//
//  Copyright © 2018 Square, Inc.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import UIKit

class ActionButton: UIButton {
    init(backgroundColor: UIColor, title: String?, image: UIImage?) {
        super.init(frame: .zero)

        commonInit()

        self.backgroundColor = backgroundColor
        setTitle(title, for: .normal)
        setImage(image, for: .normal)
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        commonInit()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        commonInit()
    }

    private func commonInit() {
        setTitleColor(.white, for: .normal)

        titleLabel?.font = UIFont.systemFont(ofSize: 18, weight: .semibold)
        titleLabel?.textAlignment = .center
        titleLabel?.adjustsFontSizeToFitWidth = true
        translatesAutoresizingMaskIntoConstraints = false

        contentEdgeInsets = UIEdgeInsets(top: 20, left: 20, bottom: 20, right: 20)
    }

    override func layoutSubviews() {
        super.layoutSubviews()

        layer.cornerRadius = bounds.height / 2
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesBegan(touches, with: event)

        alpha = 0.7
    }

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesEnded(touches, with: event)

        alpha = 1.0
    }

    override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesCancelled(touches, with: event)

        alpha = 1.0
    }
}