<?= $this->extend('layout/management_layout') ?>
<?= $this->section('content') ?>

<?php
    $source = $preview['source'] ?? [];
    $target = $preview['target'] ?? null;
    $overview = $preview['overview'] ?? [];
    $finance = $preview['finance'] ?? [];
    $promotion = $preview['promotion'] ?? ['summary' => [], 'rows' => []];
    $promotionSummary = $promotion['summary'] ?? [];
    $promotionRows = $promotion['rows'] ?? [];
    $promotionTotal = count($promotionRows);
    $blockers = $preview['blockers'] ?? [];
    $warnings = $preview['warnings'] ?? [];
    $carryForward = $preview['carry_forward'] ?? [];
    $inventory = $preview['inventory'] ?? ['rows' => [], 'summary' => []];
    $inventoryRows = $inventory['rows'] ?? [];
    $carryForwardTotal = array_reduce(
        $carryForward,
        static fn (float $total, array $row): float => $total + (float) ($row['carry_forward_amount'] ?? 0),
        0.0
    );
    $status = (string) ($source['status'] ?? '');
    $batchStatus = (string) ($latestBatch['status'] ?? '');
    $missingCarryForwardInvoices = (int) ($missingCarryForwardInvoices ?? 0);
    $money = static fn ($value): string => '$' . number_format((float) $value, 2);
    $score = static fn ($value): string => is_numeric($value) ? number_format((float) $value, 2) : '-';
    $sourceId = (int) ($source['id'] ?? 0);
    $targetId = (int) ($target['id'] ?? 0);
    $flowStep = 1;
    if ($status === 'closing' && $batchStatus === 'started') {
        $flowStep = 3;
    } elseif ($status === 'closing' && $batchStatus === 'executed') {
        $flowStep = 4;
    } elseif ($status === 'closed' || $batchStatus === 'completed') {
        $flowStep = 5;
    } elseif ($status === 'active') {
        $flowStep = $blockers === [] && $target ? 2 : 1;
    }
    $initialModalStep = $flowStep === 2 ? 1 : $flowStep;
    $flowSteps = [
        1 => [
            'title' => 'Review checklist',
            'description' => 'Confirm promotion decisions, blocking issues, warnings, and financial totals before the year is locked.',
        ],
        2 => [
            'title' => 'Start close',
            'description' => 'Lock the current year into end-year review and connect it to the selected next school year.',
        ],
        3 => [
            'title' => 'Carry forward',
            'description' => 'Create or update target-year balances from the family balances shown in this checklist.',
        ],
        4 => [
            'title' => 'Finish close',
            'description' => 'Mark the current school year closed and activate the next school year.',
        ],
        5 => [
            'title' => 'Closed',
            'description' => 'The end-year process is complete. The closed year remains available for reporting and audit review.',
        ],
    ];
    $ageBySchoolYearSecondSeptember = static function (array $row) use ($source): string {
        $dob = trim((string) ($row['dob'] ?? ''));
        $schoolYear = (string) ($source['name'] ?? '');
        if ($dob === '' || preg_match('/^\d{4}-(\d{4})$/', $schoolYear, $matches) !== 1) {
            return '';
        }

        try {
            $birthDate = new DateTimeImmutable($dob);
            $cutoff = new DateTimeImmutable($matches[1] . '-09-01');
        } catch (Throwable) {
            return '';
        }

        if ($birthDate > $cutoff) {
            return '';
        }

        return (string) $birthDate->diff($cutoff)->y;
    };
    $kgPlacementFallback = static function (array $row) use ($target): string {
        $classText = strtoupper(trim(
            (string) ($row['class_name'] ?? '') . ' '
            . (string) ($row['class_section_name'] ?? '')
        ));
        if (preg_match('/(^|[^A-Z0-9])KG([^A-Z0-9]|$)/', $classText) !== 1 && ! str_contains($classText, 'KINDERGARTEN')) {
            return '';
        }

