//
//  SendMoneyParentViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 28/08/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import Localize_Swift

// controls the progress hud of parent view from child view
protocol HUDStatusDelegate: class {
    func showLoading()
    func hideLoading()
}

// Actions from SendMoneyExchangeRateViewController are delegated to Parent View
protocol SendMoneyExchangeRateActionDelegate: class {
    func continueToVerificationAction(model: CDDIRequestData)
    func calculated(model: SendMoneyExchangeRateModel?)
    func continueToCDDI()
    func continueToTermsAndConditions()
}

// A model encapsulating all field required to make the api request for send money
class SendMoneyRequestModel {
    var paymemtMode: SendMoneyPayoutMode? = SendMoneyPayoutMode()
    var bank: SendMoneyBank? = SendMoneyBank()
    var branch: SendMoneyBankBranch? = SendMoneyBankBranch()
    var accountNumber: String?
    var payingAmount: String?
    var exchangeRateDetail: SendMoneyExchangeRateModel?
    var transactionPassword: String?
    var autoDebitAccount: Account?
    var isUseBiometric: Bool?
}

class SendMoneyParentViewController: UIViewController {
    
    private enum StateButtons: Int {
        case exchange = 1
        case cddi = 2
        case verification = 3
        case terms = 4
    }
    
    private struct Constants {
        static let stateRedColor = UIColor.init(hex: "#EC1C24")
        static let stateGreenColor = UIColor.themeBlue
        static let stateLabelGreyColor = UIColor.init(hex: "4a4a4a")
    }
    
    private struct StringConstants {
        let payoutModeText = "payout_mode_text".localized()
        let amountDetailText = "amount_detail_text".localized()
        let verificationDetailText = "verification_detail_text".localized()
    }
    
    // MARK: IBOutlets
    // Container view holds the child view controllers
    // There are three child view controllers.
    // 2. SendMoneyExchangeRateViewController
    // 3. SendMoneyVerificationViewController
    
    @IBOutlet weak var containerView: UIView!
    @IBOutlet weak var exchangeRateButton: UIButton!
    @IBOutlet weak var verificationButton: UIButton!
    @IBOutlet weak var exchangeRateLabel: UILabel!
    @IBOutlet weak var verificationLabel: UILabel!
    @IBOutlet weak var cddiButton: UIButton!
    @IBOutlet weak var termsButton: UIButton!
    @IBOutlet weak var cddiLabel: UILabel!
    @IBOutlet weak var termsLabel: UILabel!
    
    // MARK: Properties
    var sendMoneyExchangeRateViewController: SendMoneyExchangeRateViewController?
    var sendMoneyVerificationViewController: SendMoneyVerificationViewController?
    var cddiViewController: CDDIViewControllerViewController?
    var termsViewController: TermsAndConditionViewController?
    
    lazy private var requestModel = SendMoneyRequestModel()
    lazy private var cddiModel = CDDIRequestData()
    var presenter: SendMoneyParentModuleInterface?
    
    // Buttons representing the pages marked as 1, 2, 3 in UI.
    var stateButtons: [UIButton] = []
    
    private var state: StateButtons = .exchange {
        didSet {
            self.updateState(state: state)
        }
    }
    var receipient: Recipient? {
        didSet {
            self.requestModel.bank?.id = receipient?.agent?.id
            self.requestModel.bank?.name = receipient?.agent?.name
            self.requestModel.bank?.payCurrency = receipient?.agent?.currency
            
            self.requestModel.accountNumber = receipient?.agent?.accountNumber
            
            self.requestModel.branch?.id = receipient?.agent?.branch?.id
            self.requestModel.branch?.name = receipient?.agent?.branch?.name
            
            self.requestModel.paymemtMode?.id = receipient?.paymentMethod?.id
            self.requestModel.paymemtMode?.mode = receipient?.paymentMethod?.name
            self.requestModel.paymemtMode?.payCurrency = receipient?.paymentMethod?.currency
            self.requestModel.paymemtMode?.payoutPartner = receipient?.payoutPartner
            self.requestModel.paymemtMode?.accountNumber = receipient?.agent?.accountNumber
        }
    }
    
