vds_ios/VDS/Components/RadioBox/RadioBoxGroup.swift

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

import Foundation
import UIKit

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

public class RadioBoxGroupBase<GroupModelType: RadioBoxGroupModel, ModelHandlerType: RadioBoxBase<GroupModelType.SelectorModelType>>: SelectorGroupSelectedHandlerBase<GroupModelType, ModelHandlerType> {

    //--------------------------------------------------
    // 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 = .fillProportionally
                                
            } else {
                mainStackView.axis = .horizontal
                mainStackView.distribution = .fillEqually
            }
        }
    }
    
    open override func setup() {
        super.setup()
        isAccessibilityElement = true
        accessibilityTraits = .button
        addSubview(mainStackView)
        ensureDevice()
        mainStackView.topAnchor.constraint(equalTo: topAnchor).isActive = true
        mainStackView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
        mainStackView.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true
        mainStackView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
        
        NotificationCenter.default
            .publisher(for: UIDevice.orientationDidChangeNotification)
            .sink() { [weak self] _ in
                UIView.animate(withDuration: 1.0) {
                    self?.ensureDevice()
                }
            }.store(in: &subscribers)
    }
    
    open override func shouldUpdateView(viewModel: ModelType) -> Bool {
        let update = viewModel.selectedModel?.inputId != model.selectedModel?.inputId
        || viewModel.selectors.count != model.selectors.count
        || viewModel.surface != model.surface
        || viewModel.disabled != model.disabled
        return update
    }

    open override func updateView(viewModel: ModelType) {
        for selectorModel in viewModel.selectors {
            //see if view is there for the model
            if let foundSelectorView = findSelectorView(inputId: selectorModel.inputId) {
                foundSelectorView.set(with: selectorModel)
            } else {
                
                //create view
                let newSelectorView = createModelHandler(selector: selectorModel)
                
                self.selectorViews.append(newSelectorView)
                mainStackView.addArrangedSubview(newSelectorView)
            }
        }
    }
    
    public var selectedModelHandler: ModelHandlerType? {
        if let  index = selectorViews.firstIndex(where: { element in
            return element.isSelected == true
        }) {
            return selectorViews[index]
        } else {
            return nil
        }
    }
    
}