// These default options are for translation but can be used
// for any other datatables settings
// To use it, write:
//  $("#table_id").dataTable($.extend(true, {}, dataTableDefaults, {
//      // other settings
//  } ) );
var dataTablesDefaults = {
    "language": {
        "paginate": {
            "first"    : __('First'),
            "last"     : __('Last'),
            "next"     : __('Next'),
            "previous" : __('Previous'),
        },
        "emptyTable"       : __('No data available in table'),
        "info"             : __('Showing _START_ to _END_ of _TOTAL_ entries'),
        "infoEmpty"        : __('No entries to show'),
        "infoFiltered"     : __('(filtered from _MAX_ total entries)'),
        "lengthMenu"       : __('Show _MENU_ entries'),
        "loadingRecords"   : __('Loading...'),
        "processing"       : __('Processing...'),
        "search"           : __('Search:'),
        "zeroRecords"      : __('No matching records found'),
        buttons: {
            "copyTitle"     : __('Copy to clipboard'),
            "copyKeys"      : __('Press <i>ctrl</i> or <i>⌘</i> + <i>C</i> to copy the table data<br>to your system clipboard.<br><br>To cancel, click this message or press escape.'),
            "copySuccess": {
                _: __('Copied %d rows to clipboard'),
                1: __('Copied one row to clipboard'),
            },
            "print": __("Print"),
            "copy": __("Copy"),
            "csv": __("CSV"),
            "excel": __("Excel")
        }
    },
    "dom": '<"dt-info"i><"top pager"<"table_entries"lp><"table_controls"fB>>tr<"bottom pager"ip>',
    "buttons": [{
        fade: 100,
        className: "dt_button_clear_filter",
        titleAttr: __('Clear filter'),
        enabled: false,
        text: '<i class="fa fa-lg fa-times"></i> <span class="dt-button-text">' + __('Clear filter') + '</span>',
        available: function ( dt ) {
            // The "clear filter" button is made available if this test returns true
            if( dt.settings()[0].aanFeatures.f ){ // aanFeatures.f is null if there is no search form
                return true;
            }
        },
        action: function ( e, dt, node ) {
            dt.search( "" ).draw("page");
            node.addClass("disabled");
        }
    }],
    "lengthMenu": [[10, 20, 50, 100, -1], [10, 20, 50, 100, __('All')]],
    "pageLength": 20,
    "fixedHeader": true,
    initComplete: function( settings ) {
        var tableId = settings.nTable.id
        var state =  settings.oLoadedState;
        state && toggledClearFilter(state.search.search, tableId);
        // When the DataTables search function is triggered,
        // enable or disable the "Clear filter" button based on
        // the presence of a search string
        $(this).on( 'search.dt', function ( e, settings ) {
            toggledClearFilter(settings.oPreviousSearch.sSearch, tableId);
        });

        if (settings.ajax) {
            let table_node = $("#" + tableId);
            if ( typeof this.api === 'function' ) {
                _dt_add_delay(this.api(), table_node);
            } else {
                let dt = $(table_node).DataTable();
                _dt_add_delay(dt, table_node);
            }
        }
    }
};

function toggledClearFilter(searchText, tableId){
    if( searchText == "" ){
        $("#" + tableId + "_wrapper").find(".dt_button_clear_filter").addClass("disabled");
    } else {
        $("#" + tableId + "_wrapper").find(".dt_button_clear_filter").removeClass("disabled");
    }
}


// Return an array of string containing the values of a particular column
$.fn.dataTableExt.oApi.fnGetColumnData = function ( oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty ) {
    // check that we have a column id
    if ( typeof iColumn == "undefined" ) return new Array();
    // by default we only wany unique data
    if ( typeof bUnique == "undefined" ) bUnique = true;
    // by default we do want to only look at filtered data
    if ( typeof bFiltered == "undefined" ) bFiltered = true;
    // by default we do not wany to include empty values
    if ( typeof bIgnoreEmpty == "undefined" ) bIgnoreEmpty = true;
    // list of rows which we're going to loop through
    var aiRows;
    // use only filtered rows
    if (bFiltered == true) aiRows = oSettings.aiDisplay;
    // use all rows
    else aiRows = oSettings.aiDisplayMaster; // all row numbers

