var AJAX = {
        XMLHttpFactories : [
            function () {return new XMLHttpRequest()},
            function () {return new ActiveXObject("Msxml2.XMLHTTP")},
            function () {return new ActiveXObject("Msxml3.XMLHTTP")},
            function () {return new ActiveXObject("Microsoft.XMLHTTP")}
        ],
        createXMLHTTPObject : function ()
        {
            xmlhttp = null;
            for (var i=0;i<AJAX.XMLHttpFactories.length;i++) {
                try {
                    xmlhttp = AJAX.XMLHttpFactories[i]();
                }
                catch (e) {
                    continue;
                }
                break;
            }
            return xmlhttp;
        },
        objectToURL : function (url,query_str_obj){
               url_str=url + '?';
               for(property in query_str_obj)
                   url_str+= property + "=" + escape( query_str_obj[property] ) + "&";
               return url_str;
        },
        execute : function (url, paramsobj, functionCallBack)
        {
            request = new Object();
            request.ajaxRequest = AJAX.createXMLHTTPObject();
            request.sendRequest = function()
            {
                if(request.ajaxRequest.readyState == 1){   //never happen, cause we create a new request each time
                    alert('error: still processing previous request');
                    return;
                }
                var escapedurl= AJAX.objectToURL(url, paramsobj);
                request.ajaxRequest.open('get', escapedurl);
                request.ajaxRequest.onreadystatechange = function(){
                    if(request.ajaxRequest.readyState == 4 && request.ajaxRequest.status == 200){
                        //alert(request.ajaxobj.responseText);
                        //alert ('testing callback' + paramsobj.elementid);
                        functionCallBack(request.ajaxRequest, paramsobj.elementid);
                    }
                }
                request.ajaxRequest.send(null);
            }
            request.sendRequest();
            return request;
        }
    }

    function execute_ajax_function(url, queryparams)
    {
            if(fiselement('divError')){
                    document.getElementById('divError').innerHTML = '';
            }

            AJAX.execute(url, queryparams , handleResponse);
    }

    function handleResponse(ajaxRequest)
    {
        //alert( ajaxRequest.responseText );
        document.getElementById('divajax').innerHTML = ajaxRequest.responseText;
    }

    function fsql(sql, elementid, divid, waitforlength){
            var queryparams = '';

            if(fiselement(elementid)){
                    var elementvalue = document.getElementById(elementid).value.trim();

                    if(elementvalue.length >= waitforlength){
                            sql = replaceAll(sql, '%23pin%23', elementvalue);

                            queryparams = {"SQL": sql, "response":"1"}; 
                            execute_ajax_function("includes/incexecutesql.php", queryparams);
                            //document.getElementById(divid).innerHTML = sql;
                    }
            }
    }

    function numbersonly(e){
            var key;
            var keychar;
            var result;

            if (window.event) 
                    key = window.event.keyCode;
            else if (e) 
                    key = e.which;
            else 
                    result = true;

            keychar = String.fromCharCode(key);

            if ((key==null) || (key==0) || (key==8) ||  (key==9) || (key==13) || (key==27) || (key==99) || (key==118))
                    result = true;     
            else if ((("-.0123456789").indexOf(keychar) > -1))
                    result = true;
            else{
                    alert('Only digits allowed');
                    result = false;
            }

            return result;
    }

    function fsetreadOnly(elementid){
            //alert(elementid);

            document.getElementById(elementid).checked = true;
            document.getElementById(elementid).readOnly = true;
            document.getElementById(elementid).disabled = true;
    }

    function fsetchecked(elementid, checked){
            if(checked == 1){
                    checked = true;
            }else{
                    checked = false;
            }

            for (var i=0; i<f1.elements.length; i++) {
                    if (f1.elements[i].type == "checkbox"){
                            var loopelementid = f1.elements[i].id;

                            if(loopelementid != '' && loopelementid.substr(0, 18) == elementid){
                                    document.getElementById(loopelementid).checked = checked;
                            }
                    }
            }

    }

    function fsetcheckbox(elementprefix, start, end, checked){
        if(checked == 1){
            checked = true;
        }else{
            checked = false;
        }

        for (var i = start; i <= end; i++) {
            elementid = elementprefix + '|' + i;
            document.getElementById(elementid).checked = checked;
        }

    }

    function fdivshow(elementid, show){
            if(show == 1){
                    show = 'block';
            }else{
                    show = 'none';
            }

            document.getElementById(elementid).style.display = show;
    }

    function fhiglightarea(elementprefix, elementid, colour, commadelimited){
            var arraycommadelimited = commadelimited.split(',');

            for (var i = 0; i < arraycommadelimited.length; i++) {
                    document.getElementById(elementprefix + arraycommadelimited[i]).style.background = 'white';
            }

            document.getElementById(elementprefix + elementid).style.background = colour;
    }

    function fiselement(elementid){
            var iselement = document.getElementById(elementid);
            if (iselement != null){
                    return true;
            }else{
                    return false;	
            }
    }

    function fvalidatecasecomment(){
            var result = true;

            result = fvalidatelength('crmcase', 3, 20);
/*
            if(result){
                    result = fvalidatelength('comment', 3, 1024);
            }
*/

            if(result){
                    return confirm('Are you sure you wish to perform this action?');
//			form.submit();
            }

            return false;
    }

    function fvalidatelength(elementid, minlength, maxlength){
            var result = true;

            if(fiselement(elementid)){
                    var elementvalue = document.getElementById(elementid).value.trim();

                    document.getElementById(elementid).style.background = 'white';

                    if(elementvalue == '' ||
                            elementvalue.length < minlength ||
                            elementvalue.length > maxlength
                    ){
                            alert ('"' + elementid + '" must be between ' + minlength + ' and ' + maxlength + ' in length');
                            document.getElementById(elementid).select();
                            document.getElementById(elementid).focus();
                            document.getElementById(elementid).style.background = 'red';

