@extends('layouts.app')

@section('title', 'Productos Más Vendidos')

@section('content')
<div class="container-fluid">
    <div class="row mb-4">
        <div class="col-12">
            <div class="d-flex justify-content-between align-items-center">
                <h2 class="mb-0">
                    <i class="fas fa-box me-2"></i>Productos Más Vendidos
                </h2>
                <div>
                    <a href="{{ route('admin.reports.index') }}" class="btn btn-secondary">
                        <i class="fas fa-arrow-left me-2"></i>Volver a Reportes
                    </a>
                    <a href="{{ route('admin.reports.top-products', array_merge(request()->all(), ['export' => 'excel'])) }}" class="btn btn-success">
                        <i class="fas fa-file-excel me-2"></i>Exportar Excel
                    </a>
                    <button onclick="window.print()" class="btn btn-primary">
                        <i class="fas fa-print me-2"></i>Imprimir
                    </button>
                </div>
            </div>
        </div>
    </div>

    <!-- Filtros -->
    <div class="card shadow-sm mb-4">
        <div class="card-header bg-light">
            <h5 class="mb-0">
                <i class="fas fa-filter me-2"></i>Filtros
            </h5>
        </div>
        <div class="card-body">
            <form method="GET" action="{{ route('admin.reports.top-products') }}" class="row g-3">
                <div class="col-md-3">
                    <label for="date_from" class="form-label">Fecha Desde</label>
                    <input type="date" name="date_from" id="date_from" class="form-control" value="{{ $dateFrom ?? '' }}">
                </div>
                <div class="col-md-3">
                    <label for="date_to" class="form-label">Fecha Hasta</label>
                    <input type="date" name="date_to" id="date_to" class="form-control" value="{{ $dateTo ?? '' }}">
                </div>
                <div class="col-md-3">
                    <label for="limit" class="form-label">Top N Productos</label>
                    <input type="number" name="limit" id="limit" class="form-control" value="{{ $limit ?? 50 }}" min="1" max="200">
                </div>
                <div class="col-md-3 d-flex align-items-end">
                    <button type="submit" class="btn btn-primary me-2">
                        <i class="fas fa-search me-2"></i>Buscar
                    </button>
                    <a href="{{ route('admin.reports.top-products') }}" class="btn btn-secondary">
                        <i class="fas fa-redo me-2"></i>Limpiar
                    </a>
                </div>
            </form>
        </div>
    </div>

    <!-- Resumen -->
    <div class="card shadow-sm mb-4">
        <div class="card-header bg-success text-white">
            <h5 class="mb-0">
                <i class="fas fa-chart-bar me-2"></i>Resumen
            </h5>
        </div>
        <div class="card-body">
            <div class="row text-center">
                <div class="col-md-4">
                    <h3 class="text-success mb-0">{{ count($topProducts) }}</h3>
                    <p class="text-muted mb-0">Productos Listados</p>
                </div>
                <div class="col-md-4">
                    <h3 class="text-primary mb-0">{{ number_format(array_sum(array_map(function($item) { return $item['total_quantity'] ?? 0; }, $topProducts)), 2) }}</h3>
                    <p class="text-muted mb-0">Unidades Vendidas</p>
                </div>
                <div class="col-md-4">
                    <h3 class="text-info mb-0">${{ number_format(array_sum(array_map(function($item) { return $item['total_revenue'] ?? 0; }, $topProducts)), 2) }}</h3>
                    <p class="text-muted mb-0">Ingresos Totales</p>
                </div>
            </div>
        </div>
    </div>

    <!-- Gráfico de Top Products -->
    @if(count($topProducts) > 0)
    <div class="card shadow-sm mb-4">
        <div class="card-header bg-primary text-white">
            <h5 class="mb-0">
                <i class="fas fa-chart-bar me-2"></i>Gráfico de Productos Más Vendidos (Top 10)
            </h5>
        </div>
        <div class="card-body">
            <canvas id="topProductsChart" height="80"></canvas>
        </div>
    </div>
    @endif

