var CounterRefresh = 0

function DtAjax()
{
    var dt = new Date();
    return 'time=' + dt.getTime().toString()
}

var RqObj
var RqFn
var RqLk
var RqProc = false
var RqFinished = true
var RqConnect = true

function goCmdAjax(fReturn, ajMethod, ajUrl, ajBody, ajHeaders)
{

    RqFinished = false;

    try {
        RqObj = new XMLHttpRequest();
    }
    catch (e) {
        RqObj = null;
        return false;
    }

    RqFn = fReturn
    RqLk = ajUrl

    ajxUrl = ajUrl

    //if (ajxUrl.indexOf('?') != -1) { ajxUrl += "&" } else { ajxUrl += "?" }
    //ajxUrl += "View=emb&Con=Ajx"


    //http_request = new XMLHttpRequest();
    //http_request.overrideMimeType("text/xml"); //Método GET
    //http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=iso-8859-1'); //Método POST


    // Remove as possibilidades de pegar arquivos do cache
    //http_request.setRequestHeader("Cache-Control", "no-store, no-cache, must-revalidate");
    //http_request.setRequestHeader("Cache-Control", "post-check=0, pre-check=0");
    //http_request.setRequestHeader("Pragma", "no-cache");


    // Função para a resposta
    RqObj.onreadystatechange = ReturnCmdAjax

    RqObj.onerror = function () {

        RqFinished = true;

        RqConnect = false;
        setTimeout('RqConnect = true', 90 * 1000);

        ShowMsg(3, 'Erro de conexão com o Web Service.');

    };


    // Solicitação
    RqObj.open(ajMethod, ajxUrl, true);


    //if (ajMethod == 'POST') { RqObj.setRequestHeader('Content-Type', 'application/json'); RqObj.setRequestHeader('Data-Type', 'JSON'); }
    if ((ajMethod == 'POST') && (ajHeaders == null))
    { RqObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); }


    if (ajHeaders != null) {
        for (aHe of ajHeaders) {
            RqObj.setRequestHeader(aHe[0], aHe[1]);
        }
    }


    try {
        RqObj.send(ajBody);
    }
    catch (e) {
        RqFinished = true;
        ShowMsg(3, 'Erro de comunicação', 'Não foi possível acesso ao servidor web.');
    }


    //document.body.style.cursor = 'wait';
    RqProc = true


    if (fReturn != null)
    if ((ajBody == null) || ((ajBody != null) && (ajBody != 'silence')))
        WaitAjax()


    return RqObj;


    /*
// 1. Create a new XMLHttpRequest object
let xhr = new XMLHttpRequest();

// 2. Configure it: GET-request for the URL /article/.../load
xhr.open('GET', '/article/xmlhttprequest/example/load');

// 3. Send the request over the network
xhr.send();

// 4. This will be called after the response is received
xhr.onload = function() {
if (xhr.status != 200) { // analyze HTTP status of the response
alert(`Error ${xhr.status}: ${xhr.statusText}`); // e.g. 404: Not Found
} else { // show the result
alert(`Done, got ${xhr.response.length} bytes`); // response is the server
}
};

xhr.onprogress = function(event) {
if (event.lengthComputable) {
alert(`Received ${event.loaded} of ${event.total} bytes`);
} else {
alert(`Received ${event.loaded} bytes`); // no Content-Length
}

};

xhr.onerror = function() {
alert('Request failed');
};
     */
}


function ReturnCmdAjax() {
    // Status Atual
    switch (RqObj.readyState) {
        case 1:
            //A carregar
            break;
        case 2:
            //Carregando
            break;
        case 3:
            //Interactivo
            break;
        case 4:
            //Completo

            RqProc = false
            UnWaitAjax()
            //RqFn(RqObj.responseText)
            ReturnWs(RqObj.responseText, RqFn)

            // Status do Pedido
            switch (RqObj.status) {
                case 200:
                    //Tudo OK
                    //http_request.responseText - devolver a resposta do servidor como uma linha de texto 
                    //http_request.responseXML - devolver a resposta do servidor como um objecto XMLDocument que pode percorrer usando as funções DOM de JavaScript. 
                    //document.body.style.cursor = '';

