root
687 lines
25 KiB
PHP
687 lines
25 KiB
PHP
<?php
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namespace App\Libraries;
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use App\Interfaces\TuitionCalculatorInterface;
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use App\Libraries\Tuition\NewTuitionCalculatorService;
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use App\Libraries\Tuition\OldTuitionCalculatorService;
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use App\Models\AdditionalChargeModel;
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use App\Models\ClassSectionModel;
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use App\Models\ConfigurationModel;
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use App\Models\DiscountUsageModel;
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use App\Models\EnrollmentModel;
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use App\Models\EventChargesModel;
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use App\Models\InvoiceEventModel;
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use App\Models\InvoiceLineModel;
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use App\Models\InvoiceModel;
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use App\Models\PaymentModel;
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use App\Models\RefundModel;
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use App\Models\RefundPayoutModel;
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use App\Models\StudentClassModel;
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use App\Models\StudentModel;
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class InvoiceLedgerService
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{
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protected InvoiceModel $invoiceModel;
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protected PaymentModel $paymentModel;
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protected RefundModel $refundModel;
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protected ?RefundPayoutModel $refundPayoutModel = null;
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protected DiscountUsageModel $discountUsageModel;
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protected AdditionalChargeModel $additionalChargeModel;
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protected ConfigurationModel $configurationModel;
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protected EnrollmentModel $enrollmentModel;
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protected StudentClassModel $studentClassModel;
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protected ClassSectionModel $classSectionModel;
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protected EventChargesModel $eventChargesModel;
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protected InvoiceEventModel $invoiceEventModel;
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protected ?InvoiceLineModel $invoiceLineModel = null;
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protected StudentModel $studentModel;
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protected TuitionCalculatorInterface $oldCalculator;
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protected TuitionCalculatorInterface $newCalculator;
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public function __construct()
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{
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$this->invoiceModel = new InvoiceModel();
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$this->paymentModel = new PaymentModel();
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$this->refundModel = new RefundModel();
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$this->refundPayoutModel = new RefundPayoutModel();
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$this->discountUsageModel = new DiscountUsageModel();
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$this->additionalChargeModel = new AdditionalChargeModel();
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$this->configurationModel = new ConfigurationModel();
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$this->enrollmentModel = new EnrollmentModel();
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$this->studentClassModel = new StudentClassModel();
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$this->classSectionModel = new ClassSectionModel();
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$this->eventChargesModel = new EventChargesModel();
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$this->invoiceEventModel = new InvoiceEventModel();
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$this->invoiceLineModel = new InvoiceLineModel();
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$this->studentModel = new StudentModel();
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$this->oldCalculator = new OldTuitionCalculatorService();
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$this->newCalculator = new NewTuitionCalculatorService();
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}
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public function calculateInvoice(int $invoiceId): array
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{
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$invoice = $this->loadInvoice($invoiceId);
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if ($invoice === null) {
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throw new \RuntimeException('Invoice not found.');
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}
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$frozenTotals = $this->calculateFrozenLineTotals($invoiceId);
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if ($frozenTotals !== null) {
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$tuitionTotal = $this->fromCentsNumber($frozenTotals['tuition_cents']);
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$eventTotal = $this->fromCentsNumber($frozenTotals['event_cents']);
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$additionalTotal = $this->fromCentsNumber($frozenTotals['additional_cents']);
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$frozenTotalCents = $frozenTotals['total_cents'];
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} else {
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$tuitionTotal = $this->calculateTuitionTotal($invoice);
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$eventTotal = $this->calculateEventTotal($invoice);
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$additionalTotal = $this->calculateAdditionalCharges($invoiceId);
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$frozenTotalCents = null;
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}
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$discountRawTotal = $this->calculateDiscounts($invoiceId);
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$paidTotal = $this->calculateValidPayments($invoiceId);
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$refundPaidTotal = $this->calculatePaidRefunds($invoiceId);
