root
66 lines
2.3 KiB
PHP
66 lines
2.3 KiB
PHP
<?php
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namespace App\Libraries\Tuition;
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use App\Interfaces\TuitionCalculatorInterface;
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final class OldTuitionCalculatorService implements TuitionCalculatorInterface
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{
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public function calculateFamilyTuition(array $students, array $config): array
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{
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$gradeFee = (int) ($config['grade_fee'] ?? 9);
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$firstStudentFee = $this->toCents($config['first_student_fee'] ?? 370);
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$secondStudentFee = $this->toCents($config['second_student_fee'] ?? 200);
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$youthFee = $this->toCents($config['youth_fee'] ?? 200);
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usort($students, function (array $left, array $right) use ($gradeFee): int {
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$leftLevel = GradeLevelParser::parse($left['grade_level'] ?? null, $gradeFee);
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$rightLevel = GradeLevelParser::parse($right['grade_level'] ?? null, $gradeFee);
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return [$leftLevel, (int) ($left['student_id'] ?? 0)] <=> [$rightLevel, (int) ($right['student_id'] ?? 0)];
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});
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$regularCount = 0;
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$details = [];
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foreach ($students as $student) {
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$level = GradeLevelParser::parse($student['grade_level'] ?? null, $gradeFee);
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if ($level > $gradeFee) {
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$amountCents = $youthFee;
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$rule = 'old_youth_fee';
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} else {
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$regularCount++;
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$amountCents = $regularCount === 1 ? $firstStudentFee : $secondStudentFee;
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$rule = $regularCount === 1 ? 'old_first_student_fee' : 'old_second_student_fee';
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}
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$details[] = [
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'student_id' => (int) ($student['student_id'] ?? 0),
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'student_name' => (string) ($student['student_name'] ?? ''),
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'grade_level' => $student['grade_level'] ?? null,
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'rule' => $rule,
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'amount' => $this->fromCents($amountCents),
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];
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}
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$total = array_sum(array_map(fn (array $detail): int => $this->toCents($detail['amount']), $details));
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return [
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'calculator' => 'old',
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'total' => $this->fromCents($total),
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'details' => $details,
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];
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}
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private function toCents($amount): int
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{
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return (int) round(((float) $amount) * 100);
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}
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private function fromCents(int $cents): string
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{
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return number_format($cents / 100, 2, '.', '');
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}
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}
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