LONDON-IOS/GMERemittance/Reward/RewardViewController.swift

//
//  RewardViewController.swift
//  GMERemittance
//
//  Created by Sujal on 3/14/18.
//  Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import SDWebImage

class RewardViewController: UIViewController {

    @IBOutlet weak var rewardCollectionView: UICollectionView!
    
    @IBOutlet weak var labelRewardPoint: UILabel!
    
    let itemsPerRow: CGFloat = 2
    let insetValue: CGFloat = 7
    
    var availablePoints: String!
    
    static var notificationCode: String = ""
    
    private var activityIndicator: UIActivityIndicatorView = UIActivityIndicatorView()
    private var rewardviewmodel = RewardViewModel()
    
    public var fromNotification: Int?
    public static var rewardConnectionTimeOutCheck = 0
    
    override func viewDidAppear(_ animated: Bool) {
        setUpNetworkListener()
        setUpAnotherLoginListener(genericviewmodel: rewardviewmodel)
    }
   
    override func viewDidLoad() {
        super.viewDidLoad()

        if RewardViewController.notificationCode == "p700" {
            setUpNavBar(id: 207, title: "Reward")
        }else {
            setUpNavBar(id: 201, title: "Reward")
        }
        setUpListener()
        
        availablePoints = UserDefaults.standard.object(forKey: "com.gmeremit.rewardPoint") as! String
        
        labelRewardPoint.text = availablePoints
        
        rewardCollectionView.delegate = self
        rewardCollectionView.dataSource = self
    
        showActivityIndicator(activityIndicator: activityIndicator)
        disableUserInteractions()
        
        rewardviewmodel.rewardConnectionTimeOut.value = nil
        /**
         connection timeout
         */
        rewardviewmodel.rewardConnectionTimeOut.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.enableUserInteractions()
            self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
            if self.fromNotification != 0{
                if RewardViewController.rewardConnectionTimeOutCheck == 0{
                    RewardViewController.rewardConnectionTimeOutCheck = RewardViewController.rewardConnectionTimeOutCheck+1
                    self.popUpMessage(value: 37)
                }
            }
        }
        rewardviewmodel.fetchRewards()
    }
    /**
        Internet Check
     */
    func setUpNetworkListener() {
        rewardviewmodel.internetConnection.bind { [unowned self] in
            guard $0 != nil else {
                return
            }
            self.enableUserInteractions()
            self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
            self.popUpMessage(value: 15)
        }
    }
    
    /**
        Update reward data in view
     */
    func setUpListener() {
        
        rewardviewmodel.rewardsAvailable.bind { [unowned self] in
            
            guard $0 != nil else {
                return
            }
            
            self.dismissActivityIndicator(activityIndicator: self.activityIndicator)
            self.enableUserInteractions()
            
            if $0 == 0 {
                self.popUpMessageError(value: 10, message: self.rewardviewmodel.getErrorMessage())
                
            } else if $0 == 1 {
                self.rewardCollectionView.reloadData()
                
            }
            self.rewardviewmodel.rewardsAvailable.value = nil
        }
        
    }
    
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        let redeemViewController
            = segue.destination as! RedeemViewController
        redeemViewController.rewardviewmodel = self.rewardviewmodel
    }
}

extension RewardViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
   
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return rewardviewmodel.getRewardCount()
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        
        let rewardCell = collectionView.dequeueReusableCell(withReuseIdentifier: "rewardCollectionViewCell", for: indexPath) as! RewardCollectionViewCell
        
        if let rewardImageString = rewardviewmodel.getRewardImage(index: indexPath.row) {
            if let rewardImageUrl = URL(string: rewardImageString) {
                rewardCell.imageViewReward.sd_setImage(with: rewardImageUrl, placeholderImage: nil, options: [.progressiveDownload,.scaleDownLargeImages], completed: nil)
            }
        }
        
        rewardCell.labelRewardName.text = rewardviewmodel.getRewardName(index: indexPath.row)
        
        let redeemPoint = rewardviewmodel.getRedeemPoint(index: indexPath.row)
        rewardCell.labelRewardPoint.text = redeemPoint + " " + "Points"
        
        if Float(redeemPoint)! <= Float(availablePoints)! {
            rewardCell.buttonRedeem.backgroundColor = UIColor(hex: 0xec1c24)
        } else {
            rewardCell.buttonRedeem.isUserInteractionEnabled = false
        }
        
        rewardCell.delegate = self
        
        return rewardCell
    }
    
    func collectionView(_ collectionView: UICollectionView,
                        layout collectionViewLayout: UICollectionViewLayout,
                        sizeForItemAt indexPath: IndexPath) -> CGSize {
        let widthPerItem = (collectionView.frame.width - insetValue * 2 - insetValue) / itemsPerRow
        return CGSize(width: widthPerItem, height: 1.1 * widthPerItem)
    }

    func collectionView(_ collectionView: UICollectionView,
                        layout collectionViewLayout: UICollectionViewLayout,
                        insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsets(top: insetValue, left: insetValue, bottom: insetValue, right: insetValue)
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return insetValue
    }

    func collectionView(_ collectionView: UICollectionView,
                        layout collectionViewLayout: UICollectionViewLayout,
                        minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return insetValue
    }
}

extension RewardViewController: RedeemRewardDelegate {
    
    func redeemReward(_ sender: RewardCollectionViewCell) {
        guard let indexPath = rewardCollectionView.indexPath(for: sender) else {
            return
        }
        rewardviewmodel.setSelectedRewardIndex(index: indexPath.row)
    }
    
    
    
}