//
//  KillSwitchHelpViewController.swift
//  PrivadoVPN
//
//  Created by Juraldinio on 3/10/21.
//  Copyright © 2021 Privado LLC. All rights reserved.
//

import Foundation
import AppKit

final class KillSwitchHelpViewController: NSViewController {
    
    private enum Constants {
        static let width: CGFloat = 300.0
        static let height: CGFloat = 100.0
        static let leading: CGFloat = 5.0
        static let top: CGFloat = 10.0
        
        static let between: CGFloat = 4.0
        static let bottom: CGFloat = 6.0
        
        static let textColor = NSColor(calibratedRed: 0.4721604586, green: 0.5212603211, blue: 0.7244773507, alpha: 1)
        static let backgroundColor = NSColor(red: 21, green: 25, blue: 53)
    }
    
    private let helpTitle: String
    private let helpDescription: String
    
    // MARK: - Init
    
    init(title: String, description: String) {
        
        self.helpTitle = title
        self.helpDescription = description
        
        super.init(nibName: nil, bundle: nil)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // MARK: - LifeCycle
    
    override func loadView() {
        let view = NSView(frame: CGRect(x: 0, y: 0, width: Constants.width, height: Constants.height))
        view.autoresizesSubviews = true
        view.translatesAutoresizingMaskIntoConstraints = false
        view.wantsLayer = true
        view.layer?.backgroundColor = Constants.backgroundColor.cgColor
        self.view = view
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.setupView()
    }
    
    // MARK: - Private
    
    private func setupView() {
        
        NSLayoutConstraint.activate([
            self.view.widthAnchor.constraint(equalToConstant: Constants.width),
            self.view.heightAnchor.constraint(equalToConstant: Constants.height)
        ])
        
        let titleField = NSTextField(frame: .zero)
        titleField.translatesAutoresizingMaskIntoConstraints = false
        titleField.isBezeled = false
        titleField.isEditable = false
        titleField.drawsBackground = false
        titleField.textColor = .white
        if let font = titleField.font {
            titleField.font = NSFont(name: font.fontName, size: 14)
        }
        
        self.view.addSubview(titleField)
        NSLayoutConstraint.activate([
            titleField.topAnchor.constraint(equalTo: self.view.topAnchor, constant: Constants.top),
            titleField.leadingAnchor.constraint(equalTo: self.view.leadingAnchor, constant: Constants.leading),
            titleField.trailingAnchor.constraint(equalTo: self.view.trailingAnchor)
        ])
        
        let descriptionField = NSTextField(frame: .zero)
        descriptionField.translatesAutoresizingMaskIntoConstraints = false
        descriptionField.isBezeled = false
        descriptionField.isEditable = false
        descriptionField.drawsBackground = false
        descriptionField.textColor = Constants.textColor
        if let font = descriptionField.font {
            descriptionField.font = NSFont(name: font.fontName, size: 12)
        }
        
        self.view.addSubview(descriptionField)
        NSLayoutConstraint.activate([
            descriptionField.topAnchor.constraint(equalTo: titleField.bottomAnchor, constant: Constants.between),
            descriptionField.leadingAnchor.constraint(equalTo: self.view.leadingAnchor, constant: Constants.leading),
            descriptionField.trailingAnchor.constraint(equalTo: self.view.trailingAnchor, constant: Constants.leading),
            descriptionField.bottomAnchor.constraint(equalTo: self.view.bottomAnchor, constant: -Constants.bottom)
        ])
        
        titleField.stringValue = self.helpTitle
        descriptionField.stringValue = self.helpDescription
    }
    
}