iOS-EasyFPU/Ingredient+CoreDataClass.swift at master · avouspierre/iOS-EasyFPU · GitHub

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//
//  Ingredient+CoreDataClass.swift
//  EasyFPU
//
//  Created by Ulrich Rüth on 05.11.20.
//  Copyright © 2020 Ulrich Rüth. All rights reserved.
//
//

import Foundation
import CoreData


public class Ingredient: NSManagedObject {
    public override var description: String {
        name ?? NSLocalizedString("- Unnamed -", comment: "")
    }

    static func fetchAll(viewContext: NSManagedObjectContext = AppDelegate.viewContext) -> [Ingredient] {
        let request: NSFetchRequest<Ingredient> = Ingredient.fetchRequest()
        request.sortDescriptors = [NSSortDescriptor(key: "name", ascending: true)]

        guard let ingredients = try? AppDelegate.viewContext.fetch(request) else {
            return []
        }
        return ingredients
    }

    static func deleteAll(viewContext: NSManagedObjectContext = AppDelegate.viewContext) {
        Ingredient.fetchAll(viewContext: viewContext).forEach({
            viewContext.delete($0)
        })

        try? viewContext.save()
    }

    static func create(from foodItemVM: FoodItemViewModel) -> Ingredient {
        let moc = AppDelegate.viewContext

        // Create Ingredient
        let cdIngredient = Ingredient(context: moc)

        // Fill data
        cdIngredient.amount = Int64(foodItemVM.amount)
        cdIngredient.caloriesPer100g = foodItemVM.caloriesPer100g
        cdIngredient.carbsPer100g = foodItemVM.carbsPer100g
        cdIngredient.category = foodItemVM.category.rawValue
        cdIngredient.favorite = foodItemVM.favorite
        cdIngredient.id = foodItemVM.id
        cdIngredient.name = foodItemVM.name
        cdIngredient.sugarsPer100g = foodItemVM.sugarsPer100g
        cdIngredient.foodItem = foodItemVM.cdFoodItem


        // Save new Ingredient
        try? moc.save()

        return cdIngredient
    }

    static func create(from existingIngredient: Ingredient) -> Ingredient {
        let moc = AppDelegate.viewContext

        // Create Ingredient
        let cdIngredient = Ingredient(context: moc)
        cdIngredient.id = UUID()

        // Fill data
        cdIngredient.amount = existingIngredient.amount
        cdIngredient.caloriesPer100g = existingIngredient.caloriesPer100g
        cdIngredient.carbsPer100g = existingIngredient.carbsPer100g
        cdIngredient.category = existingIngredient.category
        cdIngredient.favorite = existingIngredient.favorite
        cdIngredient.name = existingIngredient.name
        cdIngredient.sugarsPer100g = existingIngredient.sugarsPer100g
        cdIngredient.foodItem = existingIngredient.foodItem

        // Save new Ingredient
        try? moc.save()

        return cdIngredient
    }
}