121 lines
3.9 KiB
PHP
121 lines
3.9 KiB
PHP
<?php namespace App\Services;
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use App\Models\CashRegister;
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use App\Models\Sale;
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use App\Models\SaleDetail;
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use App\Models\Inventory;
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use Illuminate\Support\Facades\DB;
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class SaleService
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{
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/**
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* Crear una nueva venta con sus detalles
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*
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*/
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public function createSale(array $data)
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{
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return DB::transaction(function () use ($data) {
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// Calcular el cambio si es pago en efectivo
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$cashReceived = null;
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$change = null;
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if ($data['payment_method'] === 'cash' && isset($data['cash_received'])) {
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$cashReceived = $data['cash_received'];
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$change = $cashReceived - $data['total'];
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}
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// 1. Crear la venta principal
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$sale = Sale::create([
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'user_id' => $data['user_id'],
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'cash_register_id' => $data['cash_register_id'] ?? $this->getCurrentCashRegister($data['user_id']),
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'invoice_number' => $data['invoice_number'] ?? $this->generateInvoiceNumber(),
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'subtotal' => $data['subtotal'],
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'tax' => $data['tax'],
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'total' => $data['total'],
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'cash_received' => $cashReceived,
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'change' => $change,
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'payment_method' => $data['payment_method'],
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'status' => $data['status'] ?? 'completed',
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]);
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// 2. Crear los detalles de la venta y actualizar stock
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foreach ($data['items'] as $item) {
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// Crear detalle de venta
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SaleDetail::create([
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'sale_id' => $sale->id,
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'inventory_id' => $item['inventory_id'],
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'product_name' => $item['product_name'],
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'quantity' => $item['quantity'],
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'unit_price' => $item['unit_price'],
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'subtotal' => $item['subtotal'],
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]);
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// Descontar del stock
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$inventory = Inventory::find($item['inventory_id']);
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if ($inventory) {
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$inventory->decrement('stock', $item['quantity']);
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}
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}
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// 3. Retornar la venta con sus relaciones cargadas
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return $sale->load(['details.inventory', 'user']);
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});
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}
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/**
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* Cancelar una venta y restaurar el stock
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*
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*/
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public function cancelSale(Sale $sale)
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{
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return DB::transaction(function () use ($sale) {
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// Verificar que la venta esté completada
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if ($sale->status !== 'completed') {
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throw new \Exception('Solo se pueden cancelar ventas completadas.');
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}
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// Restaurar stock de cada producto
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foreach ($sale->details as $detail) {
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$inventory = Inventory::find($detail->inventory_id);
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if ($inventory) {
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$inventory->increment('stock', $detail->quantity);
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}
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}
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// Marcar venta como cancelada
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$sale->update(['status' => 'cancelled']);
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return $sale->fresh(['details.inventory', 'user']);
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});
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}
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/**
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* Generar número de factura único
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* Formato: INV-YYYYMMDD-0001
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*/
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private function generateInvoiceNumber(): string
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{
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$prefix = 'INV-';
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$date = now()->format('Ymd');
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// Obtener la última venta del día
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$lastSale = Sale::whereDate('created_at', today())
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->orderBy('id', 'desc')
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->first();
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// Incrementar secuencial
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$sequential = $lastSale ? (intval(substr($lastSale->invoice_number, -4)) + 1) : 1;
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return $prefix . $date . '-' . str_pad($sequential, 4, '0', STR_PAD_LEFT);
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}
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private function getCurrentCashRegister($userId)
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{
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$register = CashRegister::where('user_id', $userId)
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->where('status', 'open')
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->first();
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return $register ? $register->id : null;
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}
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}
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