        $dob = trim((string) ($row['dob'] ?? ''));
        if ($dob === '') {
            return '';
        }

        try {
            $targetName = (string) ($target['name'] ?? '');
            if (preg_match('/^(\d{4})-\d{4}$/', $targetName, $matches) === 1) {
                $cutoff = new DateTimeImmutable($matches[1] . '-09-01');
            } else {
                $today = new DateTimeImmutable('today');
                $cutoff = new DateTimeImmutable($today->format('Y') . '-09-01');
                if ($today > $cutoff) {
                    $cutoff = $cutoff->modify('+1 year');
                }
            }
            $birthDate = new DateTimeImmutable($dob);
        } catch (Throwable) {
            return '';
        }

        if ($birthDate > $cutoff) {
            return '';
        }

        return $birthDate->diff($cutoff)->y >= 6 ? '1' : 'KG';
    };
?>

<?php if (session()->getFlashdata('success')): ?>
    <div class="alert alert-success"><?= esc(session()->getFlashdata('success')) ?></div>
<?php elseif (session()->getFlashdata('error')): ?>
    <div class="alert alert-danger"><?= esc(session()->getFlashdata('error')) ?></div>
<?php endif; ?>

<div class="container-fluid py-3">
    <div class="d-flex flex-wrap justify-content-between align-items-center gap-2 mb-3">
        <div>
            <h2 class="mb-1">End-Year Checklist: <?= esc($source['name'] ?? '') ?></h2>
            <div class="text-muted">
                Status: <span class="fw-semibold"><?= esc(ucfirst($status)) ?></span>
                <?php if ($target): ?>
                    <span class="mx-2">Next year: <span class="fw-semibold"><?= esc($target['name'] ?? '') ?></span></span>
                <?php endif; ?>
                <span>Generated: <?= esc($preview['generated_at'] ?? '') ?></span>
            </div>
        </div>
        <div class="d-flex flex-wrap gap-2">
            <button class="btn btn-primary" type="button" data-bs-toggle="modal" data-bs-target="#closeSchoolYearFlowModal">
                Continue End-Year Flow
            </button>
            <a class="btn btn-outline-secondary" href="<?= site_url('administrator/school-years') ?>">Back to School Years</a>
        </div>
    </div>

    <form class="row g-2 align-items-end mb-4" method="get" action="<?= site_url('administrator/school-years/' . (int) ($source['id'] ?? 0) . '/closing/preview') ?>">
        <div class="col-md-4">
            <label class="form-label" for="target_school_year_id">Next school year</label>
            <select class="form-select" id="target_school_year_id" name="target_school_year_id">
                <option value="">Auto-select next draft year</option>
                <?php foreach (($schoolYears ?? []) as $year): ?>
                    <?php if ((int) ($year['id'] ?? 0) !== (int) ($source['id'] ?? 0)): ?>
                        <option value="<?= (int) $year['id'] ?>" <?= $target && (int) $target['id'] === (int) $year['id'] ? 'selected' : '' ?>>
                            <?= esc($year['name'] ?? '') ?> (<?= esc($year['status'] ?? '') ?>)
                        </option>
                    <?php endif; ?>
                <?php endforeach; ?>
            </select>
        </div>
        <div class="col-md-3">
            <button class="btn btn-primary" type="submit">Refresh Checklist</button>
        </div>
    </form>

    <div class="row g-3 mb-4">
        <div class="col-md-3">
            <div class="border rounded bg-white p-3 h-100">
                <div class="text-muted small">Students</div>
                <div class="fs-5 fw-semibold"><?= esc((string) ($overview['students'] ?? 0)) ?></div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="border rounded bg-white p-3 h-100">
                <div class="text-muted small">Families</div>
                <div class="fs-5 fw-semibold"><?= esc((string) ($overview['families'] ?? 0)) ?></div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="border rounded bg-white p-3 h-100">
                <div class="text-muted small">Invoices</div>
                <div class="fs-5 fw-semibold"><?= esc((string) ($overview['invoices'] ?? 0)) ?></div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="border rounded bg-white p-3 h-100">
                <div class="text-muted small">Outstanding</div>
                <div class="fs-5 fw-semibold"><?= esc($money($overview['total_outstanding'] ?? 0)) ?></div>
            </div>
        </div>
    </div>

    <div class="row g-3 mb-4">
        <div class="col-lg-6">
            <div class="border rounded bg-white p-3 h-100">
                <h5>Blocking Issues</h5>
                <?php if ($blockers === []): ?>
                    <p class="text-muted mb-0">No blocking issues found.</p>
                <?php else: ?>
                    <ul class="mb-0">
                        <?php foreach ($blockers as $finding): ?>
                            <li><strong><?= esc($finding['title']) ?>:</strong> <?= esc($finding['detail']) ?></li>
                        <?php endforeach; ?>
                    </ul>
                <?php endif; ?>
            </div>
        </div>
        <div class="col-lg-6">
            <div class="border rounded bg-white p-3 h-100">
                <h5>Warnings</h5>
                <?php if ($warnings === []): ?>
                    <p class="text-muted mb-0">No warnings found.</p>
                <?php else: ?>
                    <ul class="mb-0">
                        <?php foreach ($warnings as $finding): ?>
                            <li><strong><?= esc($finding['title']) ?>:</strong> <?= esc($finding['detail']) ?></li>
                        <?php endforeach; ?>
                    </ul>
                <?php endif; ?>
            </div>
        </div>
    </div>

