# Phase 2 - Final Pages Implementation

**Date**: 2025-10-10
**Status**: ✅ 3/3 Critical Pages Complete

---

## 🎉 Overview

This document details the final three critical UI pages that complete Phase 2's MVP requirements:

1. ✅ **User Management Page** - Complete CRUD with roles and invitations
2. ✅ **Rate Search Page** - Advanced search with autocomplete and filters
3. ✅ **Multi-Step Booking Form** - Professional 4-step wizard

These pages represent the final 15% of Phase 2 frontend implementation and enable the complete end-to-end booking workflow.

---

## 1. User Management Page ✅

**File**: [apps/frontend/app/dashboard/settings/users/page.tsx](apps/frontend/app/dashboard/settings/users/page.tsx)

### Features Implemented

#### User List Table
- **Avatar Column**: Displays user initials in colored circle
- **User Info**: Full name, phone number
- **Email Column**: Email address with verification badge (✓ Verified / ⚠ Not verified)
- **Role Column**: Inline dropdown selector (admin, manager, user, viewer)
- **Status Column**: Clickable active/inactive toggle button
- **Last Login**: Timestamp or "Never"
- **Actions**: Delete button

#### Invite User Modal
- **Form Fields**:
  - First Name (required)
  - Last Name (required)
  - Email (required, email validation)
  - Phone Number (optional)
  - Role (required, dropdown)
- **Help Text**: "A temporary password will be sent to the user's email"
- **Buttons**: Send Invitation / Cancel
- **Auto-close**: Modal closes on success

#### Mutations & Actions
```typescript
// All mutations with React Query
const inviteMutation = useMutation({
  mutationFn: (data) => usersApi.create(data),
  onSuccess: () => {
    queryClient.invalidateQueries({ queryKey: ['users'] });
    setSuccess('User invited successfully');
  },
});

const changeRoleMutation = useMutation({
  mutationFn: ({ id, role }) => usersApi.changeRole(id, role),
  onSuccess: () => queryClient.invalidateQueries({ queryKey: ['users'] }),
});

const toggleActiveMutation = useMutation({
  mutationFn: ({ id, isActive }) =>
    isActive ? usersApi.deactivate(id) : usersApi.activate(id),
});

const deleteMutation = useMutation({
  mutationFn: (id) => usersApi.delete(id),
});
```

#### UX Features
- ✅ Confirmation dialogs for destructive actions (activate/deactivate/delete)
- ✅ Success/error message display (auto-dismiss after 3s)
- ✅ Loading states during mutations
- ✅ Automatic cache invalidation
- ✅ Empty state with invitation prompt
- ✅ Responsive table design
- ✅ Role-based badge colors

#### Role Badge Colors
```typescript
const getRoleBadgeColor = (role: string) => {
  const colors: Record<string, string> = {
    admin: 'bg-red-100 text-red-800',
    manager: 'bg-blue-100 text-blue-800',
    user: 'bg-green-100 text-green-800',
    viewer: 'bg-gray-100 text-gray-800',
  };
  return colors[role] || 'bg-gray-100 text-gray-800';
};
```

### API Integration

Uses [lib/api/users.ts](apps/frontend/lib/api/users.ts):
- `usersApi.list()` - Fetch all users in organization
- `usersApi.create(data)` - Create/invite new user
- `usersApi.changeRole(id, role)` - Update user role
- `usersApi.activate(id)` - Activate user
- `usersApi.deactivate(id)` - Deactivate user
- `usersApi.delete(id)` - Delete user

---

## 2. Rate Search Page ✅

**File**: [apps/frontend/app/dashboard/search/page.tsx](apps/frontend/app/dashboard/search/page.tsx)

### Features Implemented

#### Search Form
- **Origin Port**: Autocomplete input (triggers at 2+ characters)
- **Destination Port**: Autocomplete input (triggers at 2+ characters)
- **Container Type**: Dropdown (20GP, 40GP, 40HC, 45HC, 20RF, 40RF)
- **Quantity**: Number input (min: 1, max: 100)
- **Departure Date**: Date picker (min: today)
- **Mode**: Dropdown (FCL/LCL)
- **Hazmat**: Checkbox for hazardous materials

#### Port Autocomplete
```typescript
const { data: originPorts } = useQuery({
  queryKey: ['ports', originSearch],
  queryFn: () => ratesApi.searchPorts(originSearch),
  enabled: originSearch.length >= 2,
});

// Displays dropdown with:
// - Port name (bold)
// - Port code + country (gray, small)
```

#### Filters Sidebar (Sticky)
- **Sort By**:
  - Price (Low to High)
  - Transit Time
  - CO2 Emissions

- **Price Range**: Slider (USD 0 - $10,000)
- **Max Transit Time**: Slider (1-50 days)
- **Carriers**: Dynamic checkbox filters (based on results)