    // set up data array
    var asResultData = new Array();
    for (var i=0,c=aiRows.length; i<c; i++) {
        iRow = aiRows[i];
        var aData = this.fnGetData(iRow);
        var sValue = aData[iColumn];
        // ignore empty values?
        if (bIgnoreEmpty == true && sValue.length == 0) continue;
        // ignore unique values?
        else if (bUnique == true && jQuery.inArray(sValue, asResultData) > -1) continue;
        // else push the value onto the result data array
        else asResultData.push(sValue);
    }
    return asResultData;
}

// List of unbind keys (Ctrl, Alt, Direction keys, etc.)
// These keys must not launch filtering
var blacklist_keys = new Array(0, 16, 17, 18, 37, 38, 39, 40);

// Add a filtering delay on general search and on all input (with a class 'filter')
jQuery.fn.dataTableExt.oApi.fnAddFilters = function ( oSettings, sClass, iDelay ) {
    var table = this;
    var filterTimerId = null;
    $(table).find("input."+sClass).keyup(function(event) {
      if (blacklist_keys.indexOf(event.keyCode) != -1) {
        return this;
      }else if ( event.keyCode == '13' ) {
        table.fnFilter( $(this).val(), $(this).attr('data-column_num') );
      } else {
        window.clearTimeout(filterTimerId);
        var input = this;
        filterTimerId = window.setTimeout(function() {
          table.fnFilter($(input).val(), $(input).attr('data-column_num'));
        }, iDelay);
      }
    });
    $(table).find("select."+sClass).on('change', function() {
        table.fnFilter($(this).val(), $(this).attr('data-column_num'));
    });
}

// Sorting on html contains
// <a href="foo.pl">bar</a> sort on 'bar'
function dt_overwrite_html_sorting_localeCompare() {
    jQuery.fn.dataTableExt.oSort['html-asc']  = function(a,b) {
        a = a.replace(/<.*?>/g, "").replace(/\s+/g, " ");
        b = b.replace(/<.*?>/g, "").replace(/\s+/g, " ");
        if (typeof(a.localeCompare == "function")) {
           return a.localeCompare(b);
        } else {
           return (a > b) ? 1 : ((a < b) ? -1 : 0);
        }
    };

    jQuery.fn.dataTableExt.oSort['html-desc'] = function(a,b) {
        a = a.replace(/<.*?>/g, "").replace(/\s+/g, " ");
        b = b.replace(/<.*?>/g, "").replace(/\s+/g, " ");
        if(typeof(b.localeCompare == "function")) {
            return b.localeCompare(a);
        } else {
            return (b > a) ? 1 : ((b < a) ? -1 : 0);
        }
    };

    jQuery.fn.dataTableExt.oSort['num-html-asc']  = function(a,b) {
        var x = a.replace( /<.*?>/g, "" );
        var y = b.replace( /<.*?>/g, "" );
        x = parseFloat( x );
        y = parseFloat( y );
        return ((x < y) ? -1 : ((x > y) ?  1 : 0));
    };

    jQuery.fn.dataTableExt.oSort['num-html-desc'] = function(a,b) {
        var x = a.replace( /<.*?>/g, "" );
        var y = b.replace( /<.*?>/g, "" );
        x = parseFloat( x );
        y = parseFloat( y );
        return ((x < y) ?  1 : ((x > y) ? -1 : 0));
    };
}

$.fn.dataTableExt.oSort['num-html-asc']  = function(a,b) {
    var x = a.replace( /<.*?>/g, "" );
    var y = b.replace( /<.*?>/g, "" );
    x = parseFloat( x );
    y = parseFloat( y );
    return ((x < y) ? -1 : ((x > y) ?  1 : 0));
};

$.fn.dataTableExt.oSort['num-html-desc'] = function(a,b) {
    var x = a.replace( /<.*?>/g, "" );
    var y = b.replace( /<.*?>/g, "" );
    x = parseFloat( x );
    y = parseFloat( y );
    return ((x < y) ?  1 : ((x > y) ? -1 : 0));
};

