@extends('layouts.app')

@section('title', 'Detalles de Factura de Venta')

@section('content')
<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <div class="d-flex justify-content-between align-items-center">
                        <h3 class="card-title">
                            <i class="fas fa-file-invoice-dollar mr-2"></i>
                            Factura de Venta: {{ $invoice->invoice_number }}
                        </h3>
                        <div>
                            <a href="{{ route('admin.sales.invoices.index') }}" class="btn btn-secondary">
                                <i class="fas fa-arrow-left mr-1"></i>
                                Volver
                            </a>
                            <a href="{{ route('admin.sales.invoices.edit', $invoice) }}" class="btn btn-warning">
                                <i class="fas fa-edit mr-1"></i>
                                Editar
                            </a>
                        </div>
                    </div>
                </div>

                <div class="card-body">
                    <!-- Información de la factura -->
                    <div class="row mb-4">
                        <div class="col-md-6">
                            <div class="card">
                                <div class="card-header">
                                    <h6>Información de la Factura</h6>
                                </div>
                                <div class="card-body">
                                    <div class="row">
                                        <div class="col-6"><strong>Número:</strong></div>
                                        <div class="col-6">{{ $invoice->invoice_number }}</div>
                                    </div>
                                    <div class="row">
                                        <div class="col-6"><strong>Fecha:</strong></div>
                                        <div class="col-6">{{ $invoice->invoice_date ? $invoice->invoice_date->format('d/m/Y') : 'N/A' }}</div>
                                    </div>
                                    <div class="row">
                                        <div class="col-6"><strong>Vencimiento:</strong></div>
                                        <div class="col-6">{{ $invoice->due_date ? $invoice->due_date->format('d/m/Y') : 'N/A' }}</div>
                                    </div>
                                    <div class="row">
                                        <div class="col-6"><strong>Estado:</strong></div>
                                        <div class="col-6">
                                            @php
                                                $statusClasses = [
                                                    'draft' => 'badge-secondary',
                                                    'sent' => 'badge-primary',
                                                    'paid' => 'badge-success',
                                                    'overdue' => 'badge-danger',
                                                    // 'cancelled' eliminado - las facturas no se cancelan, se devuelven
                                                ];
                                            @endphp
                                            <span class="badge {{ $statusClasses[$invoice->status] ?? 'badge-secondary' }}">
                                                @if($invoice->status === 'sent')
                                                    Procesada
                                                @elseif($invoice->status === 'paid')
                                                    Pagada
                                                @elseif($invoice->status === 'overdue')
                                                    Vencida
                                                @elseif($invoice->status === 'draft')
                                                    Borrador
                                                @else
                                                    {{ ucfirst($invoice->status) }}
                                                @endif
                                            </span>
                                        </div>
                                    </div>
                                    <div class="row">
                                        <div class="col-6"><strong>Moneda:</strong></div>
                                        <div class="col-6">{{ $invoice->currency ?? 'USD' }}</div>
                                    </div>
                                    @if($invoice->currency !== 'USD')
                                    <div class="row">
                                        <div class="col-6"><strong>Tasa Legal (USD):</strong></div>
                                        <div class="col-6">{{ number_format($invoice->exchange_rate_legal ?? $invoice->exchange_rate ?? 1, 4) }}</div>
                                    </div>
                                    @if($invoice->exchange_rate_real && $invoice->exchange_rate_real != $invoice->exchange_rate_legal)
                                    <div class="row">
                                        <div class="col-6"><strong>Tasa Real:</strong></div>
                                        <div class="col-6">{{ number_format($invoice->exchange_rate_real ?? 1, 4) }}</div>
                                    </div>
                                    @endif
                                    @endif
                                </div>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="card">
                                <div class="card-header">
                                    <h6>Información del Cliente</h6>
                                </div>
                                <div class="card-body">
                                    @if($invoice->client)
                                        <div class="row">
                                            <div class="col-6"><strong>Empresa:</strong></div>
                                            <div class="col-6">{{ $invoice->client->business_name }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6"><strong>NIT:</strong></div>
                                            <div class="col-6">{{ $invoice->client->tax_id ?? 'N/A' }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6"><strong>Teléfono:</strong></div>
                                            <div class="col-6">{{ $invoice->client->phone ?? 'N/A' }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6"><strong>Email:</strong></div>
                                            <div class="col-6">{{ $invoice->client->email ?? 'N/A' }}</div>
                                        </div>
                                    @else
                                        <div class="alert alert-warning">Cliente no encontrado</div>
                                    @endif
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Productos -->
                    <div class="row mb-4">
                        <div class="col-12">
                            <h5>Productos</h5>
                            <div class="table-responsive">
                                <table class="table table-striped table-hover">
                                    <thead class="thead-dark">
                                        <tr>
                                            <th>Producto</th>
                                            <th>Cantidad</th>
                                            <th>Precio Unit.</th>
                                            <th>Descuento</th>
                                            <th>Total</th>
                                        </tr>
                                    </thead>
                                    <tbody>
                                        @forelse($invoice->details as $detail)
                                            @php
                                                // Calcular precios en ambas monedas si es multi-moneda
                                                $isMultiCurrency = $invoice->currency !== 'USD';
                                                if ($isMultiCurrency) {
                                                    $unitPriceLocal = $detail->unit_price ?? 0;
                                                    $totalPriceLocal = $detail->total_price ?? 0;
                                                    $discountLocal = $detail->discount_amount ?? 0;
                                                    
