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

import UIKit

class EditReciepientViewController: UIViewController {
   
    struct StringConstants {
        let headerText = "who_to_send_text".localized()
        let firstNameText = "first_name_text".localized()
        let middleNameText = "enter_receiver_middlename_text".localized()
        let lastNameText = "last_name_text".localized()
        let countryNameText = "country_text".localized()
        let stateText = "state_text".localized()
        let districtText = "district_text".localized()
        let addressText = "address_text".localized()
        let relationText = "relation_text".localized()
        let mobileText = "mobile_number_text".localized()
        let transferText = "transfer_reason_text".localized()
        let saveText = "save_text".localized()
        // placeholder
         let firstnamePlaceholder = "placeholder_enter_receiver_firstname_text".localized()
         let lastnamePlaceholder = "placeholder_enter_receiver_middle_text".localized()
         let middlenamePlaceholder = "placeholder_enter_receiver_lastname_text".localized()
         let countryPlaceholder = "placeholder_select_country_text".localized()
         let statePlaceholder = "state_placeholder_text".localized()
         let districtPlaceholder = "district_placeholder_text".localized()
         let addressPlaceholder = "placeholder_enter_receiver_address_text".localized()
         let relationPlaceholder = "placeholder_select_relation_text".localized()
         let mobilePlaceholder = "placeholder_enter_reciever_mobile_number_text".localized()
         let transferPlaceholder = "placeholder_select_transfer_reason_text".localized()
    
    }
    
    // MARK: IBOutlets
    @IBOutlet weak var firstNameTextField: UITextField!
    @IBOutlet weak var middleNameTextField: UITextField!
    @IBOutlet weak var lastNameTextField: UITextField!
    @IBOutlet weak var countryTextField: UITextField!
    @IBOutlet weak var stateProvinceTextField: UITextField!
    @IBOutlet weak var districtTextField: UITextField!
    @IBOutlet weak var addressTextField: UITextField!
    @IBOutlet weak var relationTextField: UITextField!
    @IBOutlet weak var mobileTextField: UITextField!
    @IBOutlet weak var emailTextField: UITextField!
    @IBOutlet weak var transferReasonTextField: UITextField!
    @IBOutlet weak var saveButton: UIButton!
    @IBOutlet weak var provienceStackView: UIStackView!
    @IBOutlet weak var districtStackView: UIStackView!
    
    
    // titles
    @IBOutlet weak var headerTItleLabel: UILabel!
    @IBOutlet weak var firstNameTitleLabel: UILabel!
    @IBOutlet weak var middleNameTitleLabel: UILabel!
    @IBOutlet weak var lastNametitleLabel: UILabel!
    @IBOutlet weak var countryNameTitleLabel: UILabel!
    @IBOutlet weak var stateTitleLabel: UILabel!
    @IBOutlet weak var districtTitleLabel: UILabel!
    @IBOutlet weak var addressTitleLabel: UILabel!
    @IBOutlet weak var relationTitleLabel: UILabel!
    @IBOutlet weak var mobileTitleLabel: UILabel!
    @IBOutlet weak var transferTitleLabel: UILabel!
    
    
    // MARK: Properties
    
    var presenter: EditReciepientModuleInterface?
    var countries: [SendMoneyCountryViewModel]?
    var transferReasons: [SendMoneyTransferReasonViewModel]?
    var relations: [SendMoneyRelationViewModel]?
    var reciepient: EditRecipientRecipientViewModel? {
        didSet {
            self.populateInformations()
        }
    }
    
    var selectedCountry: SendMoneyCountryViewModel? {
        didSet {
            self.countryTextField.text = selectedCountry?.name
            let shouldShowProvienceField = (selectedCountry?.proviencesRequired ?? "" ) == "true"
            self.provienceStackView.isHidden = !shouldShowProvienceField
            self.districtStackView.isHidden = !shouldShowProvienceField
            self.reciepient?.countryId = self.selectedCountry?.id
             self.reciepient?.country = self.selectedCountry?.name
        }
    }
    
    var selectedProvience: SendMoneyProvienceViewModel? {
        didSet {
            self.stateProvinceTextField.text = selectedProvience?.name
            self.reciepient?.stateId = self.selectedProvience?.id
        }
    }
    
    var selectedDistrict: SendMoneyDistrictViewModel? {
        didSet {
            self.districtTextField.text = selectedDistrict?.name
            self.reciepient?.districtId = self.selectedDistrict?.id
        }
    }
    
    var selectedRelation: SendMoneyRelationViewModel? {
        didSet {
            self.relationTextField.text = selectedRelation?.title
            self.reciepient?.relationId = self.selectedRelation?.id
        }
    }
    
    var selectedTransferReason: SendMoneyTransferReasonViewModel? {
        didSet {
            self.transferReasonTextField.text = selectedTransferReason?.title
            self.reciepient?.reasonId = selectedTransferReason?.id
        }
    }
    
