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path: root/Captura/Data/Persistence.swift
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/*
 Copyright (C) 2024 Rubén Beltrán del Río

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see https://captura.tranquil.systems.
 */
import CoreData

struct PersistenceController {
  static let shared = PersistenceController()

  static var preview: PersistenceController = {
    let result = PersistenceController(inMemory: true)
    return result
  }()

  let container: NSPersistentCloudKitContainer

  init(inMemory: Bool = false) {
    container = NSPersistentCloudKitContainer(name: "Captura")

    #if DEBUG
      do {
        // Use the container to initialize the development schema.
        try container.initializeCloudKitSchema(options: [])
      } catch {
        // Handle any errors.
      }
    #endif

    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
  }
}