Theme, ThemeManager, Themeable

theme.swift

//
//  Theme.swift
//  SHSH Host
//
//  Created by ninja on 31/12/19.
//  Copyright © 2019 arx8x.net. All rights reserved.
//

import UIKit

enum ThemeAppearanceType
{
    case dark
    case light
    case neutral
}

class Theme
{
    var backgroundColor : UIColor
    let appearanceType : ThemeAppearanceType
    var cellColorMain : UIColor
    var cellColorAlt : UIColor
    var cellTextColor : UIColor
    var cellHighlightColor : UIColor
    var cellHighlightColorAlt : UIColor
    var textColor : UIColor
    var detailTextColor : UIColor
    var tabBarColor : UIColor?
    let blurAppearance : UIBlurEffect.Style
    var tintColor : UIColor
    var statusBarStyle : UIStatusBarStyle
    var statusBarColor : UIColor
    var statusBarAccentColor : UIColor
    var navBarColor : UIColor?
    var navBarTextColor : UIColor
    var navbarTitleTextAttributes : [NSAttributedString.Key : Any]
    var tabBarGlyphClor : UIColor
    var activityIndicatorStyle : UIActivityIndicatorView.Style
    var activityIndicatorColor : UIColor
    var keyboardAppearance : UIKeyboardAppearance
    var barStyle : UIBarStyle
    
    
    init(appearanceType type: ThemeAppearanceType, tintColor : UIColor = .systemTintBlue)
    {
        self.appearanceType = type
        self.tintColor = tintColor
        cellHighlightColor = self.tintColor
        cellHighlightColorAlt = self.tintColor
        tabBarGlyphClor = self.tintColor
        
        if appearanceType == .dark
        {
            backgroundColor = .black
            cellColorMain = .black
            cellColorAlt = cellColorMain.ligterColor(byFacor: 0.1)
            cellTextColor = .white
            textColor = .white
            detailTextColor = cellColorMain.darkerColor(byFacor: 0.35)
            if #available(iOS 13.0, *)
            {
                blurAppearance = .systemMaterialDark
            }
            else
            {
                blurAppearance = .dark
            }
            statusBarColor = .black
            statusBarStyle = .lightContent
            statusBarAccentColor = .white
            navBarTextColor = .white
            navbarTitleTextAttributes = [.foregroundColor: UIColor.white]
            activityIndicatorStyle = .white
            activityIndicatorColor = .white
            keyboardAppearance = .dark
            barStyle = .black
        }
        else
        {
            backgroundColor = .white
            cellColorMain = .white
            cellColorAlt = cellColorMain.darkerColor(byFacor: 0.10)
            cellTextColor = .notSoBlack
            textColor = .notSoBlack
            detailTextColor = .darkGray
            if #available(iOS 13.0, *)
            {
                blurAppearance = .systemMaterialLight
            }
            else
            {
                blurAppearance = .light
            }
            statusBarColor = .white
            statusBarStyle = .default
            statusBarAccentColor = .black
            navBarTextColor = .black
            navbarTitleTextAttributes = [.foregroundColor: UIColor.black]
            activityIndicatorStyle = .gray
            activityIndicatorColor = .gray
            keyboardAppearance = .light
            barStyle = .default
        }
    }
    
    static let amber : Theme =
    {
        () -> Theme in
        let theme = Theme.init(appearanceType: .light)
        theme.cellColorMain = UIColor(red:0.95, green:0.87, blue:0.74, alpha:1.0)
        theme.cellColorAlt = UIColor(red:0.98, green:0.95, blue:0.83, alpha:1.0)
        theme.cellTextColor = .brown
        theme.navBarColor = theme.cellColorAlt
        theme.tabBarColor = theme.navBarColor
        theme.navbarTitleTextAttributes = [.foregroundColor: UIColor.brown]
        theme.tintColor = .brown
        theme.backgroundColor = theme.cellColorMain
        theme.activityIndicatorColor = .brown
        return theme
    }()
}


//
//  ThemeManager.swift
//  SHSH Host
//
//  Created by ninja on 31/12/19.
//  Copyright © 2019 arx8x.net. All rights reserved.
//

import Foundation

class ThemeManager
{
    static let shared = ThemeManager()
    private(set) var theme = PreferenceManager.shared.themeForAppearanceType
    
    
    func applyTheme(theme: Theme)
    {
        self.theme = theme
        PreferenceManager.shared.saveCurrentAppearanceSelection()
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: "shsh.host.themeapplied"), object: nil, userInfo: ["theme":self.theme])
    }
}