    // MARK: VC's Life cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.setup()
        self.setupDelegates()
        self.setupTargets()
        self.presenter?.viewIsReady()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.navigationItem.title = "Edit Receipient"
    }
    
    // MARK: IBActions
    @IBAction func save(_ sender: UIButton) {
        self.view.endEditing(true)
        if let reciepient = self.reciepient {
            self.presenter?.save(model: reciepient)
        }
    }
    // MARK: Other Functions
    
    
    private func setup() {
        // all setup should be done here
        self.setupNavigation()
        self.configureView()
        self.configureLanguage()
    }
    
    private func configureLanguage() {
        self.headerTItleLabel.text = StringConstants().headerText
        self.firstNameTitleLabel.text = StringConstants().firstNameText
        self.middleNameTitleLabel.text = StringConstants().middleNameText
        self.lastNametitleLabel.text = StringConstants().lastNameText
        self.countryNameTitleLabel.text = StringConstants().countryNameText
        self.stateTitleLabel.text = StringConstants().stateText
        self.districtTitleLabel.text = StringConstants().districtText
        self.addressTitleLabel.text = StringConstants().addressText
        self.relationTitleLabel.text = StringConstants().relationText
        self.mobileTitleLabel.text = StringConstants().mobileText
        self.transferTitleLabel.text = StringConstants().transferText
        saveButton.setTitle(StringConstants().saveText, for: .normal)
        
        // placeholders
        
        self.firstNameTextField.placeholder = StringConstants().firstnamePlaceholder
        self.middleNameTextField.placeholder = StringConstants().middlenamePlaceholder
        self.lastNameTextField.placeholder = StringConstants().lastnamePlaceholder
        self.countryTextField.placeholder = StringConstants().countryPlaceholder
        self.stateProvinceTextField.placeholder = StringConstants().statePlaceholder
        self.districtTextField.placeholder = StringConstants().districtPlaceholder
        self.addressTextField.placeholder = StringConstants().addressPlaceholder
        self.relationTextField.placeholder = StringConstants().relationPlaceholder
        self.mobileTextField.placeholder = StringConstants().mobilePlaceholder
        self.transferReasonTextField.placeholder = StringConstants().transferPlaceholder
    }
    
    private func configureView() {
        self.provienceStackView.isHidden = true
        self.districtStackView.isHidden = true
    }
    
    private func setupDelegates() {
        self.countryTextField.delegate = self
        self.stateProvinceTextField.delegate = self
        self.districtTextField.delegate = self
        self.relationTextField.delegate = self
        self.transferReasonTextField.delegate = self
    }
    
    private func setupTargets() {
        [firstNameTextField, middleNameTextField, lastNameTextField, countryTextField, stateProvinceTextField, districtTextField, addressTextField, relationTextField, mobileTextField, emailTextField, transferReasonTextField].forEach({
            $0?.addTarget(self, action: #selector(self.textFieldChanged(sender:)), for: UIControlEvents.editingChanged)
        })
    }
    
    @objc private func textFieldChanged(sender: UITextField) {
        switch sender {
        case firstNameTextField:
            self.reciepient?.firstName = firstNameTextField.text!
        case middleNameTextField:
            self.reciepient?.middleName = middleNameTextField.text!
        case lastNameTextField:
            self.reciepient?.lastName = lastNameTextField.text!
        case addressTextField:
            self.reciepient?.address = addressTextField.text!
        case mobileTextField:
            self.reciepient?.mobileNumber = mobileTextField.text!
        case emailTextField:
            self.reciepient?.email = emailTextField.text!
        default:
            break
        }
    }
    
    private func populateInformations() {
        self.firstNameTextField.text = self.reciepient?.firstName
        self.middleNameTextField.text = self.reciepient?.middleName
        self.lastNameTextField.text = self.reciepient?.lastName
        let country = self.countries?.filter({
            $0.name  == self.reciepient?.country
        }).first?.name
        self.countryTextField.text = country
        self.addressTextField.text = reciepient?.address
        let relation = self.relations?.filter({
            $0.title == self.reciepient?.relation
        }).first?.title
        self.relationTextField.text = relation
        self.mobileTextField.text = self.reciepient?.mobileNumber
        self.emailTextField.text = self.reciepient?.email
        let transferReason = self.transferReasons?.filter({
            $0.title == self.reciepient?.reason
        }).first?.title
        
        self.transferReasonTextField.text = transferReason
    }
    
    private func setupNavigation() {
        self.navigationItem.backBarButtonItem?.image =
            #imageLiteral(resourceName: "backIconBlack")
        self.navigationController?.navigationBar.tintColor = UIColor.black
    }
    
