.pragma library
.import QtQuick.LocalStorage 2.0 as Sql

function friendicaRequest(login,api,rootwindow,callback) {
        var xhrequest= new XMLHttpRequest();
        xhrequest.onreadystatechange = function() {
        //print(api+JSON.stringify(login));
                if(xhrequest.readyState === XMLHttpRequest.DONE) {
                try{ if (xhrequest.responseText!=""){
                        callback(xhrequest.responseText)
                       }else{
                        showMessage("Error","API:" +api+"\n NO RESPONSE",rootwindow);
                        callback(xhrequest.responseText)
                    }
              }
               catch (e){
                     showMessage("Error", api+" "+e,rootwindow)
                }
            }
        }
        xhrequest.open("GET", login.server+api,true,login.username,Qt.atob(login.password));
        xhrequest.send();
    }

function friendicaPostRequest(login,api,rootwindow,callback) {
        var xhrequest= new XMLHttpRequest();
        xhrequest.onreadystatechange = function() {
            //print(api+JSON.stringify(login));
            if (xhrequest.readyState === XMLHttpRequest.HEADERS_RECEIVED) {
            } else if(xhrequest.readyState === XMLHttpRequest.DONE) {
                try{ if (xhrequest.responseText!=""){
                        callback(xhrequest.responseText)
                        }else{
                        showMessage("Error",api+" NO RESPONSE",rootwindow)
          callback(xhrequest.responseText)
                    }
              }
               catch (e){
                     showMessage("Error", api+" "+e,rootwindow)
}
            }
        }
        xhrequest.open("POST", login.server+api,true,login.username,Qt.atob(login.password));
        xhrequest.send();
    }



function friendicaWebRequest(url,rootwindow,callback) {
        var xhrequest = new XMLHttpRequest();
        xhrequest.onreadystatechange = function() {
            if (xhrequest.readyState === XMLHttpRequest.HEADERS_RECEIVED) {
            } else if(xhrequest.readyState === XMLHttpRequest.DONE) {
                try{ callback(xhrequest.responseText);
              }
               catch (e){
                 showMessage("Error",url+" "+e, rootwindow)
               }
            }
        }
        xhrequest.open("GET", url,true);
        xhrequest.send();
    }

function readData(database,table,username,callback,filter,filtervalue) { // reads and applies data from DB
 if (filter){
 var where = " AND "+ filter +" = '" + filtervalue+"'";
 } else { var where="";}
 if (username){
 var user = ' where username= "'+ username +'"';
 } else { var user='';}
 var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
 if(!db) { return; }
 db.transaction( function(tx) {
     //print('select * from '+table+user+where);
        var rsArray=[];
     var rs = tx.executeSql('select * from '+table+user+where);
     for(var i = 0; i < rs.rows.length; i++) {
         rsArray.push(rs.rows.item(i))
     }
     callback(rsArray);
 });
}

function readField(field,database,table, username, callback,filter,filtervalue) { // reads and applies data from DB
if (filter){
var where = " AND "+ filter +" = '" + filtervalue+"'";
} else { var where="";}
 var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
  if(!db) { return; }
 db.transaction( function(tx) {
    //print('... read from database ' + field)
    var rsArray=[];
    //print('select DISTINCT '+field+' from '+table+' WHERE username="'+username+'"'+where+' ORDER BY '+field+' ASC');
    var rs = tx.executeSql('select DISTINCT '+field+' from '+table+' WHERE username="'+username+'"'+where+' ORDER BY '+field+' ASC');
    for(var i = 0; i < rs.rows.length; i++) {
        rsArray.push(rs.rows.item(i)[field])
    }
    callback(rsArray);
 });
}

function showMessage(header,message,rootwindow){
    var cleanmessage=message.replace(/"/g,"-");
    var messageString='import QtQuick 2.0; import QtQuick.Dialogs 1.2; MessageDialog{ visible: true; title:"'+header+'";standardButtons: StandardButton.Ok; text:" '+cleanmessage+'"}';
    var messageObject=Qt.createQmlObject(messageString,rootwindow,"messageOutput");
}

function inArray(list, prop, val) {
    if (list.length > 0 ) {
        for (var i in list) { if (list[i][prop] === val) {
                return i;
            }
        }
    } return -1;
}
function cleanArray(array) {
var arraystring=JSON.stringify(array);
    arraystring=arraystring.replace(/[\[\]]/g , '');
return arraystring;
}