//
//  Control.swift
//  VDS
//
//  Created by Matt Bruce on 7/22/22.
//

import Foundation
import UIKit
import Combine

/// Base Class used to build Views.
@objc(VDSView)
open class View: UIView, ViewProtocol, UserInfoable {
    
    //--------------------------------------------------
    // MARK: - Initializers
    //--------------------------------------------------
    required public init() {
        super.init(frame: .zero)
        initialSetup()
    }

    public override init(frame: CGRect) {
        super.init(frame: .zero)
        initialSetup()
    }
    
    public required init?(coder: NSCoder) {
        super.init(coder: coder)
        initialSetup()
    }
    
    //--------------------------------------------------
    // MARK: - Combine Properties
    //--------------------------------------------------
    open var subscribers = Set<AnyCancellable>()
    
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    private var initialSetupPerformed = false
    
    //--------------------------------------------------
    // MARK: - Public Properties
    //--------------------------------------------------
    open var shouldUpdateView: Bool = true
    
    open var shouldUpdateAccessibility: Bool = true

    /// Dictionary for keeping information for this Control use only Primitives.
    open var userInfo = [String: Primitive]()
    
    open var surface: Surface = .light { didSet { setNeedsUpdate() } }
    
    open var isEnabled: Bool = true { didSet { setNeedsUpdate() } }
        
    //--------------------------------------------------
    // MARK: - Lifecycle
    //--------------------------------------------------
    open func initialSetup() {
        if !initialSetupPerformed {
            initialSetupPerformed = true
            setup()
            setNeedsUpdate()
       }
    }
    
    open func setup() {
        backgroundColor = .clear
        translatesAutoresizingMaskIntoConstraints = false
        insetsLayoutMarginsFromSafeArea = false
    }
    
    open func updateView() { }
    
    open func updateAccessibility() {
        if isEnabled {
            accessibilityTraits.remove(.notEnabled)
        } else {
            accessibilityTraits.insert(.notEnabled)
        }
    }
        
    open func reset() {
        backgroundColor = .clear
        surface = .light
        isEnabled = true
    }
    
    open override func layoutSubviews() {
        super.layoutSubviews()
        setNeedsUpdate()
    }
    
}