(function() {

/*
 * Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license
 * Author: Jim Palmer (based on chunking idea from Dave Koelle)
 * Contributors: Mike Grier (mgrier.com), Clint Priest, Kyle Adams, guillermo
 * See: http://js-naturalsort.googlecode.com/svn/trunk/naturalSort.js
 */
function naturalSort (a, b) {
    var re = /(^-?[0-9]+(\.?[0-9]*)[df]?e?[0-9]?$|^0x[0-9a-f]+$|[0-9]+)/gi,
        sre = /(^[ ]*|[ ]*$)/g,
        dre = /(^([\w ]+,?[\w ]+)?[\w ]+,?[\w ]+\d+:\d+(:\d+)?[\w ]?|^\d{1,4}[\/\-]\d{1,4}[\/\-]\d{1,4}|^\w+, \w+ \d+, \d{4})/,
        hre = /^0x[0-9a-f]+$/i,
        ore = /^0/,
        // convert all to strings and trim()
        x = a.toString().replace(sre, '') || '',
        y = b.toString().replace(sre, '') || '',
        // chunk/tokenize
        xN = x.replace(re, '\0$1\0').replace(/\0$/,'').replace(/^\0/,'').split('\0'),
        yN = y.replace(re, '\0$1\0').replace(/\0$/,'').replace(/^\0/,'').split('\0'),
        // numeric, hex or date detection
        xD = parseInt(x.match(hre), 10) || (xN.length != 1 && x.match(dre) && Date.parse(x)),
        yD = parseInt(y.match(hre), 10) || xD && y.match(dre) && Date.parse(y) || null;
    // first try and sort Hex codes or Dates
    if (yD)
        if ( xD < yD ) return -1;
        else if ( xD > yD )  return 1;
    // natural sorting through split numeric strings and default strings
    for(var cLoc=0, numS=Math.max(xN.length, yN.length); cLoc < numS; cLoc++) {
        // find floats not starting with '0', string or 0 if not defined (Clint Priest)
        var oFxNcL = !(xN[cLoc] || '').match(ore) && parseFloat(xN[cLoc]) || xN[cLoc] || 0;
        var oFyNcL = !(yN[cLoc] || '').match(ore) && parseFloat(yN[cLoc]) || yN[cLoc] || 0;
        // handle numeric vs string comparison - number < string - (Kyle Adams)
        if (isNaN(oFxNcL) !== isNaN(oFyNcL)) return (isNaN(oFxNcL)) ? 1 : -1;
        // rely on string comparison if different types - i.e. '02' < 2 != '02' < '2'
        else if (typeof oFxNcL !== typeof oFyNcL) {
            oFxNcL += '';
            oFyNcL += '';
        }
        if (oFxNcL < oFyNcL) return -1;
        if (oFxNcL > oFyNcL) return 1;
    }
    return 0;
}

jQuery.extend( jQuery.fn.dataTableExt.oSort, {
    "natural-asc": function ( a, b ) {
        return naturalSort(a,b);
    },

    "natural-desc": function ( a, b ) {
        return naturalSort(a,b) * -1;
    }
} );

}());

/* Plugin to allow sorting on data stored in a span's title attribute
 *
 * Ex: <td><span title="[% ISO_date %]">[% formatted_date %]</span></td>
 *
 * In DataTables config:
 *     "data": [
 *        { "type": "title-string" },
 *      ]
 * http://datatables.net/plug-ins/sorting#hidden_title_string
 */
jQuery.extend( jQuery.fn.dataTableExt.oSort, {
    "title-string-pre": function ( a ) {
        var m = a.match(/title="(.*?)"/);
        if ( null !== m && m.length ) {
            return m[1].toLowerCase();
        }
        return "";
    },

    "title-string-asc": function ( a, b ) {
        return ((a < b) ? -1 : ((a > b) ? 1 : 0));
    },

    "title-string-desc": function ( a, b ) {
        return ((a < b) ? 1 : ((a > b) ? -1 : 0));
    }
} );

(function() {

    /* Plugin to allow text sorting to ignore articles
     *
     * In DataTables config:
     *     "data": [
     *        { "type": "anti-the" },
     *      ]
     * Based on the plugin found here:
     * http://datatables.net/plug-ins/sorting#anti_the
     * Modified to exclude HTML tags from sorting
     * Extended to accept a string of space-separated articles
     * from a configuration file (in English, "a," "an," and "the")
     */

    var config_exclude_articles_from_sort = __('a an the');
    if (config_exclude_articles_from_sort){
        var articles = config_exclude_articles_from_sort.split(" ");
        var rpattern = "";
        for(i=0;i<articles.length;i++){
            rpattern += "^" + articles[i] + " ";
            if(i < articles.length - 1){ rpattern += "|"; }
        }
        var re = new RegExp(rpattern, "i");
    }

    jQuery.extend( jQuery.fn.dataTableExt.oSort, {
        "anti-the-pre": function ( a ) {
            var x = String(a).replace( /<[\s\S]*?>/g, "" );
            var y = x.trim();
            var z = y.replace(re, "").toLowerCase();
            return z;
        },

