(function () {
    function isSurveyListPage() {
        var params = new URLSearchParams(window.location.search);

        return params.get('do') === 'survey_bundle_surveys';
    }

    function isSurveyQuestionListPage() {
        var params = new URLSearchParams(window.location.search);

        return params.get('do') === 'survey_bundle_surveys' && params.get('table') === 'tl_survey_content' && !params.get('act');
    }

    function toggleQuestionListClass() {
        document.body.classList.toggle('survey-question-list-page', isSurveyQuestionListPage());
        document.body.classList.toggle('survey-question-list-clipboard-active', isSurveyQuestionListPage() && hasQuestionListClipboardState());
    }

    function hasQuestionListClipboardState() {
        if (!isSurveyQuestionListPage()) {
            return false;
        }

        if (document.querySelector('#paste_hint')) {
            return true;
        }

        return Array.from(document.querySelectorAll('button')).some(function (button) {
            return (button.textContent || '').trim() === 'Ablage leeren';
        });
    }

    function getSearchSelect() {
        return document.querySelector('select[name="tl_search"]');
    }

    function getSearchForm(select) {
        return select ? select.closest('form') : null;
    }

    function removeIdOption(select) {
        if (!select) {
            return;
        }

        var idOption = select.querySelector('option[value="id"]');

        if (!idOption) {
            return;
        }

        var wasSelected = idOption.selected;
        idOption.remove();

        if (wasSelected) {
            var fallback = select.querySelector('option[value="title"]') || select.options[0];

            if (fallback) {
                fallback.selected = true;
                select.value = fallback.value;
                select.dispatchEvent(new Event('change', { bubbles: true }));
            }
        }
    }

    function removeIdChoicesUi() {
        document.querySelectorAll('.choices__item[data-value="id"]').forEach(function (node) {
            node.remove();
        });

        document.querySelectorAll('.choices__item--choice[data-value="id"]').forEach(function (node) {
            node.remove();
        });
    }

    function normalizeSearchField() {
        toggleQuestionListClass();

        if (!isSurveyListPage()) {
            return;
        }

        var select = getSearchSelect();

        if (!select) {
            return;
        }

        removeIdOption(select);
        removeIdChoicesUi();

        var form = getSearchForm(select);

        if (form && !form.dataset.surveySearchNormalized) {
            form.dataset.surveySearchNormalized = '1';
            form.addEventListener('submit', function () {
                if (select.value === 'id') {
                    var fallback = select.querySelector('option[value="title"]') || select.options[0];

                    if (fallback) {
                        select.value = fallback.value;
                    }
                }
            });
        }
    }

    document.addEventListener('DOMContentLoaded', normalizeSearchField);
    document.addEventListener('turbo:load', normalizeSearchField);

    // Mutationen werden gebündelt: viele DOM-Änderungen lösen nur einen
    // normalizeSearchField-Lauf pro Frame aus statt einen pro Mutation.
    var scheduled = false;
    var scheduleNormalize = function () {
        if (scheduled) {
            return;
        }

        scheduled = true;

        var run = function () {
            scheduled = false;
            normalizeSearchField();
        };

        if (typeof window.requestAnimationFrame === 'function') {
            window.requestAnimationFrame(run);
        } else {
            window.setTimeout(run, 100);
        }
    };

    var observer = new MutationObserver(scheduleNormalize);

    observer.observe(document.documentElement, { childList: true, subtree: true });
})();