                            result = false;
                    }
            }

            return result;
    }

    function fvalidatenumeric(elementid, minvalue, maxvalue){
            var result = true;

            if(fiselement(elementid)){
                    var elementvalue = document.getElementById(elementid).value.trim(); 

                    elementvalue = parseFloat(elementvalue);
                    minvalue = parseFloat(minvalue);
                    maxvalue = parseFloat(maxvalue);

                    if(elementvalue == '' ||
                            isNaN(elementvalue)
                    ){
                            alert ('"' + elementid + '" must be a number');
                            document.getElementById(elementid).select();
                            document.getElementById(elementid).focus();
                            document.getElementById(elementid).style.background = 'red';
                            result = false;
                    }else if(elementvalue < minvalue ||
                            elementvalue > maxvalue
                    ){
                            alert ('"' + elementid + '" must be between ' + minvalue + ' and ' + maxvalue);
                            document.getElementById(elementid).select();
                            document.getElementById(elementid).focus();
                            document.getElementById(elementid).style.background = 'red';
                            result = false;
                    }
            }

            return result;
    }

    function fnotidentical(elementid1, elementid2, ignoreifempty){
        if(isempty(ignoreifempty) || ignoreifempty == ''){
            ignoreifempty = 0;
        }
        
        var result = true;

        if(fiselement(elementid1) && fiselement(elementid2)){
            var elementvalue1 = document.getElementById(elementid1).value.trim(); 
            var elementvalue2 = document.getElementById(elementid2).value.trim(); 
            if(elementvalue1 == elementvalue2){
                if(ignoreifempty == 0 || elementvalue1 != ''){
                    alert('"' + elementid1 + '" cannot be the same as "' + elementid2 + '"');
                    document.getElementById(elementid2).select();
                    document.getElementById(elementid2).focus();
                    document.getElementById(elementid2).style.background = 'red';
                    result = false;
                }
            }
        }

        return result;
    }

    function fidentical(elementid1, elementid2){
            var result = true;

            if(fiselement(elementid1) && fiselement(elementid2)){
                    var elementvalue1 = document.getElementById(elementid1).value.trim(); 
                    var elementvalue2 = document.getElementById(elementid2).value.trim(); 
                    if(elementvalue1 != elementvalue2){
                            alert('"' + elementid1 + '" must be the same as "' + elementid2 + '"');
                            document.getElementById(elementid2).select();
                            document.getElementById(elementid2).focus();
                            result = false;
                    }
            }

            return result;
    }

    function fpasswordcheckifnotempty(elementid, minlength, maxlength, minvalue, maxvalue){
            var result = true;

            if(fiselement(elementid)){
                    var elementvalue = document.getElementById(elementid).value.trim();
                    if(elementvalue.length != 0){
                            result = fvalidatelength(elementid, minlength, maxlength);

                            if(result){
                                    result = fvalidatenumeric('tenantpin', minvalue, maxvalue);
                            }
                    }
            }

            return result;
    }

    function fpasswordcheck(elementid, minlength, maxlength){
            var result = false;

            if(fiselement(elementid)){
                    var elementvalue = document.getElementById(elementid).value.trim();

                    result = fvalidatelength(elementid, minlength, maxlength);
            }

            return result;
    }

    function fpasswordcheckreset(elementid1, elementid2, minlength, maxlength){
            var result = false;

            if(fiselement(elementid1) && fiselement(elementid2)){
                    result = fvalidatelength(elementid1, minlength, maxlength);
                    if(result){
                            result = fidentical(elementid1, elementid2);
                    }
            }

            return result;
    }

    function floginwithtestaccount(mobile, pin){
            if(fiselement('mobile')){
                    document.getElementById('mobile').value = mobile;
            }

            if(fiselement('pin')){
                    document.getElementById('pin').value = pin;
            }
    }

    function replaceAll(txt, replace, with_this) {
      return txt.replace(new RegExp(replace, 'g'),with_this);
    }

    function rollTidOver(meter_id, account_id, user_id)
    {
        if (confirm('Are you aware of the Process of entering the TID tokens for account (' + account_id +')?')) {
                // 1502
                if (confirm('Have you used all previous credit tokens bought or generated?')) { 
                        // 1503
                        if (confirm('Are you sure you want to proceed with the changes? Remember to enter the tokens in the correct sequence.')) { 
                                // 1504 - submit to generate kct & test token
                                $.ajax({
                                        type: "POST",
                                        url: '221.generate_tokens.php?meter_id='+ meter_id +'&user_id='+ user_id +'&token='+ $('#urltoken').val(),
                                        beforeSend: function() {
                                                $("#imgSpinner1").show();
                                        },
                                        complete: function() {
                                                $("#imgSpinner1").hide();
                                        },
                                        success: function(response){
                                                location.reload(); 
                                        },
                                        error: function(xhr, status, error){
                                            console.log(response);
                                            console.error(xhr);
                                        }
                                    });
                        }
                }
        } else {
                confirm('Test Department to provide Link <a href="https://www.youtube.com/watch?v=JH_xSzcdrZE" target="_blank">Watch Here</a>.')
        }
    }