/*
 * Copyright (c) 2017  STMicroelectronics – All rights reserved
 * The STMicroelectronics corporate logo is a trademark of STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this list of conditions
 *   and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice, this list of
 *   conditions and the following disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name nor trademarks of STMicroelectronics International N.V. nor any other
 *   STMicroelectronics company nor the names of its contributors may be used to endorse or
 *   promote products derived from this software without specific prior written permission.
 *
 * - All of the icons, pictures, logos and other images that are provided with the source code
 *   in a directory whose title begins with st_images may only be used for internal purposes and
 *   shall not be redistributed to any third party or modified in any way.
 *
 * - Any redistributions in binary form shall not include the capability to display any of the
 *   icons, pictures, logos and other images that are provided with the source code in a directory
 *   whose title begins with st_images.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */

import Foundation


/// Interface used to store and load the google key
public protocol BlueVoiceWebSocketParamDelegate {
    
    /// get the current key
    ///
    /// - Returns: current key or nil if not present
    func loadAsrKey()->BlueVoiceWebSocketASRKey?;
    
    /// save a new key
    ///
    /// - Parameter key: new key to store
    func storeAsrKey(_ key:BlueVoiceWebSocketASRKey)
}


/// Controller used to insert the google key
public class BlueVoiceWebSocketParamViewController : UIViewController,UITextFieldDelegate{
    @IBOutlet weak var mPasswordTextField: UITextField!
    @IBOutlet weak var mEndpointTextField: UITextField!
    @IBOutlet weak var mUserTextField: UITextField!
    
    public var delegate:BlueVoiceWebSocketParamDelegate?;
    
    public override func viewDidLoad() {
        super.viewDidLoad()
        mPasswordTextField.delegate=self;
        mEndpointTextField.delegate=self;
        mUserTextField.delegate=self;
    }
    
    public override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated);
        let conf = delegate?.loadAsrKey()
        if let conf = conf{
            mEndpointTextField.text = conf.endpoint;
            mUserTextField.text = conf.userName;
            mPasswordTextField.text = conf.password;
        }
    }
    
    /// called when the store button is clicked, save the current key and dismis
    /// the controlelr
    ///
    /// - Parameter sender: button pressed
    @IBAction func onSaveButtonClick(_ sender: UIButton) {
        if let endpoint = mEndpointTextField.text{
            delegate?.storeAsrKey(BlueVoiceWebSocketASRKey(endpoint: endpoint,
                                                           user: mUserTextField.text,
                                                           password: mPasswordTextField.text));
        }
        self.dismiss(animated: true, completion: nil);
    }
    
    
    /// Called when the cancel button is clicked, dismiss the controlelr
    ///
    /// - Parameter sender: button pressed
    @IBAction func onCancelButtonClick(_ sender: UIButton) {
        self.dismiss(animated: true, completion: nil);
    }
    
    /// hide the keyboard when the return is pressed
    public func textFieldShouldReturn(_ textField: UITextField) -> Bool{
        textField.resignFirstResponder();
        return false;
    }
    
    /// hide the keyboard if the use touch on the view
    public override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        self.view.endEditing(true);
        super.touchesBegan(touches, with: event);
    }
    
}
