(function ($) {
    'use strict';

    window.pmsInitPcFormsSchemeFilters = function () {
        if (window.pmsPcFormsSchemeFiltersInited) {
            return;
        }

        var $form = $('#pcFormsSchemeFilterForm');
        if (!$form.length) {
            return;
        }

        if (typeof $.fn.select2 !== 'function') {
            console.error('Select2 is required for PC Forms listing filters.');
            return;
        }

        window.pmsPcFormsSchemeFiltersInited = true;

        if (typeof window.pmsBindCleanFilterFormSubmit === 'function') {
            window.pmsBindCleanFilterFormSubmit('#pcFormsSchemeFilterForm');
        }

        var select2Opts = { theme: 'bootstrap4', width: '100%', allowClear: true };
        var $syncSelects = $form.find('select.scheme-project-sync');
        var $allFilterSelects = $form.find('select.scheme-filter-select');

        $allFilterSelects.each(function () {
            var $sel = $(this);
            if ($sel.hasClass('select2-hidden-accessible')) {
                return;
            }
            var placeholder = $.trim($sel.find('option[value=""]').first().text() || '');
            var opts = $.extend({}, select2Opts);
            if (placeholder !== '') {
                opts.placeholder = placeholder;
            }
            $sel.select2(opts);
        });

        var $richStatusSelect = $form.find('select[data-rich-status-filter]');
        if ($richStatusSelect.length) {
            $form.on('submit.pcFormsRichStatus', function () {
                var $selected = $richStatusSelect.find('option:selected');
                var filterType = $selected.data('filter-type') || '';
                var filterValue = $selected.data('filter-value') || '';

                $form.find('.pc-forms-rich-status-hidden').remove();
                $form.find('select[name="state"]').attr('name', filterType ? '_state_disabled' : 'state');

                if (filterType && filterValue) {
                    if (filterType === 'state') {
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="state" value="' + filterValue + '">');
                    } else if (filterType === 'workflow_stage') {
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="workflow_stage" value="' + filterValue + '">');
                    } else if (filterType === 'meeting_type') {
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="meeting_type" value="' + filterValue + '">');
                    } else if (filterType === 'meeting_type_cleared') {
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="meeting_type" value="' + filterValue + '">');
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="meeting_cleared" value="1">');
                    } else if (filterType === 'forum_label') {
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="forum_label" value="' + filterValue + '">');
                    } else if (filterType === 'declined') {
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="state" value="rejected">');
                        $form.append('<input type="hidden" class="pc-forms-rich-status-hidden" name="declined_label" value="' + filterValue + '">');
                    }
                }
            });
        }

        var syncing = false;
        $syncSelects.off('.pcFormsTripleSync');
        $syncSelects.on('change.pcFormsTripleSync select2:select.pcFormsTripleSync select2:clear.pcFormsTripleSync', function () {
            if (syncing) {
                return;
            }
            var $this = $(this);
            var pid = $this.val() || '';
            var itemData = null;

            if (pid !== '') {
                var $selectedOption = $this.find('option:selected');
                if ($selectedOption.length && $selectedOption.data('select2Data')) {
                    itemData = $selectedOption.data('select2Data');
                } else {
                    // Fallback to select2 data API
                    var s2data = $this.select2('data');
                    if (s2data && s2data.length > 0) {
                        itemData = s2data[0];
                    }
                }
            }

            syncing = true;
            try {
                $syncSelects.not(this).each(function () {
                    var $other = $(this);
                    if (($other.val() || '') !== pid) {
                        if (pid !== '' && itemData) {
                            // Create option if it doesn't exist
                            if (!$other.find('option[value="' + pid + '"]').length) {
                                var lookupType = $other.data('lookup-type') || '';
                                var label = pid;
                                if (lookupType === 'adp') label = itemData.adp_number || '—';
                                else if (lookupType === 'uid') label = itemData.code || itemData.uid || '—';
                                else label = itemData.name || itemData.text || '—';
                                var $newOpt = new Option(label, pid, true, true);
                                $($newOpt).data('select2Data', itemData);
                                $other.append($newOpt);
                            }
                        }
                        $other.val(pid).trigger('change.select2');
                    }
                });
            } finally {
                syncing = false;
            }
        });
    };
}(jQuery));