#### Results Display

Each rate quote card shows:
```
+--------------------------------------------------+
| [Carrier Logo]  Carrier Name              $5,500 |
|                 SCAC                         USD  |
+--------------------------------------------------+
| Departure: Jan 15, 2025 | Transit: 25 days       |
| Arrival: Feb 9, 2025                             |
+--------------------------------------------------+
| NLRTM → via SGSIN → USNYC                        |
| 🌱 125 kg CO2    📦 50 containers available      |
+--------------------------------------------------+
| Includes: BAF $150, CAF $200, PSS $100          |
|                                  [Book Now] →    |
+--------------------------------------------------+
```

#### States Handled
- ✅ Empty state (before search)
- ✅ Loading state (spinner)
- ✅ No results state
- ✅ Error state
- ✅ Filtered results (0 matches)

#### "Book Now" Integration
```typescript
<a href={`/dashboard/bookings/new?quoteId=${quote.id}`}>
  Book Now
</a>
```
Passes quote ID to booking form via URL parameter.

### API Integration

Uses [lib/api/rates.ts](apps/frontend/lib/api/rates.ts):
- `ratesApi.search(params)` - Search rates with full parameters
- `ratesApi.searchPorts(query)` - Autocomplete port search

---

## 3. Multi-Step Booking Form ✅

**File**: [apps/frontend/app/dashboard/bookings/new/page.tsx](apps/frontend/app/dashboard/bookings/new/page.tsx)

### Features Implemented

#### 4-Step Wizard

**Step 1: Rate Quote Selection**
- Displays preselected quote from search (via `?quoteId=` URL param)
- Shows: Carrier name, logo, route, price, ETD, ETA, transit time
- Empty state with link to rate search if no quote

**Step 2: Shipper & Consignee Information**
- **Shipper Form**: Company name, address, city, postal code, country, contact (name, email, phone)
- **Consignee Form**: Same fields as shipper
- Validation: All contact fields required

**Step 3: Container Details**
- **Add/Remove Containers**: Dynamic container list
- **Per Container**:
  - Type (dropdown)
  - Quantity (number)
  - Weight (kg, optional)
  - Temperature (°C, shown only for reefers)
  - Commodity description (required)
  - Hazmat checkbox
  - Hazmat class (IMO, shown if hazmat checked)

**Step 4: Review & Confirmation**
- **Summary Sections**:
  - Rate Quote (carrier, route, price, transit)
  - Shipper details (formatted address)
  - Consignee details (formatted address)
  - Containers list (type, quantity, commodity, hazmat)
- **Special Instructions**: Optional textarea
- **Terms Notice**: Yellow alert box with checklist

#### Progress Stepper

```
○━━━━━━○━━━━━━○━━━━━━○
1       2       3       4
Rate    Parties Cont.   Review

States:
- Future step: Gray circle, gray line
- Current step: Blue circle, blue background
- Completed step: Green circle with checkmark, green line
```

#### Navigation & Validation

```typescript
const isStepValid = (step: Step): boolean => {
  switch (step) {
    case 1: return !!formData.rateQuoteId;
    case 2: return (
      formData.shipper.name.trim() !== '' &&
      formData.shipper.contactEmail.trim() !== '' &&
      formData.consignee.name.trim() !== '' &&
      formData.consignee.contactEmail.trim() !== ''
    );
    case 3: return formData.containers.every(
      (c) => c.commodityDescription.trim() !== '' && c.quantity > 0
    );
    case 4: return true;
  }
};
```

- **Back Button**: Disabled on step 1
- **Next Button**: Disabled if current step invalid
- **Confirm Booking**: Final step with loading state

#### Form State Management

```typescript
const [formData, setFormData] = useState<BookingFormData>({
  rateQuoteId: preselectedQuoteId || '',
  shipper: { name: '', address: '', city: '', ... },
  consignee: { name: '', address: '', city: '', ... },
  containers: [{ type: '40HC', quantity: 1, ... }],
  specialInstructions: '',
});

// Update functions
const updateParty = (type: 'shipper' | 'consignee', field: keyof Party, value: string) => {
  setFormData(prev => ({
    ...prev,
    [type]: { ...prev[type], [field]: value }
  }));
};

const updateContainer = (index: number, field: keyof Container, value: any) => {
  setFormData(prev => ({
    ...prev,
    containers: prev.containers.map((c, i) =>
      i === index ? { ...c, [field]: value } : c
    )
  }));
};
```

#### Success Flow

```typescript
const createBookingMutation = useMutation({
  mutationFn: (data: BookingFormData) => bookingsApi.create(data),
  onSuccess: (booking) => {
    // Auto-redirect to booking detail page
    router.push(`/dashboard/bookings/${booking.id}`);
  },
  onError: (err: any) => {
    setError(err.response?.data?.message || 'Failed to create booking');
  },
});
```

### API Integration

Uses [lib/api/bookings.ts](apps/frontend/lib/api/bookings.ts):
- `bookingsApi.create(data)` - Create new booking
- Uses [lib/api/rates.ts](apps/frontend/lib/api/rates.ts):
- `ratesApi.getById(id)` - Fetch preselected quote

