//.pragma library
.import QtQuick.LocalStorage 2.0 as Sql
.import "qrc:/js/helper.js" as Helperjs
.import "qrc:/js/news.js" as Newsjs

// IMAGE FUNCTIONS

function requestList(login,database,rootwindow,callback) {
    //get list of own images and call download function
    Helperjs.friendicaRequest(login,"/api/friendica/photos/list", rootwindow,function (helperobject){
   //print("return"+helperobject);
   var obj=JSON.parse(helperobject);
   Helperjs.readField("id",database,"imageData",login.username,function(AllStoredImages){
        if (AllStoredImages.length>0){
        for(var i=0;i< AllStoredImages.length;i++){
            var position=Helperjs.inArray(obj,"resourceID",AllStoredImages[i]);
            if (position>-1){obj.splice(position,1)}
                    //obj.splice(obj.indexOf(AllStoredImages[i]),1);// list of objects instead of list!!!
         }}
      callback(obj)
    })
})}

function dataRequest(login,photoID,database,rootwindow) {
    // check if image exist and call download function
    Helperjs.friendicaRequest(login,"/api/friendica/photo?photo_id="+photoID, rootwindow, function (image){
        try{ if(image==""){currentimageno=currentimageno+1}else{
            var obj = JSON.parse(image);
            var helpfilename=obj.filename.substring(0,obj.filename.lastIndexOf("."));
            var filesuffix="";
            if (obj.type=="image/jpeg"){filesuffix=".jpg"}
            else if (obj.type=="image/png"){filesuffix=".png"}
            else {filesuffix=""}
            if (helpfilename==""){// check if file has any filename
                obj.filename=obj["id"]+filesuffix;
            }
            else{obj.filename=helpfilename+filesuffix}
            var link="";
            if(obj["link"][0]){link=obj["link"][0]} else{link=obj["link"]["4"]}
            xhr.setUrl(Qt.resolvedUrl(link));
            xhr.setFilename(login.imagestore+'albums/'+obj.album+"/"+obj["filename"]);
            xhr.setDownloadtype("picture");
            xhr.download();
            var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
            db.transaction( function(tx) {
               var result = tx.executeSql('SELECT * from imageData where id = "'+obj["id"]+'"');
               if(result.rows.length === 1) {// use update
               result = tx.executeSql('UPDATE imageData SET username ="' +login.username+ '",id="'+obj.id+'", created="'+obj.created+'", edited="'+obj.edited+'", profile="'+obj.profile+'", link="'+obj["link"]["4"]+'", filename="'+obj.filename+'",title="'+obj.title+'", desc="'+obj.desc+'",   type="'+obj.type+'", width="'+obj.width+'", height="'+obj.height+'", album="'+obj.album+'", location="file://'+login.imagestore+'albums/'+obj.album+'/" where id="'+obj["id"]+'"');
               } else {// use insert print('... does not exists, create it')
               result = tx.executeSql('INSERT INTO imageData VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?)', [login.username,obj.id,obj.created,obj.edited, obj.title, obj.desc, obj.album, obj.filename, obj.type, obj.height, obj.width,obj. profile,obj["link"]["4"],'file://'+login.imagestore+'albums/'+obj.album+"/"]);
               }
           })}}
           catch (e){print("Data retrieval failure! "+ e+obj);}
})}


function deleteImage(database,login,type,location,rootwindow,callback) { // delete image locally and on server
    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
    //print(' delete Image Data() for ' + location)
    var rsfilename=location.substring(location.lastIndexOf("/")+1,location.length);
    var rslocation=location.substring(0,location.lastIndexOf("/")+1);
    print(type+" Name "+ rsfilename+" Location: "+rslocation)
    db.transaction( function(tx) {
        if (type=='image'){
            var rs= tx.executeSql('SELECT * FROM imageData WHERE filename="'+rsfilename+'" AND location="'+rslocation+'"')
            print(rs.rows.item(0).id)  //);
            var imageId=rs.rows.item(0).id;
            Helperjs.friendicaPostRequest(login,"/api/friendica/photo/delete?photo_id="+imageId,"","DELETE",rootwindow, function (obj){
                var deletereturn = JSON.parse(obj); print(obj);
                if (deletereturn.result=="deleted"){
                        db.transaction( function(tx) {
                            var deleters=tx.executeSql('DELETE  FROM imageData WHERE location="'+rslocation+'" AND filename="'+rsfilename+'"'); });
                            filesystem.Directory=rslocation.substring(7,rslocation.length-1);
                            filesystem.rmFile(rsfilename)
           }})
        }
        else{
            Helperjs.friendicaPostRequest(login,"/api/friendica/photoalbum/delete?album="+rsfilename,"","DELETE",rootwindow, function (obj){
                    print(" Return "+ obj);
                var deletereturn = JSON.parse(obj);
                if (deletereturn.result=="deleted"){ 
                    db.transaction( function(tx) {
                        var rs= tx.executeSql('SELECT DISTINCT location FROM imageData WHERE album="'+rsfilename+'" AND username="'+login.username+'"');
                        var locationstring=rs.rows.item(0).location;
                        filesystem.Directory=locationstring.substring(7,locationstring.length-1);
                        filesystem.rmDir();
                        var deleters=tx.executeSql('DELETE  FROM imageData WHERE album="'+location+'"');
                    })
               }
           })
        }
        callback(location)
    })
}

