@extends('layouts.app')

@section('title', 'Nueva Venta')

@section('main')
<div class="py-12 bg-gray-100 min-h-screen">
    <div class="max-w-7xl mx-auto sm:px-6 lg:px-8">
        
        <div class="bg-white overflow-hidden shadow-sm sm:rounded-lg p-6">
            <div class="mb-6 border-b pb-2">
                <h2 class="text-2xl font-bold text-gray-800">Nueva Venta en Mostrador</h2>
            </div>

            @if (session('success'))
                <div class="bg-green-100 border border-green-400 text-green-700 px-4 py-3 rounded relative mb-4">
                    <strong class="font-bold">¡Éxito!</strong> {{ session('success') }}
                </div>
            @endif

            @if (session('error'))
                <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded relative mb-4">
                    <strong class="font-bold">Error:</strong> {{ session('error') }}
                </div>
            @endif
            
            @if ($errors->any())
                <div class="bg-red-50 text-red-600 p-4 mb-4 rounded border border-red-200">
                    <ul>
                        @foreach ($errors->all() as $error)
                            <li>• {{ $error }}</li>
                        @endforeach
                    </ul>
                </div>
            @endif



            <form action="{{ route('sales.store') }}" method="POST" id="sale-form">
                @csrf

                <div class="mb-6 bg-gray-50 p-4 rounded-lg border border-gray-200">
                    <label class="block text-sm font-medium text-gray-700 mb-1">Cliente</label>
                    <div class="flex gap-2">
                        <select name="client_id" class="select2-enable w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 py-2 px-3 border">
                            <option value="">-- Consumidor Final (Anónimo) --</option>
                            @foreach($clients as $client)
                                <option value="{{ $client->id }}">{{ $client->nombre }} ({{ $client->telefono }})</option>
                            @endforeach
                        </select>
                        
                        <a href="{{ route('clients.create') }}" target="_blank" class="bg-indigo-100 text-indigo-700 hover:bg-indigo-200 px-4 py-2 rounded-md font-bold flex items-center border border-indigo-200" title="Crear nuevo cliente">
                            +
                        </a>
                    </div>
                </div>

                <div id="items-container" class="space-y-4">
                    <div class="item-row grid grid-cols-1 md:grid-cols-12 gap-4 items-end bg-gray-50 p-4 rounded-lg border border-gray-200">
                        <div class="md:col-span-6">
                            <label class="block text-sm font-medium text-gray-700 mb-1">Producto</label>
                            <select name="items[0][product_id]" class="product-select select2-enable w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 py-2 px-3 border" required onchange="calcularTotal()">
                                <option value="" data-price="0" selected disabled>Seleccione...</option>
                                @foreach($products as $product)
                                    <option value="{{ $product->id }}" data-price="{{ $product->precio }}">
                                        {{ $product->codigo }} - {{ $product->nombre }} (${{ $product->precio }})
                                    </option>
                                @endforeach
                            </select>
                        </div>

                        <div class="md:col-span-3">
                            <label class="block text-sm font-medium text-gray-700 mb-1">Cantidad</label>
                            <input type="number" name="items[0][quantity]" value="1" min="1" class="quantity-input w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 py-2 px-3 border" required oninput="calcularTotal()">
                        </div>

                        <div class="md:col-span-2 text-right font-mono text-gray-600 self-center pt-6">
                            $<span class="row-subtotal">0.00</span>
                        </div>

                        <div class="md:col-span-1 text-right">
                             <button type="button" class="text-gray-400 cursor-not-allowed" disabled>
                                <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-6 h-6 inline">
                                  <path stroke-linecap="round" stroke-linejoin="round" d="M14.74 9l-.346 9m-4.788 0L9.26 9m9.968-3.21c.342.052.682.107 1.022.166m-1.022-.165L18.16 19.673a2.25 2.25 0 01-2.244 2.077H8.084a2.25 2.25 0 01-2.244-2.077L4.772 5.79m14.456 0a48.108 48.108 0 00-3.478-.397m-12 .562c.34-.059.68-.114 1.022-.165m0 0a48.11 48.11 0 013.478-.397m7.5 0v-.916c0-1.18-.91-2.164-2.09-2.201a51.964 51.964 0 00-3.32 0c-1.18.037-2.09 1.022-2.09 2.201v.916m7.5 0a48.667 48.667 0 00-7.5 0" />
                                </svg>
                             </button>
                        </div>
                    </div>
                </div>

                <div class="mt-4">
                    <button type="button" onclick="agregarFila()" class="flex items-center text-indigo-600 hover:text-indigo-800 font-semibold">
                        <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 mr-1">
                          <path stroke-linecap="round" stroke-linejoin="round" d="M12 4.5v15m7.5-7.5h-15" />
                        </svg>
                        Agregar otro producto
                    </button>
                </div>