    // MARK: VC's Life cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.setup()
        self.presenter?.viewIsReady()
        self.setupViewControllers()
        self.addExchangeViewController()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.setupNormalNavigation()
        setTitle(title: "send_money_text".localized())
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.navigationItem.title = ""
        view.endEditing(true)
    }
    
    // MARK: IBActions
    
    @IBAction func exchangeRate(_ sender: UIButton) {
        self.addExchangeViewController()
        self.state = StateButtons.exchange
    }
    
    @IBAction func verification(_ sender: UIButton) {
        self.addVerificationViewController()
        self.state = StateButtons.verification
    }
    
    @IBAction func cddiTapped(_ sender: UIButton) {
        self.addCddiViewController()
        self.state = StateButtons.cddi
    }
    
    @IBAction func termsAndConditions(_ sender: UIButton) {
        self.addTermsAndConditions()
        self.state = StateButtons.terms
    }
    // MARK: Other Functions
    
    private func setup() {
        // all setup should be done here
        self.setTitle(title: "send_money_text".localized())
        self.state = StateButtons.exchange
        self.configureViews()
        self.requestModel = SendMoneyRequestModel()
        configureLanguage()
    }
    
    private func configureLanguage() {
        self.exchangeRateLabel.text = StringConstants().amountDetailText
        self.verificationLabel.text = StringConstants().verificationDetailText
    }
    
    private func setTitle(title: String) {
        self.navigationItem.title = title
    }
    
    private func setupViewControllers() {
        sendMoneyExchangeRateViewController = SendMoneyExchangeRateWireframe()
            .getMainView() as? SendMoneyExchangeRateViewController
        sendMoneyExchangeRateViewController?.reciepient = self.receipient
        sendMoneyExchangeRateViewController?.actionDelegate = self
        sendMoneyExchangeRateViewController?.hudDelegate = self
        
        sendMoneyVerificationViewController = SendMoneyVerificationWireframe()
            .getMainView() as? SendMoneyVerificationViewController
        sendMoneyVerificationViewController?.reciepient = self.receipient
        sendMoneyVerificationViewController?.requestModel = self.requestModel
        sendMoneyVerificationViewController?.hudDelegate = self
        
        cddiViewController = CDDIViewControllerWireframe().getMainView() as? CDDIViewControllerViewController
        cddiViewController?.reciepient = self.receipient
        cddiViewController?.requestModel = self.requestModel
        cddiViewController?.hudDelegate = self
        
        termsViewController = TermsAndConditionWireframe().getMainView() as? TermsAndConditionViewController
        termsViewController?.reciepient = self.receipient
        termsViewController?.requestModel = self.requestModel
        termsViewController?.hudDelegate = self
    }
    
    private func configureViews() {
        self.exchangeRateButton.tag = 2
        self.verificationButton.tag = 3
        self.cddiButton.tag = 4
        self.termsButton.tag = 5
        self.stateButtons = [exchangeRateButton, verificationButton, cddiButton, termsButton]
        [exchangeRateButton, verificationButton, cddiButton, termsButton].forEach({
            $0?.rounded()
        })
    }
    
    private func updateState(state: StateButtons) {
        switch state {
        case .exchange:
            // buttons
            self.exchangeRateButton.backgroundColor = .themeBlue
            self.exchangeRateButton.setTitleColor(.white, for: .normal)
            
            self.verificationButton.backgroundColor = .white
            self.verificationButton.setTitleColor(.black, for: .normal)
            self.verificationButton.layer.borderColor = UIColor.lightGray.cgColor
            self.verificationButton.layer.borderWidth = 1
            
            self.cddiButton.backgroundColor = .white
            self.cddiButton.setTitleColor(.black, for: .normal)
            self.cddiButton.layer.borderColor = UIColor.lightGray.cgColor
            self.cddiButton.layer.borderWidth = 1
            
            self.termsButton.backgroundColor = .white
            self.termsButton.setTitleColor(.black, for: .normal)
            self.termsButton.layer.borderColor = UIColor.lightGray.cgColor
            self.termsButton.layer.borderWidth = 1
            
            self.exchangeRateButton.isUserInteractionEnabled = true
            self.verificationButton.isUserInteractionEnabled = false
            self.cddiButton.isUserInteractionEnabled = false
            self.termsButton.isUserInteractionEnabled = false
            