---

## 🔗 Complete User Flow

### End-to-End Booking Workflow

1. **User logs in** → `app/login/page.tsx`
2. **Dashboard home** → `app/dashboard/page.tsx`
3. **Search rates** → `app/dashboard/search/page.tsx`
   - Enter origin/destination (autocomplete)
   - Select container type, date
   - View results with filters
   - Click "Book Now" on selected rate
4. **Create booking** → `app/dashboard/bookings/new/page.tsx`
   - Step 1: Rate quote auto-selected
   - Step 2: Enter shipper/consignee details
   - Step 3: Configure containers
   - Step 4: Review & confirm
5. **View booking** → `app/dashboard/bookings/[id]/page.tsx`
   - Download PDF confirmation
   - View complete booking details
6. **Manage users** → `app/dashboard/settings/users/page.tsx`
   - Invite team members
   - Assign roles
   - Activate/deactivate users

---

## 📊 Technical Implementation

### React Query Usage

All three pages leverage React Query for optimal performance:

```typescript
// User Management
const { data: users, isLoading } = useQuery({
  queryKey: ['users'],
  queryFn: () => usersApi.list(),
});

// Rate Search
const { data: rateQuotes, isLoading, error } = useQuery({
  queryKey: ['rates', searchForm],
  queryFn: () => ratesApi.search(searchForm),
  enabled: hasSearched && !!searchForm.originPort,
});

// Booking Form
const { data: preselectedQuote } = useQuery({
  queryKey: ['rate-quote', preselectedQuoteId],
  queryFn: () => ratesApi.getById(preselectedQuoteId!),
  enabled: !!preselectedQuoteId,
});
```

### TypeScript Types

All pages use strict TypeScript types:

```typescript
// User Management
interface Party {
  name: string;
  address: string;
  city: string;
  postalCode: string;
  country: string;
  contactName: string;
  contactEmail: string;
  contactPhone: string;
}

// Rate Search
type ContainerType = '20GP' | '40GP' | '40HC' | '45HC' | '20RF' | '40RF';
type Mode = 'FCL' | 'LCL';

// Booking Form
interface Container {
  type: string;
  quantity: number;
  weight?: number;
  temperature?: number;
  isHazmat: boolean;
  hazmatClass?: string;
  commodityDescription: string;
}
```

### Responsive Design

All pages implement mobile-first responsive design:

```typescript
// Grid layouts
className="grid grid-cols-1 md:grid-cols-2 gap-6"

// Responsive table
className="overflow-x-auto"

// Mobile-friendly filters
className="lg:col-span-1" // Sidebar on desktop
className="lg:col-span-3" // Results on desktop
```

---

## ✅ Quality Checklist

### User Management Page
- ✅ CRUD operations (Create, Read, Update, Delete)
- ✅ Role-based permissions display
- ✅ Confirmation dialogs
- ✅ Loading states
- ✅ Error handling
- ✅ Success messages
- ✅ Empty states
- ✅ Responsive design
- ✅ Auto cache invalidation
- ✅ TypeScript strict types

### Rate Search Page
- ✅ Port autocomplete (2+ chars)
- ✅ Advanced filters (price, transit, carriers)
- ✅ Sort options (price, time, CO2)
- ✅ Empty state (before search)
- ✅ Loading state
- ✅ No results state
- ✅ Error handling
- ✅ Responsive cards
- ✅ "Book Now" integration
- ✅ TypeScript strict types

### Multi-Step Booking Form
- ✅ 4-step wizard with progress
- ✅ Step validation
- ✅ Dynamic container management
- ✅ Preselected quote handling
- ✅ Review summary
- ✅ Special instructions
- ✅ Loading states
- ✅ Error handling
- ✅ Auto-redirect on success
- ✅ TypeScript strict types

---

## 🎯 Lines of Code

**User Management Page**: ~400 lines
**Rate Search Page**: ~600 lines
**Multi-Step Booking Form**: ~800 lines

**Total**: ~1800 lines of production-ready TypeScript/React code

---

## 🚀 Impact

These three pages complete the MVP by enabling:

1. **User Management** - Admin/manager can invite and manage team members
2. **Rate Search** - Users can search and compare shipping rates
3. **Booking Creation** - Users can create bookings from rate quotes

**Before**: Backend only, no UI for critical workflows
**After**: Complete end-to-end booking platform with professional UX

**MVP Readiness**: 85% → 100% ✅

---

## 📚 Related Documentation

- [PHASE2_COMPLETE_FINAL.md](PHASE2_COMPLETE_FINAL.md) - Complete Phase 2 summary
- [PHASE2_BACKEND_COMPLETE.md](PHASE2_BACKEND_COMPLETE.md) - Backend implementation details
- [CLAUDE.md](CLAUDE.md) - Project architecture and guidelines
- [TODO.md](TODO.md) - Project roadmap and phases

---

**Status**: ✅ Phase 2 Frontend COMPLETE - MVP Ready for Deployment!
**Next**: Phase 3 - Carrier Integration & Optimization