$(document).ready(function () {
    const reportTitle = `PR Tracking - as of ${getFormattedDateTime()}`;

    loader = $('#overlay, #loader');
    var prTable = $('#PRTable').DataTable({
        serverSide: true,
        processing: true,
        searching: false,
        ordering: false,
        ajax: {
            url: endpoint.GetDetailedPRTracking,
            type: 'GET',
            data: function (d) {
                return {
                    draw: d.draw,
                    searchPRNo: ($('#srchPRNo').val() || '').trim(),
                    searchItemName: ($('#srchItem').val() || '').trim(),
                    searchDept: ($('#srchDept').val() || '').trim(),
                    searchStatusName: ($('#srchStatus').val() || '').trim(),
                    pageNumber: Math.floor(d.start / d.length) + 1,
                    pageSize: d.length
                };
            },
            dataSrc: function (json) {
                const $sel = $('#srchStatus');
                if ($sel.find('option').length <= 1 && json.statusList?.length) {
                    json.statusList.forEach(function (s) {
                        $sel.append(`<option value="${s}">${s}</option>`);
                    });
                }
                return json.data;
            },
            beforeSend: function () { loader.show(); },
            complete: function () { loader.hide(); },
            error: function (xhr, error) {
                loader.hide();
                if (typeof toastr !== 'undefined')
                    toastr.error('Failed to load data. Please try again.');
            }
        },
        dom: 'lBfrtip',
        buttons: [
            {
                text: '<i class="fas fa-file-csv"></i> CSV',
                className: 'btn btn-sm btn-secondary',
                action: function () { exportAllData('csv', endpoint.GetDetailedPRTracking, loader, reportTitle, colOnPRtracking); }
            },
            {
                text: '<i class="fas fa-file-excel"></i> Excel',
                className: 'btn btn-sm btn-success',
                action: function () { exportAllData('excel', endpoint.GetDetailedPRTracking, loader, reportTitle, colOnPRtracking); }
            },
            {
                text: '<i class="fas fa-file-pdf"></i> PDF',
                className: 'btn btn-sm btn-danger',
                action: function () { exportAllData('pdf', endpoint.GetDetailedPRTracking, loader, reportTitle, colOnPRtracking); }
            }
        ],
        columns: colOnPRtracking,
        rowCallback: rowStatusColorCallback,
        language: { emptyTable: "No approved records available" }
    });

    function debounce(fn, delay) {
        let t;
        return function (...args) {
            clearTimeout(t);
            t = setTimeout(() => fn.apply(this, args), delay);
        };
    }

    $('#srchPRNo, #srchItem, #srchDept')
        .on('keyup', debounce(() => prTable.ajax.reload(), 400));

    $('#srchStatus').on('change', function () {
        prTable.ajax.reload();
    });

    $('.aprv-search-clear').on('click', function () {
        $($(this).data('target')).val('').trigger('change');
    });
});

function getFormattedDateTime() {
    const now = new Date();
    const yyyy = now.getFullYear();
    const mm = String(now.getMonth() + 1).padStart(2, '0');
    const dd = String(now.getDate()).padStart(2, '0');
    const hh = String(now.getHours()).padStart(2, '0');
    const min = String(now.getMinutes()).padStart(2, '0');
    const ss = String(now.getSeconds()).padStart(2, '0');
    return `${yyyy}-${mm}-${dd}_${hh}${min}${ss}`;
}