                    //RqLk = RqLk.replace('View=emb&', '')
                    //RqLk = RqLk.replace('Con=Ajx&', '')

                    //RqLk = RqLk.replace('View=emb', '')
                    //RqLk = RqLk.replace('Con=Ajx', '')

                    //if (RqLk.substr(-1,1) == '?') { RqLk = RqLk.replace('?', '') }

                    //const stateObj = { foo: 'bar' };
                    //history.replaceState(stateObj, document.title, RqLk);


                    break;

                case 404:
                    //Página Não Encontrada
                    //alert('A página solicitada pelo AJAX não foi encontrada')
                    break;

                case 500:
                    //Erro de processamento no Servidor
                    //alert('A página solicitada pelo AJAX contém erro de processamento no servidor')
                    break;
            }

            break;
    }

    RqFinished = true;

}

function WaitAjax() {

    blackColor = false;

    if ((typeof (document.all.cssLinkTag) !== 'undefined')) {
        if (document.all.cssLinkTag[0])
            if (document.all.cssLinkTag[0].href.indexOf('black') > -1)
                blackColor = true;

        if (document.all.cssLinkTag[1])
            if (document.all.cssLinkTag[1].href.indexOf('black') > -1)
                blackColor = true;
    }


    TxWait = "<div id='WaitAj' style='position: fixed; top:0px; left:0px; width: 100%; height: 100%; z-index: 20; cursor: wait' onclick='UnWaitAjax()'>"

    TxWait += "<table width='100%' height='100%' cellpadding='0' cellspacing='0'><tr><td valign='bottom' align='right'>"

    TxWait += "<table width='' height='' style='background-color: "

    if (blackColor === true)
        TxWait += "rgba(20, 20, 20, 1); "
    else
        TxWait += "rgba(220, 220, 220, 1); "

    TxWait += "border-radius: 10px 0px 0px 0px'><tr>"
    TxWait += "<td style='padding: 6px 0px 6px 6px'><img src='/imgs/LoadingAppleMin.png' height='20'></td><td style='font-family: Arial; font-size: 14px; padding: 10px 10px 6px 0px"

    if (blackColor === true)
        TxWait += "; color: #666666; "

    TxWait += "'>Processando, por favor aguarde...</td>";
    TxWait += "</tr></table>"

    TxWait += "</td></tr></table>"

    TxWait += "</div>";
    //alert(TxJan)

    document.body.insertAdjacentHTML('afterBegin', TxWait);
}

function UnWaitAjax() {

    if (typeof document.all.WaitAj !== 'undefined') {
        if (typeof document.all.WaitAj[0] !== 'undefined') {
            for (lcuwa = 0; lcuwa <= 3; lcuwa++) {
                if (typeof document.all.WaitAj[lcuwa].parentNode !== 'undefined') {
                    document.all.WaitAj[lcuwa].parentNode.removeChild(document.all.WaitAj[lcuwa]);
                }
            }
        }
    }

    if (typeof document.all.WaitAj !== 'undefined') {
        if (typeof document.all.WaitAj.parentNode !== 'undefined') {
            document.all.WaitAj.parentNode.removeChild(document.all.WaitAj);
        }
    }

}




async function AJAXSubmit(oFormElement, oResultName) {


    var resultElement = oFormElement.elements.namedItem(oResultName);
    const formData = new FormData(oFormElement);


    var postHeaderAjx = new Headers();

    /*--------------not store it anymore
    if ((typeof (us) !== 'undefined') && (typeof (pw) !== 'undefined')) {
        postHeaderAjx.append('ans-usr', us);
        postHeaderAjx.append('ans-pwd', pw);
    }--------------not store it anymore
    */



    try {

        const response = await fetch(oFormElement.action, {
            method: 'POST',
            headers: postHeaderAjx,
            body: formData
        });


        if (response.ok) {
            //alert('Arquivo recebido com sucesso.')
            //window.location.href = '/';
            RqObj = response;

            data = await response.text();
            ReturnWs(data, null)
        }

        if (resultElement != null)
            resultElement.value = 'Result: ' + response.status + ' ' +
                response.statusText;

    } catch (error) {
        if (resultElement != null)
            resultElement.value = 'Error: ' + error;
        else
            console.log('Error: ' + error);
    }

