@extends('layouts.app')

@section('title', 'Pharmacie - Vente de médicaments')

@section('content')
<div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
    <h1 class="h2">
        <i class="fas fa-pills me-2"></i>
        Pharmacie
    </h1>
    <div class="btn-toolbar mb-2 mb-md-0">
        <a href="{{ route('medication-sales.index') }}" class="btn btn-outline-primary me-2">
            <i class="fas fa-history me-1"></i>
            Historique des ventes
        </a>
        <a href="{{ route('medications.index') }}" class="btn btn-outline-secondary">
            <i class="fas fa-capsules me-1"></i>
            Gérer le stock
        </a>
    </div>
</div>

<div class="row">
    <!-- Formulaire de vente -->
    <div class="col-md-8">
        <div class="card shadow-sm">
            <div class="card-header bg-primary text-white">
                <h5 class="mb-0">
                    <i class="fas fa-shopping-cart me-2"></i>
                    Nouvelle vente
                </h5>
            </div>
            <div class="card-body">
                <form action="{{ route('medication-sales.store') }}" method="POST" id="saleForm">
                    @csrf
                    
                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="health_center_id" class="form-label">Centre de santé <span class="text-danger">*</span></label>
                                <select class="form-select @error('health_center_id') is-invalid @enderror" 
                                        id="health_center_id" name="health_center_id" required>
                                    <option value="">Sélectionner un centre...</option>
                                    @foreach($healthCenters as $center)
                                        <option value="{{ $center->id }}" {{ old('health_center_id') == $center->id ? 'selected' : '' }}>
                                            {{ $center->name }}
                                        </option>
                                    @endforeach
                                </select>
                                @error('health_center_id')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="patient_id" class="form-label">Patient (optionnel)</label>
                                <select class="form-select @error('patient_id') is-invalid @enderror" 
                                        id="patient_id" name="patient_id">
                                    <option value="">Sélectionner un patient...</option>
                                    @foreach($patients as $patient)
                                        <option value="{{ $patient->id }}" {{ old('patient_id') == $patient->id ? 'selected' : '' }}>
                                            {{ $patient->patient_number }} - {{ $patient->full_name }}
                                        </option>
                                    @endforeach
                                </select>
                                @error('patient_id')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                    </div>

                    <div class="row">
                        <div class="col-md-8">
                            <div class="mb-3">
                                <label for="medication_id" class="form-label">Médicament <span class="text-danger">*</span></label>
                                <select class="form-select @error('medication_id') is-invalid @enderror" 
                                        id="medication_id" name="medication_id" required>
                                    <option value="">Sélectionner un médicament...</option>
                                    @foreach($medications as $medication)
                                        <option value="{{ $medication->id }}" 
                                                data-price="{{ $medication->unit_price }}"
                                                data-stock="{{ $medication->stock_quantity }}"
                                                {{ old('medication_id') == $medication->id ? 'selected' : '' }}>
                                            {{ $medication->name }} - {{ $medication->dosage }} 
                                            (Stock: {{ $medication->stock_quantity }}) - {{ number_format($medication->unit_price, 0, ',', ' ') }} FCFA
                                        </option>
                                    @endforeach
                                </select>
                                @error('medication_id')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label for="quantity" class="form-label">Quantité <span class="text-danger">*</span></label>
                                <input type="number" class="form-control @error('quantity') is-invalid @enderror" 
                                       id="quantity" name="quantity" value="{{ old('quantity', 1) }}" 
                                       min="1" required>
                                @error('quantity')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                                <small class="text-muted" id="stockInfo"></small>
                            </div>
                        </div>
                    </div>

                    <div class="row">
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="payment_method" class="form-label">Mode de paiement <span class="text-danger">*</span></label>
                                <select class="form-select @error('payment_method') is-invalid @enderror" 
                                        id="payment_method" name="payment_method" required>
                                    <option value="">Sélectionner...</option>
                                    <option value="cash" {{ old('payment_method') == 'cash' ? 'selected' : '' }}>Espèces</option>
                                    <option value="card" {{ old('payment_method') == 'card' ? 'selected' : '' }}>Carte bancaire</option>
                                    <option value="mobile_money" {{ old('payment_method') == 'mobile_money' ? 'selected' : '' }}>Mobile Money</option>
                                    <option value="insurance" {{ old('payment_method') == 'insurance' ? 'selected' : '' }}>Assurance</option>
                                </select>
                                @error('payment_method')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                        
                        <div class="col-md-6">
                            <div class="mb-3">
                                <label for="discount" class="form-label">Remise (FCFA)</label>
                                <input type="number" class="form-control @error('discount') is-invalid @enderror" 
                                       id="discount" name="discount" value="{{ old('discount', 0) }}" 
                                       min="0" step="0.01">
                                @error('discount')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>
                    </div>

