106 lines
2.3 KiB
Swift
106 lines
2.3 KiB
Swift
//
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// ArticleStatus.swift
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// NetNewsWire
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//
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// Created by Brent Simmons on 7/1/17.
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// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import os
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/// Read and starred status for an Article.
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///
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/// These are uniqued — there is never more than one instance per articleID per account.
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///
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/// Its two mutable Bool properties, `read` and `starred`, are each protected
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/// by an OSAllocatedUnfairLock, which makes `ArticleStatus` Sendable.
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public final class ArticleStatus: Hashable, Sendable {
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public enum Key: String, Sendable {
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case read = "read"
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case starred = "starred"
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}
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public let articleID: String
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public let dateArrived: Date
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private let _read: OSAllocatedUnfairLock<Bool>
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private let _starred: OSAllocatedUnfairLock<Bool>
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public var read: Bool {
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get {
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_read.withLock { $0 }
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}
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set {
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_read.withLock { $0 = newValue }
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}
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}
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public var starred: Bool {
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get {
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_starred.withLock { $0 }
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}
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set {
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_starred.withLock { $0 = newValue }
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}
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}
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public init(articleID: String, read: Bool, starred: Bool, dateArrived: Date) {
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self.articleID = articleID
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self.dateArrived = dateArrived
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self._read = OSAllocatedUnfairLock(initialState: read)
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self._starred = OSAllocatedUnfairLock(initialState: starred)
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}
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public convenience init(articleID: String, read: Bool, dateArrived: Date) {
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self.init(articleID: articleID, read: read, starred: false, dateArrived: dateArrived)
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}
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public func boolStatus(forKey key: ArticleStatus.Key) -> Bool {
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switch key {
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case .read:
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return read
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case .starred:
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return starred
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}
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}
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public func setBoolStatus(_ status: Bool, forKey key: ArticleStatus.Key) {
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switch key {
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case .read:
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read = status
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case .starred:
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starred = status
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}
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}
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// MARK: - Hashable
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public func hash(into hasher: inout Hasher) {
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hasher.combine(articleID)
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}
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// MARK: - Equatable
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public static func ==(lhs: ArticleStatus, rhs: ArticleStatus) -> Bool {
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return lhs.articleID == rhs.articleID && lhs.dateArrived == rhs.dateArrived && lhs.read == rhs.read && lhs.starred == rhs.starred
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}
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}
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public extension Set where Element == ArticleStatus {
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func articleIDs() -> Set<String> {
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return Set<String>(map { $0.articleID })
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}
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}
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public extension Array where Element == ArticleStatus {
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func articleIDs() -> [String] {
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return map { $0.articleID }
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}
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}
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