WIP: Big ReSwift refactor

Cartfile

@@ -2,3 +2,4 @@ github "SwiftyJSON/SwiftyJSON" ~> 4.0
 github "PromiseKit/Foundation" ~> 3.0
 github "nhurden/MediaKeyTap"
 github "krzyzanowskim/CryptoSwift"
+github "ReSwift/ReSwift" "mjarvis/swift-5.0"

Cartfile.resolved

@@ -1,5 +1,6 @@
 github "PromiseKit/Foundation" "3.3.2"
-github "SwiftyJSON/SwiftyJSON" "4.2.0"
+github "ReSwift/ReSwift" "bc5943ad9493fc7fbad5200f690be538db8e86fb"
+github "SwiftyJSON/SwiftyJSON" "4.3.0"
 github "krzyzanowskim/CryptoSwift" "1.0.0"
 github "mxcl/PromiseKit" "6.8.4"
 github "nhurden/MediaKeyTap" "2.2.1"

Persephone.xcodeproj/project.pbxproj

@@ -20,7 +20,7 @@
 		E40F41F3221EDE27004B6CB8 /* Preferences.swift in Sources */ = {isa = PBXBuildFile; fileRef = E40F41F2221EDE27004B6CB8 /* Preferences.swift */; };
 		E40FE71B221B904300A4223F /* NSEvent.swift in Sources */ = {isa = PBXBuildFile; fileRef = E40FE71A221B904300A4223F /* NSEvent.swift */; };
 		E419E2872249B96600216A8C /* Song.swift in Sources */ = {isa = PBXBuildFile; fileRef = E419E2862249B96600216A8C /* Song.swift */; };
-		E41B22C021FB6BBA00D544F6 /* libmpdclient.2.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = E41B22BF21FB6BBA00D544F6 /* libmpdclient.2.dylib */; settings = {ATTRIBUTES = (Required, ); }; };
+		E41B22C021FB6BBA00D544F6 /* libmpdclient.2.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = E41B22BF21FB6BBA00D544F6 /* libmpdclient.2.dylib */; };
 		E41B22C121FB6C3300D544F6 /* libmpdclient.2.dylib in Embed Libraries */ = {isa = PBXBuildFile; fileRef = E41B22BF21FB6BBA00D544F6 /* libmpdclient.2.dylib */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
 		E41B22C621FB932700D544F6 /* MPDClient.swift in Sources */ = {isa = PBXBuildFile; fileRef = E41B22C521FB932700D544F6 /* MPDClient.swift */; };
 		E41E52FD223BF87300173814 /* MPDClient+Connection.swift in Sources */ = {isa = PBXBuildFile; fileRef = E41E52FC223BF87300173814 /* MPDClient+Connection.swift */; };
@@ -60,7 +60,6 @@
 		E45E4FDB22515D87004B537F /* Brewfile in Resources */ = {isa = PBXBuildFile; fileRef = E45E4FD822515D87004B537F /* Brewfile */; };
 		E45E4FDC22515D87004B537F /* Cartfile in Resources */ = {isa = PBXBuildFile; fileRef = E45E4FD922515D87004B537F /* Cartfile */; };
 		E45E4FDF225168DA004B537F /* CryptoSwift.framework.dSYM in Resources */ = {isa = PBXBuildFile; fileRef = E45E4FDD225168DA004B537F /* CryptoSwift.framework.dSYM */; };
-		E45E4FE0225168DA004B537F /* CryptoSwift.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E45E4FDE225168DA004B537F /* CryptoSwift.framework */; };
 		E45E4FE122516953004B537F /* CryptoSwift.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E45E4FDE225168DA004B537F /* CryptoSwift.framework */; };
 		E45E4FE222516953004B537F /* CryptoSwift.framework in Embed Libraries */ = {isa = PBXBuildFile; fileRef = E45E4FDE225168DA004B537F /* CryptoSwift.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		E465049A21E94DF500A70F4C /* WindowController.swift in Sources */ = {isa = PBXBuildFile; fileRef = E465049921E94DF500A70F4C /* WindowController.swift */; };
@@ -76,6 +75,19 @@
 		E4A83BEF2221F8CF0098FED6 /* AlbumArtPrefsController.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4A83BEE2221F8CF0098FED6 /* AlbumArtPrefsController.swift */; };