    <div class="row g-3 mb-4">
        <div class="col-lg-5">
            <div class="border rounded bg-white p-3 h-100">
                <h5>Finance Summary</h5>
                <dl class="row mb-0">
                    <dt class="col-7">Total invoiced</dt>
                    <dd class="col-5 text-end"><?= esc($money($finance['total_invoiced'] ?? 0)) ?></dd>
                    <dt class="col-7">Total paid</dt>
                    <dd class="col-5 text-end"><?= esc($money($finance['total_paid'] ?? 0)) ?></dd>
                    <dt class="col-7">Positive balances</dt>
                    <dd class="col-5 text-end"><?= esc($money($finance['positive_balance'] ?? 0)) ?></dd>
                    <dt class="col-7">Credits</dt>
                    <dd class="col-5 text-end"><?= esc($money($finance['credit_balance'] ?? 0)) ?></dd>
                </dl>
            </div>
        </div>
        <div class="col-lg-7">
            <div class="border rounded bg-white p-3 h-100">
                <h5>End-Year Progress</h5>
                <ol class="mb-0">
                    <li>Checklist generated</li>
                    <li class="<?= $blockers === [] ? '' : 'text-muted' ?>">Validation <?= $blockers === [] ? 'passed' : 'has blockers' ?></li>
                    <li class="<?= $batchStatus !== '' ? '' : 'text-muted' ?>">End-year process <?= $batchStatus !== '' ? esc($batchStatus) : 'not started' ?></li>
                    <li class="<?= in_array($batchStatus, ['executed', 'completed'], true) ? '' : 'text-muted' ?>">Carry-forward completed</li>
                    <li class="<?= $status === 'closed' ? '' : 'text-muted' ?>">Year closed</li>
                </ol>
            </div>
        </div>
    </div>

    <div class="border rounded bg-white p-3 mb-4" id="promotion-table">
        <div class="d-flex flex-wrap justify-content-between align-items-center gap-2 mb-3">
            <div>
                <h5 class="mb-1">Student Promotion Preview</h5>
                <div class="text-muted small">Promotion decisions must be generated and resolved before this school year can end.</div>
            </div>
            <a class="btn btn-outline-primary btn-sm" href="<?= site_url('grading/below-60/decisions') ?>">
                Manage Promotion Decisions
            </a>
        </div>

        <div class="row g-3 mb-3">
            <div class="col-lg-2 col-md-3 col-6">
                <div class="border rounded p-2 h-100">
                    <div class="text-muted small">Students</div>
                    <div class="fw-semibold"><?= esc((string) ($promotionSummary['total_students'] ?? 0)) ?></div>
                </div>
            </div>
            <div class="col-lg-2 col-md-3 col-6">
                <div class="border rounded p-2 h-100">
                    <div class="text-muted small">Decided</div>
                    <div class="fw-semibold"><?= esc((string) ($promotionSummary['with_decision'] ?? 0)) ?></div>
                </div>
            </div>
            <div class="col-lg-2 col-md-3 col-6">
                <div class="border rounded p-2 h-100">
                    <div class="text-muted small">Pass</div>
                    <div class="fw-semibold"><?= esc((string) ($promotionSummary['pass'] ?? 0)) ?></div>
                </div>
            </div>
            <div class="col-lg-2 col-md-3 col-6">
                <div class="border rounded p-2 h-100">
                    <div class="text-muted small">Pending</div>
                    <div class="fw-semibold text-danger"><?= esc((string) ($promotionSummary['pending_decision'] ?? 0)) ?></div>
                </div>
            </div>
            <div class="col-lg-2 col-md-3 col-6">
                <div class="border rounded p-2 h-100">
                    <div class="text-muted small">Other</div>
                    <div class="fw-semibold"><?= esc((string) ($promotionSummary['other_decision'] ?? 0)) ?></div>
                </div>
            </div>
        </div>

