//
//  QGGetHelpVC.swift
//  QuoteGuru
//
//  Created by indianic on 25/05/17.
//  Copyright © 2017 indianic. All rights reserved.

import UIKit

class QGGetHelpVC: UIViewController,UIScrollViewDelegate,UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout{

    @IBOutlet weak var collViewPaging: UICollectionView!

    @IBOutlet weak var pageControl: UIPageControl!

    let viewNav = QGNavigationBarView()
    var arrImages = [String]()
    var timer = Timer()

    var objCompletionHandler: ((Int) -> Void)?
    var intGetLastPageno:Int!

    var boolIsCallFromOtherVC:Bool!

    @IBOutlet weak var constantColViewTop: NSLayoutConstraint!


    //MARK: view life cycle..
    override func viewDidLoad() {
        super.viewDidLoad()
         setUpUIView()

    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(true)

        timer = Timer.scheduledTimer(timeInterval: 10.0, target: self, selector: #selector(pagingAction), userInfo: nil, repeats: true)
     }

    func setUpUIView() {

        //View Navigation
        viewNav.addNavigation(sourceController: self)

        self.view.addSubview(viewNav)
        viewNav.isHidden = false
        viewNav.setNavProperties(navTitle:kHelp,navBgImage:"nav_bg",btnLeftTitle:"",btnRightFirstTitle:"",btnRightSecondTitle:"",btnLeftImg:"ic_home",btnRightFirstImg:"",btnRightSecondImg:"", strNotification: "", btnleftSecondTitle: "", btnleftSecondImg: "")
        viewNav.btnNavLeft.addTarget(self, action: #selector(btnHomeAction(sender:)), for: .touchUpInside)

//        arrImages = ["star.png","star (1).png","star.png","star (1).png","star.png","star (1).png","star.png","star (1).png"]
        intGetLastPageno = 0

        if IS_IPHONE{
            arrImages = QGGetHelpScreenUtility().arrIphoneHomeScreen(getNumber: 22, getVC: self)
        }
        else{
            arrImages = QGGetHelpScreenUtility().arrIpadHomeScreen(getNumber: 33, getVC: self)
        }

        let pageCount : CGFloat = CGFloat(arrImages.count)


        pageControl.numberOfPages = Int(pageCount)
        pageControl.addTarget(self, action: #selector(pageControlChanged(sender:)), for: .valueChanged)

        collViewPaging.showsHorizontalScrollIndicator = false
        collViewPaging.showsVerticalScrollIndicator = false
        boolIsCallFromOtherVC = false



        if boolIsCallFromOtherVC == false{
            constantColViewTop.constant = 64.0
        }
        else{
            constantColViewTop.constant = 0
        }

     }




    func callFromOtherVC(isScreenShown:Bool,getArrForScreen:[String],getVC:UIViewController,completionHandler:@escaping (Int) -> Void){

        boolIsCallFromOtherVC = true
        constantColViewTop.constant = 0

        viewNav.isHidden = true
        arrImages.removeAll()
        arrImages = getArrForScreen

        objCompletionHandler = completionHandler

         let pageCount : CGFloat = CGFloat(arrImages.count)
        pageControl.numberOfPages = Int(pageCount)

        collViewPaging.reloadData()

//        DispatchQueue.main.asyncAfter(deadline: .now() + 20.0) {
//            self.objCompletionHandler!(self.intGetLastPageno)
//        }


    }

    //MARK: - UICollectionview Datasource Delegate Methods

    public func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int{

            return arrImages.count

    }

    public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell{

            let aCellPaging : QGHelpCollViewCell = collectionView.dequeueReusableCell(withReuseIdentifier: "helpCellId", for: indexPath) as! QGHelpCollViewCell
            aCellPaging.imgViewPaging.image = UIImage(named:arrImages[indexPath.row])
            return aCellPaging

    }


    //MARK:- Collection view layout size for item at indexpath
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {

        return CGSize(width:collViewPaging.frame.size.width, height:collViewPaging.frame.size.height)
    }

   // MARK:- Button action
    //paging Action with timer
    func pagingAction()  {

        var pageWidth = CGFloat()
        pageWidth = collViewPaging.frame.size.width
        var contentOffsetNew = CGFloat()
        contentOffsetNew = collViewPaging.contentOffset.x
        let value1 = contentOffsetNew
        let value2 = pageWidth
        let value3 = CGFloat(value1)/value2
        pageControl.currentPage = Int(value3)+1

        let cellSize = CGSize(width: FRAME_WIDTH, height: FRAME_HEIGHT)
        let contentOffset = collViewPaging.contentOffset
        collViewPaging.scrollRectToVisible(CGRect(x:contentOffset.x + cellSize.width, y: contentOffset.y, width: cellSize.width, height: cellSize.height), animated: true)

        intGetLastPageno = pageControl.currentPage

        if pageControl.currentPage == (arrImages.count-1){
            removeTimer()
            if boolIsCallFromOtherVC == true{
                self.objCompletionHandler!(self.intGetLastPageno)
            }
        }
    }

    //Home Button Action
    func btnHomeAction(sender:UIButton) {
        removeTimer()
        _ = navigationController?.popViewController(animated: true)
    }

    //paging Action
    func pageControlChanged(sender:Any?) {

       removeTimer()

        let pageWidth = collViewPaging.frame.size.width
       // print(pageControl1.currentPage)
        print(pageControl.currentPage)
        let point1 = CGPoint(x:pageWidth * CGFloat(pageControl.currentPage),y:0)
        collViewPaging.setContentOffset(point1, animated: true)

    }

    @IBAction func btnOkGetItAction(_ sender: Any) {

        if boolIsCallFromOtherVC == true{
            self.objCompletionHandler!(self.intGetLastPageno)
        }
        else
        {
            removeTimer()
            _ = navigationController?.popViewController(animated: true)
        }

    }
    //Stop Timer
    func removeTimer()
    {
        // stop Timer
        timer.invalidate()
    }

    //MARK:- Scrollview method
    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {

        removeTimer()
        var pageWidth = CGFloat()
        pageWidth = collViewPaging.frame.size.width
        var contentOffset = CGFloat()
        contentOffset = collViewPaging.contentOffset.x
        let value1 = contentOffset
        let value2 = pageWidth
        let value3 = value1 / value2

        pageControl.currentPage = Int(value3)
        intGetLastPageno = pageControl.currentPage

        if (intGetLastPageno == arrImages.count - 1){

             if boolIsCallFromOtherVC == true{
                DispatchQueue.main.asyncAfter(deadline: .now() + 3.0) {

                self.objCompletionHandler!(self.intGetLastPageno)
                }
            }
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}