Impressia/Vernissage/CoreData/CoreDataHandler.swift

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//
// https://mczachurski.dev
// Copyright © 2022 Marcin Czachurski and the repository contributors.
// Licensed under the MIT License.
//
import CoreData
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public class CoreDataHandler {
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public static let shared = CoreDataHandler()
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public let container: NSPersistentContainer
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private init(inMemory: Bool = false) {
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container = NSPersistentContainer(name: "Vernissage")
if inMemory {
container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
}
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
container.viewContext.automaticallyMergesChangesFromParent = true
}
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public func newBackgroundContext() -> NSManagedObjectContext {
self.container.newBackgroundContext()
}
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public func save() {
let context = self.container.viewContext
if context.hasChanges {
do {
try context.save()
} catch {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate.
// You should not use this function in a shipping application, although it may be useful during development.
let nserror = error as NSError
fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
}
}
}
}
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extension CoreDataHandler {
public static var memory: CoreDataHandler = {
CoreDataHandler(inMemory: true)
}()
}
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extension CoreDataHandler {
public static var preview: CoreDataHandler = {
let result = CoreDataHandler(inMemory: true)
let viewContext = result.container.viewContext
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let statusData = StatusData(context: viewContext)
statusData.id = "516272295308651148"
statusData.uri = "https://pixelfed.social/p/z428/516272295308651148"
statusData.url = URL(string: "https://pixelfed.social/p/z428/516272295308651148")
statusData.content = "4: Along the way.<br />\n<a href=\"https://pixelfed.social/discover/tags/outerworld?src=hash\" title=\"#outerworld\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#outerworld</a> <a href=\"https://pixelfed.social/discover/tags/pixelfed365?src=hash\" title=\"#pixelfed365\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#pixelfed365</a> <a href=\"https://pixelfed.social/discover/tags/dresden?src=hash\" title=\"#dresden\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#dresden</a> <a href=\"https://pixelfed.social/discover/tags/photography?src=hash\" title=\"#photography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#photography</a> <a href=\"https://pixelfed.social/discover/tags/smartphonephotography?src=hash\" title=\"#smartphonephotography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#smartphonephotography</a> <a href=\"https://pixelfed.social/discover/tags/afternoons?src=hash\" title=\"#afternoons\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#afternoons</a> <a href=\"https://pixelfed.social/discover/tags/grey?src=hash\" title=\"#grey\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#grey</a>"
statusData.reblogsCount = 12
statusData.createdAt = "2023-01-04T15:21:47.000Z"
statusData.visibility = "public"
statusData.applicationName = "web"
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do {
try viewContext.save()
} catch {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
let nsError = error as NSError
fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
}
return result
}()
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}
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public struct PreviewData {
static func getStatus() -> StatusData {
let statusData = StatusData()
statusData.id = "516272295308651148"
statusData.uri = "https://pixelfed.social/p/z428/516272295308651148"
statusData.url = URL(string: "https://pixelfed.social/p/z428/516272295308651148")
statusData.content = "4: Along the way.<br />\n<a href=\"https://pixelfed.social/discover/tags/outerworld?src=hash\" title=\"#outerworld\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#outerworld</a> <a href=\"https://pixelfed.social/discover/tags/pixelfed365?src=hash\" title=\"#pixelfed365\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#pixelfed365</a> <a href=\"https://pixelfed.social/discover/tags/dresden?src=hash\" title=\"#dresden\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#dresden</a> <a href=\"https://pixelfed.social/discover/tags/photography?src=hash\" title=\"#photography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#photography</a> <a href=\"https://pixelfed.social/discover/tags/smartphonephotography?src=hash\" title=\"#smartphonephotography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#smartphonephotography</a> <a href=\"https://pixelfed.social/discover/tags/afternoons?src=hash\" title=\"#afternoons\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#afternoons</a> <a href=\"https://pixelfed.social/discover/tags/grey?src=hash\" title=\"#grey\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#grey</a>"
statusData.reblogsCount = 12
statusData.createdAt = "2023-01-04T15:21:47.000Z"
statusData.visibility = "public"
statusData.applicationName = "web"
return statusData
}
}