function deleteContacts(database,user,callback) { // does nothing useful at the moment
    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
    //print(' delete Image Data() for ' + field +"="+selection)
    db.transaction( function(tx) {
        result1= tx.executeSql('SELECT * FROM contacts a LEFT OUTER JOIN news b ON  a.url==b.uid');
result2= tx.executeSql('SELECT * FROM contacts a LEFT OUTER JOIN news b ON  a.url==b.uid');



    callback(result)})
}
function requestFriendsAlbumPictures(login,friend,rootwindow,callback){
// screenscraping of albums page of contact without user and password
    Helperjs.friendicaWebRequest(friend.url.replace("profile","photos"),rootwindow,function(photohtml){
    //print(photohtml);
    var photoarray=[];
    var arr = photohtml.split("sidebar-photos-albums-li");
    for (var i=2;i<arr.length;i++){
        var albumlink = arr[i].substring(arr[i].indexOf('http'),arr[i].indexOf('class')-2);
        var albumname=arr[i].substring(arr[i].indexOf('/span')+6,arr[i].indexOf('</a>')-1);
        var album={'link':albumlink,'name':albumname}
      photoarray.push(album);
    }
    callback(photoarray)
 })
}

function requestFriendsPictures(link,rootwindow,callback){
// screenscraping of pictures page for given album
    Helperjs.friendicaWebRequest(link,rootwindow,function(photohtml){
    var photoarray=[];
     var basehtml=photohtml.substring(photohtml.indexOf('<base')+12,photohtml.indexOf('/>',photohtml.indexOf('<base'))-2);
       
// old theme
   if (photohtml.indexOf("photo-album-image-wrapper-end")>-1){ //theme 1
   var arr = photohtml.split("photo-album-image-wrapper-end");}

// other themes
   if (photohtml.indexOf("photo-album-wrapper")>-1){ //theme 2
        var photoarea=photohtml.substring(photohtml.indexOf("photo-album-wrapper"),photohtml.indexOf("photo-album-end"))
       var arr = photoarea.split("</a>");}

    for (var i=0;i<arr.length-1;i++){
        var photoname=arr[i].substring(arr[i].lastIndexOf('alt')+5,arr[i].lastIndexOf('title')-2);
        var thumblink=arr[i].substring(arr[i].lastIndexOf('<img')+10,arr[i].lastIndexOf('alt')-2);
        var imagetype=thumblink.substring(thumblink.lastIndexOf("."));
        var photolink=thumblink.substring(0,thumblink.length-imagetype.length-2)+"-0"+imagetype
        if(thumblink.substring(0,4)!=="http"){thumblink=basehtml+thumblink}
        if(photolink.substring(0,4)!=="http"){photolink=basehtml+photolink}
        var photo={'link':photolink,'name':photoname,'thumb':thumblink}
      photoarray.push(photo);
    }
    callback(photoarray)
    })
}

