var sSELECTEDSERVER='';
var sACTIVESERVERTAB='cronlogs';


/**
 * get query parameters from url as object
 * @returns {object}
 */
function getQueryParams() {
    qs = document.location.search.split('+').join(' ');
 
    var params = {},
            tokens,
            re = /[?&]?([^=]+)=([^&]*)/g;
 
    while (tokens = re.exec(qs)) {
        params[decodeURIComponent(tokens[1])] = decodeURIComponent(tokens[2]);
    }
 
    return params;
}

/**
 * make an ajax-request and put response content into given div id
 * @param {string} id  id of the div to be filled
 * @returns {undefined}
 */
function getPageItem(id, sData) {
	// $('#'+id).html('reading ...');
        if(!$('#'+id).hasClass('active')){
            $('#errorlog').html('#'+id+' is not active') ;
            return false;
        }
        var phpscript='get.php';
        $('#'+id).css('opacity', '0.2');
        
        if(!sData){
            sData='item='+id+'&server='+sSELECTEDSERVER;
        }
	jQuery.ajax({
		url: phpscript,
		data: sData,
		type: "GET",
		success:function(data){
                    $('#'+id).css('opacity', '1');
                    $('#'+id).html(data);
		},
		error:function(){
                    $('#'+id).css('opacity', false);
                    $('#'+id).html('Failed :-/');
                    $('#errorlog').html(
                        $('#errorlog').html('AJAX error: <a href="'+phpscript+'?' + sData+'">'+phpscript+'?' + sData+'</a>')
                    );
		}
	});
}

/**
 * set server (show its navigation)
 * tghis action is used after clicking a servername in the navigation
 * 
 * @param {string} sServer
 * @returns {undefined}
 */
function setServer(sServer){
    if(!sServer){
        return false;
    }
    sSELECTEDSERVER=sServer;
    $('#lblServername').html('<i class="far fa-hdd"></i> '+sSELECTEDSERVER);
    getPageItem(sACTIVESERVERTAB);
}

/**
 * onclick callback for tabs crontable, crontabs, graph
 * @param {object} oLink  clicked link
 * @returns {undefined}
 */
function setTab(oLink){
    sTabid=$(oLink).attr('href').replace(/^#/, '');
    sACTIVESERVERTAB=sTabid;

    $('nav.tabs a').each(function(){
        $(this).removeClass('active');
    });
    $(oLink).addClass('active');
    $('#tabcontent div').each(function(){
        $(this).removeClass('active');
    });
    $('#'+sTabid).addClass('active');

    setServer(sSELECTEDSERVER);
}

function showFile(sLogfile){
    getPageItem(sACTIVESERVERTAB, 'item=showlog&logfile='+sLogfile);
}
function showFileBack(){
    getPageItem(sACTIVESERVERTAB);
}