alrahma_sunday_school/app/Views/admin/certificates/index.php

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

<div class="container-fluid py-4">

    <div class="d-flex align-items-center justify-content-between flex-wrap gap-2 mb-3">
        <div>
            <h2 class="mb-0"><i class="bi bi-award me-2"></i>Generate Certificates</h2>
            <div class="text-muted small">Select a class, choose students, then generate and print their certificates.</div>
        </div>
    </div>

    <?php if (session()->getFlashdata('error')): ?>
        <div class="alert alert-danger alert-dismissible fade show" role="alert">
            <?= esc(session()->getFlashdata('error')) ?>
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
    <?php endif; ?>

    <!-- Filter form -->
    <div class="card shadow-sm mb-4">
        <div class="card-header fw-semibold">Filter Students</div>
        <div class="card-body">
            <form method="get" action="<?= site_url('administrator/certificates') ?>" id="filterForm">
                <div class="row g-3 align-items-end">
                    <div class="col-12 col-md-5">
                        <label class="form-label fw-semibold mb-1">Class / Section</label>
                        <select name="class_section_id" class="form-select" id="classSectionSelect">
                            <option value="">— Select a class —</option>
                            <?php foreach ($classSections as $cs): ?>
                                <option value="<?= esc($cs['class_section_id']) ?>"
                                    <?= ((string)$selectedClassId === (string)$cs['class_section_id']) ? 'selected' : '' ?>>
                                    <?= esc($cs['class_section_name']) ?>
                                </option>
                            <?php endforeach; ?>
                        </select>
                    </div>
                    <div class="col-12 col-md-3">
                        <label class="form-label fw-semibold mb-1">School Year</label>
                        <input type="text" name="school_year" class="form-control" value="<?= esc($schoolYear) ?>" placeholder="e.g. 2024-2025">
                    </div>
                    <div class="col-auto">
                        <button type="submit" class="btn btn-primary">
                            <i class="bi bi-funnel me-1"></i>Load Students
                        </button>
                    </div>
                </div>
            </form>
        </div>
    </div>

    <?php if (!empty($students)): ?>
    <!-- Certificate generation form -->
    <form method="post" action="<?= site_url('administrator/certificates/generate') ?>" id="certForm" target="_blank">
        <?= csrf_field() ?>
        <input type="hidden" name="class_section_id" value="<?= esc($selectedClassId) ?>">
        <input type="hidden" name="school_year"      value="<?= esc($schoolYear) ?>">

        <div class="card shadow-sm mb-3">
            <div class="card-header d-flex justify-content-between align-items-center flex-wrap gap-2">
                <span class="fw-semibold">
                    Students
                    <span class="badge bg-secondary ms-1"><?= count($students) ?></span>
                </span>
                <div class="d-flex align-items-center gap-3">
                    <div class="input-group input-group-sm" style="width:200px;">
                        <span class="input-group-text"><i class="bi bi-calendar3"></i></span>
                        <input type="date" class="form-control" id="certDatePicker"
                               value="<?= date('Y-m-d') ?>" title="Certificate date">
                        <input type="hidden" name="cert_date" id="certDateHidden" value="<?= esc($certDate) ?>">
                    </div>
                    <div class="form-check mb-0">
                        <input class="form-check-input" type="checkbox" id="selectAll">
                        <label class="form-check-label" for="selectAll">Select all</label>
                    </div>
                </div>
            </div>

            <div class="card-body p-0">
                <div class="table-responsive">
                    <table class="table table-hover table-striped align-middle mb-0 no-mgmt-sticky" id="studentsTable">
                        <thead class="table-light">
                            <tr>
                                <th style="width:40px;"></th>
                                <th>Last Name</th>
                                <th>First Name</th>
                                <th>Grade / Class</th>
                            </tr>
                        </thead>
                        <tbody>
                            <?php foreach ($students as $s): ?>
                            <tr>
                                <td class="text-center">
                                    <input class="form-check-input student-check" type="checkbox"
                                           name="student_ids[]" value="<?= (int) $s['id'] ?>">
                                </td>
                                <td><?= esc($s['lastname']) ?></td>
                                <td><?= esc($s['firstname']) ?></td>
                                <td><?= esc($s['grade'] ?? '') ?></td>
                            </tr>
                            <?php endforeach; ?>
                        </tbody>
                    </table>
                </div>
            </div>

            <div class="card-footer d-flex justify-content-between align-items-center">
                <span class="text-muted small" id="selectedCount">0 students selected</span>
                <button type="submit" class="btn btn-success" id="generateBtn" disabled>
                    <i class="bi bi-printer me-1"></i>Generate &amp; Print Certificates
                </button>
            </div>
        </div>
    </form>

    <?php elseif ($selectedClassId !== null && $selectedClassId !== ''): ?>
        <div class="alert alert-warning">No active students found for the selected class and school year.</div>
    <?php else: ?>
        <div class="alert alert-info">Select a class above to load its student roster.</div>
    <?php endif; ?>
</div>

<script>
(function () {
    // Sync date picker → hidden field (MM/DD/YYYY format for the certificate)
    const datePicker  = document.getElementById('certDatePicker');
    const dateHidden  = document.getElementById('certDateHidden');
    if (datePicker && dateHidden) {
        datePicker.addEventListener('change', function () {
            const d = new Date(this.value + 'T00:00:00');
            if (!isNaN(d)) {
                const mm = String(d.getMonth() + 1).padStart(2, '0');
                const dd = String(d.getDate()).padStart(2, '0');
                const yy = d.getFullYear();
                dateHidden.value = mm + '/' + dd + '/' + yy;
            }
        });
    }

    // Select-all toggle
    const selectAll    = document.getElementById('selectAll');
    const checks       = document.querySelectorAll('.student-check');
    const generateBtn  = document.getElementById('generateBtn');
    const selectedCount = document.getElementById('selectedCount');

    function updateState() {
        const chosen = document.querySelectorAll('.student-check:checked').length;
        selectedCount.textContent = chosen + ' student' + (chosen !== 1 ? 's' : '') + ' selected';
        generateBtn.disabled = chosen === 0;
        if (selectAll) {
            selectAll.checked       = chosen === checks.length && checks.length > 0;
            selectAll.indeterminate = chosen > 0 && chosen < checks.length;
        }
    }

    if (selectAll) {
        selectAll.addEventListener('change', function () {
            checks.forEach(c => { c.checked = this.checked; });
            updateState();
        });
    }

    checks.forEach(c => c.addEventListener('change', updateState));
    updateState();
})();
</script>

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