//
//  KycForm1ViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 12/09/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit
import XLPagerTabStrip

class KycForm1Model {
    var firstName = ""
    var middleName = ""
    var lastName = ""
    var gender = ""
//    var dob = ""
    var mobile = ""
    var email = ""
    var nativeCountry = ""
    var country = ""
    var province = ""
    var occupation = ""
}

class Occupation {
    var title: String?
    var id: String?
}

struct KycForm1FieldKeys {
    static let firstName = "firstname"
    static let middleName = "middlename"
    static let lastName = "lastname"
    static let gender = "gender"
//    static let dob = "date of birth"
    static let mobileNumber = "mobile number"
    static let email = "email"
    static let nativeCountry = "native country"
    static let country = "address"
    static let province = "province"
    static let occupation = "occupation"
}

class KycForm1ViewController: UIViewController {
    
    struct Constants {
        static let segmentBackgroundViewColor = UIColor.init(hex: "E7EDF2")
        static let stateRedColor = UIColor.init(hex: "#EC1C24")
        static let errorBorderWidth = AppConstants.errorBorderWidth
        static let errorLabelFont = Fonts.Error.font
        static let clearColor = UIColor.clear
        static let male = "Male"
        static let female = "Female"
        static let other = "Other"
        static let cancelTitleString = "Cancel"
    }
    
    // MARK: IBOutlets
    
    @IBOutlet weak var scrollView: UIScrollView!
    // validation labels
    @IBOutlet weak var firstNameErrorLabel: UILabel!
    @IBOutlet weak var middleNameErrorLabel: UILabel!
    @IBOutlet weak var lastNameErrorLabel: UILabel!
    @IBOutlet weak var genderErrorLabel: UILabel!
    @IBOutlet weak var dobErrorLabel: UILabel!
    @IBOutlet weak var mobileNumberErrorLabel: UILabel!
    @IBOutlet weak var emailErrorLabel: UILabel!
    @IBOutlet weak var nativeCountryErrorLabel: UILabel!
    @IBOutlet weak var countryErrorLabel: UILabel!
    @IBOutlet weak var provinceErrorLabel: UILabel!
    @IBOutlet weak var occupationErrorLabel: UILabel!
    
    // textfields
    @IBOutlet weak var firstNameTextField: UITextField!
    @IBOutlet weak var middleNmaeTextField: UITextField!
    @IBOutlet weak var lastNameTextField: UITextField!
    @IBOutlet weak var genderTextField: UITextField!
    @IBOutlet weak var dobTextField: UITextField!
    @IBOutlet weak var mobileNumberTextField: UITextField!
    @IBOutlet weak var emailTextField: UITextField!
    @IBOutlet weak var nativeCountryTextField: UITextField!
    @IBOutlet weak var countryTextField: UITextField!
    @IBOutlet weak var provinceTextField: UITextField!
    @IBOutlet weak var occupationTextField: UITextField!
    
    
    // MARK: Properties
    
    var presenter: KycForm1ModuleInterface?
    var kycForm1Model: KycForm1Model = KycForm1Model()
    var continueActionInitiated = false
    let datePicker = UIDatePicker()
    
    var errorTextFieldDict: [String: UITextField] = [:]
    var errorLabelsDict: [String: UILabel] = [:]
    
    var errorLabels: [UILabel] = []
    var textfields: [UITextField] = []
    var delegate: KYCForm1Delegate?
    var countries: [KeyValueModel]?
    var occupations: [KeyValueModel]?
    
    var kycModel: KycModel? {
        didSet {
            self.countries = kycModel?.nativeCountry
            self.occupations = kycModel?.occupations
            self.proviences = kycModel?.city
        }
    }
    
    var proviences: [KeyValueModel]?
    
    var selectedCountry: SendMoneyCountryViewModel? {
        didSet {
            self.nativeCountryTextField.text = selectedCountry?.name
            self.kycForm1Model.nativeCountry = selectedCountry?.id ?? ""
        }
    }
    
    var selectedProvience: KeyValueModel? {
        didSet {
            self.provinceTextField.text = selectedProvience?.text
            self.kycForm1Model.province = selectedProvience?.id ?? ""
            
        }
    }
    
    var selectedOccupation: KeyValueModel? {
        didSet {
            self.occupationTextField.text = selectedOccupation?.text
            self.kycForm1Model.occupation = selectedOccupation?.id ?? ""
        }
    }
    
    // MARK: VC's Life cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.setup()
        presenter?.viewIsReady()
        