    <!-- Tabla de Productos -->
    <div class="card shadow-sm">
        <div class="card-header bg-light">
            <h5 class="mb-0">
                <i class="fas fa-list me-2"></i>Top {{ $limit ?? 50 }} Productos Más Vendidos
            </h5>
        </div>
        <div class="card-body p-0">
            <div class="table-responsive">
                <table class="table table-bordered table-striped table-hover mb-0">
                    <thead class="table-dark">
                        <tr>
                            <th>#</th>
                            <th>Producto</th>
                            <th>SKU</th>
                            <th>Categoría</th>
                            <th class="text-end">Cantidad Vendida</th>
                            <th class="text-end">Facturas</th>
                            <th class="text-end">Precio Promedio</th>
                            <th class="text-end">Costo Unitario</th>
                            <th class="text-end">Ingresos Totales</th>
                            <th class="text-end">Margen %</th>
                            <th class="text-end">Margen Total</th>
                        </tr>
                    </thead>
                    <tbody>
                        @forelse($topProducts as $index => $item)
                            <tr>
                                <td>{{ $index + 1 }}</td>
                                <td>
                                    <strong>{{ $item['product']->name }}</strong>
                                    @if($item['product']->brand)
                                        <br><small class="text-muted">{{ $item['product']->brand->name }}</small>
                                    @endif
                                </td>
                                <td>{{ $item['product']->sku ?? 'N/A' }}</td>
                                <td>{{ $item['product']->category->name ?? 'N/A' }}</td>
                                <td class="text-end">
                                    <span class="badge bg-primary">{{ number_format($item['total_quantity'], 2) }}</span>
                                </td>
                                <td class="text-end">{{ number_format($item['invoice_count'], 0) }}</td>
                                <td class="text-end">${{ number_format($item['avg_price'], 2) }}</td>
                                <td class="text-end">${{ number_format($item['cost_price'], 2) }}</td>
                                <td class="text-end">
                                    <strong>${{ number_format($item['total_revenue'], 2) }}</strong>
                                </td>
                                <td class="text-end">
                                    <span class="badge bg-{{ $item['margin'] > 30 ? 'success' : ($item['margin'] > 15 ? 'warning' : 'danger') }}">
                                        {{ number_format($item['margin'], 2) }}%
                                    </span>
                                </td>
                                <td class="text-end">
                                    <strong class="text-{{ $item['margin_amount'] > 0 ? 'success' : 'danger' }}">
                                        ${{ number_format($item['margin_amount'], 2) }}
                                    </strong>
                                </td>
                            </tr>
                        @empty
                            <tr>
                                <td colspan="11" class="text-center py-4">
                                    <i class="fas fa-info-circle me-2"></i>No se encontraron productos vendidos en el período seleccionado.
                                </td>
                            </tr>
                        @endforelse
                    </tbody>
                    @if(count($topProducts) > 0)
                    <tfoot class="table-light">
                        <tr>
                            <th colspan="4" class="text-end">Totales:</th>
                            <th class="text-end">{{ number_format(array_sum(array_map(function($item) { return $item['total_quantity'] ?? 0; }, $topProducts)), 2) }}</th>
                            <th class="text-end">-</th>
                            <th class="text-end">-</th>
                            <th class="text-end">-</th>
                            <th class="text-end">${{ number_format(array_sum(array_map(function($item) { return $item['total_revenue'] ?? 0; }, $topProducts)), 2) }}</th>
                            <th class="text-end">-</th>
                            <th class="text-end">${{ number_format(array_sum(array_map(function($item) { return $item['margin_amount'] ?? 0; }, $topProducts)), 2) }}</th>
                        </tr>
                    </tfoot>
                    @endif
                </table>
            </div>
        </div>
    </div>
</div>

<style>
    @media print {
        .btn, .card-header, .navbar, .sidebar {
            display: none !important;
        }
        .card {
            border: none !important;
            box-shadow: none !important;
        }
    }
</style>

@push('scripts')
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function() {
    @if(count($topProducts) > 0)
    @php
        $chartData = array_slice($topProducts, 0, 10);
        $chartLabels = [];
        $chartQuantities = [];
        $chartRevenues = [];
        foreach($chartData as $item) {
            $productName = $item['product']->name ?? 'Sin nombre';
            $chartLabels[] = strlen($productName) > 20 ? substr($productName, 0, 20) . '...' : $productName;
            $chartQuantities[] = floatval($item['total_quantity'] ?? 0);
            $chartRevenues[] = floatval($item['total_revenue'] ?? 0);
        }
    @endphp
    const chartLabels = @json($chartLabels);
    const chartQuantities = @json($chartQuantities);
    const chartRevenues = @json($chartRevenues);
    const ctx = document.getElementById('topProductsChart');
    
    if (ctx) {
        new Chart(ctx, {
            type: 'bar',
            data: {
                labels: chartLabels,
                datasets: [{
                    label: 'Unidades Vendidas',
                    data: chartQuantities,
                    backgroundColor: 'rgba(54, 162, 235, 0.6)',
                    borderColor: 'rgba(54, 162, 235, 1)',
                    borderWidth: 1
                }, {
                    label: 'Ingresos ($)',
                    data: chartRevenues,
                    backgroundColor: 'rgba(75, 192, 192, 0.6)',
                    borderColor: 'rgba(75, 192, 192, 1)',
                    borderWidth: 1,
                    yAxisID: 'y1'
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: true,
                scales: {
                    y: {
                        beginAtZero: true,
                        title: {
                            display: true,
                            text: 'Unidades Vendidas'
                        }
                    },
                    y1: {
                        type: 'linear',
                        display: true,
                        position: 'right',
                        beginAtZero: true,
                        title: {
                            display: true,
                            text: 'Ingresos ($)'
                        },
                        grid: {
                            drawOnChartArea: false
                        }
                    }
                },
                plugins: {
                    legend: {
                        display: true,
                        position: 'top'
                    },
                    tooltip: {
                        callbacks: {
                            label: function(context) {
                                if (context.datasetIndex === 0) {
                                    return 'Unidades: ' + context.parsed.y.toLocaleString();
                                } else {
                                    return 'Ingresos: $' + context.parsed.y.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
                                }
                            }
                        }
                    }
                }
            }
        });
    }
    @endif
});
</script>
@endpush
@endsection