// CONFIG FUNCTIONS

function initDatabase(database) { // initialize the database object
    var db =Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
            print('initDatabase()'+database[0]+database[1]+database[2]+database[3])
    db.transaction( function(tx) {
        tx.executeSql('CREATE TABLE IF NOT EXISTS imageData(username TEXT,id INT, created TEXT,edited TEXT, title TEXT, desc TEXT, album TEXT,filename TEXT, type TEXT, height INT, width INT, profile INT, link TEXT,location TEXT)');
        tx.executeSql('CREATE TABLE IF NOT EXISTS config(server TEXT, username TEXT, password TEXT, imagestore TEXT, maxnews INT, timerInterval INT, newsViewType TEXT,isActive INT, permissions TEXT,maxContactAge INT,APIVersion TEXT,layout TEXT, addons TEXT)');
        tx.executeSql('CREATE TABLE IF NOT EXISTS news(username TEXT, messagetype INT, text TEXT, created_at INT, in_reply_to_status_id INT, source TEXT, status_id INT, in_reply_to_user_id INT, geo TEXT,favorited TEXT, uid INT, statusnet_html TEXT, statusnet_conversation_id TEXT,friendica_activities TEXT, friendica_activities_self TEXT, attachments TEXT, friendica_owner INT)');
        tx.executeSql('CREATE TABLE IF NOT EXISTS contacts(username TEXT, id INT, name TEXT, screen_name TEXT, location TEXT,imageAge INT, profile_image_url TEXT, description TEXT, profile_image BLOB, url TEXT, protected TEXT, followers_count INT, friends_count INT, created_at INT, favourites_count TEXT, utc_offset TEXT, time_zone TEXT, statuses_count INT, following TEXT, verified TEXT, statusnet_blocking TEXT, notifications TEXT, statusnet_profile_url TEXT, cid INT, network TEXT, isFriend INT, timestamp INT)');
        tx.executeSql('CREATE TABLE IF NOT EXISTS groups(username TEXT, groupname TEXT, gid INT, members TEXT)');
tx.executeSql('CREATE TABLE IF NOT EXISTS events(username TEXT, id INT, start INT, end INT, allday INT, title TEXT, j INT, d TEXT, isFirst INT, uid INT, cid INT, uri TEXT, created INT, edited INT, desc TEXT, location TEXT, type TEXT, nofinish TEXT, adjust INT, ignore INT, permissions TEXT, guid INT, itemid INT, plink TEXT, authorName TEXT, authorAvatar TEXT, authorLink TEXT, html TEXT)');
})}

function cleanPermissions(oldperms){
    var newperms=oldperms.replace("<","");newperms=newperms.replace(">","");newperms="["+newperms+"]";
    var newpermArray=JSON.parse(newperms);
return (newpermArray)
}

function getEvents(database,login,rootwindow,callback){
var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
    Helperjs.friendicaWebRequest(login.server+"/cal/"+login.username+"/json",rootwindow,function(obj){
    var events = JSON.parse(obj);
    db.transaction( function(tx) {
    for (var i=0;i<events.length;i++){
    var permissions=[];
    permissions.push(cleanPermissions(events[i].item.allow_cid));
    permissions.push(cleanPermissions(events[i].item.allow_gid));
    permissions.push(cleanPermissions(events[i].item.deny_cid));
    permissions.push(cleanPermissions(events[i].item.deny_gid));
    var result = tx.executeSql('SELECT * from events where username="'+login.username+'" AND id = '+events[i].id); // check for news id
    if(result.rows.length === 1) {// use update
        result = tx.executeSql('UPDATE events SET username="'+login.username+'", start="'+Date.parse(events[i].start)+'", end="'+Date.parse(events[i].end)+'", allday="'+Number(events[i].allday)+'", title="'+events[i].title+'", j="'+events[i].j+'", d="'+events[i].d+ '", isFirst="'+Number(events[i].isFirst)+'", uid="'+events[i].item.uid+'", cid="'+events[i].item.cid+'", uri="'+events[i].item.uri+'", created="'+ Date.parse(events[i].item.created)+'", edited="'+ Date.parse(events[i].item.edited)+'", desc="'+events[i].item.desc+'", location="'+events[i].item.location+'", type="'+events[i].item.type+'", nofinish="'+events[i].item.nofinish+'", adjust ="'+events[i].item.adjust+'", ignore="'+events[i].item.ignore+'", permissions="'+ JSON.stringify(permissions)+'", guid="'+events[i].item.guid+'", itemid="'+events[i].item.itemid+  '", plink="'+events[i].item.plink+  '", authorName="'+events[i].item["author-name"]+ '", authorAvatar="'+events[i].item["author-avatar"]+ '", authorLink="'+events[i].item["author-link"]+ '", html="'+Qt.btoa(events[i].html)+'" where username="'+login.username+'" AND id='+events[i].id);
    } else {// use insert
        result = tx.executeSql('INSERT INTO events (username,id,start,end,allday,title,j,d,isFirst,uid,cid,uri,created,edited,desc,location,type,nofinish,adjust,ignore,permissions,guid,itemid,plink,authorName,authorAvatar,authorLink,html) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)', [login.username, events[i].id, Date.parse(events[i].start), Date.parse(events[i].end), events[i].allday, events[i].title, events[i].j, events[i].d, events[i].isFirst, events[i].item.uid, events[i].item.cid, events[i].item.uri, Date.parse(events[i].item.created), Date.parse(events[i].item.edited), events[i].item.desc, events[i].item.location, events[i].item.type, events[i].item.nofinish, events[i].item.adjust, events[i].item.ignore, JSON.stringify(permissions), events[i].item.guid, events[i].item.itemid, events[i].item.plink, events[i].item["author-name"], events[i].item["author-avatar"], events[i].item["author-link"], Qt.btoa(events[i].html)])}
    callback()
    }
})})}

