Initial widget work

• Latest data is saved out to JSON at various points.
• Technote on widget usage.
• Widget target added.

Multiplatform/Shared/MainApp.swift

@@ -16,6 +16,7 @@ struct MainApp: App {
 	#endif
 	#if os(iOS)
 	@UIApplicationDelegateAdaptor(AppDelegate.self) private var delegate
+	@Environment(\.scenePhase) private var scenePhase
 	#endif
 	
 	@StateObject private var defaults = AppDefaults.shared
@@ -86,6 +87,11 @@ struct MainApp: App {
 			SceneNavigationView()
 				.environmentObject(defaults)
 				.modifier(PreferredColorSchemeModifier(preferredColorScheme: defaults.userInterfaceColorPalette))
+				.onReceive(NotificationCenter.default.publisher(for: UIApplication.didEnterBackgroundNotification)) { _ in
+					print("didEnterBackgroundNotification")
+					appDelegate.refreshWidgetData()
+				}
+				
 		}
 		.commands {
 			CommandGroup(after: .newItem, addition: {
@@ -131,6 +137,18 @@ struct MainApp: App {
 					.keyboardShortcut(.rightArrow, modifiers: [.command])
 			})
 		}
+		.onChange(of: scenePhase, perform: { newPhase in
+			switch newPhase {
+			case .active:
+				print("active")
+			case .inactive:
+				print("inactive")
+			case .background:
+				print("background")
+			@unknown default:
+				print("unknown")
+			}
+		})
 		#endif
 	}
 }

Multiplatform/Shared/Widget Data/WidgetData.swift

@@ -0,0 +1,28 @@
+//
+//  WidgetData.swift
+//  NetNewsWire
+//
+//  Created by Stuart Breckenridge on 10/7/20.
+//  Copyright © 2020 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+
+struct WidgetData: Codable {
+
+	let currentUnreadCount: Int
+	let currentTodayCount: Int
+	let latestArticles: [LatestArticle]
+	let lastUpdateTime: Date
+
+}
+
+struct LatestArticle: Codable {
+
+	let feedTitle: String
+	let articleTitle: String?
+	let articleSummary: String?
+	let feedIcon: Data? // Base64 encoded image data
+	let pubDate: String
+
+}

Multiplatform/iOS/AppDelegate.swift

@@ -12,6 +12,7 @@ import RSWeb
 import Account
 import BackgroundTasks
 import os.log
+import WidgetKit
 
 var appDelegate: AppDelegate!
 
@@ -115,6 +116,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
 		syncTimer!.update()
 		#endif
 		
+		
 		return true
 		
 	}
@@ -133,11 +135,51 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
 		shuttingDown = true
 	}
 	
+	func refreshWidgetData() {
+		
+		do {
+			let articles = try SmartFeedsController.shared.unreadFeed.fetchArticles().sorted(by: { $0.datePublished! > $1.datePublished!  })
+			var latest = [LatestArticle]()
+			for article in articles {
+				let latestArticle = LatestArticle(feedTitle: article.sortableWebFeedID,
+												  articleTitle: article.title,
+												  articleSummary: article.summary,
+												  feedIcon: article.iconImage()?.image.dataRepresentation(),
+												  pubDate: article.datePublished!.description)
+				latest.append(latestArticle)
+				if latest.count == 5 { break }
+			}
+			
+			print(latest.map({ $0.pubDate }))
+			
+			let latestData = WidgetData(currentUnreadCount: SmartFeedsController.shared.unreadFeed.unreadCount,
+										currentTodayCount: SmartFeedsController.shared.todayFeed.unreadCount,
+										latestArticles: latest,
+										lastUpdateTime: Date())
+			
+			print(latestData)
+			
+			let encodedData = try JSONEncoder().encode(latestData)
+			let appGroup = Bundle.main.object(forInfoDictionaryKey: "AppGroup") as! String
+			let containerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroup)
+			let dataURL = containerURL?.appendingPathComponent("widget-data.json")
+			if FileManager.default.fileExists(atPath: dataURL!.path) {
+				try FileManager.default.removeItem(at: dataURL!)
+			}
+			try encodedData.write(to: dataURL!)
+			print(dataURL!.path)
+			WidgetCenter.shared.reloadAllTimelines()
+		} catch {
+			os_log(.error, log: self.log, "%@", error.localizedDescription)
+		}
+	}
+	
 	// MARK: Notifications
 	
