<?php
declare(strict_types=1);
require __DIR__ . '/includes/bootstrap.php';

$user = require_user();
$slug = trim((string)($_GET['slug'] ?? ''));
$test = load_test_by_slug($slug);

if (!$test || empty($test['meta']['active'])) {
    set_flash('danger', 'Der gewünschte Test wurde nicht gefunden oder ist nicht aktiv.');
    redirect_to('dashboard.php');
}

$existing = load_submission($slug, $user['email']);
$oldAnswers = $_SESSION['old_answers'][$slug] ?? [];
unset($_SESSION['old_answers'][$slug]);

$prefill = $oldAnswers ?: ($existing['answers'] ?? []);

render_header((string)$test['meta']['title']);
?>
<div class="mb-4">
    <h1 class="h2 mb-2"><?= e((string)$test['meta']['title']) ?></h1>
    <p class="text-muted mb-0"><?= e((string)($test['meta']['description'] ?? '')) ?></p>
</div>

<form method="post" action="save_test.php">
    <input type="hidden" name="slug" value="<?= e($slug) ?>">

    <?php foreach ($test['questions'] as $index => $question): ?>
        <div class="card card-soft mb-4">
            <div class="card-body p-4">
                <div class="d-flex justify-content-between align-items-start mb-3">
                    <h2 class="h5 mb-0"><?= ($index + 1) ?>. <?= e((string)$question['text']) ?></h2>
                    <span class="badge text-bg-secondary"><?= e((string)$question['type']) ?></span>
                </div>

                <?php foreach ($question['options'] as $option): ?>
                    <?php
                    $questionId = (string)$question['id'];
                    $optionId = (string)$option['id'];
                    $inputId = $questionId . '_' . $optionId;
                    $type = (string)$question['type'] === 'multiple' ? 'checkbox' : 'radio';

                    $isChecked = false;
                    if ($type === 'checkbox') {
                        $saved = $prefill[$questionId] ?? [];
                        if (is_array($saved)) {
                            $isChecked = in_array($optionId, array_map('strval', $saved), true);
                        }
                    } else {
                        $isChecked = (($prefill[$questionId] ?? '') === $optionId);
                    }
                    ?>
                    <div class="form-check ps-0 mb-3">
                        <input
                            class="form-check-input d-none choice-input"
                            type="<?= e($type) ?>"
                            id="<?= e($inputId) ?>"
                            name="answers[<?= e($questionId) ?>]<?= $type === 'checkbox' ? '[]' : '' ?>"
                            value="<?= e($optionId) ?>"
                            <?= $isChecked ? 'checked' : '' ?>
                        >
                        <label class="option-label" for="<?= e($inputId) ?>">
                            <?= e((string)$option['text']) ?>
                        </label>
                    </div>
                <?php endforeach; ?>
            </div>
        </div>
    <?php endforeach; ?>

    <div class="d-flex gap-2">
        <a class="btn btn-outline-secondary btn-lg" href="dashboard.php">Zurück</a>
        <button type="submit" class="btn btn-primary btn-lg">Speichern und auswerten</button>
    </div>
</form>
<?php render_footer(); ?>