                                                    // Convertir a USD usando la tasa guardada
                                                    $rateForUSD = $invoice->exchange_rate_legal ?? $invoice->exchange_rate ?? 1;
                                                    if ($rateForUSD > 0) {
                                                        $unitPriceUSD = $unitPriceLocal / $rateForUSD;
                                                        $totalPriceUSD = $totalPriceLocal / $rateForUSD;
                                                        $discountUSD = $discountLocal / $rateForUSD;
                                                    } else {
                                                        $unitPriceUSD = $unitPriceLocal;
                                                        $totalPriceUSD = $totalPriceLocal;
                                                        $discountUSD = $discountLocal;
                                                    }
                                                } else {
                                                    $unitPriceUSD = $detail->unit_price ?? 0;
                                                    $totalPriceUSD = $detail->total_price ?? 0;
                                                    $discountUSD = $detail->discount_amount ?? 0;
                                                }
                                            @endphp
                                            <tr>
                                                <td>
                                                    <strong>{{ $detail->product->name ?? 'N/A' }}</strong><br>
                                                    <small class="text-muted">{{ $detail->product->code ?? 'N/A' }}</small>
                                                </td>
                                                <td>{{ number_format($detail->quantity_ordered ?? $detail->quantity ?? 0, 2) }}</td>
                                                <td>
                                                    <strong>${{ number_format($unitPriceUSD, 2) }}</strong>
                                                    @if($isMultiCurrency)
                                                        <br><small class="text-muted">{{ number_format($unitPriceLocal, 2) }} {{ $invoice->currency }}</small>
                                                    @endif
                                                </td>
                                                <td>
                                                    <strong>${{ number_format($discountUSD, 2) }}</strong>
                                                    @if($isMultiCurrency)
                                                        <br><small class="text-muted">{{ number_format($discountLocal, 2) }} {{ $invoice->currency }}</small>
                                                    @endif
                                                </td>
                                                <td>
                                                    <strong>${{ number_format($totalPriceUSD, 2) }}</strong>
                                                    @if($isMultiCurrency)
                                                        <br><small class="text-muted">{{ number_format($totalPriceLocal, 2) }} {{ $invoice->currency }}</small>
                                                    @endif
                                                </td>
                                            </tr>
                                        @empty
                                            <tr>
                                                <td colspan="5" class="text-center text-muted">No hay productos</td>
                                            </tr>
                                        @endforelse
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>