function newscount(database, callback){
    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
     db.transaction( function(tx) {
            var newscountrs = tx.executeSql('SELECT COUNT(*) from news');
            var newscount = newscountrs.rows.item(0)["COUNT(*)"];
            callback(newscount)
    })
}

function eventsfromdb(database, username,callback){
var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
    db.transaction( function(tx) {
    var eventrs=tx.executeSql('select * from events WHERE username="'+username+'" ORDER BY start ASC');
    var eventArray=[];
    var dayArray=[];
    for(var i = 0; i < eventrs.rows.length; i++) {
        eventArray.push(eventrs.rows.item(i));
       // eventArray[i]=fetchUsersForNews(database,username,newsArray[i])
        dayArray.push(Math.floor(eventrs.rows.item(i).start/86400000));
    }
    callback(eventArray,dayArray)});
}

function requestFriendsEvents(login,friend,rootwindow,callback){
// get calendar JSON  object of contact without user and password
    Helperjs.friendicaWebRequest(friend.replace("profile","cal")+"/json",rootwindow,function(calhtml){
    //print(calhtml);
    var eventarray=[];var eventdays=[];
    var events=JSON.parse(calhtml);
    for (var i=0;i<events.length;i++){
        var permissions=[];
        permissions.push(cleanPermissions(events[i].item.allow_cid));
        permissions.push(cleanPermissions(events[i].item.allow_gid));
        permissions.push(cleanPermissions(events[i].item.deny_cid));
        permissions.push(cleanPermissions(events[i].item.deny_gid));
    
        var event ={}
        event.start=Date.parse(events[i].start);event.end=Date.parse(events[i].end);
        event.allday=events[i].allday; event.title=events[i].title; event.j=events[i].j;
        event.d=events[i].d; event.isFirst=events[i].isFirst; event.uid=events[i].item.uid;
        event.cid=events[i].item.cid; event.uri=events[i].item.uri;
        event.created=Date.parse(events[i].item.created); event.edited=Date.parse(events[i].item.edited);
        event.desc=events[i].item.desc; event.location=events[i].item.location; event.type=events[i].item.type;
        event.nofinish=events[i].item.nofinish; event.adjust =events[i].item.adjust; event.ignore=events[i].item.ignore;
        event.permissions=JSON.stringify(permissions); event.guid=events[i].item.guid;
        event.itemid=events[i].item.itemid; event.plink=events[i].plink; event.authorName=events[i].item["author-name"];
        event.authorAvatar=events[i].item["author-avatar"]; event. authorLink=events[i].item["author-link"];
        event.html=Qt.btoa(events[i].html);
        eventarray.push(event);
//        var offsetTime = new Date().getTimezoneOffset() * 60 * 1000;print(new Date(event.start).toLocaleString()+"Zeitverschiebung:"+offsetTime)
//        var time = event.start - offsetTime;
        eventdays.push(Math.floor(event.start/(24*60*60*1000)))
    }
    //print(JSON.stringify(eventarray));
    callback(eventarray,eventdays)
 })
}


function savePermissions(database,obj) { // stores config to DB
 var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
 var permissions=JSON.stringify(obj)
 db.transaction( function(tx) {
    var result = tx.executeSql( 'UPDATE config SET permissions="'+permissions+'" WHERE username="'+obj.username +'"');
})
}