 		E4A83BF12221FAA00098FED6 /* PreferencesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4A83BF02221FAA00098FED6 /* PreferencesViewController.swift */; };
 		E4A83BF4222207D50098FED6 /* AlbumArtService.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4A83BF3222207D50098FED6 /* AlbumArtService.swift */; };
+		E4B11B53226928F20075461B /* AppState.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B52226928F20075461B /* AppState.swift */; };
+		E4B11B5A2269296C0075461B /* ReSwift.framework.dSYM in Resources */ = {isa = PBXBuildFile; fileRef = E4B11B582269296C0075461B /* ReSwift.framework.dSYM */; };
+		E4B11B5B226929730075461B /* ReSwift.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = E4B11B572269296C0075461B /* ReSwift.framework */; };
+		E4B11B5C226929730075461B /* ReSwift.framework in Embed Libraries */ = {isa = PBXBuildFile; fileRef = E4B11B572269296C0075461B /* ReSwift.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
+		E4B11B61226A4C000075461B /* PlayerReducer.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B60226A4BFF0075461B /* PlayerReducer.swift */; };
+		E4B11B63226A4C510075461B /* AppReducer.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B62226A4C510075461B /* AppReducer.swift */; };
+		E4B11B66226A4F830075461B /* PlayerState.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B65226A4F830075461B /* PlayerState.swift */; };
+		E4B11B68226A4FA00075461B /* QueueState.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B67226A4FA00075461B /* QueueState.swift */; };
+		E4B11B6A226A4FBC0075461B /* AlbumListState.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B69226A4FBC0075461B /* AlbumListState.swift */; };
+		E4B11B6D226A5B180075461B /* UpdateQueueAction.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B6C226A5B180075461B /* UpdateQueueAction.swift */; };
+		E4B11B6F226A5C7A0075461B /* UpdateStatusAction.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B6E226A5C7A0075461B /* UpdateStatusAction.swift */; };
+		E4B11B71226A64E60075461B /* UpdateElapsedTimeAction.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B70226A64E60075461B /* UpdateElapsedTimeAction.swift */; };
+		E4B11B73226A6C770075461B /* TrackTimer.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4B11B72226A6C770075461B /* TrackTimer.swift */; };
 		E4C8B53C22342005009A20F3 /* PreferencesWindowController.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4C8B53B22342005009A20F3 /* PreferencesWindowController.swift */; };
 		E4C8B53E22349002009A20F3 /* MPDIdle.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4C8B53D22349002009A20F3 /* MPDIdle.swift */; };
 		E4E8CC902204EC7F0024217A /* Delegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = E4E8CC8F2204EC7F0024217A /* Delegate.swift */; };
@@ -113,6 +125,7 @@
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
+				E4B11B5C226929730075461B /* ReSwift.framework in Embed Libraries */,
 				E41B22C121FB6C3300D544F6 /* libmpdclient.2.dylib in Embed Libraries */,
 				E450ADA42229E7E00091BED3 /* PMKFoundation.framework in Embed Libraries */,
 				E421ACA4221F73C4008B2449 /* MediaKeyTap.framework in Embed Libraries */,
@@ -242,6 +255,18 @@
 		E4A83BEE2221F8CF0098FED6 /* AlbumArtPrefsController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AlbumArtPrefsController.swift; sourceTree = "<group>"; };
