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Permission System Implementation - Complete

Overview

Implemented comprehensive permission-based access control across all mobile screens, matching the web app's security model. Users now only see and can access screens they have permissions for.

Changes Summary

1. Core Components

AccessDenied Component (NEW)

  • File: components/AccessDenied.tsx
  • Purpose: Reusable component shown when users lack permission
  • Features:
    • Lock icon (Ionicons)
    • "Access Denied" title
    • Customizable message prop
    • Centered layout with proper styling

usePermissions Hook (UPDATED)

  • File: hooks/usePermissions.ts
  • Changes:
    • Exported UserPermissions interface for TypeScript support
    • Already had proper permission checking logic
    • Supports tenant admin bypass (all permissions)

2. Navigation Updates

BottomTabNavigator (UPDATED)

  • File: components/BottomTabNavigator.tsx
  • Changes:
    • Added usePermissions import
    • Conditionally render tabs based on permissions:
      • Dashboard: Always visible (no permission required)
      • Calendar: Requires access_calendar
      • Reservations: Requires access_bookings
      • Expenses: Requires access_expenses
      • Accounts: Requires access_accounts
      • Reports: Requires access_reports
    • Tabs without permission are completely hidden (not just disabled)

3. Screen-Level Permission Guards

All screens now check permissions before rendering content. Users without permission see the AccessDenied component.

Already Protected (Verified)

  1. DashboardScreen ✅

    • Uses usePermissions hook
    • Has permission logic for components

  2. ReportsScreen ✅

    • Permission: access_reports
    • Custom AccessDenied UI already implemented

  3. ExpensesScreen ✅

    • Permission: access_expenses
    • Custom AccessDenied UI already implemented

  4. UsersScreen ✅

    • Permission: access_users
    • Already had permission checks

Updated with Permission Guards

  1. CalendarScreen

    • Permission: access_calendar
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  2. MasterFilesScreen

    • Permission: access_master_files
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  3. SettingsScreen

    • Permissions: Tab-level granular control
    • Tabs and required permissions:
      • Profile: No permission needed
      • Form Fields: No permission needed
      • Expense Categories: access_master_files
      • Income Types: access_accounts
      • Currency Settings: No permission needed
      • Booking Management: access_booking_channels
    • Behavior:
      • Unauthorized tabs are disabled (gray, non-clickable)
      • Clicking disabled tab shows AccessDenied in content area
    • Added proper TypeScript typing for tab permissions

  4. BookingChannelsScreen

    • Permission: access_booking_channels
    • Was a stub screen
    • Added: usePermissions hook and AccessDenied component

  5. RoomsScreen

    • Permission: access_rooms
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  6. ReservationsScreen

    • Permission: access_bookings
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  7. HotelLocationsScreen

    • Permission: access_master_files
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  8. TourGuidesScreen

    • Permission: access_master_files
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  9. TravelAgentsScreen

    • Permission: access_master_files
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  10. CommissionSettingsScreen

    • Permission: access_settings
    • Was a stub screen
    • Added: usePermissions hook and AccessDenied component

  11. BillingSubscriptionsScreen

    • Permission: access_settings
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

  12. AccountsScreen

    • Permission: access_accounts
    • Added: usePermissions hook and AccessDenied component
    • Early return if permission denied

Permission Mappings

Screen/Feature Permission Key Description
Dashboard access_dashboard Dashboard overview
Calendar access_calendar Calendar timeline view
Reservations access_bookings Booking management
Rooms access_rooms Room management
Expenses access_expenses Expense tracking
Accounts access_accounts Account management
Reports access_reports Financial reports
Users access_users User management
Settings access_settings Settings management
Master Files access_master_files Locations, guides, agents
Booking Channels access_booking_channels Online booking platforms

Code Pattern

Standard implementation pattern used across all screens:

import AccessDenied from "@/components/AccessDenied";
import { usePermissions } from "@/hooks/usePermissions";

export default function SomeScreen() {
  const { hasPermission } = usePermissions();

  if (!hasPermission("access_xxx")) {
    return (
      <AccessDenied message="You don't have permission to access [Feature]." />
    );
  }

  // Rest of component...
}

Testing Checklist

User with No Permissions

  • Only sees Dashboard tab
  • Clicking Dashboard works normally
  • All other tabs are hidden
  • Direct navigation to restricted screens shows AccessDenied

User with Limited Permissions (e.g., only Calendar + Expenses)

  • Sees Dashboard, Calendar, and Expenses tabs
  • All other tabs are hidden
  • Can navigate between allowed tabs
  • Direct navigation to restricted screens shows AccessDenied

User with Master Files Permission

  • Can access: HotelLocations, TourGuides, TravelAgents
  • Settings tab shows Expense Categories (enabled)
  • Other master file sections work normally

Tenant Admin/Owner

  • Sees all tabs in navigation
  • Can access all screens
  • No AccessDenied messages shown
  • All features fully functional

Settings Screen Tab-Level Permissions

  • Profile tab always visible
  • Form Fields tab always visible
  • Expense Categories requires access_master_files
  • Income Types requires access_accounts
  • Currency Settings always visible
  • Booking Management requires access_booking_channels
  • Clicking unauthorized tab shows content AccessDenied

TypeScript Validation

All files pass TypeScript checks:

  • ✅ No compilation errors
  • ✅ Proper type imports
  • ✅ UserPermissions interface exported and used correctly
  • ✅ Permission keys properly typed

Next Steps (User Testing Required)

  1. Device Testing: Test on physical devices to ensure UX is smooth
  2. Permission Matrix Testing: Verify all permission combinations work
  3. Navigation Flow: Ensure no navigation edge cases exist
  4. Error Scenarios: Test with database connection issues
  5. Performance: Check that permission checks don't slow down navigation

Files Modified

Created

  1. components/AccessDenied.tsx
  2. PERMISSION_SYSTEM_IMPLEMENTATION.md (this file)

Updated

  1. hooks/usePermissions.ts - Exported UserPermissions interface
  2. components/BottomTabNavigator.tsx - Conditional tab rendering
  3. components/screens/SettingsScreen.tsx - Tab-level permissions
  4. components/screens/CalendarScreen.tsx - Permission guard
  5. components/screens/MasterFilesScreen.tsx - Permission guard
  6. components/screens/BookingChannelsScreen.tsx - Permission guard
  7. components/screens/RoomsScreen.tsx - Permission guard
  8. components/screens/ReservationsScreen.tsx - Permission guard
  9. components/screens/HotelLocationsScreen.tsx - Permission guard
  10. components/screens/TourGuidesScreen.tsx - Permission guard
  11. components/screens/TravelAgentsScreen.tsx - Permission guard
  12. components/screens/CommissionSettingsScreen.tsx - Permission guard
  13. components/screens/BillingSubscriptionsScreen.tsx - Permission guard
  14. components/screens/AccountsScreen.tsx - Permission guard

Total Files: 16 modified/created

Security Benefits

  1. Unauthorized Access Prevention: Users can't access features they don't have permission for
  2. Clear User Feedback: AccessDenied component provides clear explanation
  3. Navigation Clarity: Users only see tabs they can use
  4. Consistent Security Model: Matches web app's permission system exactly
  5. Type Safety: TypeScript ensures permission keys are correct

Implementation Status

✅ COMPLETE - All screens now have permission guards
✅ COMPLETE - Navigation filters tabs by permissions
✅ COMPLETE - TypeScript errors resolved
✅ COMPLETE - Consistent pattern across all screens
⏳ PENDING - User testing on physical devices