import UIKit
import GeneralUtils

class VCSendTraoDoi: UIViewController {
    @IBOutlet weak var edtTenCty: UITextField!
    @IBOutlet weak var edtPhone: UITextField!
    @IBOutlet weak var edtAdress: UITextField!
    @IBOutlet weak var edtContent: UITextViewCustom!
    
    static func getInstance() -> VCSendTraoDoi {
        let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let vcOpen = storyboard.instantiateViewController(withIdentifier: "VCSendTraoDoi") as! VCSendTraoDoi
        return vcOpen
    }

    override func viewDidLoad() {
        super.viewDidLoad()
//        registerKeyBoardEvent()
        addInputAccessoryForTextFields([edtTenCty, edtPhone, edtAdress, edtContent], dismissable: true, previousNextable: true) 
    }

    @IBAction func btnCancelClick(_ sender: Any) {
        _ = getVcRoot()?.changeCurrentController(VCInputId.getInstance())
    }

    @IBAction func btnSendClick(_ sender: Any) {
        _ = getVcRoot()?.changeCurrentController(VCNoiDungTraoDoi.getInstance())
    }

//    @IBAction func edtActionTrigerClick(_ sender: Any) {
//    }

    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
//        unregisterKeyBoardEvent()
    }

    func getVcRoot() -> VCRoot? {
        return self.parent as? VCRoot
    }
    
    //region ======= keyboard process ====
    private func registerKeyBoardEvent() {
        NotificationCenter.default.setObserver(self, selector: #selector(VCInputId.keyboardWillShow(_:)), name: NSNotification.Name.UIKeyboardWillShow.rawValue, object: nil);
        NotificationCenter.default.setObserver(self, selector: #selector(VCInputId.keyboardWillHide(_:)), name: NSNotification.Name.UIKeyboardWillHide.rawValue, object: nil);
    }

    private func unregisterKeyBoardEvent() {
        NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillHide, object: nil)
    }

    func keyboardWillShow(_ notification: Notification) {
//        guard let userInfo = notification.userInfo else {
//            return
//        }
//        guard let keyboardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as AnyObject).cgRectValue else {
//            return
//        }
//        guard let duration = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as AnyObject).doubleValue else {
//            return
//        }
//        topMargin.constant = 50 - keyboardFrame.height
//        UIView.animate(withDuration: duration, delay: 0.0, usingSpringWithDamping: 1.0, initialSpringVelocity: 0.5, options: .curveLinear, animations: { () -> Void in
//            self.view.layoutIfNeeded()
//        }, completion: nil)
    }

    func keyboardWillHide(_ notification: Notification) {
//        guard let userInfo = notification.userInfo else {
//            return
//        }
//        guard let duration = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as AnyObject).doubleValue else {
//            return
//        }
//        topMargin.constant = 50
//        UIView.animate(withDuration: duration, delay: 0.0, usingSpringWithDamping: 1.0, initialSpringVelocity: 0.5, options: .curveLinear, animations: { () -> Void in
//            self.view.layoutIfNeeded()
//        }, completion: nil)
    }
    //endregion
}