 		E4A83BF02221FAA00098FED6 /* PreferencesViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PreferencesViewController.swift; sourceTree = "<group>"; };
 		E4A83BF3222207D50098FED6 /* AlbumArtService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AlbumArtService.swift; sourceTree = "<group>"; };
+		E4B11B52226928F20075461B /* AppState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppState.swift; sourceTree = "<group>"; };
+		E4B11B572269296C0075461B /* ReSwift.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = ReSwift.framework; path = Carthage/Build/Mac/ReSwift.framework; sourceTree = "<group>"; };
+		E4B11B582269296C0075461B /* ReSwift.framework.dSYM */ = {isa = PBXFileReference; lastKnownFileType = wrapper.dsym; name = ReSwift.framework.dSYM; path = Carthage/Build/Mac/ReSwift.framework.dSYM; sourceTree = "<group>"; };
+		E4B11B60226A4BFF0075461B /* PlayerReducer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PlayerReducer.swift; sourceTree = "<group>"; };
+		E4B11B62226A4C510075461B /* AppReducer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppReducer.swift; sourceTree = "<group>"; };
+		E4B11B65226A4F830075461B /* PlayerState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PlayerState.swift; sourceTree = "<group>"; };
+		E4B11B67226A4FA00075461B /* QueueState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QueueState.swift; sourceTree = "<group>"; };
+		E4B11B69226A4FBC0075461B /* AlbumListState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AlbumListState.swift; sourceTree = "<group>"; };
+		E4B11B6C226A5B180075461B /* UpdateQueueAction.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UpdateQueueAction.swift; sourceTree = "<group>"; };
+		E4B11B6E226A5C7A0075461B /* UpdateStatusAction.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UpdateStatusAction.swift; sourceTree = "<group>"; };
+		E4B11B70226A64E60075461B /* UpdateElapsedTimeAction.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UpdateElapsedTimeAction.swift; sourceTree = "<group>"; };
+		E4B11B72226A6C770075461B /* TrackTimer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrackTimer.swift; sourceTree = "<group>"; };
 		E4C8B53B22342005009A20F3 /* PreferencesWindowController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PreferencesWindowController.swift; sourceTree = "<group>"; };
 		E4C8B53D22349002009A20F3 /* MPDIdle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MPDIdle.swift; sourceTree = "<group>"; };
 		E4E8CC8F2204EC7F0024217A /* Delegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Delegate.swift; sourceTree = "<group>"; };
@@ -260,12 +285,12 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				E45E4FE122516953004B537F /* CryptoSwift.framework in Frameworks */,
+				E4B11B5B226929730075461B /* ReSwift.framework in Frameworks */,
 				E41B22C021FB6BBA00D544F6 /* libmpdclient.2.dylib in Frameworks */,
-				E421ACA3221F73C4008B2449 /* MediaKeyTap.framework in Frameworks */,
-				E450AD8622262AE60091BED3 /* SwiftyJSON.framework in Frameworks */,
-				E45E4FE0225168DA004B537F /* CryptoSwift.framework in Frameworks */,
 				E450ADA32229E7E00091BED3 /* PMKFoundation.framework in Frameworks */,