            // labels
            self.exchangeRateLabel.textColor = .themeText
            self.verificationLabel.textColor = .themeText
            self.cddiLabel.textColor = .themeText
            self.termsLabel.textColor = .themeText
        
        case .cddi:
            self.exchangeRateButton.backgroundColor = .themeBlue
            self.exchangeRateButton.setTitleColor(.white, for: .normal)
            self.exchangeRateButton.isUserInteractionEnabled = true
            
            self.cddiButton.backgroundColor = .themeBlue
            self.cddiButton.setTitleColor(.white, for: .normal)
            self.cddiButton.layer.borderWidth = 0
            
            self.verificationButton.backgroundColor = .white
            self.verificationButton.setTitleColor(.black, for: .normal)
            self.verificationButton.layer.borderColor = UIColor.lightGray.cgColor
            self.verificationButton.layer.borderWidth = 1
            
            self.termsButton.backgroundColor = .white
            self.termsButton.setTitleColor(.black, for: .normal)
            self.termsButton.layer.borderColor = UIColor.lightGray.cgColor
            self.termsButton.layer.borderWidth = 1
            
            self.exchangeRateButton.isUserInteractionEnabled = true
            self.verificationButton.isUserInteractionEnabled = false
            self.cddiButton.isUserInteractionEnabled = true
            self.termsButton.isUserInteractionEnabled = false
            
            // labels
            self.exchangeRateLabel.textColor = .themeText
            self.verificationLabel.textColor = .themeText
            self.cddiLabel.textColor = .themeText
            self.termsLabel.textColor = .themeText
            
        case .verification:
            
            // button
            self.exchangeRateButton.backgroundColor = .themeBlue
            self.exchangeRateButton.setTitleColor(.white, for: .normal)
            self.exchangeRateButton.isUserInteractionEnabled = true
            
            self.cddiButton.backgroundColor = .themeBlue
            self.cddiButton.setTitleColor(.white, for: .normal)
            self.cddiButton.isUserInteractionEnabled = true
            
            self.verificationButton.backgroundColor = .themeBlue
            self.verificationButton.setTitleColor(.white, for: .normal)
            self.verificationButton.layer.borderWidth = 0
            self.verificationButton.isUserInteractionEnabled = true
            
            self.termsButton.backgroundColor = .white
            self.termsButton.setTitleColor(.black, for: .normal)
            self.termsButton.layer.borderColor = UIColor.lightGray.cgColor
            self.termsButton.layer.borderWidth = 1
            self.termsButton.isUserInteractionEnabled = false
            
            // labels
            self.exchangeRateLabel.textColor = .themeText
            self.verificationLabel.textColor = .themeText
            self.cddiLabel.textColor = .themeText
            self.termsLabel.textColor = .themeText
            
        case .terms:
            self.exchangeRateButton.backgroundColor = .themeBlue
            self.exchangeRateButton.isUserInteractionEnabled = true
            self.exchangeRateButton.setTitleColor(.white, for: .normal)
            
            self.cddiButton.backgroundColor = .themeBlue
            self.cddiButton.isUserInteractionEnabled = true
            self.cddiButton.setTitleColor(.white, for: .normal)
            
            self.verificationButton.backgroundColor = .themeBlue
            self.verificationButton.setTitleColor(.white, for: .normal)
            self.cddiButton.isUserInteractionEnabled = true
            
            self.termsButton.backgroundColor = .themeBlue
            self.termsButton.setTitleColor(.white, for: .normal)
            self.termsButton.layer.borderWidth = 0
            self.termsButton.isUserInteractionEnabled = true
            