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.view.endEditing(true)
        removeFocus()
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.view.endEditing(true)
        self.continueActionInitiated = false
        self.validate()
    }

    
    // MARK: IBActions
    
    @IBAction func save(_ sender: UIButton) {
        self.view.endEditing(true)
        self.continueActionInitiated = true
        self.delegate?._continue(model: self.kycForm1Model)
//        validate()
    }
    
    // MARK: Other Functions
    
    
    private func removeFocus() {
        self.textfields.forEach({
            $0.resignFirstResponder()
        })
    }
    
    private func createModel() {
        self.kycForm1Model.firstName = self.firstNameTextField.text!
        self.kycForm1Model.middleName = self.middleNmaeTextField.text!
        self.kycForm1Model.lastName = self.lastNameTextField.text!
        self.kycForm1Model.gender = self.genderTextField.text!
//        self.kycForm1Model.dob = self.dobTextField.text!
        self.kycForm1Model.mobile = self.mobileNumberTextField.text!
        self.kycForm1Model.email = self.emailTextField.text!
        self.kycForm1Model.country = self.countryTextField.text! // this is addres field
    }
    
    
    private func setup() {
        // all setup should be done here
        hideErrorLabels()
        setupErrorLabels()
        setupErrorTextFields()
        setupDelegates()
        self.setupDatePicker()
        self.setupEmail()
    }
    
    private func setupEmail() {
        if let email = UserDefaults.standard.string(forKey: UserKeys.email) {
            self.emailTextField.text = email
            self.emailTextField.isUserInteractionEnabled = false
        }
    }
    
    private func setupDelegates() {
        self.firstNameTextField.delegate = self
        self.lastNameTextField.delegate = self
        self.middleNmaeTextField.delegate = self
        self.genderTextField.delegate = self
        self.emailTextField.delegate = self
        self.dobTextField.delegate = self
        self.countryTextField.delegate = self
        self.nativeCountryTextField.delegate = self
        self.occupationTextField.delegate = self
        self.mobileNumberTextField.delegate = self
        self.provinceTextField.delegate = self
    }
    
    private func setupDatePicker() {
        self.datePicker.datePickerMode = .date
        self.dobTextField.inputView = datePicker
        datePicker.maximumDate = Date()
        self.datePicker.addTarget(self, action: #selector(handleDatePicker(sender:)), for: .valueChanged)
    }
    
    @objc private func handleDatePicker(sender: UIDatePicker) {
        let dateFormatter = DateFormatter()
//        test ccr
        dateFormatter.dateFormat = AppConstants.dateFormat
        self.dobTextField.text = dateFormatter.string(from: sender.date)
    }

    private func validate() {
        self.createModel()
        self.delegate?.addModel(model: self.kycForm1Model)
    }
    
    private func hideErrorLabels() {
        [firstNameErrorLabel, middleNameErrorLabel, lastNameErrorLabel, genderErrorLabel, dobErrorLabel, mobileNumberErrorLabel, emailErrorLabel, nativeCountryErrorLabel, countryErrorLabel, provinceErrorLabel, occupationErrorLabel].forEach({
            $0?.isHidden = true
        })
    }
    
    private func setupErrorLabels() {
        self.errorLabels = [firstNameErrorLabel, middleNameErrorLabel, lastNameErrorLabel, genderErrorLabel, dobErrorLabel, mobileNumberErrorLabel, emailErrorLabel, nativeCountryErrorLabel, nativeCountryErrorLabel, provinceErrorLabel, occupationErrorLabel, countryErrorLabel]
        
        self.errorLabels.forEach({
            $0.font = Constants.errorLabelFont
        })
        
        self.errorLabelsDict =
        [
            KycForm1FieldKeys.firstName: self.firstNameErrorLabel,
            KycForm1FieldKeys.middleName: self.middleNameErrorLabel,
            KycForm1FieldKeys.lastName: self.lastNameErrorLabel,
            KycForm1FieldKeys.gender: self.genderErrorLabel,
//            KycForm1FieldKeys.dob: self.dobErrorLabel,
            KycForm1FieldKeys.mobileNumber: self.mobileNumberErrorLabel,
            KycForm1FieldKeys.email: self.emailErrorLabel,
            KycForm1FieldKeys.nativeCountry: self.nativeCountryErrorLabel,
            KycForm1FieldKeys.country: self.countryErrorLabel,
            KycForm1FieldKeys.province: self.provinceErrorLabel,
            KycForm1FieldKeys.occupation: self.occupationErrorLabel
        ]
    }
    
