//
//  RadioButtonWithLabel.swift
//  MVMCoreUI
//
//  Created by Suresh, Kamlesh on 10/21/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

@objcMembers public class RadioButtonWithLabel: ViewConstrainingView {

    public let radioButton = RadioButton()
    var delegateObject: MVMCoreUIDelegateObject?
    var dummyButton: MFCustomButton?
    let label = Label()

    // 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 setupView() {
        super.setupView()
        guard subviews.count == 0 else {
            return
        }

        translatesAutoresizingMaskIntoConstraints = false
        radioButton.translatesAutoresizingMaskIntoConstraints = false
        addSubview(radioButton)

        isAccessibilityElement = true
        accessibilityTraits = .none
        accessibilityHint = MVMCoreUIUtility.hardcodedString(withKey: "radio_action_hint")

        radioButton.leftAnchor.constraint(equalTo: layoutMarginsGuide.leftAnchor, constant: 0).isActive = true
        radioButton.topAnchor.constraint(greaterThanOrEqualTo: topAnchor, constant: PaddingOne).isActive = true
        bottomAnchor.constraint(greaterThanOrEqualTo: radioButton.bottomAnchor, constant: PaddingOne).isActive = true
        radioButton.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true

        if let rightView = createRightView() {
            addSubview(rightView)
            rightView.leftAnchor.constraint(equalTo: radioButton.rightAnchor, constant: PaddingHorizontalBetweenRelatedItems).isActive = true
            rightView.rightAnchor.constraint(equalTo: layoutMarginsGuide.rightAnchor, constant: 0).isActive = true

            var constraint = rightView.topAnchor.constraint(equalTo: topAnchor, constant: PaddingOne)
            constraint.priority = .defaultHigh
            constraint.isActive = true

            constraint = bottomAnchor.constraint(equalTo: rightView.bottomAnchor, constant: PaddingOne)
            constraint.priority = .defaultHigh
            constraint.isActive = true
        }
        addActionHandler()
    }

    func createRightView() -> ViewConstrainingView? {
        let rightView = ViewConstrainingView(constrainingView: label)
        return rightView
    }

    func addActionHandler() {

        guard dummyButton == nil else {
            return
        }

        let dummyButton = MFCustomButton(frame: .zero)
        self.dummyButton = dummyButton
        dummyButton.translatesAutoresizingMaskIntoConstraints = false
        addSubview(dummyButton)
        NSLayoutConstraint.constraintPinSubview(toSuperview: dummyButton)
        bringSubviewToFront(dummyButton)

        dummyButton.add({ [weak self] (button) in
            self?.tapAction()
            }, for: .touchUpInside)
    }

    func tapAction() {
        radioButton.tapAction()
        changeAccessibilityLabel()
    }
}

// MARK: - MVMCoreUIMoleculeViewProtocol
extension RadioButtonWithLabel {
    @objc open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable: Any]?) {
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        self.delegateObject = delegateObject
        radioButton.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        label.setWithJSON(json?.optionalDictionaryForKey(KeyLabel),
                          delegateObject: delegateObject,
                          additionalData: additionalData)
        changeAccessibilityLabel()
    }
}

// MARK: Accessibility
extension RadioButtonWithLabel {
    func changeAccessibilityLabel()  {
        let stateString = radioButton.isSelected ? "radio_selected_state" : "radio_not_selected_state"
        let localizedStringState = MVMCoreUIUtility.hardcodedString(withKey: stateString) ?? ""
        let accebilityString = (label.accessibilityLabel ?? (json?.optionalStringForKey("accessibilityText") ?? ""))
            + (MVMCoreUIUtility.hardcodedString(withKey: "radio_desc_state") ?? "") + localizedStringState
        accessibilityLabel = accebilityString
    }
}