        <div class="table-responsive">
            <table id="promotionPreviewTable" class="table table-sm align-middle no-mgmt-sticky" data-no-mgmt-sticky>
                <thead>
                    <tr>
                        <th>Student</th>
                        <th>School ID</th>
                        <th>Class</th>
                        <th class="text-end">Age Sep 1</th>
                        <th class="text-end">Year Score</th>
                        <th>Decision</th>
                        <th>Source</th>
                        <th>Next Year Placement</th>
                        <th>Status</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach ($promotionRows as $row): ?>
                        <?php
                            $rowStatus = (string) ($row['status'] ?? 'missing');
                            $statusClass = $rowStatus === 'decided' ? 'success' : 'danger';
                            $sourceLabel = (string) ($row['source'] ?? '');
                            if ($sourceLabel === 'automatic_kg_age') {
                                $sourceLabel = 'Auto KG age';
                            }
                            $targetLabel = trim((string) ($row['target_section'] ?? ''));
                            if ($targetLabel === '') {
                                $targetLabel = trim((string) ($row['target_class'] ?? ''));
                            }
                            if ($targetLabel === '') {
                                $targetLabel = $kgPlacementFallback($row);
                            }
                            $ageSepOne = $ageBySchoolYearSecondSeptember($row);
                        ?>
                        <tr>
                            <td><?= esc($row['student_name'] ?? ('Student #' . (int) ($row['student_id'] ?? 0))) ?></td>
                            <td><?= esc($row['school_id'] ?? '') ?></td>
                            <td><?= esc($row['class_section_name'] ?? '') ?></td>
                            <td class="text-end" data-order="<?= esc($ageSepOne, 'attr') ?>"><?= esc($ageSepOne !== '' ? $ageSepOne : '-') ?></td>
                            <td class="text-end" data-order="<?= esc(is_numeric($row['year_score'] ?? null) ? (string) $row['year_score'] : '', 'attr') ?>"><?= esc($score($row['year_score'] ?? null)) ?></td>
                            <td><?= esc(($row['decision'] ?? '') !== '' ? $row['decision'] : '-') ?></td>
                            <td><?= esc($sourceLabel) ?></td>
                            <td data-order="<?= esc($targetLabel, 'attr') ?>"><?= esc($targetLabel !== '' ? $targetLabel : '-') ?></td>
                            <td data-order="<?= esc($rowStatus, 'attr') ?>"><span class="badge bg-<?= esc($statusClass) ?>"><?= esc(ucfirst($rowStatus)) ?></span></td>
                        </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    </div>

    <div class="border rounded bg-white p-3 mb-4" id="carry-forward-table">
        <h5>Book Inventory Reconciliation</h5>
        <div class="table-responsive mb-4">
            <table class="table table-sm align-middle no-mgmt-sticky" data-no-mgmt-sticky>
                <thead>
                    <tr>
                        <th>Book</th>
                        <th class="text-end">Opening</th>
                        <th class="text-end">Net Movements</th>
                        <th class="text-end">System Closing</th>
                        <th class="text-end">Physical Count</th>
                        <th class="text-end">Variance</th>
                        <th class="text-end">Charge Price</th>
                        <th class="text-end">Target Opening</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach ($inventoryRows as $row): ?>
                        <tr>
                            <td>
                                <div><?= esc($row['item_name'] ?? '') ?></div>
                                <div class="text-muted small"><?= esc(trim((string)($row['isbn'] ?? '') . ' ' . (string)($row['edition'] ?? ''))) ?></div>
                            </td>
                            <td class="text-end"><?= (int) ($row['opening_quantity'] ?? 0) ?></td>
                            <td class="text-end"><?= (int) ($row['movement_total'] ?? 0) ?></td>
                            <td class="text-end"><?= (int) ($row['system_closing_quantity'] ?? 0) ?></td>
                            <td class="text-end"><?= ($row['counted_closing_quantity'] ?? null) === null ? 'Missing' : (int) $row['counted_closing_quantity'] ?></td>
                            <td class="text-end"><?= ($row['variance_quantity'] ?? null) === null ? '-' : (int) $row['variance_quantity'] ?></td>
                            <td class="text-end">$<?= number_format(((int) ($row['charge_price_cents'] ?? 0)) / 100, 2) ?></td>
                            <td class="text-end"><?= (int) ($row['target_opening_quantity'] ?? 0) ?></td>
                        </tr>
                    <?php endforeach; ?>
                    <?php if ($inventoryRows === []): ?>
                        <tr><td colspan="8" class="text-muted">No book inventory item-year rows found for this source year.</td></tr>
                    <?php endif; ?>
                </tbody>
            </table>
        </div>