                <div class="flex justify-end mt-6 border-t pt-4">
                    <div class="text-2xl font-bold text-gray-800">
                        Total a Pagar: <span class="text-indigo-600">$<span id="total-display">0.00</span></span>
                    </div>
                </div>

                <div class="mt-6 grid grid-cols-1 md:grid-cols-2 gap-6 items-center">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Método de Pago</label>
                        <select name="payment_method" class="w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 py-2 px-3 border">
                            <option value="Efectivo">Efectivo</option>
                            <option value="Tarjeta de Débito">Tarjeta de Débito</option>
                            <option value="Tarjeta de Crédito">Tarjeta de Crédito</option>
                            <option value="Transferencia">Transferencia</option>
                        </select>
                    </div>

                    <div class="flex items-end gap-4 justify-end">
                        <a href="{{ url('/') }}" class="bg-white hover:bg-gray-100 text-gray-800 font-semibold py-2 px-4 border border-gray-400 rounded shadow">
                            Cancelar
                        </a>
                        <button type="submit" class="bg-indigo-600 hover:bg-indigo-700 text-white font-bold py-2 px-6 rounded shadow-lg">
                            Confirmar Venta
                        </button>
                    </div>
                </div>
            </form>
        </div>
    </div>
</div>

@push('scripts')
<script>
    let itemIndex = 0;

    $(document).ready(function() {
        inicializarSelect2();
    });

    function inicializarSelect2() {
        $('.select2-enable').select2({
            width: '100%',
            placeholder: "Escribe para buscar...",
            allowClear: true
        });
    }

    function agregarFila() {
        itemIndex++;
        const container = document.getElementById('items-container');
        const firstRow = container.querySelector('.item-row');

        // 1. Destruimos Select2 temporalmente para clonar limpio
        $('.select2-enable').select2('destroy');

        // 2. Clonamos
        const newRow = firstRow.cloneNode(true);

        // 3. Reactivamos en los originales
        inicializarSelect2();

        // Limpiamos valores de la copia
        const select = newRow.querySelector('select');
        const input = newRow.querySelector('input');
        const subtotal = newRow.querySelector('.row-subtotal');
        
        select.name = `items[${itemIndex}][product_id]`;
        select.value = ""; 
        
        input.name = `items[${itemIndex}][quantity]`;
        input.value = 1; 
        
        subtotal.innerText = "0.00"; 

        // Botón Eliminar
        const deleteBtnDiv = newRow.querySelector('div:last-child');
        deleteBtnDiv.innerHTML = `
            <button type="button" onclick="eliminarFila(this)" class="text-red-500 hover:text-red-700">
                <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-6 h-6 inline">
                  <path stroke-linecap="round" stroke-linejoin="round" d="M14.74 9l-.346 9m-4.788 0L9.26 9m9.968-3.21c.342.052.682.107 1.022.166m-1.022-.165L18.16 19.673a2.25 2.25 0 01-2.244 2.077H8.084a2.25 2.25 0 01-2.244-2.077L4.772 5.79m14.456 0a48.108 48.108 0 00-3.478-.397m-12 .562c.34-.059.68-.114 1.022-.165m0 0a48.11 48.11 0 013.478-.397m7.5 0v-.916c0-1.18-.91-2.164-2.09-2.201a51.964 51.964 0 00-3.32 0c-1.18.037-2.09 1.022-2.09 2.201v.916m7.5 0a48.667 48.667 0 00-7.5 0" />
                </svg>
            </button>
        `;

        container.appendChild(newRow);
        
        // 4. Inicializamos en el nuevo
        inicializarSelect2();
        
        // Evento extra para Select2
        $(select).on('select2:select', function (e) {
            calcularTotal();
        });
    }

    function eliminarFila(button) {
        const row = button.closest('.item-row');
        row.remove();
        calcularTotal();
    }

    function calcularTotal() {
        let total = 0;
        const rows = document.querySelectorAll('.item-row');

        rows.forEach(row => {
            const select = row.querySelector('.product-select');
            const input = row.querySelector('.quantity-input');
            const subtotalSpan = row.querySelector('.row-subtotal');

            const selectedOption = $(select).find(':selected');
            const price = parseFloat(selectedOption.attr('data-price')) || 0;
            const quantity = parseInt(input.value) || 0;

            const subtotal = price * quantity;
            subtotalSpan.innerText = subtotal.toFixed(2);

            total += subtotal;
        });

        document.getElementById('total-display').innerText = total.toFixed(2);
    }

    $(document).on('select2:select', '.product-select', function (e) {
        calcularTotal();
    });
</script>
@endpush
@endsection