+				E421ACA3221F73C4008B2449 /* MediaKeyTap.framework in Frameworks */,
+				E45E4FE122516953004B537F /* CryptoSwift.framework in Frameworks */,
+				E450AD8622262AE60091BED3 /* SwiftyJSON.framework in Frameworks */,
 				E450AD9222262C970091BED3 /* PromiseKit.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -316,6 +341,7 @@
 		E407861A2110CE6E006887B1 /* Persephone */ = {
 			isa = PBXGroup;
 			children = (
+				E4B11B6B226A5AF50075461B /* Actions */,
 				E407861B2110CE6E006887B1 /* AppDelegate.swift */,
 				E407861F2110CE70006887B1 /* Assets.xcassets */,
 				E4D1B597220BA3A20026F233 /* Controllers */,
@@ -330,8 +356,10 @@
 				E40786252110CE70006887B1 /* Persephone.entitlements */,
 				E450AD9E2229B9BC0091BED3 /* PersephoneBridgingHeader.h */,
 				E4A83BEC2221F5DD0098FED6 /* Preferences */,
+				E4B11B5F226A4BED0075461B /* Reducers */,
 				E4D1B598220BA3C90026F233 /* Resources */,
 				E4A83BF2222207BE0098FED6 /* Services */,
+				E4B11B64226A4F460075461B /* State */,
 				E408D3C3220E138B0006D9BE /* Views */,
 			);
 			path = Persephone;
@@ -397,6 +425,8 @@
 		E41B22BE21FB6B3300D544F6 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				E4B11B572269296C0075461B /* ReSwift.framework */,
+				E4B11B582269296C0075461B /* ReSwift.framework.dSYM */,
 				E45E4FDE225168DA004B537F /* CryptoSwift.framework */,
 				E45E4FDD225168DA004B537F /* CryptoSwift.framework.dSYM */,
 				E450ADA02229E7C90091BED3 /* PMKFoundation.framework */,
@@ -531,6 +561,36 @@
 			path = Services;
 			sourceTree = "<group>";
 		};
+		E4B11B5F226A4BED0075461B /* Reducers */ = {
+			isa = PBXGroup;
+			children = (
+				E4B11B60226A4BFF0075461B /* PlayerReducer.swift */,
+				E4B11B62226A4C510075461B /* AppReducer.swift */,
+			);
+			path = Reducers;
+			sourceTree = "<group>";
+		};
+		E4B11B64226A4F460075461B /* State */ = {
+			isa = PBXGroup;
+			children = (
+				E4B11B52226928F20075461B /* AppState.swift */,
+				E4B11B65226A4F830075461B /* PlayerState.swift */,
+				E4B11B67226A4FA00075461B /* QueueState.swift */,
+				E4B11B69226A4FBC0075461B /* AlbumListState.swift */,
+			);
+			path = State;
+			sourceTree = "<group>";
+		};
+		E4B11B6B226A5AF50075461B /* Actions */ = {
+			isa = PBXGroup;
+			children = (
+				E4B11B6C226A5B180075461B /* UpdateQueueAction.swift */,
+				E4B11B6E226A5C7A0075461B /* UpdateStatusAction.swift */,
+				E4B11B70226A64E60075461B /* UpdateElapsedTimeAction.swift */,
+			);
+			path = Actions;
+			sourceTree = "<group>";
+		};
 		E4D1B594220BA2490026F233 /* Models */ = {
 			isa = PBXGroup;
 			children = (
@@ -591,6 +651,7 @@
 				E4F6B462221E125900ACF42A /* QueueItem.swift */,
 				E419E2862249B96600216A8C /* Song.swift */,
 				E47E2FDC2220A6D100F747E6 /* Time.swift */,
+				E4B11B72226A6C770075461B /* TrackTimer.swift */,
 			);
 			path = Models;
 			sourceTree = "<group>";
@@ -724,6 +785,7 @@
 				E42A8F3C22176D6400A13ED9 /* README.md in Resources */,
 				E450AD8F22262C620091BED3 /* PromiseKit.framework.dSYM in Resources */,
 				E408D3CB220E341D0006D9BE /* AlbumViewItem.xib in Resources */,
+				E4B11B5A2269296C0075461B /* ReSwift.framework.dSYM in Resources */,
 				E40786232110CE70006887B1 /* Main.storyboard in Resources */,
 				E450ADA12229E7C90091BED3 /* PMKFoundation.framework.dSYM in Resources */,
