//
//  Scroller.swift
//  MVMCoreUI
//
//  Created by Scott Pfeil on 7/23/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

@objcMembers open class Scroller: ViewConstrainingView {
    public let scrollView = UIScrollView(frame: .zero)
    public let contentView = MVMCoreUICommonViewsUtility.commonView()

    override open func setupView() {
        super.setupView()
        guard scrollView.superview == nil else {
            return
        }
        translatesAutoresizingMaskIntoConstraints = false
        scrollView.translatesAutoresizingMaskIntoConstraints = false
        addSubview(scrollView)
        pinView(toSuperView: scrollView)
        scrollView.addSubview(contentView)
        NSLayoutConstraint.constraintPinSubview(toSuperview: contentView)
        let constraint = contentView.widthAnchor.constraint(equalTo: scrollView.widthAnchor, multiplier: 1.0)
        constraint.priority = UILayoutPriority(rawValue: 999)
        constraint.isActive = true
    }
    
    open override func setWithJSON(_ json: [AnyHashable : Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable : Any]?) {
        guard let json = json, let moleculeJSON = json.optionalDictionaryForKey(KeyMolecule) else {
            return
        }
        if molecule == nil {
            if let moleculeView = MVMCoreUIMoleculeMappingObject.shared()?.createMolecule(forJSON: moleculeJSON, delegateObject: delegateObject, constrainIfNeeded: true) {
                contentView.addSubview(moleculeView)
                pinView(toSuperView: moleculeView)
                molecule = moleculeView
            }
        } else {
            molecule?.setWithJSON(moleculeJSON, delegateObject: delegateObject, additionalData: additionalData)
        }
    }
}