        "anti-the-asc": function ( a, b ) {
            return ((a < b) ? -1 : ((a > b) ? 1 : 0));
        },

        "anti-the-desc": function ( a, b ) {
            return ((a < b) ? 1 : ((a > b) ? -1 : 0));
        }
    });

}());

// Remove string between NSB NSB characters
$.fn.dataTableExt.oSort['nsb-nse-asc'] = function(a,b) {
    var pattern = new RegExp("\x88.*\x89");
    a = a.replace(pattern, "");
    b = b.replace(pattern, "");
    return (a > b) ? 1 : ((a < b) ? -1 : 0);
}
$.fn.dataTableExt.oSort['nsb-nse-desc'] = function(a,b) {
    var pattern = new RegExp("\x88.*\x89");
    a = a.replace(pattern, "");
    b = b.replace(pattern, "");
    return (b > a) ? 1 : ((b < a) ? -1 : 0);
}

/* Define two custom functions (asc and desc) for basket callnumber sorting */
jQuery.fn.dataTableExt.oSort['callnumbers-asc']  = function(x,y) {
        var x_array = x.split("<div>");
        var y_array = y.split("<div>");

        /* Pop the first elements, they are empty strings */
        x_array.shift();
        y_array.shift();

        x_array = jQuery.map( x_array, function( a ) {
            return parse_callnumber( a );
        });
        y_array = jQuery.map( y_array, function( a ) {
            return parse_callnumber( a );
        });

        x_array.sort();
        y_array.sort();

        x = x_array.shift();
        y = y_array.shift();

        if ( !x ) { x = ""; }
        if ( !y ) { y = ""; }

        return ((x < y) ? -1 : ((x > y) ?  1 : 0));
};

jQuery.fn.dataTableExt.oSort['callnumbers-desc'] = function(x,y) {
        var x_array = x.split("<div>");
        var y_array = y.split("<div>");

        /* Pop the first elements, they are empty strings */
        x_array.shift();
        y_array.shift();

        x_array = jQuery.map( x_array, function( a ) {
            return parse_callnumber( a );
        });
        y_array = jQuery.map( y_array, function( a ) {
            return parse_callnumber( a );
        });

        x_array.sort();
        y_array.sort();

        x = x_array.pop();
        y = y_array.pop();

        if ( !x ) { x = ""; }
        if ( !y ) { y = ""; }

        return ((x < y) ?  1 : ((x > y) ? -1 : 0));
};

function parse_callnumber ( html ) {
    var array = html.split('<span class="callnumber">');
    if ( array[1] ) {
        array = array[1].split('</span>');
        return array[0];
    } else {
        return "";
    }
}

// see http://www.datatables.net/examples/advanced_init/footer_callback.html
function footer_column_sum( api, column_numbers ) {
    // Remove the formatting to get integer data for summation
    var intVal = function ( i ) {
        if ( typeof i === 'number' ) {
            if ( isNaN(i) ) return 0;
            return i;
        } else if ( typeof i === 'string' ) {
            var value = i.replace(/[a-zA-Z ,.]/g, '')*1;
            if ( isNaN(value) ) return 0;
            return value;
        }
        return 0;
    };


    for ( var indice = 0 ; indice < column_numbers.length ; indice++ ) {
        var column_number = column_numbers[indice];

        var total = 0;
        var cells = api.column( column_number, { page: 'current' } ).nodes().to$().find("span.total_amount");
        var budgets_totaled = [];
        $(cells).each(function(){ budgets_totaled.push( $(this).data('self_id') ); });
        $(cells).each(function(){
            if( $(this).data('parent_id') && $.inArray( $(this).data('parent_id'), budgets_totaled) > -1 ){
                return;
            } else {
                total += intVal( $(this).html() );
            }