 				E47E2FCC2220573500F747E6 /* MediaKeyTap.framework.dSYM in Resources */,
@@ -775,10 +837,14 @@
 				E4F6B467221E233200ACF42A /* AlbumDataSource.swift in Sources */,
 				E408D3C2220E134F0006D9BE /* AlbumViewController.swift in Sources */,
 				E40FE71B221B904300A4223F /* NSEvent.swift in Sources */,
+				E4B11B6D226A5B180075461B /* UpdateQueueAction.swift in Sources */,
+				E4B11B68226A4FA00075461B /* QueueState.swift in Sources */,
 				E4928E0B2218D62A001D4BEA /* CGColor.swift in Sources */,
 				E4C8B53E22349002009A20F3 /* MPDIdle.swift in Sources */,
+				E4B11B6F226A5C7A0075461B /* UpdateStatusAction.swift in Sources */,
 				E4F6B460221E119B00ACF42A /* QueueDataSource.swift in Sources */,
 				E4C8B53C22342005009A20F3 /* PreferencesWindowController.swift in Sources */,
+				E4B11B63226A4C510075461B /* AppReducer.swift in Sources */,
 				E41E5307223C019100173814 /* MPDClient+Status.swift in Sources */,
 				E41E5310223EF6CE00173814 /* AlbumArtService+Remote.swift in Sources */,
 				E41E530B223C033700173814 /* MPDClient+Album.swift in Sources */,
@@ -795,7 +861,9 @@
 				E4EB2379220F10B8008C70C0 /* MPDPair.swift in Sources */,
 				E4F6B463221E125900ACF42A /* QueueItem.swift in Sources */,
 				E4A83BF12221FAA00098FED6 /* PreferencesViewController.swift in Sources */,
+				E4B11B61226A4C000075461B /* PlayerReducer.swift in Sources */,
 				E465049A21E94DF500A70F4C /* WindowController.swift in Sources */,
+				E4B11B71226A64E60075461B /* UpdateElapsedTimeAction.swift in Sources */,
 				E41B22C621FB932700D544F6 /* MPDClient.swift in Sources */,
 				E40F41F3221EDE27004B6CB8 /* Preferences.swift in Sources */,
 				E47E2FDD2220A6D100F747E6 /* Time.swift in Sources */,
@@ -803,6 +871,7 @@
 				E439109822640213002982E9 /* SongNotifierService.swift in Sources */,
 				E407861C2110CE6E006887B1 /* AppDelegate.swift in Sources */,
 				E41E5309223C020400173814 /* MPDClient+Command.swift in Sources */,
+				E4B11B73226A6C770075461B /* TrackTimer.swift in Sources */,
 				E47E2FE52220AA0700F747E6 /* AlbumViewLayout.swift in Sources */,
 				E41E52FF223BF95E00173814 /* MPDClient+Transport.swift in Sources */,
 				E47E2FD322205D2500F747E6 /* MainWindow.swift in Sources */,
@@ -813,13 +882,16 @@
 				E4A83BF4222207D50098FED6 /* AlbumArtService.swift in Sources */,
 				E47E2FD5222071FD00F747E6 /* AlbumViewItem.swift in Sources */,
 				E408D3BE220E03EE0006D9BE /* RawRepresentable.swift in Sources */,
+				E4B11B66226A4F830075461B /* PlayerState.swift in Sources */,
 				E41E530E223EF4CF00173814 /* AlbumArtService+Caching.swift in Sources */,
 				E4E8CC922204F4B80024217A /* QueueViewController.swift in Sources */,
 				E41E5312223EF74A00173814 /* AlbumArtService+Filesystem.swift in Sources */,
 				E41E5301223BF99300173814 /* MPDClient+Queue.swift in Sources */,
 				E4EB237B220F7CF1008C70C0 /* MPDAlbum.swift in Sources */,
 				E41E5303223BF9C300173814 /* MPDClient+Idle.swift in Sources */,
+				E4B11B53226928F20075461B /* AppState.swift in Sources */,
 				E435E3E4221CD75D00184CFC /* NSImage.swift in Sources */,
+				E4B11B6A226A4FBC0075461B /* AlbumListState.swift in Sources */,
 				E41E5305223BFB0700173814 /* MPDClient+Error.swift in Sources */,
 				E435E3E2221CD4E200184CFC /* NSFont.swift in Sources */,
 			);

