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

import Foundation
import UIKit
import Combine

/// Base Class used to build Views.
@objcMembers
@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
    
    /// 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()
    }
    
    //--------------------------------------------------
    // MARK: - Accessibility
    //--------------------------------------------------
    open var accessibilityAction: ((View) -> Void)?

    open override var isAccessibilityElement: Bool {
        get {
            var block: AXBoolReturnBlock?
            
//            if #available(iOS 17, *) {
//                 block = isAccessibilityElementBlock
//            }
            
            if block == nil {
                block = bridge_isAccessibilityElementBlock
            }
            
            if let block {
                return block()
            } else {
                return super.isAccessibilityElement
            }
        }
        set {
            super.isAccessibilityElement = newValue
        }
    }

    open override var accessibilityLabel: String? {
        get {
            var block: AXStringReturnBlock?
//            if #available(iOS 17, *) {
//                 block = accessibilityLabelBlock
//            }
            
            if block == nil {
                block = bridge_accessibilityLabelBlock
            }

            if let block {
                return block()
            } else {
                return super.accessibilityLabel
            }
        }
        set {
            super.accessibilityLabel = newValue
        }
    }
    
    open override var accessibilityHint: String? {
        get {
            var block: AXStringReturnBlock?
//            if #available(iOS 17, *) {
//                 block = accessibilityHintBlock
//            }
            
            if block == nil {
                block = bridge_accessibilityHintBlock
            }

            if let block {
                return block()
            } else {
                return super.accessibilityHint
            }
        }
        set {
            super.accessibilityHint = newValue
        }
    }
    
    open override var accessibilityValue: String? {
        get {
            var block: AXStringReturnBlock?
            
//            if #available(iOS 17, *) {
//                block = accessibilityHintBlock
//            }
            
            if block == nil {
                block = bridge_accessibilityValueBlock
            }
            
            if let block{
                return block()
            } else {
                return super.accessibilityValue
            }
        }
        set {
            super.accessibilityValue = newValue
        }
    }
    
    open override func accessibilityActivate() -> Bool {
        guard isEnabled, isUserInteractionEnabled else { return false }
        
//        if #available(iOS 17, *) {
//            if let block = accessibilityAction {
//                block(self)
//                return true
//            } else if let block = accessibilityActivateBlock {
//                return block()
//                
//            } else if let block = bridge_accessibilityActivateBlock {
//                return block()
//                
//            } else {
//                return true
//                
//            }
//
//        } else {
            if let block = accessibilityAction {
                block(self)
                return true

            } else if let block = bridge_accessibilityActivateBlock {
                return block()
                
            } else {
                return super.accessibilityActivate()
                
            }
//        }
    }

}