        <h5>Carry-Forward Families</h5>
        <div class="table-responsive">
            <table id="carryForwardFamiliesTable" class="table table-sm align-middle no-mgmt-sticky" data-no-mgmt-sticky>
                <thead>
                    <tr>
                        <th>Family</th>
                        <th>Parent</th>
                        <th class="text-end">Source Balance</th>
                        <th class="text-end">Credits</th>
                        <th class="text-end">Adjustments</th>
                        <th class="text-end">Net Carry-Forward</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach ($carryForward as $row): ?>
                        <tr>
                            <td><?= esc($row['family']) ?></td>
                            <td>
                                <div><?= esc($row['parent'] ?? ('Parent #' . (int) ($row['family_id'] ?? 0))) ?></div>
                                <?php if (! empty($row['parent_email'])): ?>
                                    <div class="text-muted small"><?= esc($row['parent_email']) ?></div>
                                <?php endif; ?>
                            </td>
                            <td class="text-end" data-order="<?= esc((string) (float) ($row['source_balance'] ?? 0), 'attr') ?>"><?= esc($money($row['source_balance'])) ?></td>
                            <td class="text-end" data-order="<?= esc((string) (float) ($row['credit_amount'] ?? 0), 'attr') ?>"><?= esc($money($row['credit_amount'])) ?></td>
                            <td class="text-end" data-order="<?= esc((string) (float) ($row['adjustment_amount'] ?? 0), 'attr') ?>"><?= esc($money($row['adjustment_amount'])) ?></td>
                            <td class="text-end" data-order="<?= esc((string) (float) ($row['carry_forward_amount'] ?? 0), 'attr') ?>"><?= esc($money($row['carry_forward_amount'])) ?></td>
                        </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    </div>

</div>

<div
    class="modal fade"
    id="closeSchoolYearFlowModal"
    tabindex="-1"
    aria-labelledby="closeSchoolYearFlowModalLabel"
    aria-hidden="true"
    data-initial-step="<?= esc((string) $initialModalStep, 'attr') ?>"
    data-max-step="<?= esc((string) $flowStep, 'attr') ?>"
>
    <div class="modal-dialog modal-xl modal-dialog-scrollable">
        <div class="modal-content">
            <div class="modal-header">
                <div>
                    <h5 class="modal-title" id="closeSchoolYearFlowModalLabel">Close <?= esc($source['name'] ?? '') ?></h5>
                    <div class="text-muted small">
                        <?php if ($target): ?>
                            Next school year: <span class="fw-semibold"><?= esc($target['name'] ?? '') ?></span>
                        <?php else: ?>
                            Select or create a next school year before closing can start.
                        <?php endif; ?>
                    </div>
                </div>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body">
                <div class="row g-3 mb-4">
                    <?php foreach ($flowSteps as $stepNumber => $step): ?>
                        <?php
                            $stepClass = $stepNumber < $flowStep
                                ? 'border-success bg-light'
                                : ($stepNumber === $flowStep ? 'border-primary' : 'border-light bg-light');
                            $badgeClass = $stepNumber < $flowStep
                                ? 'bg-success'
                                : ($stepNumber === $flowStep ? 'bg-primary' : 'bg-secondary');
                        ?>
                        <div class="col-lg col-md-4 col-sm-6">
                            <div class="border rounded p-3 h-100 <?= esc($stepClass) ?>" data-step-indicator="<?= esc((string) $stepNumber, 'attr') ?>">
                                <span class="badge <?= esc($badgeClass) ?> mb-2"><?= esc((string) $stepNumber) ?></span>
                                <div class="fw-semibold"><?= esc($step['title']) ?></div>
                                <div class="text-muted small"><?= esc($step['description']) ?></div>
                            </div>
                        </div>
                    <?php endforeach; ?>
                </div>

                <div class="close-school-year-step" data-step-pane="1">
                    <h6 class="mb-3">Review checklist details</h6>
                    <div class="row g-3 mb-4">
                        <div class="col-md-3">
                            <div class="border rounded p-3 h-100">
                                <div class="text-muted small">Students reviewed</div>
                                <div class="fs-5 fw-semibold"><?= esc((string) ($overview['students'] ?? 0)) ?></div>
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="border rounded p-3 h-100">
                                <div class="text-muted small">Pending decisions</div>
                                <div class="fs-5 fw-semibold <?= (int) ($promotionSummary['pending_decision'] ?? 0) > 0 ? 'text-danger' : '' ?>">
                                    <?= esc((string) ($promotionSummary['pending_decision'] ?? 0)) ?>
                                </div>
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="border rounded p-3 h-100">
                                <div class="text-muted small">Blocking issues</div>
                                <div class="fs-5 fw-semibold <?= $blockers === [] ? 'text-success' : 'text-danger' ?>"><?= esc((string) count($blockers)) ?></div>
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="border rounded p-3 h-100">
                                <div class="text-muted small">Net carry-forward</div>
                                <div class="fs-5 fw-semibold"><?= esc($money($carryForwardTotal)) ?></div>
                            </div>
                        </div>
                    </div>