Persephone/Actions/UpdateElapsedTimeAction.swift

@@ -0,0 +1,13 @@
+//
+//  UpdateElapsedTimeAction.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import ReSwift
+
+struct UpdateElapsedTimeAction: Action {
+  var elapsedTimeMs: UInt = 0
+}

Persephone/Actions/UpdateQueueAction.swift

@@ -0,0 +1,13 @@
+//
+//  UpdateQueueAction.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import ReSwift
+
+struct UpdateQueueAction: Action {
+  var queue: [MPDClient.MPDSong]
+}

Persephone/Actions/UpdateStatusAction.swift

@@ -0,0 +1,13 @@
+//
+//  UpdateStatusAction.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import ReSwift
+
+struct UpdateStatusAction: Action {
+  var status: MPDClient.MPDStatus
+}

Persephone/AppDelegate.swift

@@ -7,6 +7,7 @@
 //
 
 import Cocoa
+import ReSwift
 import MediaKeyTap
 
 @NSApplicationMain
@@ -18,6 +19,10 @@ class AppDelegate: NSObject, NSApplicationDelegate, MediaKeyTapDelegate {
     withDelegate: NotificationsController()
   )
 
+  static let trackTimer = TrackTimer()
+
+  static let store = Store(reducer: appReducer, state: nil)
+
   func applicationDidFinishLaunching(_ aNotification: Notification) {
     connect()
 

Persephone/Controllers/NotificationsController.swift

@@ -1,5 +1,5 @@
 //
-//  MPDClientNotificationHandler.swift
+//  NotificationsController.swift
 //  Persephone
 //
 //  Created by Daniel Barber on 2019/2/02.
@@ -19,21 +19,23 @@ class NotificationsController: MPDClientDelegate {
     sendNotification(name: Notification.willDisconnect)
   }
 
-  func didUpdateState(mpdClient: MPDClient, state: MPDClient.MPDStatus.State) {
+  func didUpdateStatus(mpdClient: MPDClient, status: MPDClient.MPDStatus) {
+    AppDelegate.store.dispatch(UpdateStatusAction(status: status))
     sendNotification(
       name: Notification.stateChanged,
-      userInfo: [Notification.stateKey: state]
+      userInfo: [Notification.stateKey: status.state]
+    )
+    sendNotification(
+      name: Notification.timeChanged,
+      userInfo: [
+        Notification.totalTimeKey: status.totalTime,
+        Notification.elapsedTimeMsKey: status.elapsedTimeMs
+      ]
     )
   }
 
   func didUpdateTime(mpdClient: MPDClient, total: UInt, elapsedMs: UInt) {
-    sendNotification(
+
-      name: Notification.timeChanged,
-      userInfo: [
-        Notification.totalTimeKey: total,
-        Notification.elapsedTimeMsKey: elapsedMs
-      ]
-    )
   }
 
   func willStartDatabaseUpdate(mpdClient: MPDClient) {
@@ -45,6 +47,7 @@ class NotificationsController: MPDClientDelegate {
   }
 
   func didUpdateQueue(mpdClient: MPDClient, queue: [MPDClient.MPDSong]) {
+    //AppDelegate.store.dispatch(UpdateQueueAction(queue: queue))
     sendNotification(
       name: Notification.queueChanged,
       userInfo: [Notification.queueKey: queue]

Persephone/Controllers/WindowController.swift

@@ -7,34 +7,23 @@
 //
 
 import Cocoa
+import ReSwift
+
+class WindowController: NSWindowController, StoreSubscriber {
+  typealias StoreSubscriberStateType = AppState
 
-class WindowController: NSWindowController {
   enum TransportAction: Int {
     case prevTrack, playPause, stop, nextTrack
   }
 
   var state: MPDClient.MPDStatus.State?
-  var totalTime: UInt?
-  var elapsedTimeMs: UInt?
   var trackTimer: Timer?
 
   override func windowDidLoad() {
     super.windowDidLoad()
     window?.titleVisibility = .hidden
 
-    NotificationCenter.default.addObserver(
+    AppDelegate.store.subscribe(self)
-      self,
-      selector: #selector(stateChanged(_:)),
-      name: Notification.stateChanged,
-      object: AppDelegate.mpdClient
-    )
-
-    NotificationCenter.default.addObserver(
-      self,
-      selector: #selector(timeChanged(_:)),
-      name: Notification.timeChanged,
-      object: AppDelegate.mpdClient
-    )
 