function storeConfig(database,obj) { // stores config to DB
 var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
 db.transaction( function(tx) {
     //print(JSON.stringify(obj));
     var result = tx.executeSql('SELECT * from config WHERE username="'+obj.username+'"');
     if(result.rows.length === 1) {// use update
        var result2 = tx.executeSql('UPDATE config SET server="'+obj.server+'",password="'+obj.password+'", imagestore="'+obj.imagestore+'", maxnews='+obj.maxnews+',  timerInterval='+obj.interval+', newsViewType="'+obj.newsViewType+'", isActive=0 WHERE username="'+obj.username +'"');
        var result3 = tx.executeSql('UPDATE config SET isActive=1 WHERE username !="'+obj.username +'"');
        var result4 = tx.executeSql('UPDATE config SET maxnews='+obj.maxnews);
      } else {// use insert print('... does not exists, create it')
        var result2 = tx.executeSql('INSERT INTO config VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?)', [obj.server, obj.username, obj.password, obj.imagestore, obj.maxnews, obj.interval,obj.newsViewType,0,"[[],[],[],[]]",0,"","",""]);
        var result3 = tx.executeSql('UPDATE config SET isActive=1 WHERE username !="'+obj.username +'"');
        var result4 = tx.executeSql('UPDATE config SET maxnews='+obj.maxnews);
        }
 })}

function showServerConfig(url,rootwindow,callback){//print(url);
Helperjs.friendicaWebRequest(url+"/api/statusnet/config",rootwindow, function (obj){
    var serverconfig = JSON.parse(obj);
    var serverConfigString="import QtQuick 2.0; import QtQuick.Dialogs 1.2; MessageDialog{ visible: true; title:'Server';standardButtons: StandardButton.Ok;text: 'Name: "+serverconfig.site.name+"\nLanguage: "+serverconfig.site.language+
                        "\nEmail: "+serverconfig.site.email+"\nTimezone: "+serverconfig.site.timezone+"\nClosed: "+serverconfig.site.closed+
                        "\nText limit: "+serverconfig.site.textlimit+"\nShort Url length: "+serverconfig.site.shorturllength+
                        "\nFriendica version: "+serverconfig.site.friendica.FRIENDICA_VERSION+"\nDFRN version: "+serverconfig.site.friendica.DFRN_PROTOCOL_VERSION +
                        "\nDB Update version: "+serverconfig.site.friendica.DB_UPDATE_VERSION+"'}";
    callback(serverConfigString)
})}


function getServerConfig(database,login,rootwindow,callback){
// check server with given credentials
try {Helperjs.friendicaRequest(login,"/api/statusnet/config",rootwindow, function (obj){
    var serverconfig = JSON.parse(obj);
    var serverconfigString="import QtQuick 2.0; import QtQuick.Dialogs 1.2; MessageDialog{ visible: true; title:'Server';standardButtons: StandardButton.Ok;text: 'SUCCESS! \nName: "+serverconfig.site.name+"\nLanguage: "+serverconfig.site.language+
                        "\nEmail: "+serverconfig.site.email+"\nTimezone: "+serverconfig.site.timezone+"\nClosed: "+serverconfig.site.closed+
                        "\nText limit: "+serverconfig.site.textlimit+"\nShort Url length: "+serverconfig.site.shorturllength+
                        "\nFriendica version: "+serverconfig.site.friendica.FRIENDICA_VERSION+"\nDFRN version: "+serverconfig.site.friendica.DFRN_PROTOCOL_VERSION +
                        "\nDB Update version: "+serverconfig.site.friendica.DB_UPDATE_VERSION+"'}";

    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
                db.transaction( function(tx) {
                    var result = tx.executeSql('UPDATE config SET APIVersion="'+ serverconfig.site.friendica.FRIENDICA_VERSION+'"   WHERE username="'+login.username +'"')})