        });
        total /= 100; // Hard-coded decimal precision

        // Update footer
        $( api.column( column_number ).footer() ).html(total.format_price());
    };
}

function filterDataTable( table, column, term ){
    if( column ){
        table.column( column ).search( term ).draw("page");
    } else {
        table.search( term ).draw("page");
    }
}

jQuery.fn.dataTable.ext.errMode = function(settings, note, message) {
    if ( settings && settings.jqXHR ) {
        console.log("Got %s (%s)".format(settings.jqXHR.status, settings.jqXHR.statusText));
        alert(__("Something went wrong when loading the table.\n%s: %s. \n%s").format(
            settings.jqXHR.status,
            settings.jqXHR.statusText,
            ( settings.jqXHR.responseJSON && settings.jqXHR.responseJSON.errors ) ? settings.jqXHR.responseJSON.errors.map(m => m.message).join("\n") : ''
        ));
    } else {
        alert(__("Something went wrong when loading the table."));
    }
    console.log(message);
};

function _dt_default_ajax (params){
    let default_filters = params.default_filters;
    let options = params.options;

    if(!options.criteria || ['contains', 'starts_with', 'ends_with', 'exact'].indexOf(options.criteria.toLowerCase()) === -1) options.criteria = 'contains';
    options.criteria = options.criteria.toLowerCase();

    return {
        'type': 'GET',
        'cache': true,
        'dataSrc': 'data',
        'beforeSend': function(xhr, settings) {
            this._xhr = xhr;
            if(options.embed) {
                xhr.setRequestHeader('x-koha-embed', Array.isArray(options.embed)?options.embed.join(','):options.embed);
            }
        },
        'dataFilter': function(data, type) {
            var json = {data: JSON.parse(data)};
            if (total = this._xhr.getResponseHeader('x-total-count')) {
                json.recordsTotal = total;
                json.recordsFiltered = total;
            }
            if (total = this._xhr.getResponseHeader('x-base-total-count')) {
                json.recordsTotal = total;
            }
            if (draw = this._xhr.getResponseHeader('x-koha-request-id')) {
                json.draw = draw;
            }

            return JSON.stringify(json);
        },
        'data': function( data, settings ) {
            var length = data.length;
            var start  = data.start;

            var dataSet = {
                _page: Math.floor(start/length) + 1,
                _per_page: length
            };

            function build_query(col, value){

                var parts = [];
                var attributes = col.data.split(':');
                for (var i=0;i<attributes.length;i++){
                    var part = {};
                    var attr = attributes[i];
                    let criteria = options.criteria;
                    if ( value.match(/^\^(.*)\$$/) ) {
                        value = value.replace(/^\^/, '').replace(/\$$/, '');
                        criteria = "exact";
                    } else {
                        // escape SQL LIKE special characters %
                        value = value.replace(/(\%|\\)/g, "\\$1");
                    }

                    let built_value;
                    if ( col.type == 'date' ) {
                        let rfc3339 = $date_to_rfc3339(value);
                        if ( rfc3339 != 'Invalid Date' ) {
                            built_value = rfc3339;
                        }
                    }

                    if ( col.datatype !== undefined ) {
                        if (col.datatype == 'related-object') {
                            let query_term = value;

                            if (criteria != 'exact') {
                                query_term = { like: (['contains', 'ends_with'].indexOf(criteria) !== -1 ? '%' : '') + value + (['contains', 'starts_with'].indexOf(criteria) !== -1 ? '%' : '') };
                            }

                            part = {
                                [col.related + '.' + col.relatedKey]: col.relatedValue,
                                [col.related + '.' + col.relatedSearchOn]: query_term
                            };
                        } else {
                            console.log("datatype %s not supported yet".format(col.datatype));
                        }
                    }

                    if (col.datatype != 'related-object') {
                        let value_part;
                        if ( criteria === 'exact' ) {
                            value_part = built_value ? [value, built_value] : value
                        } else {
                            let like = {like: (['contains', 'ends_with'].indexOf(criteria) !== -1?'%':'') + value + (['contains', 'starts_with'].indexOf(criteria) !== -1?'%':'')};
                            value_part = built_value ? [like, built_value] : like;
                        }

                        part[!attr.includes('.')?'me.'+attr:attr] = value_part;
                    }

                    parts.push(part);
                }
                return parts;
            }

            var filter = data.search.value;
            // Build query for each column filter
            var and_query_parameters = settings.aoColumns
            .filter(function(col) {
                return col.bSearchable && typeof col.data == 'string' && data.columns[col.idx].search.value != ''
            })
            .map(function(col) {
                var value = data.columns[col.idx].search.value;
                return build_query(col, value)
            })
            .map(function r(e){
                return ($.isArray(e) ? $.map(e, r) : e);
            });

