//
//  TextLinkCaret.swift
//  VDS
//
//  Created by Matt Bruce on 11/1/22.
//

import Foundation
import UIKit
import VDSColorTokens
import VDSFormControlsTokens
import Combine

public enum TextLinkIconPosition: String, CaseIterable {
    case left, right
}

@objc(VDSTextLinkCaret)
open class TextLinkCaret: Control {
    
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    private var heightConstraint: NSLayoutConstraint?
    private var label = Label()
    
    //--------------------------------------------------
    // MARK: - Properties
    //--------------------------------------------------
    open var text: String? { didSet { didChange() } }
    
    open var iconPosition: TextLinkIconPosition = .right { didSet { didChange() } }
    
    private var height: CGFloat {
        44
    }

    //--------------------------------------------------
    // 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: - Public Functions
    //--------------------------------------------------
    open override func initialSetup() {
        super.initialSetup()
    }
    
    open override func setup() {
        super.setup()
        
        addSubview(label)
        
        //add tapGesture to self
        publisher(for: UITapGestureRecognizer()).sink { [weak self] _ in
            self?.sendActions(for: .touchUpInside)
        }.store(in: &subscribers)

        //pin stackview to edges
        label.topAnchor.constraint(equalTo: topAnchor).isActive = true
        label.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
        label.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true
        label.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
        
        heightAnchor.constraint(equalToConstant: height).isActive = true
    }

    open override func reset() {
        super.reset()
        accessibilityCustomActions = []
        accessibilityTraits = .staticText
    }
    
    //--------------------------------------------------
    // MARK: - Overrides
    //--------------------------------------------------
    open override func updateView() {
        label.surface = surface
        label.disabled = disabled
        label.typograpicalStyle = TypographicalStyle.BoldBodyLarge
        label.text = text ?? ""
    }

}