LONDON-IOS/GMERemittance/Module/MessageCompose/User Interface/View/MessageComposeViewController.swift

//
//  MessageComposeViewController.swift
//  GMERemittance
//
//  Created by gme_2 on 02/10/2018.
//Copyright © 2018 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

class MessageComposeViewController: UIViewController {
    
    struct StringConstants {
         let headerText = "We are always there to help you."
         let submitText = "submit_text".localized()
         let cancelText = "cancel_text".localized()
         let subjectAmendmentText = "Request For Amendment"
         let subjectCancelText = "Request For Cancellation"
         let requestMessagePlaceHolderText = "Your request here"
    }
    
    // MARK: IBOutlets
    
    @IBOutlet weak var headerLabel: UILabel!
    @IBOutlet weak var submitButton: UIButton!
    @IBOutlet weak var cancelButton: UIButton!
    @IBOutlet weak var textFieldSubject: UITextField!
    @IBOutlet weak var textViewMessage: UITextView!
    

    // MARK: Properties
    var type: MailBoxType?
    var controlNO: String?
    var transactionId: String?
    var presenter: MessageComposeModuleInterface?

    
    // MARK: VC's Life cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.setup()
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.setupNormalNavigation()
        self.navigationItem.title = "Support"
    }
    
    // MARK: IBActions
    
    @IBAction func cancelMessage(_ sender: Any) {
        navigationController?.popViewController(animated: true)
        dismiss(animated: true, completion: nil)
    }
    
    // MARK: Other Functions
    
    private func setup() {
        // all setup should be done here
       self.textViewMessage.text = StringConstants().requestMessagePlaceHolderText
        textViewMessage.textColor = UIColor.lightGray
        textViewMessage.layer.borderWidth = 0.3
        textViewMessage.layer.borderColor = UIColor.lightGray.cgColor
        textViewMessage.layer.backgroundColor = UIColor.white.cgColor
        textViewMessage.delegate = self
        let barbutton = UIBarButtonItem.init(image: #imageLiteral(resourceName: "backIconBlack"), style: .plain, target: self, action: #selector(self.cancelMessage(_:)))
        self.navigationItem.leftBarButtonItem = barbutton
        setupSubject()
        
        configureText()
        
    }
    
    private func configureText() {
        self.headerLabel.text = StringConstants().headerText
        self.submitButton.setTitle(StringConstants().submitText, for: UIControlState.normal)
        self.cancelButton.setTitle(StringConstants().cancelText, for: UIControlState.normal)
    }
    
    private func setupSubject() {
        if let _type = self.type {
            switch _type {
            case .cancel:
                self.textFieldSubject.text = "Request For Cancellation"
            case .edit:
                self.textFieldSubject.text = "Request For Amendment"
            }
        }
        
        self.textFieldSubject.isUserInteractionEnabled = false
    }
    
    
    @IBAction func submit(_ sender: UIButton) {
        let subject = self.textFieldSubject.text!
        let body = self.textViewMessage.text ?? ""
        let controlNo = self.controlNO ?? ""
        let transactionId = self.transactionId ?? ""
        
        if let _type = self.type {
            switch _type {
            case .cancel:
                self.presenter?.cancel(control: controlNo, transId: transactionId, subject: subject, body: body)
            case .edit:
                self.presenter?.edit(control: controlNo, transId: transactionId, subject: subject, body: body)
            }
        }
    }
 
}

// MARK: MessageComposeViewInterface
extension MessageComposeViewController: MessageComposeViewInterface {
    func show(model: SuccessMessage) {
        self.alert(message: model.message, title: "Success") {
            self.presenter?.dismiss()
        }
    }
    
    func show(error: String) {
        self.alert(message: error)
    }
}

extension MessageComposeViewController: UITextViewDelegate {
    func textViewDidBeginEditing(_ textView: UITextView) {
        if textView.textColor == UIColor.lightGray {
            textView.text = nil
            textView.textColor = UIColor.init(hex: "#4a4a4a")
        }
    }
    
    func textViewDidEndEditing(_ textView: UITextView) {
        if textViewMessage.text.isEmpty {
            textViewMessage.text = "Your request here"
            textViewMessage.textColor = UIColor.lightGray
        }
    }
}