            // Build query for the global search filter
            var or_query_parameters = settings.aoColumns
            .filter(function(col) {
                return col.bSearchable && filter != ''
            })
            .map(function(col) {
                var value = filter;
                return build_query(col, value)
            })
            .map(function r(e){
                return ($.isArray(e) ? $.map(e, r) : e);
            });

            if ( default_filters ) {
                let additional_filters = {};
                for ( f in default_filters ) {
                    let k; let v;
                    if ( typeof(default_filters[f]) === 'function' ) {
                        let val = default_filters[f]();
                        if ( val != undefined && val != "" ) {
                            k = f; v = val;
                        }
                    } else {
                        k = f; v = default_filters[f];
                    }

                    // Pass to -or if you want a separate OR clause
                    // It's not the usual DBIC notation!
                    if ( f == '-or' ) {
                        if (v) or_query_parameters.push(v)
                    } else if ( f == '-and' ) {
                        if (v) and_query_parameters.push(v)
                    } else if ( v ) {
                        additional_filters[k] = v;
                    }
                }
                if ( Object.keys(additional_filters).length ) {
                    and_query_parameters.push(additional_filters);
                }
            }
            query_parameters = and_query_parameters;
            if ( or_query_parameters.length) {
                query_parameters.push(or_query_parameters);
            }

            if(query_parameters.length) {
                query_parameters = JSON.stringify(query_parameters.length === 1?query_parameters[0]:{"-and": query_parameters});
                if(options.header_filter) {
                    options.query_parameters = query_parameters;
                } else {
                    dataSet.q = query_parameters;
                    delete options.query_parameters;
                }
            } else {
                delete options.query_parameters;
            }

            dataSet._match = options.criteria;

            if ( data["draw"] !== undefined ) {
                settings.ajax.headers = { 'x-koha-request-id': data.draw }
            }

            if(options.columns) {
                var order = data.order;
                var orderArray = new Array();
                order.forEach(function (e,i) {
                    var order_col      = e.column;
                    var order_by       = options.columns[order_col].data;
                    order_by           = order_by.split(':');
                    var order_dir      = e.dir == 'asc' ? '+' : '-';
                    Array.prototype.push.apply(orderArray,order_by.map(x => order_dir + (!x.includes('.')?'me.'+x:x)));
                });
                dataSet._order_by = orderArray.filter((v, i, a) => a.indexOf(v) === i).join(',');
            }

            return dataSet;
        }
    }
}

function _dt_buttons(params){
    let included_ids = params.included_ids || [];
    let settings = params.settings || {};
    let table_settings = params.table_settings;

    var exportColumns = ":visible:not(.noExport)";
    if( settings.hasOwnProperty("exportColumns") ){
        // A custom buttons configuration has been passed from the page
        exportColumns = settings["exportColumns"];
    }

    var export_format = {
        body: function ( data, row, column, node ) {
            var newnode = $(node);

            if ( newnode.find(".noExport").length > 0 ) {
                newnode = newnode.clone();
                newnode.find(".noExport").remove();
            }

            return newnode.text().replace( /\n/g, ' ' ).trim();
        }
    }

    var export_buttons = [
        {
            extend: 'excelHtml5',
            exportOptions: {
                columns: exportColumns,
                format:  export_format
            },
        },
        {
            extend: 'csvHtml5',
            exportOptions: {
                columns: exportColumns,
                format:  export_format
            },
        },
        {
            extend: 'copyHtml5',
            exportOptions: {
                columns: exportColumns,
                format:  export_format
            },
        },
        {
            extend: 'print',
            exportOptions: {
                columns: exportColumns,
                format:  export_format
            },
        }
    ];

    let buttons = [];
    buttons.push(
        {
            fade: 100,
            className: "dt_button_clear_filter",
            titleAttr: __("Clear filter"),
            enabled: false,
            text: '<i class="fa fa-lg fa-remove"></i> <span class="dt-button-text">' + __("Clear filter") + '</span>',
            action: function ( e, dt, node, config ) {
                dt.search( "" ).draw("page");
                node.addClass("disabled");
            }
        }
    );

    if( included_ids.length > 0 ){
        buttons.push(
            {
                extend: 'colvis',
                fade: 100,
                columns: included_ids,
                className: "columns_controls",
                titleAttr: __("Columns settings"),
                text: '<i class="fa fa-lg fa-gear"></i> <span class="dt-button-text">' + __("Columns") + '</span>',
                exportOptions: {
                    columns: exportColumns
                }
            }
        );
    }

