# Frontend Role Migration - isAdmin → role

## 🎯 Overview

Migrated frontend from `isAdmin: boolean` to `role: 'USER' | 'MANAGEMENT' | 'ADMIN'` to match the new backend RBAC system.

---

## ✅ Files Updated

### 1. **Type Definitions**

#### `src/contexts/AuthContext.tsx`
- ✅ Updated `User` interface: `isAdmin?: boolean` → `role?: 'USER' | 'MANAGEMENT' | 'ADMIN'`
- ✅ Added helper functions:
  - `isAdmin(user)` - Checks if user is ADMIN
  - `isManagement(user)` - Checks if user is MANAGEMENT
  - `hasManagementAccess(user)` - Checks if user is MANAGEMENT or ADMIN
  - `hasAdminAccess(user)` - Checks if user is ADMIN (same as isAdmin)

#### `src/services/authApi.ts`
- ✅ Updated `TokenExchangeResponse` interface: `isAdmin: boolean` → `role: 'USER' | 'MANAGEMENT' | 'ADMIN'`

---

### 2. **Components Updated**

#### `src/pages/Dashboard/Dashboard.tsx`
**Changes:**
- ✅ Imported `isAdmin as checkIsAdmin` from AuthContext
- ✅ Updated role check: `(user as any)?.isAdmin || false` → `checkIsAdmin(user)`
- ✅ All conditional rendering now uses the helper function

**Admin Features (shown only for ADMIN role):**
- Organization-wide analytics
- Admin View badge
- Export button
- Department-wise workflow summary
- Priority distribution report
- TAT breach report
- AI remark utilization report
- Approver performance report

---

#### `src/pages/Settings/Settings.tsx`
**Changes:**
- ✅ Imported `isAdmin as checkIsAdmin` from AuthContext
- ✅ Updated role check: `(user as any)?.isAdmin` → `checkIsAdmin(user)`

**Admin Features:**
- Configuration Manager tab
- Holiday Manager tab
- System Settings tab

---

#### `src/pages/Profile/Profile.tsx`
**Changes:**
- ✅ Imported `isAdmin` and `isManagement` helpers from AuthContext
- ✅ Added `Users` icon import for Management badge
- ✅ Updated all `user?.isAdmin` checks to use `isAdmin(user)`
- ✅ Added Management badge display for MANAGEMENT role
- ✅ Updated role display to show:
  - **Administrator** badge (yellow) for ADMIN
  - **Management** badge (blue) for MANAGEMENT
  - **User** badge (gray) for USER

**New Visual Indicators:**
- 🟡 Yellow shield icon for ADMIN users
- 🔵 Blue users icon for MANAGEMENT users
- Role badge on profile card
- Role badge in header section

---

#### `src/pages/Auth/AuthenticatedApp.tsx`
**Changes:**
- ✅ Updated console log: `'Is Admin:', user.isAdmin` → `'Role:', user.role`

---

## 🎨 **Visual Changes**

### Profile Page Badges

**Before:**
```
🟡 Administrator (only for admins)
```

**After:**
```
🟡 Administrator (for ADMIN)
🔵 Management (for MANAGEMENT)
```

### Role Display

**Before:**
- Administrator / User

**After:**
- Administrator (yellow badge, green checkmark)
- Management (blue badge, green checkmark)
- User (gray badge, no checkmark)

---

## 🔧 **Helper Functions Usage**

### In Components:

```typescript
import { useAuth, isAdmin, isManagement, hasManagementAccess } from '@/contexts/AuthContext';

const { user } = useAuth();

// Check if user is admin
if (isAdmin(user)) {
  // Show admin-only features
}

// Check if user is management
if (isManagement(user)) {
  // Show management-only features
}

// Check if user has management access (MANAGEMENT or ADMIN)
if (hasManagementAccess(user)) {
  // Show features for both management and admin
}
```

---

## 🚀 **Migration Benefits**

1. **Type Safety** - Role is now a union type, catching errors at compile time
2. **Flexibility** - Easy to add more roles (e.g., AUDITOR, VIEWER)
3. **Granular Access** - Can differentiate between MANAGEMENT and ADMIN
4. **Consistency** - Frontend now matches backend RBAC system
5. **Helper Functions** - Cleaner code with reusable role checks

---

## 📊 **Access Levels**

| Feature | USER | MANAGEMENT | ADMIN |
|---------|------|------------|-------|
| View own requests | ✅ | ✅ | ✅ |
| View own dashboard | ✅ | ✅ | ✅ |
| View all requests | ❌ | ✅ | ✅ |
| View organization-wide analytics | ❌ | ✅ | ✅ |
| Export data | ❌ | ❌ | ✅ |
| Manage system configuration | ❌ | ❌ | ✅ |
| Manage holidays | ❌ | ❌ | ✅ |
| View TAT breach reports | ❌ | ❌ | ✅ |
| View approver performance | ❌ | ❌ | ✅ |

---

## ✅ **Testing Checklist**

- [ ] Login as USER - verify limited access
- [ ] Login as MANAGEMENT - verify read access to all data
- [ ] Login as ADMIN - verify full access
- [ ] Profile page shows correct role badge
- [ ] Dashboard shows appropriate views per role
- [ ] Settings page shows tabs only for ADMIN
- [ ] No console errors related to role checks

---

## 🔄 **Backward Compatibility**

**None** - This is a breaking change. All users must be assigned a role in the database:

```sql
-- Default all users to USER role
UPDATE users SET role = 'USER' WHERE role IS NULL;

-- Assign specific roles
UPDATE users SET role = 'ADMIN' WHERE email = 'admin@royalenfield.com';
UPDATE users SET role = 'MANAGEMENT' WHERE email = 'manager@royalenfield.com';
```

---

## 🎉 **Deployment Ready**

All changes are complete and linter-clean. Frontend now fully supports the new RBAC system!