//
//  MainViewController.swift
//  Witit-iOS
//
//  Created by Nikolas Andryuschenko on 8/2/16.
//  Copyright © 2016 Witit Co. All rights reserved.
//

import UIKit
import Firebase

class MainViewController: UIViewController {

    @IBOutlet weak var usernameLabel: UILabel!
    @IBOutlet weak var emailTextField: UITextField!
    @IBOutlet weak var passwordTextField: UITextField!

    @IBOutlet weak var logoutButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()

        if let user = FIRAuth.auth()?.currentUser {

            self.logoutButton.alpha = 1.0
            self.usernameLabel.text = user.email


        } else {

            self.logoutButton.alpha = 0.0
            self.usernameLabel.text = ""

        }

        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func createAccountButtonTapped(sender: UIButton) {

        if self.emailTextField.text == "" || self.passwordTextField.text == "" {

            // put alert controllers in error handeling swift file
            let alertController = UIAlertController(title: "Error", message: "Please enter email and password.", preferredStyle: .Alert)
            let defaultAction = UIAlertAction(title: "Ok", style: .Cancel, handler: nil)
            alertController.addAction(defaultAction)

            self.presentViewController(alertController, animated: true, completion: nil)
        } else {

            FIRAuth.auth()?.createUserWithEmail(self.emailTextField.text!, password: self.passwordTextField.text!, completion: { (user, error) in

                if error == nil {

                    self.logoutButton.alpha = 0
                    self.usernameLabel.text = user!.email
                    self.emailTextField.text = ""
                    self.passwordTextField.text = ""

                } else {

                    //Change location of alertcontroller
                    let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .Alert)
                    let defaultAction = UIAlertAction(title: "Ok", style: .Cancel, handler: nil)
                    alertController.addAction(defaultAction)


                }
            })

        }

    }

    @IBAction func loginButtonTapped(sender: UIButton) {

        if self.emailTextField.text == "" || self.passwordTextField.text == "" {

            // put alert controllers in error handeling swift file
            let alertController = UIAlertController(title: "Error", message: "Please enter email and password.", preferredStyle: .Alert)
            let defaultAction = UIAlertAction(title: "Ok", style: .Cancel, handler: nil)
            alertController.addAction(defaultAction)

            self.presentViewController(alertController, animated: true, completion: nil)
        } else {

            FIRAuth.auth()?.signInWithEmail(self.emailTextField.text!, password: self.emailTextField.text!, completion: { (user, error) in

                if error == nil {

                    self.logoutButton.alpha = 0
                    self.usernameLabel.text = user!.email
                    self.emailTextField.text = ""
                    self.passwordTextField.text = ""

                } else {

                    //Change location of alertcontroller
                    let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .Alert)
                    let defaultAction = UIAlertAction(title: "Ok", style: .Cancel, handler: nil)
                    alertController.addAction(defaultAction)


                }


            })

        }


    }

    @IBAction func logoutActionButtonTapped(sender: UIButton) {

        try! FIRAuth.auth()?.signOut()
        self.usernameLabel.text = ""
        self.logoutButton.alpha = 0
        self.emailTextField.text = ""
        self.passwordTextField.text = ""


    }


}