                    <?php if ($blockers !== []): ?>
                        <div class="alert alert-danger">
                            <div class="fw-semibold mb-2">Resolve these blockers before the year can be closed.</div>
                            <ul class="mb-0">
                                <?php foreach ($blockers as $finding): ?>
                                    <li><strong><?= esc($finding['title']) ?>:</strong> <?= esc($finding['detail']) ?></li>
                                <?php endforeach; ?>
                            </ul>
                        </div>
                    <?php elseif (! $target && $status === 'active'): ?>
                        <div class="alert alert-warning mb-0">
                            A next school year is required. Use the selector on this page to choose a target year, then refresh the checklist.
                        </div>
                    <?php else: ?>
                        <div class="alert alert-success mb-0">
                            Checklist review is ready. Continue to the next step to start closing this school year.
                        </div>
                    <?php endif; ?>

                    <?php if ($warnings !== []): ?>
                        <div class="border rounded p-3 mt-3">
                            <div class="fw-semibold mb-2">Warnings to review</div>
                            <ul class="mb-0">
                                <?php foreach ($warnings as $finding): ?>
                                    <li><strong><?= esc($finding['title']) ?>:</strong> <?= esc($finding['detail']) ?></li>
                                <?php endforeach; ?>
                            </ul>
                        </div>
                    <?php endif; ?>
                </div>

                <div class="close-school-year-step d-none" data-step-pane="2">
                    <h6 class="mb-3">Start the close</h6>
                    <div class="alert alert-warning mb-3">
                        Starting the close locks <?= esc($source['name'] ?? 'this school year') ?> into end-year review. Normal edits for this year stop while carry-forward is prepared.
                    </div>
                    <dl class="row mb-0">
                        <dt class="col-sm-4">Current school year</dt>
                        <dd class="col-sm-8"><?= esc($source['name'] ?? '') ?></dd>
                        <dt class="col-sm-4">Next school year</dt>
                        <dd class="col-sm-8"><?= esc($target['name'] ?? 'Not selected') ?></dd>
                        <dt class="col-sm-4">Blocking issues</dt>
                        <dd class="col-sm-8"><?= esc((string) count($blockers)) ?></dd>
                    </dl>
                </div>

                <div class="close-school-year-step d-none" data-step-pane="3">
                    <h6 class="mb-3">Confirm carry-forward</h6>
                    <div class="alert alert-primary mb-3">
                        Carry-forward will create or update next-year invoices from the balances shown in the Carry-Forward Families table.
                    </div>
                    <div class="row g-3">
                        <div class="col-md-6">
                            <div class="border rounded p-3 h-100">
                                <div class="text-muted small">Families with carry-forward rows</div>
                                <div class="fs-5 fw-semibold"><?= esc((string) count($carryForward)) ?></div>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="border rounded p-3 h-100">
                                <div class="text-muted small">Net carry-forward</div>
                                <div class="fs-5 fw-semibold"><?= esc($money($carryForwardTotal)) ?></div>
                            </div>
                        </div>
                    </div>
                </div>

                <div class="close-school-year-step d-none" data-step-pane="4">
                    <h6 class="mb-3">Finish the close</h6>
                    <div class="alert alert-success mb-0">
                        Carry-forward is complete. Finishing the close will mark <?= esc($source['name'] ?? 'this school year') ?> closed and activate <?= esc($target['name'] ?? 'the next school year') ?>.
                    </div>
                </div>

                <div class="close-school-year-step d-none" data-step-pane="5">
                    <h6 class="mb-3">Closed</h6>
                    <div class="alert alert-secondary mb-0">
                        This close flow is complete. Use the report tables on this page for audit review.
                    </div>
                </div>
            </div>
            <div class="modal-footer justify-content-between">
                <div>
                    <?php if ($status === 'closing' && ! in_array($batchStatus, ['executed', 'completed'], true)): ?>
                        <form action="<?= site_url('administrator/school-years/' . $sourceId . '/closing/cancel') ?>" method="post" data-action-step="3">
                            <?= csrf_field() ?>
                            <button class="btn btn-outline-secondary" type="submit">Cancel End-Year Process</button>
                        </form>
                    <?php endif; ?>
                </div>
                <div class="d-flex flex-wrap gap-2">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Review Page</button>
                    <button type="button" class="btn btn-outline-primary" data-step-back>Back</button>
                    <button type="button" class="btn btn-primary" data-step-next>Next</button>

