//
//  TwoButtonView.swift
//  MVMCoreUI
//
//  Created by Scott Pfeil on 3/21/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

@objcMembers open class TwoButtonView: ButtonView {
    open var secondaryButton: PrimaryButton?
    open var viewForButtons: UIView?
    public var heightConstraint: NSLayoutConstraint?
    
    public override init() {
        super.init(frame: .zero)
    }
    
    required public init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    public override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    public func setDefaultCustom() {
        primaryButton?.setAsStandardCustom()
        secondaryButton?.setAsSecondaryCustom()
    }
    
    // MARK: - MVMCoreViewProtocol
    open override func updateView(_ size: CGFloat) {
        super.updateView(size)
        MVMCoreDispatchUtility.performBlock(onMainThread: {
            self.secondaryButton?.updateView(size)
        })
    }
    
    // MARK: - MVMCoreUIMoleculeViewProtocol
    open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: DelegateObject?, additionalData: [AnyHashable: Any]?) {
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        if let backgroundColorString = json?.optionalStringForKey(KeyBackgroundColor) {
            backgroundColor = UIColor.mfGet(forHex: backgroundColorString)
        }
        let primaryButtonMap = json?.optionalDictionaryForKey("primaryButton")
        let secondaryButtonMap = json?.optionalDictionaryForKey("secondaryButton")
        set(primaryButtonJSON: primaryButtonMap, secondaryButtonJSON: secondaryButtonMap, delegateObject: delegateObject, additionalData: additionalData)
    }
    
    // MARK: - Constraining
    override func setupButton() {
        setupWithTwoButtons()
    }
    
    func createPrimaryButton() {
        if primaryButton == nil {
            primaryButton = PrimaryButton.button()
        }
    }
    
    func createSecondaryButton() {
        if secondaryButton == nil {
            secondaryButton = PrimaryButton.button()
            secondaryButton?.bordered = true
        }
    }
    
    func removeButtons() {
        viewForButtons?.removeFromSuperview()
        primaryButton?.removeFromSuperview()
        secondaryButton?.removeFromSuperview()
        viewForButtons = nil
        secondaryButton = nil
        primaryButton = nil
    }
    
    open func setupConstraintsForViewWithButtons() {
        guard let viewForButtons = viewForButtons, let primaryButton = primaryButton, let secondaryButton = secondaryButton else {
            return
        }
        viewForButtons.addSubview(primaryButton)
        viewForButtons.addSubview(secondaryButton)
        secondaryButton.widthAnchor.constraint(equalTo: primaryButton.widthAnchor, multiplier: 1).isActive = true
        secondaryButton.topAnchor.constraint(equalTo: viewForButtons.topAnchor).isActive = true
        primaryButton.topAnchor.constraint(equalTo: viewForButtons.topAnchor).isActive = true
        viewForButtons.bottomAnchor.constraint(equalTo: secondaryButton.bottomAnchor).isActive = true
        viewForButtons.bottomAnchor.constraint(equalTo: primaryButton.bottomAnchor).isActive = true
        NSLayoutConstraint.activate(NSLayoutConstraint.constraints(withVisualFormat: "H:|-0-[leftButton]-10-[rightButton]-0-|", options: NSLayoutConstraint.FormatOptions.alignAllCenterY, metrics: nil, views: ["leftButton": secondaryButton, "rightButton": primaryButton]))
    }
    
    func setupWithTwoButtons() {
        guard self.viewForButtons == nil else {
            return
        }
        let viewForButtons = MVMCoreUICommonViewsUtility.commonView()
        addSubview(viewForButtons)
        self.viewForButtons = viewForButtons

        setupConstraints(forView: viewForButtons)
        alignCenter()
        
        createPrimaryButton()
        createSecondaryButton()
        setupConstraintsForViewWithButtons()
    }
    
    open func setupWithPrimaryButton() {
        guard self.primaryButton == nil else {
            return
        }
        createPrimaryButton()
        if let primaryButton = primaryButton {
            addSubview(primaryButton)
            setupConstraints(forView: primaryButton)
            alignCenter()
        }
    }
    
    // Sets up the number of buttons based on the maps. Doesn't set the buttons with the maps because legacy code handles differently from modern code...
    func setupUI(withPrimaryButtonMap primaryButtonMap: [AnyHashable: Any]?, secondaryButtonMap: [AnyHashable: Any]?, legacy: Bool) {
        if primaryButtonMap != nil, secondaryButtonMap != nil {
            heightConstraint?.isActive = false
            if primaryButton == nil || secondaryButton == nil {
                removeButtons()
                setupWithTwoButtons()
            }
        } else if primaryButtonMap != nil || (secondaryButtonMap != nil && legacy) {
            // Only legacy sets up the primary button with a secondary map
            heightConstraint?.isActive = false
            if primaryButton == nil || secondaryButton != nil {
                removeButtons()
                setupWithPrimaryButton()
            }
        } else {
            removeButtons()
            if heightConstraint == nil {
                heightConstraint = heightAnchor.constraint(equalToConstant: 0)
                heightConstraint?.isActive = true
            }
        }
    }
    
    open func set(primaryButtonJSON: [AnyHashable: Any]?, secondaryButtonJSON: [AnyHashable: Any]?, delegateObject: DelegateObject?, additionalData: [AnyHashable: Any]?) {
        setupUI(withPrimaryButtonMap: primaryButtonJSON, secondaryButtonMap: secondaryButtonJSON, legacy: false)
        setDefaultCustom()
        primaryButton?.setWithJSON(primaryButtonJSON, delegateObject: delegateObject, additionalData: additionalData)
        secondaryButton?.setWithJSON(secondaryButtonJSON, delegateObject: delegateObject, additionalData: additionalData)
    }
    