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$tuitionCents = $this->toCents($tuitionTotal);
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$eventCents = $this->toCents($eventTotal);
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$additionalCents = $this->toCents($additionalTotal);
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$discountRawCents = $this->toCents($discountRawTotal);
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$paidCents = $this->toCents($paidTotal);
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$refundPaidCents = $this->toCents($refundPaidTotal);
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if ($frozenTotalCents !== null) {
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$totalAmountCents = $frozenTotalCents;
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$discountBaseCents = max(0, (int) ($frozenTotals['discount_eligible_base_cents'] ?? ($tuitionCents + $additionalCents)));
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$discountCents = $discountBaseCents > 0 ? min($discountRawCents, $discountBaseCents) : 0;
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} elseif ($this->isCarryForwardInvoice($invoice)) {
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$totalAmountCents = $this->toCents((float) ($invoice['total_amount'] ?? 0));
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$discountBaseCents = 0;
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$discountCents = 0;
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} else {
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$discountBaseCents = max(0, $tuitionCents + $additionalCents);
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$discountCents = min($discountRawCents, $discountBaseCents);
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$totalAmountCents = $tuitionCents + $eventCents + $additionalCents;
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}
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$rawBalanceCents = $totalAmountCents - $discountCents - $paidCents + $refundPaidCents;
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$balanceCents = max(0, $rawBalanceCents);
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if ($balanceCents === 0) {
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$status = FinancialStatus::INVOICE_PAID;
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} elseif ($paidCents > 0 || $discountCents > 0 || $refundPaidCents > 0) {
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$status = FinancialStatus::INVOICE_PARTIALLY_PAID;
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} else {
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$status = FinancialStatus::INVOICE_UNPAID;
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}
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return [
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'invoice_id' => $invoiceId,
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'gross_charge_cents' => $totalAmountCents,
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'discount_eligible_base_cents' => $discountBaseCents,
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'requested_discount_cents' => $discountRawCents,
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'applied_discount_cents' => $discountCents,
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'net_charge_cents' => $totalAmountCents - $discountCents,
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'totalAmountCents' => $totalAmountCents,
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'discountCents' => $discountCents,
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'paidCents' => $paidCents,
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'completedRefundCents' => $refundPaidCents,
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'rawBalanceCents' => $rawBalanceCents,
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'balanceDueCents' => $balanceCents,
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'customerCreditCents' => max(0, -$rawBalanceCents),
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'tuition_total' => $this->fromCents($tuitionCents),
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'event_total' => $this->fromCents($eventCents),
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'additional_total' => $this->fromCents($additionalCents),
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'discount_total' => $this->fromCents($discountCents),
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'discount_raw_total' => $this->fromCents($discountRawCents),
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'paid_amount' => $this->fromCents($paidCents),
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'refund_paid_total' => $this->fromCents($refundPaidCents),
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'total_amount' => $this->fromCents($totalAmountCents),
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'customer_credit' => $this->fromCents(max(0, -$rawBalanceCents)),
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'balance' => $this->fromCents($balanceCents),
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'status' => $status,
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'has_discount' => $discountCents > 0 ? 1 : 0,
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];
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}
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public function recalculateInvoice(int $invoiceId): array
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{
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$calculation = $this->calculateInvoice($invoiceId);
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$payload = [
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'total_amount' => $calculation['total_amount'],
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'paid_amount' => $calculation['paid_amount'],
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'balance' => $calculation['balance'],
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'status' => $calculation['status'],
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'has_discount' => $calculation['has_discount'],
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'updated_at' => utc_now(),
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];
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if ($this->invoiceModel->db->fieldExists('discount', $this->invoiceModel->table)) {
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$payload['discount'] = $calculation['discount_total'];
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}
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if (!$this->invoiceModel->update($invoiceId, $payload)) {
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throw new FinancialPersistenceException('INVOICE_LEDGER_UPDATE_FAILED', $this->invoiceModel->errors());
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}
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return $calculation;
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}
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public function recalculate(int $invoiceId): array