    private func setupErrorTextFields() {
        
        self.textfields = [firstNameTextField, lastNameTextField, middleNmaeTextField, genderTextField, dobTextField, mobileNumberTextField, emailTextField, nativeCountryTextField, countryTextField, provinceTextField, occupationTextField]
        firstNameTextField.tag = 1
        middleNmaeTextField.tag = 2
        lastNameTextField.tag = 3
        genderTextField.tag = 4
        dobTextField.tag = 5
        mobileNumberTextField.tag = 6
        emailTextField.tag = 7
        nativeCountryTextField.tag = 8
        countryTextField.tag = 9
        provinceTextField.tag = 10
        occupationTextField.tag = 11
        
        
        self.errorTextFieldDict =
            [
                KycForm1FieldKeys.firstName: self.firstNameTextField,
                KycForm1FieldKeys.middleName: self.middleNmaeTextField,
                KycForm1FieldKeys.lastName: self.lastNameTextField,
                KycForm1FieldKeys.gender: self.genderTextField,
//                KycForm1FieldKeys.dob: self.dobTextField,
                KycForm1FieldKeys.mobileNumber: self.mobileNumberTextField,
                KycForm1FieldKeys.email: self.emailTextField,
                KycForm1FieldKeys.nativeCountry: self.nativeCountryTextField,
                KycForm1FieldKeys.country: self.countryTextField,
                KycForm1FieldKeys.province: self.provinceTextField,
                KycForm1FieldKeys.occupation: self.occupationTextField
        ]
    }
    
    private func showBorder(textfield :UITextField?) {
        guard let textfield = textfield else {return}
        textfield.layer.borderColor = Constants.stateRedColor.cgColor
        textfield.layer.borderWidth = Constants.errorBorderWidth
        textfield.layer.addShadow(with: Constants.stateRedColor)
    }
    
    private func show( error: String, label: UILabel?) {
        // scroll to the top of the view
        guard let label = label else {return}
        label.textColor = Constants.stateRedColor
        label.isHidden = false
        label.text = error
    }
}

// MARK: KycForm1ViewInterface
extension KycForm1ViewController: KycForm1ViewInterface {
    // todo remove this from this viper flow. its now in parent
    func show(result: (doesNotSucks: Bool, errorsDick: [String : String])) {
        var position = 11
        if result.doesNotSucks { // if isValid
            
            // its is not valid, lets go to security page only if continue button was tapped
            if self.continueActionInitiated {
                self.delegate?._continue(model: self.kycForm1Model)
            }
        }else {
            result.errorsDick.forEach({
                let label = errorLabelsDict[$0.key]
                self.show(error: $0.value, label: label)
                let textfield = errorTextFieldDict[$0.key]
                self.showBorder(textfield: textfield)
                let tag = (textfield?.tag ?? position)
                position = tag < position ? tag : position
                if let topMostTextField = self.textfields.filter({
                    $0.tag == tag
                }).first {
                    // Todo
                   // scroll to view here
                }
            })
        }
    }
    
    func show(model: KycModel) {
        self.delegate?.show(model: model)
        self.kycModel = model
    }
    
    func show(error: String) {
        self.alert(message: error)
    }
    
    func showLoading() {
        self.showProgressHud()
    }
    
    func hideLoading() {
        self.hideProgressHud()
    }
    
}

extension KycForm1ViewController: IndicatorInfoProvider {
    func indicatorInfo(for pagerTabStripController: PagerTabStripViewController) -> IndicatorInfo {
        return IndicatorInfo.init(title: "Personal")
    }
}


extension KycForm1ViewController: UITextFieldDelegate {
    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
         textField.layer.addShadow(with: Constants.clearColor)
        switch textField {
        case genderTextField:
            self.genderErrorLabel.isHidden = true
            genderTextField.layer.borderWidth = 0
            self.view.endEditing(true)
            self.showGenderPicker()
            return false
        case nativeCountryTextField:
            self.nativeCountryErrorLabel.isHidden = true
            nativeCountryTextField.layer.borderWidth = 0
            self.view.endEditing(true)
            self.showCountryPickerview()
            return false
        case provinceTextField:
            self.provinceErrorLabel.isHidden = true
            provinceTextField.layer.borderWidth = 0
            self.view.endEditing(true)
            self.showProviencePickerview()
            return false
        case occupationTextField:
            self.occupationErrorLabel.isHidden = true
            occupationTextField.layer.borderWidth = 0
            self.view.endEditing(true)
            self.showOccupationPickerView()
            return false
        default:
            return true
        }
    }
    
