Add NSUserActivity's for timelines

Pachyderm/Model/Timeline.swift

@@ -41,3 +41,50 @@ extension Timeline {
         return request
     }
 }
+
+extension Timeline: Codable {
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        let type = try container.decode(String.self, forKey: .type)
+        switch type {
+        case "home":
+            self = .home
+        case "public":
+            self = .public(local: try container.decode(Bool.self, forKey: .local))
+        case "tag":
+            self = .tag(hashtag: try container.decode(String.self, forKey: .hashtag))
+        case "list":
+            self = .list(id: try container.decode(String.self, forKey: .listID))
+        case "direct":
+            self = .direct
+        default:
+            throw DecodingError.dataCorruptedError(forKey: CodingKeys.type, in: container, debugDescription: "Timeline type must be one of 'home', 'local', 'tag', 'list', or 'direct'")
+        }
+    }
+    
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        switch self {
+        case .home:
+            try container.encode("home", forKey: .type)
+        case let .public(local):
+            try container.encode("public", forKey: .type)
+            try container.encode(local, forKey: .local)
+        case let .tag(hashtag):
+            try container.encode("tag", forKey: .type)
+            try container.encode(hashtag, forKey: .hashtag)
+        case let .list(id):
+            try container.encode("list", forKey: .type)
+            try container.encode(id, forKey: .listID)
+        case .direct:
+            try container.encode("direct", forKey: .type)
+        }
+    }
+    
+    enum CodingKeys: String, CodingKey {
+        case type
+        case local
+        case hashtag
+        case listID
+    }
+}

Tusker/Info.plist

@@ -4,6 +4,7 @@
 <dict>
 	<key>NSUserActivityTypes</key>
 	<array>
+		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.show-timeline</string>
 		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.check-notifications</string>
 		<string>$(PRODUCT_BUNDLE_IDENTIFIER).activity.new-post</string>
 	</array>

Tusker/Screens/Timeline/TimelineTableViewController.swift

@@ -47,6 +47,8 @@ class TimelineTableViewController: EnhancedTableViewController {
 
         self.refreshControl = UIRefreshControl()
         refreshControl!.addTarget(self, action: #selector(refreshStatuses(_:)), for: .valueChanged)
+        
+        userActivity = UserActivityManager.showTimelineActivity(timeline: timeline)
     }
     
     required init?(coder aDecoder: NSCoder) {

Tusker/Shortcuts/UserActivityManager.swift

@@ -12,6 +12,9 @@ import Pachyderm
 class UserActivityManager {
     
     // MARK: - Utils
+    private static let encoder = PropertyListEncoder()
+    private static let decoder = PropertyListDecoder()
+    
     private static func present(_ vc: UIViewController, animated: Bool = true) {
         UIApplication.shared.delegate?.window??.rootViewController?.present(vc, animated: animated)
     }
@@ -52,4 +55,66 @@ class UserActivityManager {
         tabBarController.selectedIndex = 1
     }
     
+    // MARK: - Show Timeline
+    static func showTimelineActivity(timeline: Timeline) -> NSUserActivity? {
+        guard let timelineData = try? encoder.encode(timeline) else { return nil }
+        
+        let activity = NSUserActivity(type: .showTimeline)
+        activity.isEligibleForPrediction = true
+        activity.userInfo = ["timelineData": timelineData]
+        switch timeline {
+        case .home:
+            activity.title = NSLocalizedString("Show Home Timeline", comment: "home timeline shortcut title")
+            activity.suggestedInvocationPhrase = NSLocalizedString("Show my home timeline", comment: "home timeline shortcut invocation phrase")
+        case  .public(local: true):
+            activity.title = NSLocalizedString("Show Local Timeline", comment: "local timeline shortcut title")
+            activity.suggestedInvocationPhrase = NSLocalizedString("Show my local timeline", comment: "local timeline shortcut invocation phrase")
+        case .public(local: false):
+            activity.title = NSLocalizedString("Show Federated Timeline", comment: "federated timeline shortcut title")
+            activity.suggestedInvocationPhrase = NSLocalizedString("Show my federated timeline", comment: "federated timeline invocation phrase")
+        case let .tag(hashtag):
+            activity.title = String(format: NSLocalizedString("Show #%@", comment: "show hashtag shortcut title"), hashtag)
+            activity.suggestedInvocationPhrase = String(format: NSLocalizedString("Show the %@ hashtag", comment: "hashtag shortcut invocation phrase"), hashtag)
+        case .list:
+            // todo: add title to list
+            activity.title = NSLocalizedString("Show List", comment: "list timeline shortcut title")
+            activity.suggestedInvocationPhrase = NSLocalizedString("Show my list", comment: "list timeline invocation phrase")
+        case .direct:
+            activity.title = NSLocalizedString("Show Direct Messages", comment: "direct message timeline shortcut title")
+            activity.suggestedInvocationPhrase = NSLocalizedString("Show my direct messages", comment: "direct message timeline invocation phrase")
+        }
+        return activity
+    }
+    
+    static func handleShowTimeline(activity: NSUserActivity) {
+        guard let timelineData = activity.userInfo?["timelineData"] as? Data,
+            let timeline = try? decoder.decode(Timeline.self, from: timelineData) else {
+                return
+        }
+        
+        let tabBarController = UIApplication.shared.keyWindow!.rootViewController! as! UITabBarController
+        tabBarController.selectedIndex = 0
+        let navigationController = tabBarController.viewControllers![0] as! UINavigationController
+        switch timeline {
+        case .home, .public(true), .public(false):
+            navigationController.popToRootViewController(animated: false)
+            let rootController = navigationController.viewControllers.first! as! SegmentedPageViewController
+            let index: Int
+            switch timeline {
+            case .home:
+                index = 0
+            case .public(false):
+                index = 1
+            case .public(true):
+                index = 2
+            default:
+                fatalError()
+            }
+            rootController.segmentedControl.selectedSegmentIndex = index
+            rootController.selectPage(at: index, animated: false)
+        default:
+            navigationController.pushViewController(TimelineTableViewController(for: timeline), animated: false)
+        }
+    }
+    
 }

Tusker/Shortcuts/UserActivityType.swift

@@ -9,8 +9,9 @@
 import Foundation
 
 enum UserActivityType: String {
-    case newPost = "net.shadowfacts.tusker.activity.new-post"
+    case newPost = "net.shadowfacts.Tusker.activity.new-post"
-    case checkNotifications = "net.shadowfacts.tusker.activity.check-notifications"
+    case checkNotifications = "net.shadowfacts.Tusker.activity.check-notifications"
+    case showTimeline = "net.shadowfacts.Tusker.activity.show-timeline"
 }
 
 extension UserActivityType {
@@ -20,6 +21,8 @@ extension UserActivityType {
             return UserActivityManager.handleNewPost
         case .checkNotifications:
             return UserActivityManager.handleCheckNotifications
+        case .showTimeline:
+            return UserActivityManager.handleShowTimeline
         }
     }
 }