//
//  RadioBoxGroup.swift
//  VDS
//
//  Created by Matt Bruce on 8/23/22.
//

import Foundation
import UIKit

@objc(VDSRadioBoxGroup)
public class RadioBoxGroup: RadioBoxGroupBase<RadioBox> {
    
    public override func didSelect(_ selectedControl: RadioBox) {
        let oldSelectedControl = selectorViews.filter { $0.isSelected == true }.first
        oldSelectedControl?.toggle()
        selectedControl.toggle()
        valueChanged()
    }
}

public class RadioBoxGroupBase<HandlerType: RadioBoxBase>: SelectorGroupSelectedHandlerBase<HandlerType> {
    
    //--------------------------------------------------
    // MARK: - Public Properties
    //--------------------------------------------------
    public override var selectorViews: [HandlerType] {
        didSet {
            for selector in selectorViews {
                if !mainStackView.arrangedSubviews.contains(selector) {
                    selector
                        .publisher(for: .touchUpInside)
                        .sink { [weak self] handler in
                            self?.didSelect(handler)
                        }.store(in: &subscribers)
                    mainStackView.addArrangedSubview(selector)
                }
            }
        }
    }
    
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    private var mainStackView: UIStackView = {
        return UIStackView().with {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.spacing = 12
        }
    }()
    
    //--------------------------------------------------
    // MARK: - Overrides
    //--------------------------------------------------
    private func ensureDevice() {
        if UIDevice.isIPad {
            mainStackView.axis = .horizontal
            mainStackView.distribution = .fillEqually
        } else {
            if UIDevice.current.orientation.isPortrait || UIDevice.current.orientation == .unknown {
                mainStackView.axis = .vertical
                mainStackView.distribution = .fill
                                
            } else {
                mainStackView.axis = .horizontal
                mainStackView.distribution = .fillEqually
            }
        }
    }
    
    open override func setup() {
        super.setup()
        isAccessibilityElement = true
        accessibilityTraits = .button
        addSubview(mainStackView)
        ensureDevice()
        mainStackView.pinToSuperView()
        
        NotificationCenter.default
            .publisher(for: UIDevice.orientationDidChangeNotification)
            .sink() { [weak self] _ in
                UIView.animate(withDuration: 1.0) {
                    self?.ensureDevice()
                }
            }.store(in: &subscribers)
    }
}