mvm_core_ui/MVMCoreUI/Molecules/RadioButton.swift

//
//  RadioButton.swift
//  MVMCoreUI
//
//  Created by Suresh, Kamlesh on 4/9/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

@objcMembers open class RadioButton: ViewConstrainingView, FormValidationProtocol{

    var moleculeJson: [AnyHashable: Any]?
    var selectedRadioButton: MFRadioButton?
    var selectedValue: String?

    // MARK: - Inits
    public init() {
        super.init(frame: .zero)
    }
    
    public override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required public init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: DelegateObject?, additionalData: [AnyHashable: Any]?) {
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        self.moleculeJson = json
        
        // Configure class properties with JSON values
        guard let jsonDictionary = moleculeJson,
            let optionsList = jsonDictionary.optionalArrayForKey("optionsList") else {
            return
        }
    
        if let delegateObject = delegateObject as? MVMCoreUIDelegateObject {
            FormValidator.setupValidation(molecule: self, delegate: delegateObject.formValidationProtocol)
        }
        
        var items:[UIView] = []
        for option in optionsList {
            if let itemUI = createOptionItem(option as? [AnyHashable: Any]) {
                items.append(itemUI)
            }
        }
 
        let verticalSpace = MFStyler.defaultVerticalPadding(forSize: MVMCoreUIUtility.getWidth())
        StackableViewController.populateView(self,
                                             withUIArray: items) { (item) -> UIEdgeInsets in
                                                return UIEdgeInsets(top: verticalSpace,
                                                                    left: 0,
                                                                    bottom: 0,
                                                                    right: 0)
        }
    }
    
    func createOptionItem(_ optionJson: [AnyHashable: Any]?) -> UIView? {
        
        guard let json = optionJson else {
            return nil
        }
        
        let containerView = ViewConstrainingView.empty()
        let radioButton = MFRadioButton()
        radioButton.translatesAutoresizingMaskIntoConstraints = false
        containerView.addSubview(radioButton)
        
        let label = MFLabel.commonLabel()
        label.setWithJSON(json.dictionaryForKey(KeyLabel), delegateObject: nil, additionalData: nil)
        containerView.addSubview(label)
        
        radioButton.leftAnchor.constraint(equalTo: containerView.leftAnchor, constant: 0).isActive = true
        radioButton.topAnchor.constraint(greaterThanOrEqualTo: containerView.topAnchor, constant: PaddingOne).isActive = true
        containerView.bottomAnchor.constraint(greaterThanOrEqualTo: radioButton.bottomAnchor, constant: PaddingOne).isActive = true
        radioButton.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true

        label.leftAnchor.constraint(equalTo: radioButton.rightAnchor, constant: PaddingTwo).isActive = true
        label.rightAnchor.constraint(equalTo: containerView.rightAnchor, constant: 0).isActive = true
        label.topAnchor.constraint(greaterThanOrEqualTo: containerView.topAnchor, constant: PaddingOne).isActive = true
        label.bottomAnchor.constraint(greaterThanOrEqualTo: containerView.bottomAnchor, constant: PaddingOne).isActive = true
        label.centerYAnchor.constraint(equalTo: containerView.centerYAnchor).isActive = true
     
        addActionHandler(containerView, radioButton, json)
        return containerView
    }
    
    func addActionHandler(_ containerView: UIView, _ radioButton: MFRadioButton, _ optionJson: [AnyHashable: Any]) {
        let dummyButton = MFCustomButton(frame: .zero)
        dummyButton.translatesAutoresizingMaskIntoConstraints = false
        containerView.addSubview(dummyButton)
        NSLayoutConstraint.constraintPinSubview(toSuperview: dummyButton)
        containerView.bringSubviewToFront(dummyButton)
        
        dummyButton.add({ (button) in
            if let selectedbutton = self.selectedRadioButton {
                selectedbutton.isSelected = false
            }
            self.selectedValue = optionJson.optionalStringForKey(KeyValue)
            self.selectedRadioButton = radioButton
            self.selectedRadioButton?.isSelected = true
        }, for: .touchUpInside)
    }
    
    func getColor( _ json: [AnyHashable: Any], _ key: String) -> UIColor? {
        if let colorHex = json.optionalStringForKey(key) {
            return UIColor.mfGet(forHex: colorHex)
        } else {
            return nil
        }
    }
 
    open override func setupView() {
        super.setupView()
        self.translatesAutoresizingMaskIntoConstraints = false
    }
    
    // Used to check the validity of the field, to enable/disable the primary button.
    @objc public func isValidField() -> Bool {
        return selectedValue != nil
    }
    
    // The Field name key value pair for sending to server
    @objc public func formFieldName() -> String? {
        return moleculeJson?.stringForkey("fieldKey")
    }
    
    // The Feild value key value paid for sending to server
    @objc public func formFieldValue() -> String? {
        return selectedValue
    }
}