import QtQuick 2.0
import QtQuick.Dialogs 1.2
import QtQuick.Controls 1.2
import QtQuick.LocalStorage 2.0 as Sql
import "qrc:/js/news.js" as Newsjs
import "qrc:/js/helper.js" as Helperjs

Item {
   property string newstabStatus:"news"

    function showNews(newsToShow){
       newsBusy.running=false;
       var currentTime= new Date();
       var msg = {'currentTime': currentTime, 'model': newsModel,'news':newsToShow};
       newsWorker.sendMessage(msg);
    }

    function onFriendsMessages(friend){print(" Friend "+friend);
       newstabStatus="friendmessage";
       Newsjs.newsfromdb(db,root.login.username, function(dbnews){showNews(dbnews)},friend)
    }

    function onDirectMessage(friend){
        print(root.login.server);
        newsStack.push({item:"qrc:/qml/MessageSend.qml",properties:{"reply_to_user": friend,"directmessage":1,"login":root.login}});
    }

   function  cleanNews(database){
        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);
                var newscountrs = tx.executeSql('SELECT COUNT(*) from news');
                var newscount = newscountrs.rows.item(0);
                if (newscount>maxnews){var lastvalidtimers= tx.executeSql('select created_at from news ORDER BY created_at DESC LIMIT ' +(newscount-maxnews));
                    var lastvalidtime=lastvalidtimers.rows.item(-1);
                    var deleters = tx.executeSql('DELETE from news WHERE created_at<'+lastvalidtime)}
        });
        Qt.quit()
    }

   StackView{
       id: newsStack
       anchors.fill:parent
       focus: true
       Keys.onReleased: if (event.key === Qt.Key_Back && stackView.depth > 1) {
                        stackView.pop(); event.accepted = true;
                    }
   initialItem:Rectangle {
        y:1
        color: "white"
        width:root.width-2*mm
        height:root.height-8*mm

        ComboBox{
        y:mm
        width: 8*mm
        model: ListModel{
            id: cbModel
            ListElement{text: qsTr("News")}
            ListElement{text: qsTr("Favorites")}
           }
        onCurrentIndexChanged:{
            if (currentIndex==0){newsModel.clear();
                Newsjs.newsfromdb(root.db,root.login.username, function(dbnews){
                showNews(dbnews)
                })}
            else if (currentIndex==1){
                newsBusy.running=true;
                Newsjs.requestFavorites(root.login,db,root,function(news){
                    JSON.stringify("Favorites: "+news);
                    Newsjs.storeNews(root.login,root.db,news,root,function(){
                        Newsjs.favoritesfromdb(db,root.login.username,function(newsarray){
                                            JSON.stringify("FavoritesArray: "+newsarray);showNews(newsarray)
                            
                        });
                    }
                )})
            }
        }}

        Button {
            id: newMessageButton
            text: qsTr("+")
            anchors.top: parent.top
            anchors.right: parent.right
            onClicked: {
               var groups=[];
                Helperjs.readData(root.db,"groups",root.login.username,function(groupobject){
                   groups=groupobject});
                Helperjs.readData(root.db,"contacts",root.login.username,function(friends){
                   newsStack.push({item:"qrc:/qml/MessageSend.qml",properties:{"contacts": friends,"login":root.login}})
               },"isFriend",1);
            }
        }
        Button {
            id: quitButton
            text: qsTr("Quit")
            anchors.top: parent.top
            anchors.right: newMessageButton.left
            onClicked: {cleanNews(root.db)}
        }

        Component {  id:footerComponent
            Rectangle{
                border.color: "#EEEEEE"
                border.width: 1
                 width:parent.width
                 height:6*mm
                 Text{
                     font.pixelSize: 1.5*mm
                     anchors.centerIn: parent
                    text:qsTr("More")
                 }
                 MouseArea{anchors.fill:parent
                     onClicked:{
                      var currentTime= new Date();
                      if(newstabStatus=="news"){
                            var lastnews_id=newsModel.get(newsModel.count-1).newsitemobject.created_at;
                            Newsjs.newsfromdb(root.db,root.login.username, function(news){
                          var msg = {'currentTime': currentTime, 'model': newsModel,'news':news,'appendnews':true};
                          newsWorker.sendMessage(msg);
                          },false,lastnews_id)}
                      else if(newstabStatus=="friendmessage"){
                          Newsjs.newsfromdb(root.db,root.login.username, function(news){
                            var msg = {'currentTime': currentTime, 'model': newsModel,'news':news,'appendnews':true};
                            newsWorker.sendMessage(msg);
                            },newsModel.get(newsModel.count-1).newsitemobject.uid,newsModel.get(newsModel.count-1).newsitemobject.created_at)}
                      }}
                  }
        }
        ListView {
          id: newsView
          anchors.fill: parent
          anchors.topMargin: 8*root.mm
          anchors.leftMargin: 3*root.mm; anchors.rightMargin: root.mm
          anchors.bottomMargin: 1*root.mm
          clip: true
          spacing: 0
          footer: footerComponent
          model: newsModel
          delegate: Newsitem{}
          }

       ListModel{id: newsModel}

       WorkerScript {
              id: newsWorker
              source: "qrc:/js/newsworker.js"
          }

       Button {
            id: update
            anchors.top: parent.top
            anchors.right: quitButton.left
            text: "Update"
            onClicked: { //try{newsModel.clear()} catch(e){}
                newsBusy.running=true;
                root.contactLoadType="news";
                Newsjs.getFriendsTimeline(login,db,contactlist,newstab,function(ns,nc){
                    root.news=ns;root.newContacts=nc;root.currentContact=0;
                    if (ns.length==0){
                        Newsjs.getDirectMessage(root.login,root.db,root,function(dbnews){showNews(dbnews)});
                        newsBusy.running=false}
                })}
        }
       BusyIndicator{
         id: newsBusy
          anchors.centerIn:update
         //anchors.right: update.left
         //anchors.top:parent.top
         width:7*mm
         height: 7*mm
       }
    Component.onCompleted: {
       root.messageSignal.connect(onFriendsMessages);
       root.directmessageSignal.connect(onDirectMessage);
       root.newsSignal.connect(showNews);
       try{newsModel.clear()} catch(e){}
        Newsjs.newsfromdb(root.db,root.login.username, function(dbnews){
            showNews(dbnews)
            })
        }
    }
}
}