AdMob

import UIKit
import GoogleMobileAds

class AdViewController: UIViewController, GADBannerViewDelegate {

    var banner:GADBannerView!
    var bannerBackground:UIView!

    override func viewDidLoad() {
        super.viewDidLoad()

        //init banner
        initBanner()

        //set layout
        setLayout()

    }

    func setLayout(){

        var views:[String:AnyObject] = ["topGuide" : self.topLayoutGuide, "bottomGuide" : self.bottomLayoutGuide]

        if !Constants.IS_PREMIUM  {
            views["banner"] = bannerBackground
        }

        let metrics:[String:AnyObject] = ["bannerHeight" : Constants.IS_IPAD ? kGADAdSizeLeaderboard.size.height : kGADAdSizeBanner.size.height]

        //horizontal constraints
        var constraints:[NSLayoutConstraint] = []
        constraints.appendContentsOf( NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[topGuide]-0-|", options: [], metrics: metrics, views: views) )

        if !Constants.IS_PREMIUM  {
            constraints.appendContentsOf( NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[banner]-0-|", options: [], metrics: metrics, views: views) )
        }

        //vertical constraints

        if !Constants.IS_PREMIUM {

            constraints.appendContentsOf( NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[topGuide]->=0-[banner(==bannerHeight)]-0-|", options: [], metrics: metrics, views: views) )

        }else{

            constraints.appendContentsOf( NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[topGuide]->=0-|", options: [], metrics: metrics, views: views) )

        }

        self.view.addConstraints(constraints)

    }

    //init banner
    func initBanner(){

        bannerBackground = UIView()
        bannerBackground.hidden = true
        bannerBackground.backgroundColor = Constants.color12
        bannerBackground.translatesAutoresizingMaskIntoConstraints = false
        self.view.addSubview(bannerBackground)

        if !Constants.IS_PREMIUM {

            bannerBackground.hidden = false

            banner = GADBannerView()
            banner.alpha = 0
            if Constants.IS_IPAD {
                banner.adSize = kGADAdSizeLeaderboard
            }else{
                banner.adSize = kGADAdSizeBanner
            }
            banner.adUnitID = Constants.ADMOB_ID
            banner.delegate = self
            banner.translatesAutoresizingMaskIntoConstraints = false
            banner.rootViewController = self

            let request = GADRequest()
            request.testDevices = Constants.ADMOB_TEST_DEVICES
            banner.loadRequest(request)

            bannerBackground.addSubview(banner)

            bannerBackground.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[banner]-0-|", options: [], metrics: nil, views: ["banner" : banner]))

            bannerBackground.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[banner(==bannerHeight)]-0-|", options: [], metrics: ["bannerHeight" : Constants.IS_IPAD ? kGADAdSizeLeaderboard.size.height : kGADAdSizeBanner.size.height], views: ["banner" : banner]))

        }

    }

    func adView(bannerView: GADBannerView!, didFailToReceiveAdWithError error: GADRequestError!) {
        print("Ad:" + error.localizedDescription)
    }

    func adViewDidReceiveAd(bannerView: GADBannerView!) {
        UIView.animateWithDuration(Constants.BANNER_ANIMATION_INTERVAL, animations: {
            self.banner.alpha = 1
        })
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}