DataController.swift

//
//  DataController.swift
//  Harvey
//
//  Created by Sean Hart on 9/2/17.
//  Copyright © 2017 TangoJ Labs, LLC. All rights reserved.
//

import UIKit
import CoreData


class DataController: NSObject
{
    var managedObjectContext: NSManagedObjectContext
    var psc: NSPersistentStoreCoordinator
    
    override  init()
    {
        // This resource is the same name as your xcdatamodeld contained in your project.
        guard let modelURL = Bundle.main.url(forResource: "Harvey", withExtension:"momd") else
        {
            fatalError("Error loading model from bundle")
        }
        
        // The managed object model for the application. It is a fatal error for the application not to be able to find and load its model.
        guard let mom = NSManagedObjectModel(contentsOf: modelURL) else
        {
            fatalError("Error initializing mom from: \(modelURL)")
        }
        
        psc = NSPersistentStoreCoordinator(managedObjectModel: mom)
        
        self.managedObjectContext = NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
        self.managedObjectContext.persistentStoreCoordinator = psc
        
        let urls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
        let docURL = urls[urls.endIndex-1]
        
        /* The directory the application uses to store the Core Data store file.
         This code uses a file named "DataModel.sqlite" in the application's documents directory.
         */
        
        let storeURL = docURL.appendingPathComponent("DataModel.sqlite")
        
        // Try to migrate the data store, if it fails (the store model changed, reset the store)
        do
        {
            try psc.addPersistentStore(ofType: NSSQLiteStoreType, configurationName: nil, at: storeURL, options: [NSMigratePersistentStoresAutomaticallyOption: true, NSInferMappingModelAutomaticallyOption: true])
        }
        catch
        {
            fatalError("Error migrating store: \(error)")
        }
        
    }
}