    Helperjs.friendicaRequest(login,"/friendica/json",rootwindow, function (obj){
    var serverData = JSON.parse(obj);var serverAddons=JSON.stringify(serverData.plugins).replace(/"/g,"");
    db.transaction( function(tx) {
                    var result = tx.executeSql('UPDATE config SET addons="'+ serverAddons+'" WHERE username="'+login.username +'"')})

    callback(serverconfigString);
    })})}
catch (e){callback (e);
}}

function readConfig(database,callback,filter,filtervalue) { // reads config
    if (filter){var where = " WHERE "+ filter +" = '" + filtervalue+"'"} else { var where=""}
    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3],initDatabase(database));
    db.transaction( function(tx) {
        var tables = tx.executeSql("SELECT * FROM sqlite_master WHERE type='table'");
        if (tables.rows.length==0){print("no database");callback("")} else {
        var rs = tx.executeSql('select * from config'+where);
        var rsArray=[];
        if (rs.rows.length>0){
            for(var i = 0; i < rs.rows.length; i++) {
                rsArray.push(rs.rows.item(i))
            }
        var rsObject={server:rsArray[0].server,username:rsArray[0].username, password:rsArray[0].password,imagestore:rsArray[0].imagestore,maxnews:rsArray[0].maxnews,isActive:rsArray[0].isActive,timerInterval:rsArray[0].timerInterval, newsViewType:rsArray[0].newsViewType,permissions:JSON.parse(rsArray[0].permissions),maxContactAge:rsArray[0].maxContactAge,APIVersion:rsArray[0].APIVersion,addons:rsArray[0].addons};
            } else {var rsObject=""}
        callback(rsObject)}}
    )
}

function readActiveConfig(database){
  var obj;
  readConfig(database,function(config){obj=config},"isActive", 0);
  return obj;
}

function deleteConfig(database,userobj,callback) { // delete user data from DB
    if (userobj){var where = " WHERE username='"+ userobj.username+"' and server='"+userobj.server+"'";} else { return "no user selected!";}
    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
    if(!db) { return; }
    db.transaction( function(tx) {
        var rs = tx.executeSql('delete from config'+where);
    callback(rs);
    })
}

function  cleanNews(database,callback){
     var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
      db.transaction( function(tx) {
             var maxnewsrs = tx.executeSql("SELECT DISTINCT maxnews FROM config");
             var maxnews=maxnewsrs.rows.item(0).maxnews;
             var newscountrs = tx.executeSql('SELECT COUNT(*) from news');
             var newscount = newscountrs.rows.item(0)["COUNT(*)"];
             if (newscount>maxnews){
                 var lastvalidtimers= tx.executeSql('SELECT DISTINCT created_at FROM news ORDER BY created_at ASC LIMIT ' +(newscount-maxnews));
                 var lastvalidtime=lastvalidtimers.rows.item(newscount-maxnews-1).created_at;
                 var deleters = tx.executeSql('DELETE from news WHERE created_at<='+lastvalidtime)}
             callback()
     })
 }

function cleanContacts(login,database,callback){
    var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
    db.transaction( function(tx) {
        var oldestnewsrs= tx.executeSql('SELECT created_at FROM news WHERE username="'+login.username+'" AND messagetype=0 ORDER BY created_at ASC LIMIT 1');
        var oldestnewsTime=oldestnewsrs.rows.item(0).created_at-  604800000;  //contacts can be 7 days old
        print(login.username+" älteste news: "+ oldestnewsTime);
        var result = tx.executeSql('SELECT * from contacts WHERE username="'+login.username+'" AND isFriend=0 AND imageAge<'+oldestnewsTime); // check for friends
        for (var i=0;i<result.rows.length;i++){
            filesystem.rmFile(result.rows.item(i).profile_image);
            var deleters = tx.executeSql('DELETE from contacts WHERE username="'+login.username+'" AND url="'+result.rows.item(i).url+'"');
        }
        callback()
    })
}

function processNews(callback){
//    Newsjs.getCurrentContacts(login,db,function(contacts){
//        contactlist=contacts});

    if (contactLoadType=="news"){
        if(root.news.length==0){}
        else{// show news
            Newsjs.storeNews(login,db,news,root,function(dbnews){
            root.newsSignal(dbnews);
            newstab.newstabstatus=login.newsViewType
         })}
     }
     else if (contactLoadType=="friends"){// show friends
        root.friendsSignal(login.username);
        Newsjs.getCurrentContacts(login,db,function(contacts){
            contactlist=contacts;
        })}

      else if (contactLoadType=="conversation"){
        var conversationid=news[0].statusnet_conversation_id
        if (!isNaN(parseInt(conversationid))){//no directmessage conversation
            Newsjs.storeNews(root.login,root.db,news,root,function(){
                Newsjs.conversationfromdb(db,root.login.username,conversationid, function(newsarray){
                    newstab.conversation=newsarray;
                })
          })}
         else {newstab.conversation=news}//only DM conversations from database
       }
       else if (contactLoadType=="favorites"){//show favorited news
        Newsjs.storeNews(root.login,root.db,news,root,function(){
            Newsjs.favoritesfromdb(db,login.username,function(newsarray){
                root.newsSignal(newsarray);
                newstab.newstabstatus="Favorites";
            })
       })}
    callback()
}