    
    func textFieldDidBeginEditing(_ textField: UITextField) {
        textField.layer.addShadow(with: Constants.clearColor)
        textField.layer.borderWidth = 0
        switch textField {
        case firstNameTextField:
            self.firstNameErrorLabel.isHidden = true
        case middleNmaeTextField:
            self.middleNameErrorLabel.isHidden = true
        case lastNameTextField:
            self.lastNameErrorLabel.isHidden = true
        case genderTextField:
            self.genderErrorLabel.isHidden = true
        case dobTextField:
            self.dobErrorLabel.isHidden = true
        case mobileNumberTextField:
            self.mobileNumberErrorLabel.isHidden = true
        case emailTextField:
            self.emailErrorLabel.isHidden = true
        case nativeCountryTextField:
            self.nativeCountryErrorLabel.isHidden = true
        case countryTextField:
            self.countryErrorLabel.isHidden = true
        case provinceTextField:
            self.provinceErrorLabel.isHidden = true
        case occupationTextField:
            self.occupationErrorLabel.isHidden = true
        default:
            break
        }
    }
}


extension KycForm1ViewController {
    private func showCountryPickerview() {
        let viewcontroller = UIStoryboard.init(name: "CountryPicker", bundle: nil).instantiateViewController(withIdentifier: "CountryPickerViewController") as! CountryPickerViewController
        let _countries = self.countries ?? []
        let data: [SendMoneyCountryViewModel] = _countries.map({
            let model = SendMoneyCountryViewModel()
            model.id = $0.id
            model.name = $0.text
//            model.code = $0.code
            return model
        })
        viewcontroller.data = data
        viewcontroller.doneAction = self.countrySelected
        viewcontroller.defaultSelectedData = [self.selectedCountry]
        viewcontroller.type = PickerTitle.country
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    
    func countrySelected(models: [SendMoneyCountryViewModel]) {
        self.selectedCountry = models.first
    }
    
    
    private func showGenderPicker() {
        let alertcontroller = UIAlertController.init(title: "Gender", message: nil, preferredStyle: .actionSheet)
        alertcontroller.view.tintColor = UIColor.init(hex: "#7b7a7a")
        let maleAction = UIAlertAction(title: Constants.male, style: .default, handler: { _ in
            self.genderTextField.text = Constants.male
        })
        
        let femaleAction = UIAlertAction(title: Constants.female, style: .default, handler: { _ in
            self.genderTextField.text = Constants.female
        })
        
        let otherAction = UIAlertAction(title: Constants.other, style: .default, handler: { _ in
            self.genderTextField.text = Constants.other
        })
        
        
        let cancelAction = UIAlertAction(title: Constants.cancelTitleString, style: .cancel, handler: nil)
        
        alertcontroller.addAction(maleAction)
        alertcontroller.addAction(femaleAction)
        alertcontroller.addAction(otherAction)
        alertcontroller.addAction(cancelAction)
        self.present(alertcontroller, animated: true, completion: nil)
    }
    
    private func showOccupationPickerView() {
        let viewcontroller = self.getPickerViewController()
        let occupations = self.occupations ?? []
        let names = occupations.compactMap({$0.text})
        viewcontroller.data = names
        viewcontroller.type = PickerTitle.occupation
        viewcontroller.doneAction = self.occupationSelected
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    private func getPickerViewController()-> ItemsPickerViewController  {
        return UIStoryboard.init(name: "ItemsPicker", bundle: nil).instantiateViewController(withIdentifier: "ItemsPickerViewController") as! ItemsPickerViewController
    }
    
    func occupationSelected(occupations: [String]) {
        let _occupation = self.occupations?.filter({($0.text ?? "") == (occupations.first ?? "") }).first
        self.selectedOccupation = _occupation
    }
    
    
    private func showProviencePickerview() {
        let viewcontroller = self.getPickerViewController()
        let proviences = self.proviences
        let names = (proviences ?? []).compactMap({$0.text})
        viewcontroller.data = names
        viewcontroller.type = PickerTitle.state
        viewcontroller.doneAction = self.provienceSelected
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    func provienceSelected(provience: [String]) {
        let _provience = (self.proviences ?? []).filter({
            ($0.text ?? "") == (provience.first ?? "")
        })

        self.selectedProvience = _provience.first
    }
}