     NotificationCenter.default.addObserver(
       self,
@@ -54,6 +43,15 @@ class WindowController: NSWindowController {
     trackRemaining.font = .timerFont
   }
 
+  func newState(state: WindowController.StoreSubscriberStateType) {
+    self.state = state.playerState.state
+
+    DispatchQueue.main.async {
+      self.setTransportControlState(state.playerState)
+      self.setTrackProgressControls(state.playerState)
+    }
+  }
+
   override func keyDown(with event: NSEvent) {
     switch event.keyCode {
     case NSEvent.keyCodeSpace:
@@ -63,17 +61,8 @@ class WindowController: NSWindowController {
     }
   }
 
-  @objc func stateChanged(_ notification: Notification) {
+  func setTransportControlState(_ state: PlayerState) {
-    guard let state = notification.userInfo?[Notification.stateKey] as? MPDClient.MPDStatus.State
+    guard let state = state.state else { return }
-      else { return }
-
-    self.state = state
-
-    setTransportControlState()
-  }
-
-  func setTransportControlState() {
-    guard let state = state else { return }
 
     transportControls.setEnabled(state.isOneOf([.playing, .paused]), forSegment: 0)
     transportControls.setEnabled(state.isOneOf([.playing, .paused, .stopped]), forSegment: 1)
@@ -87,64 +76,37 @@ class WindowController: NSWindowController {
     }
   }
 
-  @objc func timeChanged(_ notification: Notification) {
+  func setTrackProgressControls(_ playerState: PlayerState) {
-    guard let totalTime = notification.userInfo?[Notification.totalTimeKey] as? UInt,
+    guard let state = playerState.state,
-      let elapsedTimeMs = notification.userInfo?[Notification.elapsedTimeMsKey] as? UInt
+      let totalTime = playerState.totalTime,
+      let elapsedTimeMs = playerState.elapsedTimeMs
       else { return }
 
-    self.totalTime = totalTime
+    trackProgressBar.isEnabled = state.isOneOf([.playing, .paused])
-    self.elapsedTimeMs = elapsedTimeMs
-
-    setTrackProgressControls()
-  }
-
-  func setTrackProgressControls() {
-    guard let totalTime = totalTime,
-      let elapsedTimeMs = elapsedTimeMs
-      else { return }
-
-    trackProgressBar.isEnabled = [.playing, .paused].contains(state)
     trackProgressBar.maxValue = Double(totalTime * 1000)
+    trackProgressBar.integerValue = Int(elapsedTimeMs)
 
-    if state == .playing {
+    setTimeElapsed(elapsedTimeMs)
-      trackTimer?.invalidate()
+    setTimeRemaining(elapsedTimeMs, totalTime * 1000)
-
-      trackTimer = Timer.scheduledTimer(
-        timeInterval: 0.25,
-        target: self,
-        selector: #selector(updateProgress(_:)),
-        userInfo: [
-          "startTime": CACurrentMediaTime(),
-          "startElapsed": Double(elapsedTimeMs) / 1000
-        ],
-        repeats: true
-      )
-    } else {
-      trackTimer?.invalidate()
-
-      trackProgressBar.integerValue = Int(elapsedTimeMs)
-      setTimeElapsed()
-      setTimeRemaining()
-   }
   }
 