    private func showCountryPickerview() {
        let viewcontroller = UIStoryboard.init(name: "CountryPicker", bundle: nil).instantiateViewController(withIdentifier: "CountryPickerViewController") as! CountryPickerViewController
        viewcontroller.data = self.countries ?? []
        viewcontroller.doneAction = self.countrySelected
        viewcontroller.defaultSelectedData = [self.selectedCountry]
        viewcontroller.type = PickerTitle.country
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    private func getPickerViewController()-> ItemsPickerViewController  {
        return UIStoryboard.init(name: "ItemsPicker", bundle: nil).instantiateViewController(withIdentifier: "ItemsPickerViewController") as! ItemsPickerViewController
    }
    
    private func showProviencePickerview() {
        let viewcontroller = self.getPickerViewController()
        let proviences = self.selectedCountry?.proviences ?? []
        let names = proviences.compactMap({$0.name})
        viewcontroller.data = names
        viewcontroller.type = PickerTitle.state
        viewcontroller.doneAction = self.provienceSelected
        viewcontroller.defaultSelectedData = [self.selectedProvience?.name ?? ""]
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    private func showDistrictPickerview() {
        let viewcontroller = self.getPickerViewController()
        let districts = self.selectedProvience?.districts ?? []
        let names = districts.compactMap({$0.name})
        viewcontroller.data = names
        viewcontroller.type = PickerTitle.district
        viewcontroller.doneAction = self.districtSelected
        viewcontroller.defaultSelectedData = [self.selectedDistrict?.name ?? ""]
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    private func showRelationPickerView() {
        let viewcontroller = self.getPickerViewController()
        let relations = self.relations ?? []
        let names = relations.compactMap({$0.title})
        viewcontroller.data = names
        viewcontroller.type = PickerTitle.relation
        viewcontroller.doneAction = self.relationSelected
        viewcontroller.defaultSelectedData = [self.selectedRelation?.title ?? ""]
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    private func showTransferReasonPickerView() {
        let viewcontroller = self.getPickerViewController()
        let transferReasons = self.transferReasons ?? []
        let names = transferReasons.compactMap({$0.title})
        viewcontroller.data = names
        viewcontroller.type = PickerTitle.transferReasons
        viewcontroller.doneAction = self.transferReasonSelected
        viewcontroller.defaultSelectedData = [self.selectedTransferReason?.title ?? ""]
        self.present(viewcontroller, animated: true, completion: nil)
    }
    
    func transferReasonSelected(reasons: [String]) {
        let _reason = self.transferReasons?.filter({($0.title ?? "") == (reasons.first ?? "") }).first
        self.selectedTransferReason = _reason
    }
    
    func relationSelected(relations: [String]) {
        let _relations = self.relations?.filter({($0.title ?? "") == (relations.first ?? "") }).first
        self.selectedRelation = _relations
    }
    
    func districtSelected(district: [String]) {
        let _district = (self.selectedProvience?.districts ?? []).filter({
            ( $0.name ?? "" ) == ( district.first ?? "" )
        }).first
        self.selectedDistrict = _district
        
    }
    
    func provienceSelected(provience: [String]) {
        let _provience = (self.selectedCountry?.proviences ?? []).filter({
            ($0.name ?? "") == (provience.first ?? "")
        })
        self.selectedProvience = _provience.first
    }
    
    func countrySelected(models: [SendMoneyCountryViewModel]) {
        self.selectedCountry = models.first
    }
    
    func showLoading() {
        self.showProgressHud()
    }
    
    func hideLoading() {
        self.hideProgressHud()
    }
    
    func show(error: String) {
        self.alert(message: error)
    }
    
    
    
}

// MARK: EditReciepientViewInterface
extension EditReciepientViewController: EditReciepientViewInterface {
    func show(countries: [SendMoneyCountryViewModel]) {
        self.countries = countries
    }
    
    func show(transferReasons: [SendMoneyTransferReasonViewModel]) {
        self.transferReasons = transferReasons
    }
    
    func show(relations: [SendMoneyRelationViewModel]) {
        self.relations = relations
    }
    
    func show(recipient: EditRecipientRecipientViewModel) {
        self.reciepient = recipient
    }
}

extension EditReciepientViewController: UITextFieldDelegate {
    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        switch textField {
        case countryTextField:
            showCountryPickerview()
            return false
        case stateProvinceTextField:
            self.showProviencePickerview()
            return false
        case districtTextField:
            self.showDistrictPickerview()
            return false
        case relationTextField:
            self.showRelationPickerView()
            return false
        case transferReasonTextField:
            self.showTransferReasonPickerView()
            return false
        default:
            return true
        }
    }
}