//
//  Switch.swift
//  MVMCoreUI
//
//  Created by Priya on 5/6/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

public class Switch: ViewConstrainingView, FormValidationProtocol {
    var aSwitch = UISwitch()
    var label = Label()
    var mfTextButton = MFTextButton()
    var isRequired: Bool?  = false
    var onTintColor: UIColor? = .clear
    var offTintColor: UIColor? = .clear
    var delegate: DelegateObject?
    
    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 setAsMolecule() {
        super.setAsMolecule()
    }

    @objc func switchChanged(mySwitch: UISwitch) {
        let formValidator = (self.delegate as? MVMCoreUIDelegateObject)?.formValidationProtocol?.formValidatorModel?()
        formValidator?.enableByValidation()
    }

    open override func setupView() {
        super.setupView()
        aSwitch.onTintColor = onTintColor
        
        aSwitch.addTarget(self, action: #selector(Switch.switchChanged(mySwitch:)), for: .valueChanged)
        mfTextButton =  MFTextButton(nil, constrainHeight: true, forWidth: CGFloat.leastNormalMagnitude)
        
        addSubview(aSwitch)
        addSubview(label)
        addSubview(mfTextButton)
        
        label.translatesAutoresizingMaskIntoConstraints = false
        aSwitch.translatesAutoresizingMaskIntoConstraints = false
        mfTextButton.translatesAutoresizingMaskIntoConstraints = false;
        setupConstraints(forView: self)
    }
    
    public override func updateView(_ size: CGFloat) {
        super.updateView(size)
        label.updateView(size)
        mfTextButton.updateView(size)
    }
    
    open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: DelegateObject?, additionalData: [AnyHashable: Any]?) {
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        isRequired = json?[KeyRequired] as? Bool
        self.delegate = delegateObject
        if let dict = json?.optionalDictionaryForKey("label") {
            label.setWithJSON(dict, delegateObject: delegateObject, additionalData: additionalData)
        }
        
        if let dict = json?.optionalDictionaryForKey("textButton") {
            mfTextButton.setWithJSON(dict, delegateObject: delegateObject, additionalData: additionalData)
        }
        
        if  let delegateObject = delegateObject as? MVMCoreUIDelegateObject {
            FormValidator.setupValidation(molecule: self, delegate: delegateObject.formValidationProtocol)
        }
        
        if let onColorString = json?.optionalStringForKey("onTintColor") {
            onTintColor = .mfGet(forHex: onColorString)
        }
        if let offColorString = json?.optionalStringForKey("offTintColor") {
            offTintColor = .mfGet(forHex: offColorString)
        }
        aSwitch.onTintColor = onTintColor
        aSwitch.isOn = json?.optionalBoolForKey("state") ?? false
    }
    
    func setupConstraints(forView view: UIView) {
        NSLayoutConstraint.constraintPinRightSubview(aSwitch, rightConstant: 0)
        NSLayoutConstraint.constraintPinLeftSubview(label, leftConstant: 0)
        NSLayoutConstraint.constraintPinSubview(aSwitch, pinTop: true, topConstant: 0, topRelation: .equal, pinBottom: true, bottomConstant: 0, bottomRelation: .greaterThanOrEqual, pinLeft: false, leftConstant: 0, leftRelation: .equal, pinRight: false, rightConstant: 0, rightRelation: .equal)
        NSLayoutConstraint.constraintPinTopSubview(label, topConstant: 0)
        NSLayoutConstraint(pinFirstView: label, toSecondView: aSwitch, withConstant: PaddingOne, directionVertical: false)?.isActive = true
        NSLayoutConstraint(pinFirstView: label, toSecondView: mfTextButton, withConstant: PaddingOne, directionVertical: true)?.isActive = true
         NSLayoutConstraint.constraintPinLeftSubview(mfTextButton, leftConstant: 0)
        NSLayoutConstraint.constraintPinBottomSubview(mfTextButton, bottomConstant: 0)
    }

    public func isValidField() -> Bool {
        return (isRequired == false) ? true : aSwitch.isOn
    }
    
    public func formFieldName() -> String? {
        return json?.optionalStringForKey(KeyFieldKey)
    }
    
    public func formFieldValue() -> Any? {
        return aSwitch.isOn
    }
    
    public override func needsToBeConstrained() -> Bool {
        return true
    }
    
    public override func moleculeAlignment() -> UIStackView.Alignment {
        return UIStackView.Alignment.leading
    }

}