//===========================================
//  Lumina-desktop source code
//  Copyright (c) 2017, Ken Moore
//  Available under the 3-clause BSD license
//  See the LICENSE file for full details
//===========================================
#include "RootDesktopObject.h"
#include <QQmlEngine>
#include <QApplication>
#include <QScreen>

#include <QDebug>

// === PUBLIC ===
RootDesktopObject::RootDesktopObject(QObject *parent) : QObject(parent){
  updateScreens(); //make sure the internal list is updated right away
}

RootDesktopObject::~RootDesktopObject(){

}

void RootDesktopObject::RegisterType(){
  qmlRegisterType<RootDesktopObject>("Lumina.Backend.RootDesktopObject", 2, 0, "RootDesktopObject");
  //Also register any types that are needed by this class
  ScreenObject::RegisterType();
}

RootDesktopObject* RootDesktopObject::instance(){
  static RootDesktopObject* r_obj = new RootDesktopObject();
  return r_obj;
}

//QML Read Functions
QStringList RootDesktopObject::screens(){
  qDebug() << "Request Screens:" << s_objects.length();
  QStringList names;
  for(int i=0; i<s_objects.length(); i++){ names << s_objects[i]->name(); }
  return names;
}

ScreenObject* RootDesktopObject::screen(QString id){
  qDebug() << "Got Screen Request:" << id;
  for(int i=0; i<s_objects.length(); i++){
    if(s_objects[i]->name()==id){ return s_objects[i]; }
  }
  return 0;
}

void RootDesktopObject::logout(){
  emit startLogout();
}

void RootDesktopObject::lockscreen(){
  emit lockScreen();
}

void RootDesktopObject::mousePositionChanged(){
  emit mouseMoved();
}

// === PUBLIC SLOTS ===
void RootDesktopObject::updateScreens(){
  QList<QScreen*> scrns = QApplication::screens();
  QList<ScreenObject*> tmp; //copy of the internal array initially
  for(int i=0; i<scrns.length(); i++){
    bool found = false;
    for(int j=0; j<s_objects.length() && !found; j++){
      if(s_objects[j]->name()==scrns[i]->name()){ found = true; tmp << s_objects.takeAt(j); }
    }
    if(!found){ tmp << new ScreenObject(scrns[i], this); }
  }
  //Delete any leftover objects
  for(int i=0; i<s_objects.length(); i++){ s_objects[i]->deleteLater(); }
  s_objects = tmp;
  emit screensChanged();
  for(int i=0; i<s_objects.length(); i++){
    s_objects[i]->emit geomChanged();
  }
}

void RootDesktopObject::ChangeWallpaper(QString screen, QString value){
  for(int i=0; i<s_objects.length(); i++){
    if(s_objects[i]->name()==screen){ s_objects[i]->setBackground(value); break; }
  }
}

// === PRIVATE ===