//
//  LoadingAnimationViewController.swift
//  Learn Genie
//
//  Created by Suraj Kumar Mandal on 12/08/21.
//

import UIKit
import SwiftyGif
import Toast_Swift

class LoadingAnimationViewController: UIViewController {
    
    @IBOutlet weak var imageView: UIImageView!
    @IBOutlet weak var loadingLabel: UILabel!
    //@IBOutlet weak var linearProgressBar: DSGradientProgressView!
    
    @IBOutlet var activityIndicator: UIActivityIndicatorView!
    
    var viewModel = LoadingAnimationViewModel()
    let group = DispatchGroup()
    var isWaiting = false
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Do any additional setup after loading the view.
        viewModel.delegate = self
        self.isWaiting = true
        setupUI()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        //Progress View
        //linearProgressBar.startProgress()
        activityIndicator.startAnimating()
        //GIF Animation
        let gif = try! UIImage(gifName: "loading.gif")
        self.imageView.setGifImage(gif, loopCount: -1)
        self.loadingLabel.text = Helper.translateText(inputText: "Loading data please wait")
        // Call performTask after a delay of 5 second
        DispatchQueue.global(qos: .background).asyncAfter(deadline: .now() + 5) {
            DispatchQueue.main.async {
                self.loadingLabel.text = Helper.translateText(inputText: "An exciting journey awaits you, please wait for a couple of minutes")
            }
        }
    }
    
    func setupUI() {
        if UserDefaults.standard.bool(forKey: "introduction") {
            if Reachability.isConnectedToNetwork() {
                DispatchQueue.main.async {
                    self.viewModel.generateCookie()
                }
            } else {
                Alert.showInternetFailureAlert(on: self)
            }
        } else {
            // Call performTask after a delay of 4 second
            DispatchQueue.global(qos: .background).asyncAfter(deadline: .now() + 4) {
                DispatchQueue.main.async {
                    self.navigation()
                }
            }
        }
    }
    
    func callAPI() {
        group.enter()
        viewModel.topicDownloader()
        
        group.enter()
        viewModel.getLevel()
        
        group.enter()
        viewModel.getQuestionBank(offset: 0)
        
        group.enter()
        viewModel.getQuestion(offset: 0)
        
        group.enter()
        viewModel.getChoice(offset: 0)
        
        group.enter()
        viewModel.getScoreBoard()
        
        group.notify(queue: .main, execute: {
            // Update the UI
            self.isWaiting = false
            print("All API called")
            self.activityIndicator.stopAnimating()
            //self.linearProgressBar.stopProgress()
            self.navigation()
        })
    }

    
    /*
     // MARK: - Navigation
     
     // In a storyboard-based application, you will often want to do a little preparation before navigation
     override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
     // Get the new view controller using segue.destination.
     // Pass the selected object to the new view controller.
     }
     */
    
}

extension LoadingAnimationViewController : LoadingAnimationViewProtocol {
    
    func callDataAPI() {
        self.callAPI()
    }
    
    func groupLeave() {
        group.leave()
    }
    
    func stopActivityIndicator() {
        //linearProgressBar.stopProgress()
        self.activityIndicator.stopAnimating()
    }
    
    func showToastMessage(message: String) {
        self.view.makeToast(message)
    }
    
    func navigation() {
        if UserDefaults.standard.bool(forKey: "introduction") {
            DispatchQueue.main.async {
                let introVC = self.storyboard?.instantiateViewController(withIdentifier: "IntroductionViewController") as! IntroductionViewController
                introVC.topicName = "Introduction"
                self.navigationController?.pushViewController(introVC, animated: false)
            }
        } else {
            DispatchQueue.main.async {
                let dashboardVC = self.storyboard?.instantiateViewController(withIdentifier: "DashboardViewController") as! DashboardViewController
                self.navigationController?.pushViewController(dashboardVC, animated: false)
            }
        }
    }
    
}