Refactored refresh progress so that it doesn't crash on the mac anymore

Multiplatform/Shared/MainApp.swift

@@ -26,8 +26,9 @@ struct MainApp: App {
 		WindowGroup {
 			SceneNavigationView()
 				.frame(minWidth: 600, idealWidth: 1000, maxWidth: .infinity, minHeight: 600, idealHeight: 700, maxHeight: .infinity)
-				.environmentObject(defaults)
+				.onAppear { refreshProgress.startup() }
 				.environmentObject(refreshProgress)
+				.environmentObject(defaults)
 		}
 		.windowToolbarStyle(UnifiedWindowToolbarStyle())
 		.commands {
@@ -86,8 +87,9 @@ struct MainApp: App {
 		#if os(iOS)
 		WindowGroup {
 			SceneNavigationView()
-				.environmentObject(defaults)
+				.onAppear { refreshProgress.startup() }
 				.environmentObject(refreshProgress)
+				.environmentObject(defaults)
 				.modifier(PreferredColorSchemeModifier(preferredColorScheme: defaults.userInterfaceColorPalette))
 		}
 		.commands {

Multiplatform/Shared/Previews/PreviewProvider+RefreshProgressModel.swift

@@ -1,29 +0,0 @@
-//
-//  PreviewProvider+RefreshProgressModel.swift
-//  NetNewsWire
-//
-//  Created by Phil Viso on 7/3/20.
-//  Copyright © 2020 Ranchero Software. All rights reserved.
-//
-
-import Account
-import Foundation
-import RSWeb
-import SwiftUI
-
-extension PreviewProvider {
-	
-	static func refreshProgressModel(lastRefreshDate: Date?,
-									 tasksCompleted: Int,
-									 totalTasks: Int) -> RefreshProgressModel {
-		return RefreshProgressModel { () -> Date? in
-			return lastRefreshDate
-		} combinedRefreshProgressProvider: { () -> CombinedRefreshProgress in
-			let progress = DownloadProgress(numberOfTasks: totalTasks)
-			progress.numberRemaining = totalTasks - tasksCompleted
-			
-			return CombinedRefreshProgress(downloadProgressArray: [progress])
-		}
-	}
-	
-}

Multiplatform/Shared/RefreshProgressModel.swift

@@ -28,19 +28,11 @@ class RefreshProgressModel: ObservableObject {
 		return formatter
 	}()
 		
-	private let lastRefreshDate: () -> Date?
-	private let combinedRefreshProgress: () -> CombinedRefreshProgress
-	
 	private static let lastRefreshDateTextUpdateInterval = 60
 	private static let lastRefreshDateTextRelativeDateFormattingThreshold = 60.0
 	
-	init(lastRefreshDateProvider: @escaping () -> Date?,
-		 combinedRefreshProgressProvider: @escaping () -> CombinedRefreshProgress) {
-		self.lastRefreshDate = lastRefreshDateProvider
-		self.combinedRefreshProgress = combinedRefreshProgressProvider
-		
+	func startup() {
 		updateState()
-		
 		observeRefreshProgress()
 		scheduleLastRefreshDateTextUpdate()
 	}
@@ -54,12 +46,12 @@ class RefreshProgressModel: ObservableObject {
 	// MARK: Refreshing state
 	
 	@objc private func updateState() {
-		let progress = combinedRefreshProgress()
+		let progress = AccountManager.shared.combinedRefreshProgress
 		
 		if !progress.isComplete {
 			let fractionCompleted = Float(progress.numberCompleted) / Float(progress.numberOfTasks)
 			self.state = .refreshProgress(fractionCompleted)
-		} else if let lastRefreshDate = self.lastRefreshDate() {
+		} else if let lastRefreshDate = AccountManager.shared.lastArticleFetchEndTime {
 			let text = localizedLastRefreshText(lastRefreshDate: lastRefreshDate)
 			self.state = .lastRefreshDateText(text)
 		} else {
@@ -88,14 +80,3 @@ class RefreshProgressModel: ObservableObject {
 	}
 		
 }
-
-extension RefreshProgressModel {
-	
-	convenience init() {
-		self.init(
-			lastRefreshDateProvider: { AccountManager.shared.lastArticleFetchEndTime },
-			combinedRefreshProgressProvider: { AccountManager.shared.combinedRefreshProgress }
-		)
-	}
-		
-}

Multiplatform/Shared/Sidebar/RefreshProgressView.swift

@@ -38,18 +38,3 @@ struct RefreshProgressView: View {
 	}
 	
 }
-
-struct RefreshProgressView_Previews: PreviewProvider {
-	static var previews: some View {
-		Group {
-			RefreshProgressView()
-				.environmentObject(refreshProgressModel(lastRefreshDate: nil, tasksCompleted: 1, totalTasks: 2))
-				.previewDisplayName("Refresh in progress")
-						
-			RefreshProgressView()
-				.environmentObject(refreshProgressModel(lastRefreshDate: Date(timeIntervalSinceNow: -120.0), tasksCompleted: 0, totalTasks: 0))
-				.previewDisplayName("Last refreshed with date")
-		}
-		.previewLayout(.sizeThatFits)
-    }
-}