            // labels
            self.exchangeRateLabel.textColor = .themeText
            self.verificationLabel.textColor = .themeText
            self.cddiLabel.textColor = .themeText
            self.termsLabel.textColor = .themeText
            
        }
    }
    
    private func addExchangeViewController() {
        guard let exchangeViewController = sendMoneyExchangeRateViewController else { return }
        
        exchangeViewController.requestModel = self.requestModel
        exchangeViewController.actionDelegate = self
        
        self.addChild(exchangeViewController)
        
        UIView.transition(
            with: self.containerView,
            duration: 0.33,
            options: .transitionCrossDissolve,
            animations: {
                self.containerView.addSubview(exchangeViewController.view)
            },
            completion: nil
        )
        
        exchangeViewController.view.frame = containerView.bounds
        exchangeViewController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        exchangeViewController.didMove(toParent: self)
    }
    
    private func addCddiViewController() {
        
        guard let ccdiView = cddiViewController else {return}
        ccdiView.requestModel = self.requestModel
        ccdiView.actionDelegate = self
        
        self.addChild(ccdiView)
        
        UIView.transition(
            with: self.containerView,
            duration: 0.33,
            options: .transitionCrossDissolve,
            animations: {
                self.containerView.addSubview(ccdiView.view)
            },
            completion: nil
        )
        
        ccdiView.view.frame = containerView.bounds
        ccdiView.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        ccdiView.didMove(toParent: self)
        
    }
    
    //  Make SendMoneyExchangeRateViewController as front View Controller
    private func addVerificationViewController() {
        guard let verificationViewController = sendMoneyVerificationViewController else {return}
        
        verificationViewController.reciepient = self.receipient
        verificationViewController.requestModel = self.requestModel
        verificationViewController.actionDelegate = self
        
        self.addChild(verificationViewController)
        
        UIView.transition(
            with: self.containerView,
            duration: 0.33,
            options: .transitionCrossDissolve,
            animations: {
                self.containerView.addSubview(verificationViewController.view)
            },
            completion: nil
        )
        
        verificationViewController.view.frame = containerView.bounds
        verificationViewController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        verificationViewController.didMove(toParent: self)
    }

    private func addTermsAndConditions() {
        guard let termsView = termsViewController else {return}
        termsView.reciepient = self.receipient
        termsView.requestModel = self.requestModel
        termsView.cddiModel = self.cddiModel
        self.addChild(termsView)
        
        UIView.transition(
            with: self.containerView,
            duration: 0.33,
            options: .transitionCrossDissolve,
            animations: {
                self.containerView.addSubview(termsView.view)
            },
            completion: nil
        )
        
        termsView.view.frame = containerView.bounds
        termsView.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        termsView.didMove(toParent: self)
    }
}

// MARK: SendMoneyParentViewInterface
extension SendMoneyParentViewController: SendMoneyParentViewInterface {
    func show(model: Recipient) {
        self.receipient = model
    }
}

extension SendMoneyParentViewController: HUDStatusDelegate {
    func showLoading() {
        self.tabBarController?.showProgressHud()
    }
    
    func hideLoading() {
        self.tabBarController?.hideProgressHud()
    }
}

extension SendMoneyParentViewController: SendMoneyExchangeRateActionDelegate {
    func continueToCDDI() {
        self.addCddiViewController()
        self.state = StateButtons.cddi
    }
    
    func continueToTermsAndConditions() {
        self.addTermsAndConditions()
        self.state = StateButtons.terms
    }
    
    func continueToVerificationAction(model: CDDIRequestData) {
        self.cddiModel = model
        print("model:\(model)")
        self.addVerificationViewController()
        self.state = StateButtons.verification
    }
    
    func calculated(model: SendMoneyExchangeRateModel?) {
        self.requestModel.exchangeRateDetail = model
    }
}