    // MARK: - Legacy
    
    public convenience init(buttonSmall small: Bool, enabled: Bool) {
        self.init()
        removeButtons()
        setupWithPrimaryButton()
        primaryButton?.setAsSmall(small)
        primaryButton?.isEnabled = enabled
    }
    
    public func hidePrimaryLeftButton() {
        guard let secondaryButton = secondaryButton, !secondaryButton.isHidden else {
            return
        }
        secondaryButton.isHidden = true
        if let primaryButton = primaryButton {
            primaryButton.removeFromSuperview()
            viewForButtons?.addSubview(primaryButton)
            NSLayoutConstraint.constraintPinSubview(toSuperview: primaryButton)
        }
    }
    
    public func hidePrimaryRightButton() {
        guard let primaryButton = primaryButton, !primaryButton.isHidden else {
            return
        }
        primaryButton.isHidden = true
        if let secondaryButton = secondaryButton {
            secondaryButton.removeFromSuperview()
            viewForButtons?.addSubview(secondaryButton)
            NSLayoutConstraint.constraintPinSubview(toSuperview: secondaryButton)
        }
    }
    
    public func showBothPrimaryButtons() {
        primaryButton?.isHidden = false
        secondaryButton?.isHidden = false
        if let primaryButton = primaryButton, let secondaryButton = secondaryButton {
            primaryButton.removeFromSuperview()
            secondaryButton.removeFromSuperview()
            setupConstraintsForViewWithButtons()
        }
    }
    
    public func hideBothPrimaryButtons() {
        primaryButton?.isHidden = true
        secondaryButton?.isHidden = true
    }
}

// MARK: - Deprecate
extension TwoButtonView {
    @available(*, deprecated)
    open func setup(primaryButtonMap: [AnyHashable: Any]?, secondaryButtonMap: [AnyHashable: Any]?, actionDelegate: NSObjectProtocol?, additionalData: [AnyHashable: Any]?, buttonDelegate: Any?) {
        setupUI(withPrimaryButtonMap: primaryButtonMap, secondaryButtonMap: secondaryButtonMap, legacy: true)
        if primaryButtonMap != nil, secondaryButtonMap != nil {
            primaryButton?.setWithActionMap(primaryButtonMap, actionDelegate: actionDelegate as? MVMCoreActionDelegateProtocol & NSObjectProtocol, additionalData: additionalData, buttonDelegate: buttonDelegate as? ButtonDelegateProtocol)
            secondaryButton?.setWithActionMap(secondaryButtonMap, actionDelegate: actionDelegate as? MVMCoreActionDelegateProtocol & NSObjectProtocol, additionalData: additionalData, buttonDelegate: buttonDelegate as? ButtonDelegateProtocol)
        } else if primaryButtonMap != nil {
            primaryButton?.setWithActionMap(primaryButtonMap, actionDelegate: actionDelegate as? MVMCoreActionDelegateProtocol & NSObjectProtocol, additionalData: additionalData, buttonDelegate: buttonDelegate as? ButtonDelegateProtocol)
            primaryButton?.bordered = false
        } else if secondaryButtonMap != nil {
            primaryButton?.setWithActionMap(secondaryButtonMap, actionDelegate: actionDelegate as? MVMCoreActionDelegateProtocol & NSObjectProtocol, additionalData: additionalData, buttonDelegate: buttonDelegate as? ButtonDelegateProtocol)
            primaryButton?.bordered = true
        }
    }
    
    @available(*, deprecated)
    open func setup(withButtonMap buttonMap: [AnyHashable: Any]?, actionDelegate: NSObjectProtocol?, additionalData: [AnyHashable: Any]?, buttonDelegate: Any?) {
        let secondaryButtonMap = buttonMap?.optionalDictionaryForKey(KeySecondaryButton)
        let primaryButtonMap = buttonMap?.optionalDictionaryForKey(KeyPrimaryButton)
        setup(primaryButtonMap: primaryButtonMap, secondaryButtonMap: secondaryButtonMap, actionDelegate: actionDelegate, additionalData: additionalData, buttonDelegate: buttonDelegate)
    }
    
    @available(*, deprecated)
    public convenience init(buttonSmall small: Bool, buttonMap: [AnyHashable: Any]?, actionDelegate: NSObjectProtocol?, additionalData: [AnyHashable: AnyHashable]?, buttonDelegate: Any?) {
        self.init()
        setup(withButtonMap: buttonMap, actionDelegate: actionDelegate, additionalData: additionalData, buttonDelegate: buttonDelegate)
        primaryButton?.setAsSmall(small)
        secondaryButton?.setAsSmall(small)
    }
    
    @available(*, deprecated)
    public convenience init(primaryButtonMap: [AnyHashable: Any]?, secondaryButtonMap: [AnyHashable: Any]?, actionDelegate: NSObjectProtocol?, additionalData: [AnyHashable: Any]?, buttonDelegate: Any?) {
        self.init()
        setup(primaryButtonMap: primaryButtonMap, secondaryButtonMap: secondaryButtonMap, actionDelegate: actionDelegate, additionalData: additionalData, buttonDelegate: buttonDelegate)
    }
}