                    <!-- Totales -->
                    <div class="row">
                        <div class="col-md-6">
                            @if($invoice->notes)
                                <div class="card">
                                    <div class="card-header">
                                        <h6>Notas</h6>
                                    </div>
                                    <div class="card-body">
                                        <p>{{ $invoice->notes }}</p>
                                    </div>
                                </div>
                            @endif
                        </div>
                        <div class="col-md-6">
                            @php
                                // Calcular montos en USD
                                if ($invoice->currency === 'USD') {
                                    $subtotalUSD = $invoice->subtotal_usd ?? $invoice->subtotal ?? 0;
                                    $discountUSD = $invoice->discount_usd ?? $invoice->discount_amount ?? 0;
                                    $taxUSD = $invoice->tax_amount_usd ?? $invoice->tax_amount ?? 0;
                                    $totalUSD = $invoice->total_amount_usd ?? $invoice->total_amount ?? 0;
                                    $paidUSD = $invoice->amount_paid ?? 0;
                                    $dueUSD = $invoice->amount_due ?? 0;
                                    $isMultiCurrency = false;
                                } else {
                                    // Para multi-moneda, calcular USD y mantener valores originales
                                    $isMultiCurrency = true;
                                    $subtotalLocal = $invoice->subtotal ?? 0;
                                    $discountLocal = $invoice->discount_amount ?? 0;
                                    $taxLocal = $invoice->tax_amount ?? 0;
                                    $totalLocal = $invoice->total_amount ?? 0;
                                    $paidLocal = $invoice->amount_paid ?? 0;
                                    $dueLocal = $invoice->amount_due ?? 0;
                                    
                                    // Convertir a USD usando total_legal (USD legal a cobrar)
                                    if ($invoice->total_legal > 0 && $invoice->total_amount > 0) {
                                        $rate = $invoice->total_amount / $invoice->total_legal;
                                        $subtotalUSD = $subtotalLocal / $rate;
                                        $discountUSD = $discountLocal / $rate;
                                        $taxUSD = $taxLocal / $rate;
                                        $totalUSD = $invoice->total_legal;
                                        $paidUSD = $paidLocal / $rate;
                                        $dueUSD = $dueLocal / $rate;
                                    } else {
                                        $rate = $invoice->exchange_rate_legal ?? $invoice->exchange_rate ?? 1;
                                        $subtotalUSD = $rate > 0 ? ($subtotalLocal / $rate) : 0;
                                        $discountUSD = $rate > 0 ? ($discountLocal / $rate) : 0;
                                        $taxUSD = $rate > 0 ? ($taxLocal / $rate) : 0;
                                        $totalUSD = $rate > 0 ? ($totalLocal / $rate) : 0;
                                        $paidUSD = $rate > 0 ? ($paidLocal / $rate) : 0;
                                        $dueUSD = $rate > 0 ? ($dueLocal / $rate) : 0;
                                    }
                                }
                            @endphp
                            
                            @if($isMultiCurrency)
                                <!-- Monto a Cobrar (USD) -->
                                <div class="card border-success mb-3">
                                    <div class="card-header bg-success text-white">
                                        <h6 class="mb-0">
                                            <i class="fas fa-dollar-sign mr-2"></i>
                                            Monto a Cobrar (USD)
                                        </h6>
                                    </div>
                                    <div class="card-body">
                                        <div class="row">
                                            <div class="col-6">Subtotal:</div>
                                            <div class="col-6 text-right">${{ number_format($subtotalUSD, 2) }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Descuento:</div>
                                            <div class="col-6 text-right">${{ number_format($discountUSD, 2) }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Impuestos:</div>
                                            <div class="col-6 text-right">${{ number_format($taxUSD, 2) }}</div>
                                        </div>
                                        <hr>
                                        <div class="row">
                                            <div class="col-6"><strong>Total:</strong></div>
                                            <div class="col-6 text-right"><strong class="text-success">${{ number_format($totalUSD, 2) }}</strong></div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Pagado:</div>
                                            <div class="col-6 text-right">${{ number_format($paidUSD, 2) }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Pendiente:</div>
                                            <div class="col-6 text-right"><strong class="text-warning">${{ number_format($dueUSD, 2) }}</strong></div>
                                        </div>
                                    </div>
                                </div>
                                