function updateContactInDB(login,database,isFriend,contact){// for newstab and friendstab
//    var suffix=contact.profile_image_url.substring(contact.profile_image_url.lastIndexOf("."), contact.profile_image_url.length);
//    var imagename=login.imagestore+"contacts/"+contact.screen_name.trim()+suffix;
    
    var imagename="";
    contacttimer.restart();
    var currentTime=Date.now();
    var image_timestamp=0;
    if(contact.profile_image_url==""){root.currentContact=root.currentContact+1 }
    else{//print(JSON.stringify(contact))
        var db=Sql.LocalStorage.openDatabaseSync(database[0],database[1],database[2],database[3]);
        db.transaction( function(tx) {
            var currentts=0;
            var currenttsrs= tx.executeSql('SELECT timestamp FROM contacts WHERE username="'+login.username+'" AND url="'+contact.url+'"');
            try{currentts=currenttsrs.rows.item(0).timestamp}catch(e){}

            var imagename_helper=[];
            imagename_helper=contact.profile_image_url.split('?');//print("substring: "+JSON.stringify(imagename_helper)+imagename_helper[0].substring(imagename_helper[0].lastIndexOf("/")+1, imagename_helper[0].length))
            imagename=login.imagestore+"contacts/"+contact.screen_name+"-"+imagename_helper[0].substring(imagename_helper[0].lastIndexOf("/")+1, imagename_helper[0].length);
            try {parseInt(image_timestamp=imagename_helper[1].substring(imagename_helper[1].indexOf("ts=")+3,imagename_helper[1].length))} catch(e){};
            print(contact.screen_name+" Timestamp"+image_timestamp+" "+ new Date(parseInt(image_timestamp)*1000));
            if ((image_timestamp>currentts) || (image_timestamp==0)){
                xhr.setUrl(Qt.resolvedUrl(contact.profile_image_url));
                xhr.setFilename(imagename);
                xhr.setDownloadtype("contact");
                xhr.download();
            }
        var result;
        result = tx.executeSql('SELECT * from contacts where username="'+login.username+'" AND url = "'+contact.url+'"'); // check for news url
        if(result.rows.length === 1) {// use update
            result = tx.executeSql('UPDATE contacts SET  id='+contact.id+', name="'+Qt.btoa(contact.name)+'", screen_name="'+contact.screen_name+'", location="'+contact.location+'",imageAge='+currentTime+', profile_image_url="'+contact.profile_image_url+'", description="'+Qt.btoa(contact.description)+'", profile_image="'+imagename+'", protected="'+contact.protected+'", followers_count='+contact.followers_count+', friends_count='+contact.friends_count+', created_at="'+ Date.parse(Newsjs.cleanDate(contact.created_at))+'", favourites_count="'+contact.favorites_count+'", utc_offset="'+contact.utc_offset+'", time_zone="'+contact.time_zone+'", statuses_count='+contact.statuses_count+', following="'+contact.following+'", verified ="'+contact.verified+'", statusnet_blocking="'+contact.statusnet_blocking+'", notifications="'+contact.notifictions+'", statusnet_profile_url="'+contact.statusnet_profile_url+'", cid='+contact.cid+', network="'+contact.network+'", isFriend='+isFriend+', timestamp='+ image_timestamp+' where username="'+login.username+'" AND  url="'+contact.url+'"');
        } else {// use insert
        result = tx.executeSql('INSERT INTO contacts VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)', [login.username,contact.id,Qt.btoa(contact.name),contact.screen_name,contact.location,currentTime,contact.profile_image_url, Qt.btoa(contact.description),imagename,contact.url,contact.protected,contact.followers_count, contact.friends_count,Date.parse(Newsjs.cleanDate(contact.created_at)),contact.favorites_count,contact.utc_offset,contact.time_zone,contact.statuses_count,contact.following,contact.verfied,contact.statusnet_blocking,contact.notifications,contact.statusnet_profile_url,contact.cid,contact.network,isFriend,image_timestamp]);}
    });
}}