mvm_core_ui/MVMCoreUI/Molecules/MoleculeContainer.swift

//
//  MoleculeContainer.swift
//  MVMCoreUI
//
//  Created by Scott Pfeil on 12/12/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

open class MoleculeContainer: Container {
    
    /// Can be overriden to change how the molecule is added to the hierarchy.
    public func addMolecule(_ molecule: UIView) {
        addAndContain(molecule)
    }

    override public func setWithJSON(_ json: [AnyHashable : Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable : Any]?) {
        guard let moleculeJSON = json?.optionalDictionaryForKey(KeyMolecule) else {
            super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
            return
        }
        if view == nil {
            if let molecule = MVMCoreUIMoleculeMappingObject.shared()?.createMolecule(forJSON: moleculeJSON, delegateObject: delegateObject, constrainIfNeeded: false) {
                addAndContain(molecule)
            }
        } else {
            (view as? MVMCoreUIMoleculeViewProtocol)?.setWithJSON?(moleculeJSON, delegateObject: delegateObject, additionalData: additionalData)
        }
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
    }
    
    public override func setWithModel(_ model: MoleculeProtocol?, _ delegateObject: MVMCoreUIDelegateObject?, _ additionalData: [AnyHashable: Any]?) {
        if let casteModel = model as? MoleculeContainerModel {
            if view != nil {
                (view as? ModelMoleculeViewProtocol)?.setWithModel(casteModel.molecule, delegateObject, additionalData)
            } else {
                if let molecule = MVMCoreUIMoleculeMappingObject.shared()?.createMolecule(casteModel.molecule, delegateObject) {
                    addMolecule(molecule)
                }
            }
        }
        super.setWithModel(model, delegateObject, additionalData)
    }
    
    public override static func nameForReuse(_ model: MoleculeProtocol?, _ delegateObject: MVMCoreUIDelegateObject?) -> String? {
        guard let containerModel = model as? MoleculeContainerModel,
            let moleculeClass = MVMCoreUIMoleculeMappingObject.shared()?.getMoleculeClass(containerModel.molecule) as? ModelMoleculeViewProtocol.Type,
            let moleculeName = moleculeClass.nameForReuse(containerModel.molecule, delegateObject) else {
                return "\(model?.moleculeName ?? "moleculeContainer")<>"
        }
        return "\(model?.moleculeName ?? "moleculeContainer")<\(moleculeName)>"
    }
    
    public override class func estimatedHeight(forRow molecule: MoleculeProtocol?, delegateObject: MVMCoreUIDelegateObject?) -> CGFloat? {
        guard let containerModel = molecule as? MoleculeContainerModel else { return 0 }
        guard let moleculeClass = MVMCoreUIMoleculeMappingObject.shared()?.getMoleculeClass(containerModel.molecule) as? ModelMoleculeViewProtocol.Type,
        let moleculeHeight = moleculeClass.estimatedHeight(forRow: containerModel.molecule, delegateObject: delegateObject) else {
            return (containerModel.topMarginPadding ?? 0) + (containerModel.bottomMarginPadding ?? 0)
        }
        return moleculeHeight + (containerModel.topMarginPadding ?? 0) + (containerModel.bottomMarginPadding ?? 0)
    }
    
    public override class func requiredModules(_ molecule: MoleculeProtocol?, delegateObject: MVMCoreUIDelegateObject?, error: AutoreleasingUnsafeMutablePointer<MVMCoreErrorObject?>?) -> [String]? {
        guard let containerModel = molecule as? MoleculeContainerModel,
            let moleculeClass = MVMCoreUIMoleculeMappingObject.shared()?.getMoleculeClass(containerModel.molecule) as? ModelMoleculeViewProtocol.Type else { return nil }
        return moleculeClass.requiredModules(containerModel.molecule, delegateObject: delegateObject, error: error)
    }
}