 	@objc func unreadCountDidChange(_ note: Notification) {
 		if note.object is AccountManager {
 			unreadCount = AccountManager.shared.unreadCount
+			refreshWidgetData()
 		}
 	}
 	
@@ -373,6 +415,7 @@ private extension AppDelegate {
 			}
 			AccountManager.shared.refreshAll(errorHandler: ErrorHandler.log) { [unowned self] in
 				if !AccountManager.shared.isSuspended {
+					self.refreshWidgetData()
 					self.suspendApplication()
 					os_log("Account refresh operation completed.", log: self.log, type: .info)
 					task.setTaskCompleted(success: true)

Multiplatform/iOS/Widget/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Multiplatform/iOS/Widget/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Multiplatform/iOS/Widget/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Multiplatform/iOS/Widget/Assets.xcassets/WidgetBackground.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Multiplatform/iOS/Widget/Info.plist

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Widget</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.widgetkit-extension</string>
+	</dict>
+</dict>
+</plist>

Multiplatform/iOS/Widget/LatestWidget.swift

@@ -0,0 +1,76 @@
+//
+//  LatestWidget.swift
+//  Widget
+//
+//  Created by Stuart Breckenridge on 10/7/20.
+//  Copyright © 2020 Ranchero Software. All rights reserved.
+//
+
+import WidgetKit
+import SwiftUI
+
+struct Provider: TimelineProvider {
+    public typealias Entry = SimpleEntry
+
+    public func snapshot(with context: Context, completion: @escaping (SimpleEntry) -> ()) {
+        let entry = SimpleEntry(date: Date())
+        completion(entry)
+    }
+
+    public func timeline(with context: Context, completion: @escaping (Timeline<Entry>) -> ()) {
+        var entries: [SimpleEntry] = []
+
+        // Generate a timeline consisting of five entries an hour apart, starting from the current date.
+        let currentDate = Date()
+        for hourOffset in 0 ..< 5 {
+            let entryDate = Calendar.current.date(byAdding: .hour, value: hourOffset, to: currentDate)!
+            let entry = SimpleEntry(date: entryDate)
+            entries.append(entry)
+        }
+
+        let timeline = Timeline(entries: entries, policy: .atEnd)
+        completion(timeline)
+    }
+}
+
+struct SimpleEntry: TimelineEntry {
+    public let date: Date
+}
+
+struct PlaceholderView : View {
+    var body: some View {
+        Text("Placeholder View")
+    }
+}
+
+struct WidgetEntryView : View {
+    var entry: Provider.Entry
+
+    var body: some View {
+        Text(entry.date, style: .time)
+    }
+}
+
+@main
+struct LatestWidget: Widget {
+    private let kind: String = "Widget"
+
+    public var body: some WidgetConfiguration {
+        StaticConfiguration(kind: kind,
+							provider: Provider(),
+							placeholder: PlaceholderView()) { entry in
+            WidgetEntryView(entry: entry)
+        }
+        .configurationDisplayName("NetNewsWire Now")
+        .description("This is NetNewsWire.")
+		.supportedFamilies([.systemSmall, .systemMedium])
+		
+    }
+}
+
+struct Widget_Previews: PreviewProvider {
+    static var previews: some View {
+        WidgetEntryView(entry: SimpleEntry(date: Date()))
+            .previewContext(WidgetPreviewContext(family: .systemSmall))
+    }
+}