From b220948e2b14bbb6ecf5122c6fa200a899311572 Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Sun, 10 May 2020 14:54:43 -0400
Subject: [PATCH] Only initialize NSManagedObjectModel once

Prevents CoreData warnings when switching accounts and constructing a
second MastodonCachePersistentStore
---
 Tusker/CoreData/MastodonCachePersistentStore.swift | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Tusker/CoreData/MastodonCachePersistentStore.swift b/Tusker/CoreData/MastodonCachePersistentStore.swift
index 4807201d..b437deda 100644
--- a/Tusker/CoreData/MastodonCachePersistentStore.swift
+++ b/Tusker/CoreData/MastodonCachePersistentStore.swift
@@ -13,15 +13,18 @@ import Combine
 
 class MastodonCachePersistentStore: NSPersistentContainer {
     
+    private static let managedObjectModel: NSManagedObjectModel = {
+        let url = Bundle.main.url(forResource: "Tusker", withExtension: "momd")!
+        return NSManagedObjectModel(contentsOf: url)!
+    }()
+    
     private(set) lazy var backgroundContext = newBackgroundContext()
     
     let statusSubject = PassthroughSubject<String, Never>()
     let accountSubject = PassthroughSubject<String, Never>()
     
     init(for controller: MastodonController) {
-        let url = Bundle.main.url(forResource: "Tusker", withExtension: "momd")!
-        let model = NSManagedObjectModel(contentsOf: url)!
-        super.init(name: "\(controller.accountInfo!.id)_cache", managedObjectModel: model)
+        super.init(name: "\(controller.accountInfo!.id)_cache", managedObjectModel: MastodonCachePersistentStore.managedObjectModel)
         loadPersistentStores { (description, error) in
             if let error = error {
                 fatalError("Unable to load persistent store: \(error)")