                    <div class="mb-3">
                        <label for="pharmacist_notes" class="form-label">Notes du pharmacien</label>
                        <textarea class="form-control @error('pharmacist_notes') is-invalid @enderror" 
                                  id="pharmacist_notes" name="pharmacist_notes" rows="2" 
                                  placeholder="Notes ou instructions spéciales...">{{ old('pharmacist_notes') }}</textarea>
                        @error('pharmacist_notes')
                            <div class="invalid-feedback">{{ $message }}</div>
                        @enderror
                    </div>

                    <div class="d-flex justify-content-end">
                        <button type="submit" class="btn btn-success btn-lg">
                            <i class="fas fa-shopping-cart me-1"></i>
                            Enregistrer la vente
                        </button>
                    </div>
                </form>
            </div>
        </div>
    </div>

    <!-- Résumé de la vente -->
    <div class="col-md-4">
        <div class="card shadow-sm">
            <div class="card-header bg-success text-white">
                <h5 class="mb-0">
                    <i class="fas fa-calculator me-2"></i>
                    Résumé
                </h5>
            </div>
            <div class="card-body">
                <div class="mb-3">
                    <div class="d-flex justify-content-between">
                        <span>Prix unitaire:</span>
                        <span id="unitPrice">0 FCFA</span>
                    </div>
                </div>
                <div class="mb-3">
                    <div class="d-flex justify-content-between">
                        <span>Quantité:</span>
                        <span id="summaryQuantity">0</span>
                    </div>
                </div>
                <div class="mb-3">
                    <div class="d-flex justify-content-between">
                        <span>Sous-total:</span>
                        <span id="subTotal">0 FCFA</span>
                    </div>
                </div>
                <div class="mb-3">
                    <div class="d-flex justify-content-between">
                        <span>Remise:</span>
                        <span id="discountAmount">0 FCFA</span>
                    </div>
                </div>
                <hr>
                <div class="d-flex justify-content-between h5">
                    <strong>Total:</strong>
                    <strong id="finalTotal" class="text-success">0 FCFA</strong>
                </div>
            </div>
        </div>

        <!-- Stock faible -->
        <div class="card shadow-sm mt-3">
            <div class="card-header bg-warning text-dark">
                <h6 class="mb-0">
                    <i class="fas fa-exclamation-triangle me-2"></i>
                    Alerte stock
                </h6>
            </div>
            <div class="card-body">
                @php
                    $lowStockMeds = $medications->filter(function($med) {
                        return $med->isLowStock();
                    });
                @endphp
                
                @if($lowStockMeds->count() > 0)
                    @foreach($lowStockMeds->take(5) as $med)
                        <div class="small mb-1">
                            <strong>{{ $med->name }}</strong>: {{ $med->stock_quantity }} restant
                        </div>
                    @endforeach
                @else
                    <div class="text-muted small">Aucune alerte stock</div>
                @endif
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
document.addEventListener('DOMContentLoaded', function() {
    const medicationSelect = document.getElementById('medication_id');
    const quantityInput = document.getElementById('quantity');
    const discountInput = document.getElementById('discount');
    
    function updateSummary() {
        const selectedMed = medicationSelect.options[medicationSelect.selectedIndex];
        const unitPrice = selectedMed ? parseFloat(selectedMed.dataset.price || 0) : 0;
        const quantity = parseInt(quantityInput.value || 0);
        const discount = parseFloat(discountInput.value || 0);
        
        const subTotal = unitPrice * quantity;
        const finalTotal = Math.max(0, subTotal - discount);
        
        document.getElementById('unitPrice').textContent = unitPrice.toLocaleString() + ' FCFA';
        document.getElementById('summaryQuantity').textContent = quantity;
        document.getElementById('subTotal').textContent = subTotal.toLocaleString() + ' FCFA';
        document.getElementById('discountAmount').textContent = discount.toLocaleString() + ' FCFA';
        document.getElementById('finalTotal').textContent = finalTotal.toLocaleString() + ' FCFA';
        
        // Update stock info
        const stock = selectedMed ? parseInt(selectedMed.dataset.stock || 0) : 0;
        const stockInfo = document.getElementById('stockInfo');
        if (selectedMed && stock > 0) {
            stockInfo.textContent = `Stock disponible: ${stock}`;
            stockInfo.className = stock <= 10 ? 'text-warning' : 'text-muted';
        } else {
            stockInfo.textContent = '';
        }
    }
    
    medicationSelect.addEventListener('change', updateSummary);
    quantityInput.addEventListener('input', updateSummary);
    discountInput.addEventListener('input', updateSummary);
    
    updateSummary();
});
</script>
@endpush