//
//  DocumentControlViewController.swift
//  App
//
//  Created by James Magahern on 9/22/20.
//

import UIKit

class DocumentControlViewController: UIViewController
{
    let documentControlView = StackView<DocumentControlView>(dimension: .vertical)
    let fontSizeAdjustView = FontSizeAdjustView()
    let findOnPageControlView = DocumentControlView()
    let navigationControlView = NavigationControlsView()
    let settingsView = DocumentControlView()
    let readabilityView = DocumentControlView()
    let darkModeView = DocumentControlView()
    
    var observations: [NSKeyValueObservation] = []
    
    static public let preferredWidth = CGFloat(200.0)
    
    init(darkModeEnabled: Bool) {
        super.init(nibName: nil, bundle: nil)
        
        findOnPageControlView.label.text = "Find On Page"
        findOnPageControlView.imageView.image = UIImage(systemName: "magnifyingglass")
        
        settingsView.label.text = "Settings"
        settingsView.imageView.image = UIImage(systemName: "gear")
        
        readabilityView.label.text = "Reader Mode"
        readabilityView.imageView.image = UIImage(systemName: "doc.richtext")
        
        if darkModeEnabled {
            darkModeView.label.text = "Disable Dark Mode"
        } else {
            darkModeView.label.text = "Enable Dark Mode"
        }
        
        darkModeView.imageView.image = DarkModeControls.buttonImage(forDarkModeState: darkModeEnabled)
        
        documentControlView.addArrangedSubview(navigationControlView)
        documentControlView.addArrangedSubview(fontSizeAdjustView)
        documentControlView.addArrangedSubview(findOnPageControlView)
        documentControlView.addArrangedSubview(darkModeView)
        documentControlView.addArrangedSubview(readabilityView)
        
        documentControlView.addArrangedSubview(settingsView)
        
        for (i, view) in documentControlView.arrangedSubviews.enumerated() {
            view.drawsBottomSeparator = (i < documentControlView.arrangedSubviews.count - 1)
        }
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func loadView() {
        self.view = documentControlView
    }
    
    override var preferredContentSize: CGSize {
        get { documentControlView.sizeThatFits(CGSize(width: Self.preferredWidth, height: -1)) }
        set {}
    }
}