}







function ReturnWs(content, postFunction) {


    var ShowMsgDialog = true;
    if (RqObj.getResponseHeader) {
        if (RqObj.getResponseHeader('MsgDialog')) {
            if (RqObj.getResponseHeader('MsgDialog') == 'none') {
                ShowMsgDialog = false;
            }
        }
    }



    if (RqObj.status != '') {
        RqConnect = true;
        if (RqObj.status != 200)
            if (ShowMsgDialog)
                return ShowMsg(3, 'Erro ao processar sua solicitação.');
    }


    if (RqObj.status == '') {
        if (RqConnect) {
            RqConnect = false;
            setTimeout('RqConnect = true', 90 * 1000);
            return ShowMsg(3, 'Ocorreu algum erro de comunicação com o servidor web.');
        }
        return;
    }

    //if ((content == null) || (content == ''))
    //return ShowMsg(3, 'Ocorreu algum erro ao retornado o conteúdo do webservice.'); 

    //while (content.indexOf('\\u0022') > -1)
    //content = content.replace('\\u0022', "\"")

    //mContent = content.replace(/\\u0022/gi, '\\"')



    /*
    if (RqObj.getResponseHeader) {
        if (RqObj.getResponseHeader('Content-Type')) {
            if (RqObj.getResponseHeader('Content-Type').indexOf('application/json') == -1) {
                if (postFunction) { postFunction(content); } return;
            }
        }
    }
    */


    let ls;
    var isJson = false;

    try {
        ls = JSON.parse(content);
        isJson = true;
    } catch (e) {
        isJson = false;
    }


    if (typeof CheckBtDebug !== 'undefined')
        CheckBtDebug();


    if (isJson)
        if (!CheckRespWs(ls)) {
            return false;
        }


    if (postFunction)
        postFunction(isJson ? ls : content);

}




var SaveLastData
function CheckRespWs(js) {

    SaveLastData = null
    if (js.hasOwnProperty('Debug')) {
        if (js['Debug'] != null) {
            if (js['Debug'].length > 0) {
                if (document.all.btActDebug) {
                    SaveLastData = js;
                    if (Get_Cookie('iAdminDebugViewer') == 'yes')
                        OpenJsonDebugger(js)
                    else if (js['Code'])
                        if ((js['Code'] != 1) && (js['Code'] != 4))
                            OpenJsonDebugger(js)
                }
            }
        }
    }

    CleanValidate();

    if (js == null)
        return ShowMsg(2, 'Nenhum registro foi retornado.');

    else if (js.length == 0)
        return ShowMsg(2, 'Nenhum registro foi encontrado.');


    else if ((js.hasOwnProperty('Code')) && (js['Code'] == 4)) {
        ProcessValidate(js);
        return ShowMsg(4, js['Title'], js['Descr']);
    }

    else if ((js.hasOwnProperty('Code')) && (!js.hasOwnProperty('Title')) && (js.hasOwnProperty('Descr')))
        return ShowMsg(js['Code'], js['Descr']);

    else if ((!js.hasOwnProperty('Code')) && (!js.hasOwnProperty('Title')) && (js.hasOwnProperty('Descr')))
        return ShowMsg(0, js['Descr']);

    else if ((js.hasOwnProperty('Code')) && (js.hasOwnProperty('Title')) && (js.hasOwnProperty('Descr')))
        return ShowMsg(js['Code'], js['Title'], js['Descr']);


    //if (typeof(js['Code']) !== 'undefined') {
    //return ShowMsg(js['Code'], js['Title'], js['Descr']);
    //}


    /*
if (js['Code'] == 2)
    if (js['Descr'])
        return ShowMsg(2, js['Title'], js['Descr']);
    else
        return ShowMsg(2, 'Opsss, algo aconteceu.', js['Title']);

if (js['Code'] == 3)
    if (js['Descr'])
        return ShowMsg(3, js['Title'], js['Descr']);
    else
        return ShowMsg(3, 'Opsss, tivemos um problema.', js['Title']);

if (js['Code'] == 4) {
    ProcessValidate(js);
    return ShowMsg(4, js['Title'], js['Descr']);
}
*/

    return true;

}



function isValidJSON(str)
{
    try {
        JSON.parse(str);
        return true;
    } catch (e) {
        return false;
    }
}