//
//  StandardFooterView.swift
//  MVMCoreUI
//
//  Created by Scott Pfeil on 3/11/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

public class StandardFooterView: ViewConstrainingView {
    let twoButtonView = TwoButtonView(frame: .zero)
    var textButton = MFTextButton(nil, constrainHeight: true, forWidth: MVMCoreUIUtility.getWidth())
    var spaceBetweenButtons: NSLayoutConstraint?
    var leftConstraintTwoButton: NSLayoutConstraint?
    var rightConstraintTwoButton: NSLayoutConstraint?
    var leftConstraintTextButton: NSLayoutConstraint?
    var rightConstraintTextButton: NSLayoutConstraint?
    var centerAlignTextButton: NSLayoutConstraint?
    private var heightConstraint: NSLayoutConstraint?
    
    public override func updateView(_ size: CGFloat) {
        super.updateView(size)
        twoButtonView.updateView(size)
        textButton.updateView(size)
        setSpacing()
    }
    
    public override func setupView() {
        super.setupView()
        guard subviews.count == 0 else {
            return
        }
        translatesAutoresizingMaskIntoConstraints = false
        backgroundColor = .clear
        clipsToBounds = true
        setContentHuggingPriority(UILayoutPriority.required, for: NSLayoutConstraint.Axis.vertical)
        setContentCompressionResistancePriority(UILayoutPriority.required, for: NSLayoutConstraint.Axis.vertical)

        addSubview(twoButtonView)
        addSubview(textButton)
        
        topPin = twoButtonView.topAnchor.constraint(equalTo: topAnchor, constant: PaddingDefaultVerticalSpacing)
        topPin?.isActive = true
        
        spaceBetweenButtons = textButton.topAnchor.constraint(equalTo: twoButtonView.bottomAnchor, constant: PaddingTwo)
        spaceBetweenButtons?.isActive = true
        
        leftConstraintTwoButton = twoButtonView.leftAnchor.constraint(equalTo: layoutMarginsGuide.leftAnchor)
        leftConstraintTwoButton?.isActive = true
        
        rightConstraintTwoButton = layoutMarginsGuide.rightAnchor.constraint(equalTo: twoButtonView.rightAnchor)
        rightConstraintTwoButton?.isActive = true
        
        leftConstraintTextButton = textButton.leftAnchor.constraint(greaterThanOrEqualTo: layoutMarginsGuide.leftAnchor)
        leftConstraintTextButton?.isActive = true
        
        rightConstraintTextButton = layoutMarginsGuide.rightAnchor.constraint(greaterThanOrEqualTo: textButton.rightAnchor)
        rightConstraintTextButton?.isActive = true
        
        centerAlignTextButton = textButton.centerXAnchor.constraint(equalTo: centerXAnchor)
        centerAlignTextButton?.isActive = true
        
        bottomPin = bottomAnchor.constraint(equalTo: textButton.bottomAnchor, constant: PaddingDefaultVerticalSpacing)
        bottomPin?.isActive = true
        
        heightConstraint = heightAnchor.constraint(equalToConstant: 0)
    }
    
    public func setSpacing() {
        if !(twoButtonView.heightConstraint?.isActive ?? false) && textButton.title(for: UIControl.State.normal)?.count ?? 0 > 0 {
            spaceBetweenButtons?.constant = PaddingTwo
            show()
        } else if !(twoButtonView.heightConstraint?.isActive ?? false) || textButton.title(for: UIControl.State.normal)?.count ?? 0 > 0 {
            spaceBetweenButtons?.constant = 0
            show()
        } else {
            hide()
        }
    }
    
    public override func show() {
        super.show()
        heightConstraint?.isActive = false
        topPin?.isActive = true
        layoutIfNeeded()
    }
    
    public override func hide() {
        super.hide()
        heightConstraint?.isActive = true
        topPin?.isActive = false
        layoutIfNeeded()
    }
    
    open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: DelegateObject?, additionalData: [AnyHashable: Any]?) {
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        if let colorString = json?.optionalStringForKey(KeyBackgroundColor) {
            backgroundColor = .mfGet(forHex: colorString)
        }
        twoButtonView.setWithJSON(json?.optionalDictionaryForKey("twoButtonView"), delegateObject: delegateObject, additionalData: additionalData)
        textButton.setWithJSON(json?.optionalDictionaryForKey("textButton"), delegateObject: delegateObject, additionalData: additionalData)
    }
}