                                <!-- Referencial para documento (VEF) -->
                                <div class="card border-secondary">
                                    <div class="card-header bg-secondary text-white">
                                        <h6 class="mb-0">
                                            <i class="fas fa-info-circle mr-2"></i>
                                            Referencial para documento ({{ $invoice->currency }})
                                        </h6>
                                    </div>
                                    <div class="card-body">
                                        <div class="row">
                                            <div class="col-6">Subtotal:</div>
                                            <div class="col-6 text-right">{{ number_format($subtotalLocal, 2) }} {{ $invoice->currency }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Descuento:</div>
                                            <div class="col-6 text-right">{{ number_format($discountLocal, 2) }} {{ $invoice->currency }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Impuestos:</div>
                                            <div class="col-6 text-right">{{ number_format($taxLocal, 2) }} {{ $invoice->currency }}</div>
                                        </div>
                                        <hr>
                                        <div class="row">
                                            <div class="col-6"><strong>Total:</strong></div>
                                            <div class="col-6 text-right"><strong>{{ number_format($totalLocal, 2) }} {{ $invoice->currency }}</strong></div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Pagado:</div>
                                            <div class="col-6 text-right">{{ number_format($paidLocal, 2) }} {{ $invoice->currency }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Pendiente:</div>
                                            <div class="col-6 text-right">{{ number_format($dueLocal, 2) }} {{ $invoice->currency }}</div>
                                        </div>
                                    </div>
                                </div>
                            @else
                                <!-- Solo USD -->
                                <div class="card">
                                    <div class="card-header">
                                        <h6>Resumen de Totales (USD)</h6>
                                    </div>
                                    <div class="card-body">
                                        <div class="row">
                                            <div class="col-6">Subtotal:</div>
                                            <div class="col-6 text-right">${{ number_format($subtotalUSD, 2) }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Descuento:</div>
                                            <div class="col-6 text-right">${{ number_format($discountUSD, 2) }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Impuestos:</div>
                                            <div class="col-6 text-right">${{ number_format($taxUSD, 2) }}</div>
                                        </div>
                                        <hr>
                                        <div class="row">
                                            <div class="col-6"><strong>Total:</strong></div>
                                            <div class="col-6 text-right"><strong>${{ number_format($totalUSD, 2) }}</strong></div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Pagado:</div>
                                            <div class="col-6 text-right">${{ number_format($paidUSD, 2) }}</div>
                                        </div>
                                        <div class="row">
                                            <div class="col-6">Pendiente:</div>
                                            <div class="col-6 text-right"><strong class="text-warning">${{ number_format($dueUSD, 2) }}</strong></div>
                                        </div>
                                    </div>
                                </div>
                            @endif
                        </div>
                    </div>

                    <!-- Información adicional -->
                    <div class="row mt-4">
                        <div class="col-12">
                            <div class="card">
                                <div class="card-header">
                                    <h6>Información Adicional</h6>
                                </div>
                                <div class="card-body">
                                    <div class="row">
                                        <div class="col-md-3">
                                            <strong>Vendedor:</strong><br>
                                            @if($invoice->salesman)
                                                {{ $invoice->salesman->first_name }} {{ $invoice->salesman->last_name }}
                                            @else
                                                <span class="text-muted">N/A</span>
                                            @endif
                                        </div>
                                        <div class="col-md-3">
                                            <strong>Creado por:</strong><br>
                                            @if($invoice->createdBy)
                                                {{ $invoice->createdBy->name }}
                                            @else
                                                <span class="text-muted">N/A</span>
                                            @endif
                                        </div>
                                        <div class="col-md-3">
                                            <strong>Fecha de creación:</strong><br>
                                            {{ $invoice->created_at ? $invoice->created_at->format('d/m/Y H:i') : 'N/A' }}
                                        </div>
                                        <div class="col-md-3">
                                            <strong>Última actualización:</strong><br>
                                            {{ $invoice->updated_at ? $invoice->updated_at->format('d/m/Y H:i') : 'N/A' }}
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>

                <div class="card-footer">
                    <div class="d-flex justify-content-between">
                        <div>
                            @if($invoice->status === 'draft')
                                <button type="button" class="btn btn-primary" onclick="processInvoice()">
                                    <i class="fas fa-check mr-1"></i>
                                    Procesar Factura
                                </button>
                            @endif
                        </div>
                        <div>
                            <button type="button" class="btn btn-info mr-2" onclick="printInvoice()">
                                <i class="fas fa-print mr-1"></i>
                                Imprimir
                            </button>
                            <button type="button" class="btn btn-success" onclick="sendInvoice()">
                                <i class="fas fa-paper-plane mr-1"></i>
                                Enviar por Email
                            </button>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
function processInvoice() {
    if (confirm('¿Estás seguro de procesar esta factura? Esto creará la cuenta por cobrar.')) {
        // Implementar procesamiento de factura
        alert('Funcionalidad de procesamiento en desarrollo');
    }
}

function printInvoice() {
    // Implementar impresión
    alert('Funcionalidad de impresión en desarrollo');
}

function sendInvoice() {
    // Implementar envío por email
    alert('Funcionalidad de envío por email en desarrollo');
}
</script>
@endpush