//
//  MessageViewIPAD.swift
//  PrivadoVPN
//
//  Created by Lizaveta Malinouskaya on 6.09.21.
//  Copyright © 2021 Privado LLC. All rights reserved.
//

import UIKit

class MessageViewIPAD: UIView, MessageViewInput {
    
    // MARK: - Constant
    enum Constant {
        enum Color {
            static let text = Colors.Message.text.color
            static let bg = Colors.Message.bg.color
        }
        enum Geometry {
            static let viewHeight: CGFloat = 46
        }
        enum Font {
            static let text = UIFont.primary(size: 15, weight: .semibold)
        }
    }
    
    // MARK: - Property
    
    private var backgroundView: UIView?
    private var messageLabel: UILabel?
    private let output: MessageViewOutput
    
    // MARK: - init
    
    public init(output: MessageViewOutput) {
        self.output = output
        super.init(frame: .zero)
        self.setupUI()
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // MARK: - UI
    
    private func setupUI() {
        self.setupSelf(with: self)
        self.setupBackgroundView(with: self)
        self.setupMessageLabel(with: self)
    }
    
    private func setupSelf(with container: UIView) {
        container.translatesAutoresizingMaskIntoConstraints = false
        self.isHidden = true
    }
    
    private func setupBackgroundView(with container: UIView) {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = Constant.Color.bg
        container.addSubview(view)
        self.backgroundView = view
        
        NSLayoutConstraint.activate([
            view.topAnchor.constraint(equalTo: container.topAnchor),
            view.leadingAnchor.constraint(equalTo: container.leadingAnchor),
            view.trailingAnchor.constraint(equalTo: container.trailingAnchor),
            view.heightAnchor.constraint(equalToConstant: Constant.Geometry.viewHeight)
        ])
    }
    
    private func setupMessageLabel(with container: UIView) {
        guard let center = self.backgroundView else { return }
        let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.textAlignment = .center
        label.font = Constant.Font.text
        label.textColor = Constant.Color.text
        label.isUserInteractionEnabled = true
        label.addGestureRecognizer(UITapGestureRecognizer(target: container, action: #selector(self.didTapView)))
        container.addSubview(label)
        self.messageLabel = label
        
        NSLayoutConstraint.activate([
            label.topAnchor.constraint(equalTo: container.topAnchor),
            label.bottomAnchor.constraint(equalTo: container.bottomAnchor),
            label.centerXAnchor.constraint(equalTo: container.centerXAnchor),
            label.centerYAnchor.constraint(equalTo: center.centerYAnchor)
        ])
        
    }
    
    @objc func didTapView() {
        self.output.didTap()
    }
    
    // MARK: - MessageViewInput
    func showMessage(text: String) {
        self.messageLabel?.text = text
    }
    
    func setVisibility(hidden: Bool) {
        self.fade(fadeIn: !hidden)
    }
}