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{
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return $this->recalculateInvoice($invoiceId);
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}
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public function getValidPaymentTotalCents(int $invoiceId): int
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{
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return $this->toCents($this->calculateValidPayments($invoiceId));
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}
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public function issueInitialInvoiceLines(
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int $invoiceId,
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float $tuitionAmount,
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float $eventAmount,
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array $metadata = []
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): int {
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if ($invoiceId <= 0) {
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throw new \RuntimeException('Invoice ID is required to issue invoice lines.');
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}
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if (!$this->invoiceLinesAvailable()) {
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throw new \RuntimeException('Invoice lines table is not available.');
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}
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if ($this->invoiceHasLines($invoiceId)) {
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return 0;
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}
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$now = utc_now();
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$version = (string) ($metadata['calculation_version'] ?? $this->getCalculationVersion());
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$rows = [];
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$tuitionCents = $this->toCents($tuitionAmount);
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if ($tuitionCents !== 0) {
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$rows[] = $this->buildInvoiceLineRow(
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$invoiceId,
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'tuition',
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'tuition_calculation',
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null,
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'Tuition charges',
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$tuitionCents,
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1,
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$version,
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$metadata,
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$now
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);
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}
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$eventCents = $this->toCents($eventAmount);
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if ($eventCents !== 0) {
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$rows[] = $this->buildInvoiceLineRow(
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$invoiceId,
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'event_fee',
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'event_charges',
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null,
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'Event charges',
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$eventCents,
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0,
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$version,
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$metadata,
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$now
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);
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}
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foreach ($this->loadApprovedAdjustmentRowsForIssuance($invoiceId, $metadata) as $charge) {
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$adjustmentCents = (string)($charge['charge_type'] ?? 'add') === 'deduct'
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? -1 * $this->toCents(abs((float)($charge['amount'] ?? 0)))
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: $this->toCents(abs((float)($charge['amount'] ?? 0)));
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if ($adjustmentCents === 0) {
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throw new \RuntimeException('Zero amount approved additional charges cannot be issued.');
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}
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$row = $this->buildInvoiceLineRow(
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$invoiceId,
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$adjustmentCents > 0 ? 'additional_charge' : 'additional_deduction',
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'additional_charge',
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(int)$charge['id'],
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trim((string)($charge['title'] ?? 'Additional charge')) ?: 'Additional charge',
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$adjustmentCents,
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0,
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$version,
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$metadata + ['charge_type' => (string)($charge['charge_type'] ?? '')],
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$now
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);
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$row['active_source_key'] = 'additional_charge:' . (int)$charge['id'];
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$rows[] = $row;
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}
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if ($rows === []) {
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throw new \RuntimeException('Invoice issuance requires at least one non-zero invoice line.');
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}
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$inserted = 0;
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foreach ($rows as $row) {
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$lineId = $this->invoiceLineModel()->insert($row);
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if (!$lineId) {
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throw new FinancialPersistenceException('INVOICE_LINE_INSERT_FAILED', $this->invoiceLineModel()->errors());
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}
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$inserted++;
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if (($row['source_type'] ?? null) === 'additional_charge' && !empty($row['source_id'])) {
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$this->additionalChargeModel->update((int)$row['source_id'], [
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'invoice_id' => $invoiceId,
