//
//  Clickable.swift
//  VDS
//
//  Created by Matt Bruce on 3/29/23.
//

import Foundation
import UIKit
import Combine

public protocol Clickable: ViewProtocol {
    /// Sets the primary Subscriber used for the UIControl event .touchUpInside.
    var onClickSubscriber: AnyCancellable? { get set }
}

extension Clickable where Self: UIControl {
    /// Allows the setting of a completion block against the onClickSubscriber cancellable.  This will
    /// completion block will get executed against the UIControl publisher for the 'touchUpInside' action.
    public var onClick: ((Self) -> ())? {
        get { return nil }
        set {
            onClickSubscriber?.cancel()
            if let newValue {
                onClickSubscriber = publisher(for: .touchUpInside)
                    .sink { [weak self] c in
                        guard let self, self.isEnabled else { return }
                        newValue(c)
                    }
            } else {
                onClickSubscriber = nil
            }
            setNeedsUpdate()
        }
    }
}

extension Clickable where Self: UIView {
    /// Allows the setting of a completion block against the onClickSubscriber cancellable.  This will
    /// completion block will get executed against the UIControl publisher for the 'touchUpInside' action.
    public var onClick: ((Self) -> ())? {
        get { return nil }
        set {
            onClickSubscriber?.cancel()
            if let newValue {
                onClickSubscriber = publisher(for: UITapGestureRecognizer())
                    .sink { [weak self] _ in
                        guard let self, self.isEnabled else { return }
                        newValue(self)
                    }
            } else {
                onClickSubscriber = nil
            }
            setNeedsUpdate()
        }
    }
}