    buttons.push(
        {
            extend: 'collection',
            autoClose: true,
            fade: 100,
            className: "export_controls",
            titleAttr: __("Export or print"),
            text: '<i class="fa fa-lg fa-download"></i> <span class="dt-button-text">' + __("Export") + '</span>',
            buttons: export_buttons
        }
    );

    if ( table_settings && CAN_user_parameters_manage_column_config ) {
        buttons.push(
            {
                className: "dt_button_configure_table",
                fade: 100,
                titleAttr: __("Configure table"),
                text: '<i class="fa fa-lg fa-wrench"></i> <span class="dt-button-text">' + __("Configure") + '</span>',
                action: function() {
                    window.location = '/cgi-bin/koha/admin/columns_settings.pl?module=' + table_settings['module'] + '&page=' + table_settings['page'] + '&table=' + table_settings['table'];
                },
            }
        );
    }

    return buttons;
}

function _dt_visibility(node, table_settings, settings){
    var counter = 0;
    let hidden_ids = [];
    let included_ids = [];
    if ( table_settings ) {
        var columns_settings = table_settings['columns'];
        $(columns_settings).each( function() {
            let selector = '#' + node.attr('id');
            var named_id = $( 'thead th[data-colname="' + this.columnname + '"]', selector ).index( selector + ' th' );
            var used_id = settings.bKohaColumnsUseNames ? named_id : counter;
            if ( used_id == -1 ) return;

            if ( this['is_hidden'] == "1" ) {
                hidden_ids.push( used_id );
            }
            if ( this['cannot_be_toggled'] == "0" ) {
                included_ids.push( used_id );
            }
            counter++;
        });
    }
    return [hidden_ids, included_ids];
}

function _dt_on_visibility(add_filters, table_node, table_dt){
    if ( add_filters ) {
        let visible_columns = table_dt.columns().visible();
        $(table_node).find('thead tr:eq(1) th').each( function (i) {
            let th_id = $(this).data('th-id');
            if ( visible_columns[th_id] == false ) {
                $(this).hide();
            } else {
                $(this).show();
            }
        });
    }

    if( typeof columnsInit == 'function' ){
        // This function can be created separately and used to trigger
        // an event after the DataTable has loaded AND column visibility
        // has been updated according to the table's configuration
        columnsInit();
    }
}

function _dt_add_filters(table_node, table_dt, filters_options = {}) {
    $(table_node).find('thead tr').clone().appendTo( $(table_node).find('thead') );

    $(table_node).find('thead tr:eq(1) th').each( function (i) {
        var is_searchable = table_dt.settings()[0].aoColumns[i].bSearchable;
        $(this).removeClass('sorting').removeClass("sorting_asc").removeClass("sorting_desc");
        $(this).data('th-id', i);
        if ( is_searchable ) {
            let input_type = 'input';
            if ( $(this).data('filter') || filters_options.hasOwnProperty(i)) {
                input_type = 'select'
                let filter_type = $(this).data('filter');
                let existing_search = table_dt.column(i).search();
                let select = $('<select class="dt-select-filter"><option value=""></option></select');

                // FIXME eval here is bad and dangerous, how do we workaround that?
                if ( !filters_options.hasOwnProperty(i) ) {
                    filters_options[i] = eval(filter_type)
                } else if ( typeof filters_options[i] === "function" ) {
                    filters_options[i] = filters_options[i]()
                }
                $(filters_options[i]).each(function(){
                    let o = $('<option value="%s">%s</option>'.format(this._id, this._str));
                    if ( existing_search === this._id ) {
                        o.prop("selected", "selected");
                    }
                    o.appendTo(select);
                });
                $(this).html( select );
            } else {
                var title = $(this).text();
                var existing_search = table_dt.column(i).search();
                if ( existing_search ) {
                    $(this).html( '<input type="text" value="%s" style="width: 100%" />'.format(existing_search) );
                } else {
                    var search_title = __("%s search").format(title);
                    $(this).html( '<input type="text" placeholder="%s" style="width: 100%" />'.format(search_title) );
                }
            }

            function delay(callback, ms) {
                var timer = 0;
                return function () {
                    var context = this, args = arguments;
                    clearTimeout(timer);
                    timer = setTimeout(function () {
                        callback.apply(context, args);
                    }, ms || 0);
                };
            }

