PlayerViewController.swift

//
//  DemoMusicPlayerController.swift
//  LNPopupControllerExample
//
//  Created by Leo Natan on 8/8/15.
//  Copyright © 2015 Leo Natan. All rights reserved.
//

import UIKit
import AlamofireImage
import AVFoundation
import MediaPlayer

class PlayerViewController: UIViewController {

	@IBOutlet weak var podcastNameLabel: UILabel!
	@IBOutlet weak var subtitleLabel: UILabel!
	@IBOutlet weak var progressView: UIProgressView!
    @IBOutlet weak var coverartView: UIImageView!
    @IBOutlet weak var backgroundImageView: UIImageView!
    let miniCoverartImageView = UIImageView(image: UIImage(named: "event_placeholder"))
    
    @IBOutlet weak var playPauseButton: UIButton!
    
    var isPlaying:Bool {
        get {
                // rate is always between 0 and 1
                // a rate greater than 0 means its playing
                return player.rate > 0
        }
    }
    var player = AVPlayer()
    var timer : NSTimer?
    let imageCache = AutoPurgingImageCache()
	
	required init?(coder aDecoder: NSCoder) {
		super.init(coder: aDecoder)
		
//		if UIScreen.mainScreen().traitCollection.userInterfaceIdiom == .Pad {

        self.popupItem.rightBarButtonItems = [UIBarButtonItem(image: UIImage(named: "pause"), style: .Plain, target: self, action: "pause")]
        
        miniCoverartImageView.frame = CGRectMake(0, 0, 30, 30)
        let popupItem = UIBarButtonItem(customView: miniCoverartImageView)
        self.popupItem.leftBarButtonItems = [popupItem]
        
        timer = NSTimer.scheduledTimerWithTimeInterval(60, target: self, selector: "_timerTicked:", userInfo: nil, repeats: true)
        
        let commandCenter = MPRemoteCommandCenter.sharedCommandCenter()
        commandCenter.togglePlayPauseCommand.addTarget(self, action: "togglePlayPause")
        commandCenter.togglePlayPauseCommand.enabled = true

	}
    
    var event: Event! {
        didSet {
            updateUI()
            player.replaceCurrentItemWithPlayerItem(AVPlayerItem(URL: event.streamurl))
            play()
        }
    }
	
    override func viewDidLoad() {
        super.viewDidLoad()
        UIApplication.sharedApplication().beginReceivingRemoteControlEvents()
        do {
            try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        } catch {
            
        }
        player = AVPlayer(URL: event.streamurl)
        updateUI()
        play()
	}
    
    func togglePlayPause() {
        print("Toggled")
    }
    
    func pause() {
        player.pause()
        self.popupItem.rightBarButtonItems = [UIBarButtonItem(image: UIImage(named: "play"), style: .Plain, target: self, action: "play")]
        playPauseButton?.setImage(UIImage(named: "nowPlaying_play"), forState: UIControlState.Normal)
    }
    
    @IBAction func togglePlayPause(sender: AnyObject) {
        if isPlaying {
            pause()
        } else {
            play()
        }
    }
    
    func play(){
        do {
            try AVAudioSession.sharedInstance().setActive(true)
        } catch {}
        player.play()
        self.popupItem.rightBarButtonItems = [UIBarButtonItem(image: UIImage(named: "pause"), style: .Plain, target: self, action: "pause")]
        playPauseButton?.setImage(UIImage(named: "nowPlaying_pause"), forState: UIControlState.Normal)

    }
    
    func updateUI() {
        podcastNameLabel?.text = event.title
        popupItem.title = event.title
        subtitleLabel?.text = event.description
        popupItem.subtitle = event.description
        coverartView?.af_setImageWithURL(event.imageurl, placeholderImage: UIImage(named: "event_placeholder"))
        backgroundImageView?.af_setImageWithURL(event.imageurl, placeholderImage: UIImage(named: "event_placeholder"))
        miniCoverartImageView.af_setImageWithURL(event.imageurl, placeholderImage: UIImage(named: "event_placeholder"))
        _timerTicked(timer!)
        
        let songInfo: Dictionary = [
            MPMediaItemPropertyTitle: event.title,
            MPMediaItemPropertyArtist: event.description,
            MPMediaItemPropertyArtwork: MPMediaItemArtwork(image: UIImage(named: "event_placeholder")!)
        ]
        MPNowPlayingInfoCenter.defaultCenter().nowPlayingInfo = songInfo
    }

	override func preferredStatusBarStyle() -> UIStatusBarStyle {
		return .LightContent
	}
	
    // update progress every minute
	func _timerTicked(timer: NSTimer) {
        //print("tick \(event.title)")
        // progress is a value between 0 and 1
        let progress = (Float)(event.progress())
		popupItem.progress = progress
		progressView?.progress = progress
		
//		if popupItem.progress == 1.0 {
//			timer.invalidate()
//			popupPresentationContainerViewController?.dismissPopupBarAnimated(true, completion: nil)
//		}
	}
}