SideStore/Sources/SideStoreCore/Model/NewsItem.swift

//
//  NewsItem.swift
//  AltStore
//
//  Created by Riley Testut on 8/29/19.
//  Copyright © 2019 Riley Testut. All rights reserved.
//

import CoreData
import UIKit

@objc(NewsItem)
public class NewsItem: NSManagedObject, Decodable, Fetchable {
    /* Properties */
    @NSManaged public var identifier: String
    @NSManaged public var date: Date

    @NSManaged public var title: String
    @NSManaged public var caption: String
    @NSManaged public var tintColor: UIColor
    @NSManaged public var sortIndex: Int32
    @NSManaged public var isSilent: Bool

    @NSManaged public var imageURL: URL?
    @NSManaged public var externalURL: URL?

    @NSManaged public var appID: String?
    @NSManaged public var sourceIdentifier: String?

    /* Relationships */
    @NSManaged public var storeApp: StoreApp?
    @NSManaged public var source: Source?

    private enum CodingKeys: String, CodingKey {
        case identifier
        case date
        case title
        case caption
        case tintColor
        case imageURL
        case externalURL = "url"
        case appID
        case notify
    }

    override private init(entity: NSEntityDescription, insertInto context: NSManagedObjectContext?) {
        super.init(entity: entity, insertInto: context)
    }

    public required init(from decoder: Decoder) throws {
        guard let context = decoder.managedObjectContext else { preconditionFailure("Decoder must have non-nil NSManagedObjectContext.") }

        super.init(entity: NewsItem.entity(), insertInto: context)

        let container = try decoder.container(keyedBy: CodingKeys.self)
        identifier = try container.decode(String.self, forKey: .identifier)
        date = try container.decode(Date.self, forKey: .date)

        title = try container.decode(String.self, forKey: .title)
        caption = try container.decode(String.self, forKey: .caption)

        if let tintColorHex = try container.decodeIfPresent(String.self, forKey: .tintColor) {
            guard let tintColor = UIColor(hexString: tintColorHex) else {
                throw DecodingError.dataCorruptedError(forKey: .tintColor, in: container, debugDescription: "Hex code is invalid.")
            }

            self.tintColor = tintColor
        }

        imageURL = try container.decodeIfPresent(URL.self, forKey: .imageURL)
        externalURL = try container.decodeIfPresent(URL.self, forKey: .externalURL)

        appID = try container.decodeIfPresent(String.self, forKey: .appID)

        let notify = try container.decodeIfPresent(Bool.self, forKey: .notify) ?? false
        isSilent = !notify
    }
}

public extension NewsItem {
    @nonobjc class func fetchRequest() -> NSFetchRequest<NewsItem> {
        NSFetchRequest<NewsItem>(entityName: "NewsItem")
    }
}