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'status' => FinancialStatus::ADDITIONAL_CHARGE_APPLIED,
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'applied_invoice_line_id' => (int)$lineId,
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'applied_at' => $now,
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]);
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}
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}
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return $inserted;
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}
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protected function loadApprovedAdjustmentRowsForIssuance(int $invoiceId, array $metadata): array
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{
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$parentId = (int)($metadata['parent_id'] ?? 0);
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$schoolYear = (string)($metadata['school_year'] ?? '');
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$semester = (string)($metadata['semester'] ?? '');
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if ($parentId <= 0 || $schoolYear === '' || $semester === '') {
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return [];
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}
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return $this->additionalChargeModel
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->where('parent_id', $parentId)
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->where('school_year', $schoolYear)
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->where('semester', $semester)
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->where('status', FinancialStatus::ADDITIONAL_CHARGE_APPROVED)
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->groupStart()
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->where('invoice_id', $invoiceId)
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->orWhere('invoice_id IS NULL', null, false)
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->groupEnd()
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->orderBy('id', 'ASC')
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->findAll();
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}
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protected function loadInvoice(int $invoiceId): ?array
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{
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return $this->invoiceModel->find($invoiceId);
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}
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protected function calculateFrozenLineTotals(int $invoiceId): ?array
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{
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if (!$this->invoiceLinesAvailable() || !$this->invoiceHasLines($invoiceId)) {
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return null;
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}
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$rows = $this->invoiceLineModel()
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->select('line_type, line_amount_cents, discount_eligible')
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->where('invoice_id', $invoiceId)
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->where('voided_at IS NULL', null, false)
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->findAll();
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$totals = [
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'tuition_cents' => 0,
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'event_cents' => 0,
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'additional_cents' => 0,
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'total_cents' => 0,
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'discount_eligible_base_cents' => 0,
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];
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foreach ($rows as $row) {
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$amount = (int) ($row['line_amount_cents'] ?? 0);
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$type = (string) ($row['line_type'] ?? '');
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$totals['total_cents'] += $amount;
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if ((int) ($row['discount_eligible'] ?? 0) === 1) {
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$totals['discount_eligible_base_cents'] += $amount;
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}
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if (str_contains($type, 'event')) {
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$totals['event_cents'] += $amount;
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} elseif (str_contains($type, 'additional') || str_contains($type, 'adjustment') || str_contains($type, 'charge')) {
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$totals['additional_cents'] += $amount;
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} else {
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$totals['tuition_cents'] += $amount;
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}
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}
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return $totals;
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}
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protected function invoiceHasLines(int $invoiceId): bool
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{
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if (!$this->invoiceLinesAvailable()) {
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return false;
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}
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return $this->invoiceLineModel()
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->where('invoice_id', $invoiceId)
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->where('voided_at IS NULL', null, false)
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->countAllResults() > 0;
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}
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protected function invoiceLinesAvailable(): bool
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{
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try {
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return $this->invoiceLineModel()->db->tableExists('invoice_lines');
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} catch (\Throwable $e) {
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return false;
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}
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}
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protected function invoiceLineModel(): InvoiceLineModel
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{
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if ($this->invoiceLineModel === null) {
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$this->invoiceLineModel = new InvoiceLineModel();
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}
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return $this->invoiceLineModel;