            $(input_type, this).on('keyup change', (delay(function () {
                if (table_dt.column(i).search() !== this.value) {
                    if (input_type == "input") {
                        table_dt
                            .column(i)
                            .search(this.value)
                            .draw();
                    } else {
                        table_dt
                            .column(i)
                            .search( this.value.length ? '^'+this.value+'$' : '', true, false )
                            .draw();
                    }
                }
            }, 500)));
        } else {
            $(this).html('');
        }
    } );
}

// List of unbind keys (Ctrl, Alt, Direction keys, etc.)
// These keys must not launch filtering
var blacklist_keys = new Array(0, 16, 17, 18, 37, 38, 39, 40);

function _dt_add_delay(table_dt, table_node, delay_ms) {

    delay = (typeof delay == 'undefined') ? 500 : delay;

    var previousSearch = null;
    var timerId = null;
    $("#"+table_node.attr('id')+"_wrapper").find(".dataTables_filter input")
    .unbind()
    .bind("keyup", function(event) {
        var input = $(this);
        if (blacklist_keys.indexOf(event.keyCode) != -1) {
            return;
        } else if ( event.keyCode == '13' ) {
            table_dt.search($(input).val()).draw();
        } else {
            let val = $(input).val();
            if (previousSearch === null || previousSearch != val){
                window.clearTimeout(timerId);
                previousSearch = val;
                timerId = window.setTimeout(function(){
                    table_dt.search($(input).val()).draw();
                }, delay);
            }
        }

        return;
    });
}

(function($) {

    /**
    * Create a new dataTables instance that uses the Koha RESTful API's as a data source
    * @param  {Object}  options                      Please see the dataTables settings documentation for further
    *                                                details
    * @param  {string}  [options.criteria=contains]  A koha specific extension to the dataTables settings block that
    *                                                allows setting the 'comparison operator' used in searches
    *                                                Supports `contains`, `starts_with`, `ends_with` and `exact` match
    * @param  {string}  [options.columns.*.type      Data type the field is stored in so we may impose some additional
    *                                                manipulation to search strings. Supported types are currenlty 'date'
    * @param  {Object}  table_settings               The arrayref as returned by TableSettings.GetTableSettings function
    *                                                available from the columns_settings template toolkit include
    * @param  {Boolean} add_filters                  Add a filters row as the top row of the table
    * @param  {Object}  default_filters              Add a set of default search filters to apply at table initialisation
    * @return {Object}                               The dataTables instance
    */
    $.fn.kohaTable = function(options, table_settings, add_filters, default_filters, filters_options) {
        var settings = null;

        if(options) {
            // Don't redefine the default initComplete
            if ( options.initComplete ) {
                let our_initComplete = options.initComplete;
                options.initComplete = function(settings, json){
                    our_initComplete(settings, json);
                    dataTablesDefaults.initComplete(settings, json)
                };
            }

            settings = $.extend(true, {}, dataTablesDefaults, {
                        'deferRender': true,
                        "paging": true,
                        'serverSide': true,
                        'searching': true,
                        'pagingType': 'full_numbers',
                        'processing': true,
                        'language': {
                            'emptyTable': (options.emptyTable) ? options.emptyTable : __("No data available in table")
                        },
                        'ajax': _dt_default_ajax({default_filters, options}),
                    }, options);
        }

        let hidden_ids, included_ids;
        [hidden_ids, included_ids] = _dt_visibility(this, table_settings, settings)

        settings["buttons"] = _dt_buttons({included_ids, settings, table_settings});

        $(".dt_button_clear_filter, .columns_controls, .export_controls, .dt_button_configure_table").tooltip();

        if ( add_filters ) {
            settings['orderCellsTop'] = true;
        }

        if ( table_settings ) {
            if ( table_settings.hasOwnProperty('default_display_length') && table_settings['default_display_length'] != null ) {
                settings["pageLength"] = table_settings['default_display_length'];
            }
            if ( table_settings.hasOwnProperty('default_sort_order') && table_settings['default_sort_order'] != null ) {
                settings["order"] = [[ table_settings['default_sort_order'], 'asc' ]];
            }
        }

        var table = $(this).dataTable(settings);

        var table_dt = table.DataTable();
        if ( add_filters ) {
            _dt_add_filters(this, table_dt, filters_options);
        }

        table.DataTable().on("column-visibility.dt", function(){_dt_on_visibility(add_filters, table, table_dt);})
            .columns( hidden_ids ).visible( false );

        return table;
    };

})(jQuery);