                    <?php if ($status === 'active' && $target && $blockers === []): ?>
                        <form action="<?= site_url('administrator/school-years/' . $sourceId . '/closing/start') ?>" method="post" data-action-step="2">
                            <?= csrf_field() ?>
                            <input type="hidden" name="target_school_year_id" value="<?= $targetId ?>">
                            <button class="btn btn-warning" type="submit">Next</button>
                        </form>
                    <?php elseif ($status === 'active'): ?>
                        <button class="btn btn-warning" type="button" disabled data-action-step="1">Next</button>
                    <?php endif; ?>

                    <?php if ($status === 'closing' && $batchStatus === 'started'): ?>
                        <form action="<?= site_url('administrator/school-years/' . $sourceId . '/closing/execute') ?>" method="post" data-action-step="3">
                            <?= csrf_field() ?>
                            <button class="btn btn-primary" type="submit">Next</button>
                        </form>
                    <?php endif; ?>

                    <?php if ($status === 'closing' && $batchStatus === 'executed'): ?>
                        <form action="<?= site_url('administrator/school-years/' . $sourceId . '/closing/complete') ?>" method="post" data-action-step="4">
                            <?= csrf_field() ?>
                            <button class="btn btn-success" type="submit">Finish Close</button>
                        </form>
                    <?php endif; ?>

                    <?php if ($status === 'closed' || $batchStatus === 'completed'): ?>
                        <a class="btn btn-success" href="<?= site_url('administrator/school-years') ?>" data-action-step="5">Finish</a>
                    <?php elseif ($batchStatus === 'executed'): ?>
                        <form action="<?= site_url('administrator/school-years/' . $sourceId . '/closing/execute') ?>" method="post" data-action-step="4">
                            <?= csrf_field() ?>
                            <button class="btn btn-outline-primary" type="submit">
                                <?= $missingCarryForwardInvoices > 0
                                    ? 'Repair Carry-Forward Invoices (' . $missingCarryForwardInvoices . ')'
                                    : 'Re-run Carry-Forward Sync' ?>
                            </button>
                        </form>
                    <?php endif; ?>
                </div>
            </div>
        </div>
    </div>
</div>

<?= $this->endSection() ?>

<?= $this->section('scripts') ?>
<script>
document.addEventListener('DOMContentLoaded', function () {
    var closeFlowModal = document.getElementById('closeSchoolYearFlowModal');
    var setupCloseFlowModal = function () {
        if (!closeFlowModal) {
            return;
        }

        var currentStep = parseInt(closeFlowModal.getAttribute('data-initial-step') || '1', 10);
        var maxStep = parseInt(closeFlowModal.getAttribute('data-max-step') || '1', 10);
        var backButton = closeFlowModal.querySelector('[data-step-back]');
        var nextButton = closeFlowModal.querySelector('[data-step-next]');
        var panes = Array.prototype.slice.call(closeFlowModal.querySelectorAll('[data-step-pane]'));
        var indicators = Array.prototype.slice.call(closeFlowModal.querySelectorAll('[data-step-indicator]'));
        var actions = Array.prototype.slice.call(closeFlowModal.querySelectorAll('[data-action-step]'));
        var actionForms = actions.filter(function (action) {
            return action.tagName && action.tagName.toLowerCase() === 'form';
        });

        var showStep = function (step) {
            currentStep = Math.max(1, Math.min(maxStep, step));

            panes.forEach(function (pane) {
                pane.classList.toggle('d-none', parseInt(pane.getAttribute('data-step-pane') || '0', 10) !== currentStep);
            });

            indicators.forEach(function (indicator) {
                var indicatorStep = parseInt(indicator.getAttribute('data-step-indicator') || '0', 10);
                var badge = indicator.querySelector('.badge');
                indicator.classList.remove('border-success', 'border-primary', 'border-light', 'bg-light');
                if (badge) {
                    badge.classList.remove('bg-success', 'bg-primary', 'bg-secondary');
                }

