# Story 3.1: Working Hours Configuration

## Epic Reference
**Epic 3:** Booking & Consultation System

## User Story
As an **admin**,
I want **to configure available working hours for each day of the week**,
So that **clients can only book consultations during my available times**.

## Story Context

### Existing System Integration
- **Integrates with:** working_hours table, availability calendar
- **Technology:** Livewire Volt, Flux UI forms
- **Follows pattern:** Admin settings pattern
- **Touch points:** Booking availability calculation

## Acceptance Criteria

### Working Hours Management
- [ ] Set available days (enable/disable each day of week)
- [ ] Set start time for each enabled day
- [ ] Set end time for each enabled day
- [ ] Support different hours for different days
- [ ] 15-minute buffer automatically applied between appointments
- [ ] 12-hour time format display (AM/PM)

### Configuration Interface
- [ ] Visual weekly schedule view
- [ ] Toggle for each day (Sunday-Saturday)
- [ ] Time pickers for start/end times
- [ ] Preview of available slots per day
- [ ] Save button with confirmation

### Behavior
- [ ] Changes take effect immediately for new bookings
- [ ] Existing approved bookings NOT affected by changes
- [ ] Warning if changing hours that have pending bookings
- [ ] Validation: end time must be after start time

### Quality Requirements
- [ ] Bilingual labels and messages
- [ ] Default working hours on initial setup
- [ ] Audit log entry on changes
- [ ] Tests for configuration logic

## Technical Notes

### Database Schema
```php
// working_hours table
Schema::create('working_hours', function (Blueprint $table) {
    $table->id();
    $table->tinyInteger('day_of_week'); // 0=Sunday, 6=Saturday
    $table->time('start_time');
    $table->time('end_time');
    $table->boolean('is_active')->default(true);
    $table->timestamps();
});
```

### Model
```php
<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class WorkingHour extends Model
{
    protected $fillable = [
        'day_of_week',
        'start_time',
        'end_time',
        'is_active',
    ];

    protected $casts = [
        'is_active' => 'boolean',
    ];

    public static function getDayName(int $dayOfWeek, string $locale = null): string
    {
        $locale = $locale ?? app()->getLocale();
        $days = [
            'en' => ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            'ar' => ['الأحد', 'الإثنين', 'الثلاثاء', 'الأربعاء', 'الخميس', 'الجمعة', 'السبت'],
        ];
        return $days[$locale][$dayOfWeek] ?? $days['en'][$dayOfWeek];
    }

    public function getSlots(int $duration = 60): array
    {
        $slots = [];
        $start = Carbon::parse($this->start_time);
        $end = Carbon::parse($this->end_time);

        while ($start->copy()->addMinutes($duration)->lte($end)) {
            $slots[] = $start->format('H:i');
            $start->addMinutes($duration);
        }

        return $slots;
    }
}
```

### Volt Component
```php
<?php

use App\Models\WorkingHour;
use Livewire\Volt\Component;

new class extends Component {
    public array $schedule = [];

    public function mount(): void
    {
        // Initialize with existing or default schedule
        for ($day = 0; $day <= 6; $day++) {
            $workingHour = WorkingHour::where('day_of_week', $day)->first();

            $this->schedule[$day] = [
                'is_active' => $workingHour?->is_active ?? false,
                'start_time' => $workingHour?->start_time ?? '09:00',
                'end_time' => $workingHour?->end_time ?? '17:00',
            ];
        }
    }

    public function save(): void
    {
        foreach ($this->schedule as $day => $config) {
            WorkingHour::updateOrCreate(
                ['day_of_week' => $day],
                [
                    'is_active' => $config['is_active'],
                    'start_time' => $config['start_time'],
                    'end_time' => $config['end_time'],
                ]
            );
        }

        // Log action
        AdminLog::create([
            'admin_id' => auth()->id(),
            'action_type' => 'update',
            'target_type' => 'working_hours',
            'new_values' => $this->schedule,
            'ip_address' => request()->ip(),
        ]);

        session()->flash('success', __('messages.working_hours_saved'));
    }
};
```

### Blade Template
```blade
<div>
    <flux:heading>{{ __('admin.working_hours') }}</flux:heading>

    @foreach(range(0, 6) as $day)
        <div class="flex items-center gap-4 py-3 border-b">
            <flux:switch
                wire:model.live="schedule.{{ $day }}.is_active"
            />

            <span class="w-24">
                {{ \App\Models\WorkingHour::getDayName($day) }}
            </span>

            @if($schedule[$day]['is_active'])
                <flux:input
                    type="time"
                    wire:model="schedule.{{ $day }}.start_time"
                />
                <span>{{ __('common.to') }}</span>
                <flux:input
                    type="time"
                    wire:model="schedule.{{ $day }}.end_time"
                />
            @else
                <span class="text-charcoal/50">{{ __('admin.closed') }}</span>
            @endif
        </div>
    @endforeach

    <flux:button wire:click="save" class="mt-4">
        {{ __('common.save') }}
    </flux:button>
</div>
```

### Slot Calculation Service
```php
<?php

namespace App\Services;

class AvailabilityService
{
    public function getAvailableSlots(Carbon $date): array
    {
        $dayOfWeek = $date->dayOfWeek;
        $workingHour = WorkingHour::where('day_of_week', $dayOfWeek)
            ->where('is_active', true)
            ->first();

        if (!$workingHour) {
            return [];
        }

        // Get all slots for the day
        $slots = $workingHour->getSlots(60); // 1 hour slots (45min + 15min buffer)

        // Remove already booked slots
        $bookedSlots = Consultation::where('scheduled_date', $date->toDateString())
            ->whereIn('status', ['pending', 'approved'])
            ->pluck('scheduled_time')
            ->map(fn($time) => Carbon::parse($time)->format('H:i'))
            ->toArray();

        // Remove blocked times
        $blockedSlots = $this->getBlockedSlots($date);

        return array_diff($slots, $bookedSlots, $blockedSlots);
    }
}
```

## Definition of Done

- [ ] Can enable/disable each day of week
- [ ] Can set start/end times per day
- [ ] Changes save correctly to database
- [ ] Existing bookings not affected
- [ ] Preview shows available slots
- [ ] 12-hour time format displayed
- [ ] Audit log created on save
- [ ] Bilingual support complete
- [ ] Tests for configuration
- [ ] Code formatted with Pint

## Dependencies

- **Epic 1:** Database schema, admin authentication

## Risk Assessment

- **Primary Risk:** Changing hours affects availability incorrectly
- **Mitigation:** Clear separation between existing bookings and new availability
- **Rollback:** Restore previous working hours from audit log

## Estimation

**Complexity:** Medium
**Estimated Effort:** 3-4 hours