71 lines
2.3 KiB
PHP
71 lines
2.3 KiB
PHP
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<?php
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namespace App\Services;
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use App\Models\Vat;
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use App\Models\VatTransaction;
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class PurchaseVatTransaction
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{
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/**
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* Store VAT transactions for a purchase detail.
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*/
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public static function storeVatTransactions($business, $detail, $product, $party = null)
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{
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$vatAmountTotal = 0;
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if ($product->vat_id) {
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$vat = Vat::find($product->vat_id);
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if ($vat) {
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$vatRate = $vat->rate;
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$qty = $detail->quantities;
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$purchasePrice = $detail->productPurchasePrice;
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// For purchases, it's often inclusive in the purchase price provided by supplier
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// or on top. We'll follow the standard logic.
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if ($product->vat_type === 'inclusive') {
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$vatAmount = ($purchasePrice * $vatRate) / (100 + $vatRate);
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} else {
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$vatAmount = ($purchasePrice * $vatRate) / 100;
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}
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$vatAmountTotal = $vatAmount * $qty;
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VatTransaction::create([
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'business_id' => $business->id,
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'vat_id' => $vat->id,
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'vat_rate' => $vatRate,
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'vat_amount' => $vatAmountTotal,
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'vatable_id' => $detail->id,
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'vatable_type' => get_class($detail),
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]);
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}
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}
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return $vatAmountTotal;
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}
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/**
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* Adjust VAT on purchase return.
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*/
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public static function productReturnVatCalculation($detail, $requested_qty, $returnDetail, $totalQty)
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{
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$vatTransaction = VatTransaction::where('vatable_id', $detail->id)
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->where('vatable_type', get_class($detail))
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->first();
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if ($vatTransaction) {
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$returnVatAmount = ($vatTransaction->vat_amount / $totalQty) * $requested_qty;
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VatTransaction::create([
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'business_id' => $vatTransaction->business_id,
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'vat_id' => $vatTransaction->vat_id,
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'vat_rate' => $vatTransaction->vat_rate,
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'vat_amount' => -$returnVatAmount,
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'vatable_id' => $returnDetail->id,
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'vatable_type' => get_class($returnDetail),
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]);
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}
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}
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}
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