/* assoc_profile — v0.2.0
   Client-side search, filter, pagination, and bulk select for the manage index.
   No dependencies beyond Bootstrap 5 (already loaded by Hubzilla). */

(function () {
    'use strict';

    // ----------------------------------------------------------------
    // MANAGE INDEX — search, filter, paginate, bulk select
    // ----------------------------------------------------------------

    var PAGE_SIZE = 25;

    function initManageIndex() {
        var table = document.getElementById('assoc-manage-table');
        if (!table) return;

        var rows       = Array.from(table.querySelectorAll('tbody tr[data-slug]'));
        var searchInput = document.getElementById('assoc-search');
        var filterCounty = document.getElementById('assoc-filter-county');
        var filterType   = document.getElementById('assoc-filter-type');
        var filterStatus = document.getElementById('assoc-filter-status');
        var pageInfo     = document.getElementById('assoc-page-info');
        var prevBtn      = document.getElementById('assoc-page-prev');
        var nextBtn      = document.getElementById('assoc-page-next');
        var selectAll    = document.getElementById('assoc-select-all');
        var bulkBar      = document.getElementById('assoc-bulk-bar');
        var bulkCount    = document.getElementById('assoc-bulk-count');
        var exportBtn    = document.getElementById('assoc-export-selected');

        var currentPage  = 1;
        var filtered     = rows.slice();

        function getRowText(row) {
            return (row.dataset.slug + ' ' +
                    row.dataset.name + ' ' +
                    (row.dataset.county || '')).toLowerCase();
        }

        function applyFilters() {
            var q      = searchInput  ? searchInput.value.toLowerCase().trim()  : '';
            var county = filterCounty ? filterCounty.value : '';
            var type   = filterType   ? filterType.value   : '';
            var status = filterStatus ? filterStatus.value : '';

            filtered = rows.filter(function (row) {
                if (q && getRowText(row).indexOf(q) === -1) return false;
                if (county && row.dataset.county !== county) return false;
                if (type   && row.dataset.type   !== type)   return false;
                if (status && row.dataset.status  !== status) return false;
                return true;
            });

            currentPage = 1;
            render();
        }

        function render() {
            var total  = filtered.length;
            var pages  = Math.max(1, Math.ceil(total / PAGE_SIZE));
            currentPage = Math.min(currentPage, pages);
            var start  = (currentPage - 1) * PAGE_SIZE;
            var end    = Math.min(start + PAGE_SIZE, total);

            rows.forEach(function (row) { row.style.display = 'none'; });
            filtered.slice(start, end).forEach(function (row) { row.style.display = ''; });

            if (pageInfo) {
                pageInfo.textContent = total === 0
                    ? 'No associations found'
                    : 'Showing ' + (start + 1) + '–' + end + ' of ' + total;
            }
            if (prevBtn) prevBtn.disabled = currentPage <= 1;
            if (nextBtn) nextBtn.disabled = currentPage >= pages;
        }

        function updateBulkBar() {
            if (!bulkBar) return;
            var checked = table.querySelectorAll('tbody input[name="assoc_select[]"]:checked');
            var n = checked.length;
            bulkBar.style.display = n > 0 ? 'flex' : 'none';
            if (bulkCount) bulkCount.textContent = n + ' selected';
        }

        // Event wiring
        if (searchInput)  searchInput.addEventListener('input',  applyFilters);
        if (filterCounty) filterCounty.addEventListener('change', applyFilters);
        if (filterType)   filterType.addEventListener('change',   applyFilters);
        if (filterStatus) filterStatus.addEventListener('change', applyFilters);

        if (prevBtn) prevBtn.addEventListener('click', function () {
            if (currentPage > 1) { currentPage--; render(); }
        });
        if (nextBtn) nextBtn.addEventListener('click', function () {
            var pages = Math.max(1, Math.ceil(filtered.length / PAGE_SIZE));
            if (currentPage < pages) { currentPage++; render(); }
        });

        if (selectAll) {
            selectAll.addEventListener('change', function () {
                var visible = table.querySelectorAll('tbody tr[data-slug]:not([style*="none"]) input[name="assoc_select[]"]');
                visible.forEach(function (cb) { cb.checked = selectAll.checked; });
                updateBulkBar();
            });
        }

        table.addEventListener('change', function (e) {
            if (e.target.name === 'assoc_select[]') updateBulkBar();
        });

        if (exportBtn) {
            exportBtn.addEventListener('click', function () {
                var checked = Array.from(table.querySelectorAll('tbody input[name="assoc_select[]"]:checked'));
                var slugs   = checked.map(function (cb) { return cb.value; });
                if (!slugs.length) return;
                var form = document.getElementById('assoc-export-form');
                if (!form) return;
                document.getElementById('assoc-export-slugs').value = slugs.join(',');
                form.submit();
            });
        }

        render();
    }

    // ----------------------------------------------------------------
    // DIFF VIEW — confirm/skip per entry
    // ----------------------------------------------------------------

    function initDiffView() {
        var container = document.getElementById('assoc-diff-container');
        if (!container) return;

        container.addEventListener('change', function (e) {
            if (e.target.name === 'diff_action[]') {
                var entry = e.target.closest('.assoc-diff-entry');
                if (!entry) return;
                if (e.target.value === 'skip') {
                    entry.style.opacity = '0.45';
                } else {
                    entry.style.opacity = '1';
                }
            }
        });
    }

    // ----------------------------------------------------------------
    // INIT
    // ----------------------------------------------------------------

    document.addEventListener('DOMContentLoaded', function () {
        initManageIndex();
        initDiffView();
    });

})();