<?php
$content = file_get_contents('includes/app.php');

$content = str_replace(
    '\'notes\' => \'',
    '\'notes\' => \'',
        '\'subjects\' => [],
    $content
);

$old_loop = <<<'EOD'
    foreach ($data as $key => $_value) {
        $data[$key] = clean_text((string) ($input[$key] ?? ''), $key === 'notes' ? 1000 : 190);
    }
EOD;

$new_loop = <<<'EOD'
    foreach ($data as $key => $_value) {
        if ($key === 'subjects') {
            $data[$key] = is_array($input[$key] ?? []) ? $input[$key] : [];
            continue;
        }
        $data[$key] = clean_text((string) ($input[$key] ?? ''), $key === 'notes' ? 1000 : 190);
    }
EOD;
$content = str_replace($old_loop, $new_loop, $content);

$old_val = <<<'EOD'
    if ($startDate !== '' && $endDate !== '' && strtotime($endDate) < strtotime($startDate)) {
        $errors['end_date'] = 'يجب أن يكون تاريخ النهاية بعد البداية.';
    }
EOD;

$new_val = $old_val . <<<'EOD'

    if (empty($data['subjects'])) {
        $errors['subjects'] = 'يرجى اختيار مادة واحدة على الأقل.';
    } else {
        $data['subjects'] = array_map('intval', $data['subjects']);
    }
EOD;
$content = str_replace($old_val, $new_val, $content);

$old_insert_sql = <<<'EOD'
        'INSERT INTO center_applications (
            center_name, city, center_type, gender_scope, director_name, phone, email,
            expected_students, start_date, end_date, notes, status, submitted_at, updated_at
        ) VALUES (
            :center_name, :city, :center_type, :gender_scope, :director_name, :phone, :email,
            :expected_students, :start_date, :end_date, :notes, :status, NOW(), NOW()
        )'
EOD;

$new_insert_sql = <<<'EOD'
        'INSERT INTO center_applications (
            center_name, city, center_type, gender_scope, director_name, phone, email,
            expected_students, start_date, end_date, notes, subjects, status, submitted_at, updated_at
        ) VALUES (
            :center_name, :city, :center_type, :gender_scope, :director_name, :phone, :email,
            :expected_students, :start_date, :end_date, :notes, :subjects, :status, NOW(), NOW()
        )'
EOD;
$content = str_replace($old_insert_sql, $new_insert_sql, $content);

$old_execute = <<<'EOD'
        ':notes' => $data['notes'],
        ':status' => 'submitted',
    ]);
EOD;

$new_execute = <<<'EOD'
        ':notes' => $data['notes'],
        ':subjects' => json_encode($data['subjects']),
        ':status' => 'submitted',
    ]);
EOD;
$content = str_replace($old_execute, $new_execute, $content);

if (strpos($content, "function get_enabled_subjects") === false) {
    $content .= <<<'EOD'

function get_enabled_subjects(): array
{
    $pdo = db_connection();
    $stmt = $pdo->query("SELECT id, name, description FROM subjects WHERE status = 'enabled' ORDER BY name ASC");
    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
    return $result !== false ? $result : [];
}
EOD;
}

file_put_contents('includes/app.php', $content);
echo "Patch applied.";