root
121 lines
4.0 KiB
PHP
121 lines
4.0 KiB
PHP
<?php
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namespace App\Services\Fees;
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use App\Models\Payment;
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use Illuminate\Support\Facades\Log;
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class FeeRefundCalculatorService
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{
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public function __construct(
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private FeeConfigService $config,
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private FeeStudentFeeService $studentFees
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) {
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}
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public function calculateRefund(array $students, int $parentId): array
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{
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$schoolYear = $this->config->getSchoolYear();
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$refundDeadline = $this->config->getRefundDeadline();
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$weeksOfStudy = $this->config->getWeeksOfStudy();
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$schoolEndDate = $this->config->getSchoolEndDate();
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$totalPaid = Payment::getTotalPaidByParentId($parentId, $schoolYear);
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if ($totalPaid <= 0) {
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return $this->resultPayload(0.0, $totalPaid, $refundDeadline, $schoolEndDate, $weeksOfStudy, 0);
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}
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$registered = [];
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$withdrawn = [];
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foreach ($students as $student) {
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$status = strtolower((string) ($student['enrollment_status'] ?? ''));
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$admission = strtolower((string) ($student['admission_status'] ?? ''));
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if (in_array($status, ['withdrawn', 'refund pending', 'withdraw under review'], true)) {
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$withdrawn[] = $student;
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continue;
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}
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if (in_array($status, ['enrolled', 'payment pending'], true) && $admission === 'accepted') {
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$registered[] = $student;
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}
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}
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if (empty($withdrawn)) {
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return $this->resultPayload(0.0, $totalPaid, $refundDeadline, $schoolEndDate, $weeksOfStudy, 0);
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}
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$allStudents = array_merge($registered, $withdrawn);
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$allStudents = $this->studentFees->assignFees($allStudents);
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$feeByStudentId = [];
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foreach ($allStudents as $student) {
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$key = $student['student_id'] ?? null;
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if ($key === null) {
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continue;
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}
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$feeByStudentId[(string) $key] = (float) ($student['tuition_fee'] ?? 0);
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}
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$refundAmount = 0.0;
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$withdrawCount = 0;
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foreach ($withdrawn as $student) {
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$withdrawalDate = $student['withdrawal_date'] ?? null;
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if (!$withdrawalDate) {
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Log::warning('Missing withdraw date for student', ['student_id' => $student['student_id'] ?? null]);
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continue;
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}
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if (!$refundDeadline || strtotime($withdrawalDate) > strtotime($refundDeadline)) {
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continue;
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}
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if (!$schoolEndDate) {
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continue;
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}
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$withdrawDateObj = new \DateTime(date('Y-m-d', strtotime($withdrawalDate)));
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$schoolEndDateObj = new \DateTime($schoolEndDate);
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$daysRemaining = $withdrawDateObj->diff($schoolEndDateObj)->days;
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$weeksRemaining = min($weeksOfStudy, max(0, (int) ceil($daysRemaining / 7)));
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$studentId = (string) ($student['student_id'] ?? '');
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$studentFee = $feeByStudentId[$studentId] ?? 0.0;
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if ($studentFee <= 0 || $weeksOfStudy <= 0) {
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continue;
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}
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$proportionalRefund = ($studentFee / $weeksOfStudy) * $weeksRemaining;
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$refundAmount += $proportionalRefund;
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$withdrawCount++;
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}
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if ($refundAmount > $totalPaid) {
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$refundAmount = $totalPaid;
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}
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return $this->resultPayload($refundAmount, $totalPaid, $refundDeadline, $schoolEndDate, $weeksOfStudy, $withdrawCount);
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}
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private function resultPayload(
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float $refund,
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float $totalPaid,
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?string $refundDeadline,
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?string $schoolEndDate,
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float $weeksOfStudy,
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int $withdrawCount
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): array {
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return [
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'refund_amount' => round($refund, 2),
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'total_paid' => round($totalPaid, 2),
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'refund_deadline' => $refundDeadline,
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'school_end_date' => $schoolEndDate,
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'weeks_of_study' => $weeksOfStudy,
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'withdrawn_students' => $withdrawCount,
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];
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}
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}
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