ModelController.swift

import CoreData

public class ModelController {
	
	typealias VoidCompletion = () -> ()
	
	// MARK: - Properties
	
	private var modelName: String = Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String ?? ""
	
	lazy var persistentContainer: NSPersistentContainer = {
		
		let container = NSPersistentContainer(name: modelName)
		container.loadPersistentStores(completionHandler: { (storeDescription, error) in
			
			if let error = error as NSError? {
				fatalError("Unresolved error \(error), \(error.userInfo)")
			}
		})
		return container
	}()
	
	lazy var context: NSManagedObjectContext = {
		return persistentContainer.viewContext
	}()
	
	lazy var backgroundMOC: NSManagedObjectContext = {
		return persistentContainer.newBackgroundContext()
	}()
	
	// MARK: - Convenience Init
	
	convenience init(modelName model: String) {
		self.init()
		modelName = model
	}
}