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}
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protected function buildInvoiceLineRow(
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int $invoiceId,
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string $lineType,
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?string $sourceType,
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?int $sourceId,
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string $description,
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int $amountCents,
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int $discountEligible,
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string $version,
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array $metadata,
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string $timestamp
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): array {
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return [
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'invoice_id' => $invoiceId,
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'school_year' => (string)($metadata['school_year'] ?? ''),
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'line_type' => $lineType,
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'source_type' => $sourceType,
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'source_id' => $sourceId,
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'active_source_key' => null,
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'description' => $description,
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'quantity' => '1.00',
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'unit_amount_cents' => $amountCents,
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'line_amount_cents' => $amountCents,
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'discount_eligible' => $discountEligible,
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'calculation_version' => $version,
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'metadata_json' => json_encode($metadata, JSON_UNESCAPED_SLASHES),
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'created_at' => $timestamp,
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'updated_at' => $timestamp,
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'voided_at' => null,
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];
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}
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protected function getCalculationVersion(): string
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{
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return 'invoice_lines_v1:' . get_class($this->resolveActiveCalculator());
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}
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protected function isCarryForwardInvoice(array $invoice): bool
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{
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$invoiceNumber = (string) ($invoice['invoice_number'] ?? '');
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if (str_starts_with($invoiceNumber, 'CF-')) {
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return true;
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}
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if (strcasecmp((string) ($invoice['semester'] ?? ''), 'Opening Balance') === 0) {
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return true;
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}
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$description = strtolower((string) ($invoice['description'] ?? ''));
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return str_contains($description, 'carried over')
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|| str_contains($description, 'carry-forward')
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|| str_contains($description, 'previous school year');
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}
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protected function calculateTuitionTotal(array $invoice): float
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{
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$parentId = (int) ($invoice['parent_id'] ?? 0);
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$schoolYear = (string) ($invoice['school_year'] ?? '');
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if ($parentId <= 0 || $schoolYear === '') {
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return 0.0;
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}
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$students = $this->loadTuitionStudents($parentId, $schoolYear);
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$config = $this->getTuitionConfig();
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$calculator = $this->resolveActiveCalculator();
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return (float) ($calculator->calculateFamilyTuition($students, $config)['total'] ?? 0.0);
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}
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protected function calculateEventTotal(array $invoice): float
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{
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$invoiceId = (int) ($invoice['id'] ?? 0);
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$invoiceEventRows = $this->invoiceEventModel
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->select('COALESCE(SUM(amount),0) AS total_amount')
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->where('invoice_id', $invoiceId)
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->findAll();
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if (!empty($invoiceEventRows)) {
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$total = (float) ($invoiceEventRows[0]['total_amount'] ?? 0);
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if ($total > 0) {
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return $total;
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}
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}
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$rows = $this->eventChargesModel
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->select('COALESCE(SUM(charged),0) AS total_amount')
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->where('parent_id', (int) ($invoice['parent_id'] ?? 0))
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->where('school_year', (string) ($invoice['school_year'] ?? ''))
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->where('semester', (string) ($invoice['semester'] ?? ''))
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->findAll();
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return (float) ($rows[0]['total_amount'] ?? 0);
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}
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protected function calculateAdditionalCharges(int $invoiceId): float
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{
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$rows = $this->additionalChargeModel
