111 lines
3.9 KiB
PHP
111 lines
3.9 KiB
PHP
<?php
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namespace App\Services\Calculation;
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use App\Models\Contract;
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class PriceCalculationService
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{
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public static function forContract(Contract $contract): CalculationPipeline
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{
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$pipeline = new CalculationPipeline();
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// Bước 1: Tổng giá trị trước chiết khấu
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$pipeline->addStep(new CalculationStep(
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name: 'Giá trị QSDĐ',
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outputKey: 'land_value',
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formula: fn ($data) => (float) ($data['land_value'] ?? 0),
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roundingRule: RoundingRule::UNIT,
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dependencies: []
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));
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$pipeline->addStep(new CalculationStep(
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name: 'Giá trị Móng',
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outputKey: 'foundation_value',
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formula: fn ($data) => (float) ($data['foundation_value'] ?? 0),
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roundingRule: RoundingRule::UNIT,
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dependencies: []
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));
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$pipeline->addStep(new CalculationStep(
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name: 'Tổng giá trị trước chiết khấu',
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outputKey: 'subtotal',
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formula: fn ($data) => $data['land_value'] + $data['foundation_value'],
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roundingRule: RoundingRule::UNIT,
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dependencies: ['land_value', 'foundation_value']
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));
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// Bước 2: Chiết khấu
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$pipeline->addStep(new CalculationStep(
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name: 'Chiết khấu',
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outputKey: 'discount_amount',
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formula: function ($data) {
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$details = $data['discount_details'] ?? [];
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if (!empty($details['total_amount'])) {
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return (float) $details['total_amount'];
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}
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if (!empty($details['total_percentage'])) {
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return $data['subtotal'] * ((float) $details['total_percentage'] / 100);
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}
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return 0;
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},
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roundingRule: RoundingRule::UNIT,
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dependencies: ['subtotal', 'discount_details']
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));
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// Bước 3: Sau chiết khấu
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$pipeline->addStep(new CalculationStep(
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name: 'Giá trị sau chiết khấu',
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outputKey: 'net_value',
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formula: fn ($data) => $data['subtotal'] - $data['discount_amount'],
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roundingRule: RoundingRule::UNIT,
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dependencies: ['subtotal', 'discount_amount']
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));
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// Bước 4: VAT (nếu có)
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$pipeline->addStep(new CalculationStep(
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name: 'Thuế VAT',
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outputKey: 'vat_amount',
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formula: function ($data) {
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$vatRate = (float) ($data['vat_rate'] ?? 0);
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return $data['net_value'] * ($vatRate / 100);
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},
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roundingRule: RoundingRule::UNIT,
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dependencies: ['net_value', 'vat_rate']
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));
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// Bước 5: Tổng thanh toán
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$pipeline->addStep(new CalculationStep(
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name: 'Tổng thanh toán',
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outputKey: 'total_payment',
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formula: fn ($data) => $data['net_value'] + $data['vat_amount'],
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roundingRule: RoundingRule::UNIT,
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dependencies: ['net_value', 'vat_amount']
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));
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return $pipeline;
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}
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public static function calculateForContract(Contract $contract, array $overrides = []): CalculationResult
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{
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$pipeline = self::forContract($contract);
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$data = [
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'land_value' => (float) $contract->land_value,
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'foundation_value' => (float) $contract->foundation_value,
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'discount_details' => $contract->discount_details ?? [],
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'vat_rate' => (float) ($contract->metadata['vat_rate'] ?? 0),
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];
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// Áp dụng ghi đè nếu có
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if (!empty($overrides)) {
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foreach ($pipeline->getSteps() as $step) {
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if (isset($overrides[$step->outputKey()])) {
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$step->override((int) $overrides[$step->outputKey()]);
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}
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}
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}
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return $pipeline->execute($data);
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}
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}
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