/**
 * $Id$
 *
 * Utilities used with tablesorter
 */

/**
 * Fetch rows from an ajax pagination call
 *
 * @param data
 * @param id
 * @param addcol
 * @param total
 * @returns {{}}
 */
function tsAjaxGetRows (data, id, addcol, total)
{
    
    //parse HTML string from entire page
    var parsedpage = $.parseHTML(data), table = $(parsedpage).find(id), r = {};
    //extract table body rows from html returned by smarty template file
    r.rows = $(table).find('tbody tr');
    //add any math total columns
    if (addcol) {
        $.each(addcol, function (key, value) {
            $(r.rows).append('<td data-tsmath="row-' + value['formula'] + '" data-tsmath-filter="*"></td >');
        });
    }
    //tablesorter needs total rows
    r.total = total;
    r.filteredRows = $(table).data('count');
    r.headers = null;
    return r;
}

/**
 * Generate an ajax url
 *
 * @param url
 * @param p
 * @param a
 * @returns {*}
 */
function tsAjaxUrl (url, p, a) {
    var vars = {}, urlparams, oneparam, sorts = false, sortindex, sortkey = 'sort-', filterindex, filterkey = 'filter-',
        params = [], dir, offset, newurl;
    if (a.custom !== false) {
        //parse out url parameters
        urlparams = url.slice(url.indexOf('?') + 1).split('&');
        for(var i = 0; i < urlparams.length; i++) {
            oneparam = urlparams[i].split('=');
            if (oneparam[0].search('sort') > -1) {
                sortindex = parseInt(oneparam[0].substr(5, oneparam[0].length - 6));
                if ($.isNumeric(sortindex)) {
                    sortkey = a.colselector ? sortkey + $(a.tableid + ' th:eq(' + sortindex + ')').attr('id')
                        : sortkey + sortindex;
                    vars[sortkey] = oneparam[1];
                }
            } else if (oneparam[0].search('filter') > -1) {
                filterindex = parseInt(oneparam[0].substr(7, oneparam[0].length - 8));
                if ($.isNumeric(filterindex)) {
                    filterkey = a.colselector ? filterkey + $(a.tableid + ' th:eq(' + filterindex + ')').attr('id')
                        : filterkey + filterindex;
                    vars[filterkey] = oneparam[1];
                }
            }
        }
        //iterate through url parameters
        $.each(vars, function(key, value) {
            //handle sort parameters
            if (a.asort && key in a.asort) {
                dir = value == 0 ? '_asc' : '_desc';
                //add sort if not yet defined or add sort for multiple comma-separated sort parameters
                !sorts ? sorts = a.asort[key] + dir : sorts += ',' + a.asort[key] + dir;
            }
            //handle column and external filter parameters
            if ($.inArray(value, a.extfilters) > -1) {
                params.push(decodeURIComponent(value));
            } else if ($.isPlainObject(a.colfilters) && key in a.colfilters) {
                a.colfilters[key] == value ? params.push(a.colfilters[key][value]) : params.push(a.colfilters[key] + '='
                    + value);
            }
        });
        //convert to tiki sort param sort parameter
        if (sorts) {
            params.push(a.sortparam + '=' + sorts);
        }
        //add any required params
        if (a.requiredparams) {
            $.each(a.requiredparams, function(key, value) {
                params.push(key + '=' + value);
            });
        }
        //offset parameter
        offset = ((p.page * p.size) >= p.filteredRows) ? '' : '&' + a.offset + '=' + (p.page * p.size);
        //build url, starting with no parameters
        newurl = url.slice(0,url.indexOf('?'));
        newurl = newurl + '?' + a.numrows + '=' + p.size + offset + '&tsAjax=y';
        $.each(params, function(key, value) {
            newurl = newurl + '&' + value;
        });
    } else {
        offset = ((p.page * p.size) >= p.filteredRows) ? '' : '&' + a.offset + '=' + (p.page * p.size);
        newurl = url + '&tsAjax=y' + offset + '&numrows=' + p.size;
    }
    return newurl;
}