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->select("COALESCE(SUM(CASE WHEN charge_type = 'deduct' THEN -ABS(amount) ELSE ABS(amount) END),0) AS total_amount", false)
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->where('invoice_id', $invoiceId)
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->where('status', FinancialStatus::ADDITIONAL_CHARGE_APPLIED)
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->findAll();
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return (float) ($rows[0]['total_amount'] ?? 0);
|
|
}
|
|
|
|
protected function calculateDiscounts(int $invoiceId): float
|
|
{
|
|
if ($this->discountUsageModel->db->fieldExists('applied_discount_cents', $this->discountUsageModel->table)) {
|
|
$row = $this->discountUsageModel
|
|
->select('COALESCE(SUM(applied_discount_cents),0) AS total_cents')
|
|
->where('invoice_id', $invoiceId)
|
|
->first();
|
|
|
|
return ((int) ($row['total_cents'] ?? 0)) / 100;
|
|
}
|
|
|
|
$row = $this->discountUsageModel
|
|
->select('COALESCE(SUM(discount_amount),0) AS total_amount')
|
|
->where('invoice_id', $invoiceId)
|
|
->first();
|
|
|
|
return (float) ($row['total_amount'] ?? 0);
|
|
}
|
|
|
|
protected function calculateValidPayments(int $invoiceId): float
|
|
{
|
|
$query = $this->paymentModel
|
|
->select('COALESCE(SUM(paid_amount),0) AS total_amount')
|
|
->where('invoice_id', $invoiceId);
|
|
|
|
if ($this->paymentModel->db->fieldExists('status', $this->paymentModel->table)) {
|
|
$query->groupStart()
|
|
->whereIn('status', FinancialStatus::VALID_PAYMENT_STATUSES)
|
|
->orWhere('status IS NULL', null, false)
|
|
->groupEnd();
|
|
}
|
|
|
|
if ($this->paymentModel->db->fieldExists('is_void', $this->paymentModel->table)) {
|
|
$query->groupStart()
|
|
->where('is_void', 0)
|
|
->orWhere('is_void IS NULL', null, false)
|
|
->groupEnd();
|
|
}
|
|
|
|
$row = $query->first();
|
|
|
|
return (float) ($row['total_amount'] ?? 0);
|
|
}
|
|
|
|
protected function calculatePaidRefunds(int $invoiceId): float
|
|
{
|
|
if ($this->refundPayoutsAvailable()) {
|
|
$row = $this->refundPayoutModel()
|
|
->select("COALESCE(SUM(CASE
|
|
WHEN refund_payouts.payout_type = 'cash_out' AND refund_payouts.status = 'completed' THEN refund_payouts.amount_cents
|
|
WHEN refund_payouts.payout_type = 'reversal' AND refund_payouts.status = 'completed' THEN -refund_payouts.amount_cents
|
|
ELSE 0
|
|
END),0) AS total_cents", false)
|
|
->join('refunds', 'refunds.id = refund_payouts.refund_id', 'inner')
|
|
->where('refunds.invoice_id', $invoiceId)
|
|
->first();
|
|
|
|
return max(0, (float) ($row['total_cents'] ?? 0)) / 100;
|
|
}
|
|
|
|
$row = $this->refundModel
|
|
->select('COALESCE(SUM(refund_paid_amount),0) AS total_amount')
|
|
->where('invoice_id', $invoiceId)
|
|
->whereIn('status', FinancialStatus::REFUND_REDUCES_INVOICE_STATUSES)
|
|
->first();
|
|
|
|
return (float) ($row['total_amount'] ?? 0);
|
|
}
|
|
|
|
protected function refundPayoutsAvailable(): bool
|
|
{
|
|
try {
|
|
return $this->refundPayoutModel()->db->tableExists('refund_payouts');
|
|
} catch (\Throwable $e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
protected function refundPayoutModel(): RefundPayoutModel
|
|
{
|
|
if ($this->refundPayoutModel === null) {
|
|
$this->refundPayoutModel = new RefundPayoutModel();
|
|
}
|
|
|
|
return $this->refundPayoutModel;
|
|
}
|
|
|
|
protected function loadTuitionStudents(int $parentId, string $schoolYear): array
|
|
{
|
|
$enrollments = $this->enrollmentModel
|
|
->where('parent_id', $parentId)
|
|
->where('school_year', $schoolYear)
|
|
->findAll();
|
|
|
|
if (empty($enrollments)) {
|
|
return [];
|
|
}
|
|
|
|
$refundDeadline = (string) ($this->configurationModel->getConfig('refund_deadline') ?? '');
|
|
$includeWithdrawn = !$this->isWithinRefundWindow($refundDeadline);
|
|
$eligibleStatuses = ['enrolled', 'payment pending'];
|
|
|
|
if ($includeWithdrawn) {
|
|
array_push($eligibleStatuses, 'withdrawn', 'refund pending', 'withdraw under review');
|
|
}
|
|
|
|
$students = [];
|
|
foreach ($enrollments as $enrollment) {
|
|
$status = strtolower(trim((string) ($enrollment['enrollment_status'] ?? '')));
|
|
$studentId = (int) ($enrollment['student_id'] ?? 0);
|
|
if ($studentId <= 0 || !in_array($status, $eligibleStatuses, true)) {
|
|
continue;
|
|
}
|
|
|
|
if (!$this->studentClassModel->hasNonEventAssignment($studentId, $schoolYear)) {
|
|
continue;
|
|
}
|
|
|
|
$gradeName = $this->resolveGradeName($studentId, $schoolYear, $enrollment['class_section_id'] ?? null);
|
|
$student = $this->studentModel->find($studentId) ?? [];
|
|
|
|
$students[] = [
|
|
'student_id' => $studentId,
|
|
'student_name' => trim(((string) ($student['firstname'] ?? '')) . ' ' . ((string) ($student['lastname'] ?? ''))),
|
|
'grade_level' => $gradeName,
|
|
];
|
|
}
|
|
|
|
return $students;
|
|
}
|
|
|
|
protected function resolveGradeName(int $studentId, string $schoolYear, $classSectionId = null): string
|
|
{
|
|
$sectionId = $classSectionId;
|
|
if (empty($sectionId)) {
|
|
$row = $this->studentClassModel
|
|
->select('class_section_id')
|
|
->where('student_id', $studentId)
|
|
->where('school_year', $schoolYear)
|
|
->orderBy('updated_at', 'DESC')
|
|
->first();
|
|
$sectionId = $row['class_section_id'] ?? null;
|
|
}
|
|
|
|
if (empty($sectionId)) {
|
|
return 'N/A';
|
|
}
|
|
|
|
$name = $this->classSectionModel->getClassSectionNameBySectionId($sectionId);
|
|
|
|
return is_string($name) && $name !== '' ? strtoupper(trim($name)) : 'N/A';
|
|
}
|
|
|
|
protected function resolveActiveCalculator(): TuitionCalculatorInterface
|
|
{
|
|
$version = strtolower(trim((string) ($this->configurationModel->getConfig('tuition_calculator_version') ?? 'old')));
|
|
|
|
return $version === 'new' ? $this->newCalculator : $this->oldCalculator;
|
|
}
|
|
|
|
protected function getTuitionConfig(): array
|
|
{
|
|
return [
|
|
'grade_fee' => $this->configurationModel->getConfig('grade_fee'),
|
|
'first_student_fee' => $this->configurationModel->getConfig('first_student_fee'),
|
|
'second_student_fee' => $this->configurationModel->getConfig('second_student_fee'),
|
|
'youth_fee' => $this->configurationModel->getConfig('first_student_fee'),
|
|
'new_tuition_full_amount' => $this->configurationModel->getConfig('new_tuition_full_amount'),
|
|
'new_tuition_second_student_discount' => $this->configurationModel->getConfig('new_tuition_second_student_discount'),
|
|
];
|
|
}
|
|
|
|
protected function isWithinRefundWindow(string $refundDeadline): bool
|
|
{
|
|
if ($refundDeadline === '') {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$timeZone = new \DateTimeZone((string) (config('School')->attendance['timezone'] ?? user_timezone()));
|
|
$today = new \DateTimeImmutable('today', $timeZone);
|
|
$deadline = new \DateTimeImmutable($refundDeadline, $timeZone);
|
|
|
|
return $today <= $deadline;
|
|
} catch (\Throwable $e) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
protected function toCents($amount): int
|
|
{
|
|
return (int) round(((float) $amount) * 100);
|
|
}
|
|
|
|
protected function fromCents(int $cents): string
|
|
{
|
|
return number_format($cents / 100, 2, '.', '');
|
|
}
|
|
|
|
protected function fromCentsNumber(int $cents): float
|
|
{
|
|
return $cents / 100;
|
|
}
|
|
}
|