//
//  SecondGameLearnViewController.swift
//  Guibe
//
//  Created by Max Hunt on 11/06/2019.
//  Copyright © 2019 8. All rights reserved.
//

import UIKit
import AVKit

class SecondGameLearnViewController: UIViewController, AVAudioPlayerDelegate {
    
    @IBOutlet weak var textLabel: UILabel!
    @IBOutlet weak var mainButton: UIButton!
    @IBOutlet weak var nextBtn: UIButton!
    @IBOutlet weak var progressBar: UIProgressView!
    @IBOutlet var vCtrl: UIView!
    
    @IBAction func mainBtnPressed(_ sender: Any) {
        audioPlay(fName: self.fileName)
    }
    
    @IBAction func nextBtnPressed(_ sender: Any) {
        stepCounter += 1
        stepThrough(ptr: stepCounter)
    }
    
    @IBAction func backBtnPressed(_ sender: Any) {
        self.dismiss(animated: true, completion: nil)
    }
    
    var stepCounter: Int = 0
    var fileName: String = ""
    
    var player = AVAudioPlayer()
    
    let defaults = UserDefaults.standard
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        vCtrl.backgroundColor = UIColor.secondarySystemBackground
        textLabel.textColor = UIColor.secondaryLabel
        
        textLabel.text = "Now we will learn the different haptic patterns for navigating with Guibe"
        textLabel.accessibilityLabel = "Now we will learn the different haptic patterns for navigationg with ghibe"
        mainButton.accessibilityLabel = "Play vibration"
        mainButton.alpha = 0.0
        nextBtn.accessibilityLabel = "Next"
        // Do any additional setup after loading the view.
    }
    

    func stepThrough(ptr:Int) {
        switch ptr {
        case 1:
            beginJourney()
            self.fileName = "guibe_begin"
        case 2:
            arrivedAtDestination()
            self.fileName = "guibe_arrived"
        case 3:
            wrongDirection()
            self.fileName = "guibe_wrongdirection"
        case 4:
            turnRight()
            let var1 = "guibe_right"
            let var2 = "guibe_left"
            
            if defaults.integer(forKey: "handSide") == 1{
                if defaults.integer(forKey: "bigSide") == 1{
                    self.fileName = var1
                }
                else if defaults.integer(forKey: "bigSide") == 2 {
                    self.fileName = var2
                }
                else { errorMsg() }
            }
            else if defaults.integer(forKey: "handSide") == 2 {
                if defaults.integer(forKey: "bigSide") == 1{
                    self.fileName = var2
                }
                else if defaults.integer(forKey: "bigSide") == 2 {
                    self.fileName = var1
                }
                else { errorMsg() }
            }
            else { errorMsg() }
        case 5:
            turnLeft()
            let var1 = "guibe_left"
            let var2 = "guibe_right"
            
            if defaults.integer(forKey: "handSide") == 1{
                if defaults.integer(forKey: "bigSide") == 1{
                    self.fileName = var1
                }
                else if defaults.integer(forKey: "bigSide") == 2 {
                    self.fileName = var2
                }
                else { errorMsg() }
            }
            else if defaults.integer(forKey: "handSide") == 2 {
                if defaults.integer(forKey: "bigSide") == 1{
                    self.fileName = var2
                }
                else if defaults.integer(forKey: "bigSide") == 2 {
                    self.fileName = var1
                }
                else { errorMsg() }
            }
            else { errorMsg() }
        case 6:
            showDone()
            self.fileName = "guibe_arrived"
        case 7:
            nextPage()
        default:
            return
        }
    }
    
    func beginJourney() {
        UIView.animate(withDuration: 0.5, animations: {self.mainButton.alpha = 1.0})
        self.textLabel.fadeTransition(0.5)
        self.textLabel.text = "This means \n'begin journey'"
        self.progressBar.setProgress(0.2, animated: true)
        self.textLabel.accessibilityLabel = "This means begin journey"
    }
    
    func arrivedAtDestination() {
        self.textLabel.fadeTransition(0.5)
        self.textLabel.text = "This means \n'arrived at destination'"
        self.progressBar.setProgress(0.4, animated: true)
        self.textLabel.accessibilityLabel = "This means arrived at destination"
    }
    
    func wrongDirection() {
        self.textLabel.fadeTransition(0.5)
        self.textLabel.text = "This means \n'you're walking in the wrong direction'"
        self.progressBar.setProgress(0.6, animated: true)
        self.textLabel.accessibilityLabel = "This means you're walking in the wrong direction"
    }
    
    func turnRight() {
        self.textLabel.fadeTransition(0.5)
        self.textLabel.text = "This means \n'turn right'"
        self.progressBar.setProgress(0.8, animated: true)
        self.textLabel.accessibilityLabel = "This means turn right"
    }
    
    func turnLeft() {
        self.textLabel.fadeTransition(0.5)
        self.textLabel.text = "This means \n'turn left'"
        self.progressBar.setProgress(1.0, animated: true)
        self.textLabel.accessibilityLabel = "This means turn left"
    }
    
    func showDone() {
        self.textLabel.fadeTransition(0.5)
        self.textLabel.text = "You are all set!"
        UIView.animate(withDuration: 0.5, animations: {self.mainButton.alpha = 0.0})
        self.progressBar.alpha = 0.0
        self.textLabel.accessibilityLabel = "You are all set"
    }
    
    func nextPage() {
        self.dismiss(animated: true, completion: nil)
    }
    
    func audioPlay (fName: String) {
        let path = Bundle.main.path(forResource: fName, ofType : "mp3")!
        let url = URL(fileURLWithPath : path)
        do {
            player = try AVAudioPlayer(contentsOf: url)
            player.delegate = self
            player.play()
        } catch {
            debugPrint("Error in playing sound file \(fName).mp3")
        }
    }
    
    func errorMsg() {
        let alert = UIAlertController(title: "Playback Error", message: "Error in either keyValues or filename", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { action in
            switch action.style{
            case .default:
                self.dismiss(animated: true, completion: nil)
                
            case .cancel:
                return
                
            case .destructive:
                return
            }}))
        self.present(alert, animated: true, completion: nil)
    }
    
}