                if (indicatorStep < currentStep) {
                    indicator.classList.add('border-success', 'bg-light');
                    if (badge) badge.classList.add('bg-success');
                } else if (indicatorStep === currentStep) {
                    indicator.classList.add('border-primary');
                    if (badge) badge.classList.add('bg-primary');
                } else {
                    indicator.classList.add('border-light', 'bg-light');
                    if (badge) badge.classList.add('bg-secondary');
                }
            });

            actions.forEach(function (action) {
                action.classList.toggle('d-none', parseInt(action.getAttribute('data-action-step') || '0', 10) !== currentStep);
            });

            if (backButton) {
                backButton.classList.toggle('d-none', currentStep <= 1);
            }
            if (nextButton) {
                nextButton.classList.toggle('d-none', currentStep >= maxStep);
            }
        };

        if (backButton) {
            backButton.addEventListener('click', function () {
                showStep(currentStep - 1);
            });
        }
        if (nextButton) {
            nextButton.addEventListener('click', function () {
                showStep(currentStep + 1);
            });
        }

        actionForms.forEach(function (form) {
            form.addEventListener('submit', function (event) {
                var submitButton = form.querySelector('button[type="submit"]');
                event.preventDefault();

                if (submitButton) {
                    submitButton.disabled = true;
                }

                fetch(form.action, {
                    method: form.method || 'POST',
                    body: new FormData(form),
                    credentials: 'same-origin',
                    headers: {
                        'X-Requested-With': 'XMLHttpRequest'
                    }
                })
                    .then(function (response) {
                        return response.text();
                    })
                    .then(function (html) {
                        var parsed = new DOMParser().parseFromString(html, 'text/html');
                        var updatedModal = parsed.getElementById('closeSchoolYearFlowModal');

                        if (!updatedModal) {
                            window.location.reload();
                            return;
                        }

                        closeFlowModal.setAttribute('data-initial-step', updatedModal.getAttribute('data-initial-step') || '1');
                        closeFlowModal.setAttribute('data-max-step', updatedModal.getAttribute('data-max-step') || '1');
                        closeFlowModal.querySelector('.modal-content').innerHTML = updatedModal.querySelector('.modal-content').innerHTML;
                        setupCloseFlowModal();
                    })
                    .catch(function () {
                        form.submit();
                    })
                    .finally(function () {
                        if (submitButton) {
                            submitButton.disabled = false;
                        }
                    });
            });
        });

        showStep(currentStep);
    };

    if (closeFlowModal) {
        setupCloseFlowModal();
        if (new URLSearchParams(window.location.search).get('close_flow') === '1' && window.bootstrap && window.bootstrap.Modal) {
            window.bootstrap.Modal.getOrCreateInstance(closeFlowModal).show();
        }
    }

    if (!window.jQuery || !window.jQuery.fn || !window.jQuery.fn.DataTable) {
        return;
    }

    try {
        Object.keys(window.localStorage || {}).forEach(function (key) {
            if (key.indexOf('DataTables_promotionPreviewTable_') === 0 || key.indexOf('DataTables_carryForwardFamiliesTable_') === 0) {
                window.localStorage.removeItem(key);
            }
        });
    } catch (error) {
        // Ignore storage restrictions; DataTables can still initialize without saved state.
    }

    var baseOptions = {
        paging: true,
        pageLength: 25,
        lengthMenu: [[25, 50, 100, 200, -1], [25, 50, 100, 200, 'All']],
        pagingType: 'full_numbers',
        stateSave: false,
        autoWidth: false,
        dom: "<'row mb-2'<'col-sm-12 col-md-6'l><'col-sm-12 col-md-6'f>>" +
            "t" +
            "<'row mt-2'<'col-sm-12 col-md-5'i><'col-sm-12 col-md-7'p>>",
        language: {
            lengthMenu: 'Show _MENU_ entries',
            paginate: {
                first: 'First',
                previous: 'Previous',
                next: 'Next',
                last: 'Last'
            }
        }
    };

    window.jQuery('#promotionPreviewTable').DataTable(Object.assign({}, baseOptions, {
        order: [[2, 'asc'], [0, 'asc']],
        language: {
            lengthMenu: 'Show _MENU_ entries',
            emptyTable: 'No active class assignments found for this school year.'
        }
    }));

    window.jQuery('#carryForwardFamiliesTable').DataTable(Object.assign({}, baseOptions, {
        order: [[0, 'asc']],
        language: {
            lengthMenu: 'Show _MENU_ entries',
            emptyTable: 'No carry-forward balances found.'
        }
    }));
});
</script>
<?= $this->endSection() ?>