices per user)
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---
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## Files Modified
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1. `src/routes/authRoutes.js` - Enhanced verify-otp and refresh endpoints
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2. `src/routes/userRoutes.js` - Added device management endpoints
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3. `DEVICE_MANAGEMENT.md` - New documentation
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4. `CHANGELOG_DEVICE_MANAGEMENT.md` - This file
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---
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## Questions?
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See `DEVICE_MANAGEMENT.md` for detailed API documentation and examples.
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