Create shared AppDefaults and delete platform-specific AppDefaults.

Shared/Defaults/RefreshInterval.swift

@@ -0,0 +1,59 @@
+//
+//  RefreshInterval.swift
+//  NetNewsWire-iOS
+//
+//  Created by Maurice Parker on 4/23/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+
+enum RefreshInterval: Int, CaseIterable, Identifiable {
+	case manually = 1
+	case every10Minutes = 2
+	case every30Minutes = 3
+	case everyHour = 4
+	case every2Hours = 5
+	case every4Hours = 6
+	case every8Hours = 7
+
+	func inSeconds() -> TimeInterval {
+		switch self {
+		case .manually:
+			return 0
+		case .every10Minutes:
+			return 10 * 60
+		case .every30Minutes:
+			return 30 * 60
+		case .everyHour:
+			return 60 * 60
+		case .every2Hours:
+			return 2 * 60 * 60
+		case .every4Hours:
+			return 4 * 60 * 60
+		case .every8Hours:
+			return 8 * 60 * 60
+		}
+	}
+
+	var id: String { description() }
+
+	func description() -> String {
+		switch self {
+		case .manually:
+			return NSLocalizedString("Manually", comment: "Manually")
+		case .every10Minutes:
+			return NSLocalizedString("Every 10 Minutes", comment: "Every 10 Minutes")
+		case .every30Minutes:
+			return NSLocalizedString("Every 30 Minutes", comment: "Every 30 Minutes")
+		case .everyHour:
+			return NSLocalizedString("Every Hour", comment: "Every Hour")
+		case .every2Hours:
+			return NSLocalizedString("Every 2 Hours", comment: "Every 2 Hours")
+		case .every4Hours:
+			return NSLocalizedString("Every 4 Hours", comment: "Every 4 Hours")
+		case .every8Hours:
+			return NSLocalizedString("Every 8 Hours", comment: "Every 8 Hours")
+		}
+	}
+}