-  @objc func updateProgress(_ timer: Timer) {
+//  func updateProgressState() {
-    let currentTime = CACurrentMediaTime()
+//    let currentTime = CACurrentMediaTime()
-
+//
-    guard let userInfo = timer.userInfo as? Dictionary<String, Any>,
+//    guard let userInfo = timer.userInfo as? Dictionary<String, Any>,
-      let startTime = userInfo["startTime"] as? Double,
+//      let startTime = userInfo["startTime"] as? Double,
-      let startElapsed = userInfo["startElapsed"] as? Double
+//      let startElapsed = userInfo["startElapsed"] as? Double
-      else { return }
+//      else { return }
-
+//
-    let timeDiff = currentTime - startTime
+//    let timeDiff = currentTime - startTime
-    let newElapsedTimeMs = (startElapsed + timeDiff) * 1000
+//    let newElapsedTimeMs = (startElapsed + timeDiff) * 1000
-
+//
-    self.elapsedTimeMs = UInt(newElapsedTimeMs)
+//    self.elapsedTimeMs = UInt(newElapsedTimeMs)
-    trackProgressBar.integerValue = Int(newElapsedTimeMs)
+//    trackProgressBar.integerValue = Int(newElapsedTimeMs)
-
+//
-    setTimeElapsed()
+//    setTimeElapsed()
-    setTimeRemaining()
+//    setTimeRemaining()
-  }
+//  }
 
   @objc func startDatabaseUpdatingIndicator() {
     databaseUpdatingIndicator.startAnimation(self)
@@ -154,7 +116,7 @@ class WindowController: NSWindowController {
     databaseUpdatingIndicator.stopAnimation(self)
   }
 
-  func setTimeElapsed() {
+  func setTimeElapsed(_ elapsedTimeMs: UInt?) {
     guard let elapsedTimeMs = elapsedTimeMs else { return }
 
     let time = Time(timeInSeconds: Int(elapsedTimeMs) / 1000)
@@ -162,38 +124,40 @@ class WindowController: NSWindowController {
     trackProgress.stringValue = time.formattedTime
   }
 
-  func setTimeRemaining() {
+  func setTimeRemaining(_ elapsedTimeMs: UInt?, _ totalTime: UInt?) {
     guard let elapsedTimeMs = elapsedTimeMs,
       let totalTime = totalTime
       else { return }
 
-    let time = Time(timeInSeconds: -(Int(totalTime) - Int(elapsedTimeMs) / 1000))
+    let time = Time(
+      timeInSeconds: -(Int(totalTime) - Int(elapsedTimeMs)) / 1000
+    )
 
     trackRemaining.stringValue = time.formattedTime
   }
 
   // TODO: Refactor this using a gesture recognizer
-  @IBAction func changeTrackProgress(_ sender: NSSlider) {
+//  @IBAction func changeTrackProgress(_ sender: NSSlider) {
-    guard let event = NSApplication.shared.currentEvent else {
+//    guard let event = NSApplication.shared.currentEvent else {
-      return
+//      return
-    }
+//    }
-
+//
-    switch event.type {
+//    switch event.type {
-    case .leftMouseDown:
+//    case .leftMouseDown:
-      trackTimer?.invalidate()
+//      trackTimer?.invalidate()
-    case .leftMouseDragged:
+//    case .leftMouseDragged:
-      self.elapsedTimeMs = UInt(sender.integerValue)
+//      self.elapsedTimeMs = UInt(sender.integerValue)
-
+//
-      setTimeElapsed()
+//      setTimeElapsed()
-      setTimeRemaining()
+//      setTimeRemaining()
-    case .leftMouseUp:
+//    case .leftMouseUp:
-      let seekTime = Float(sender.integerValue) / 1000
+//      let seekTime = Float(sender.integerValue) / 1000
-
+//
-      AppDelegate.mpdClient.seekCurrentSong(timeInSeconds: seekTime)
+//      AppDelegate.mpdClient.seekCurrentSong(timeInSeconds: seekTime)
-    default:
+//    default:
-      break
+//      break
-    }
+//    }
-  }
+//  }
 
   @IBAction func handleTransportControl(_ sender: NSSegmentedControl) {
     guard let transportAction = TransportAction(rawValue: sender.selectedSegment)

Persephone/MPDClient/Extensions/MPDClient+Connection.swift

@@ -29,8 +29,7 @@ extension MPDClient {
       self.idle()
 
       self.delegate?.didConnect(mpdClient: self)
-      self.delegate?.didUpdateState(mpdClient: self, state: self.status!.state)
+      self.delegate?.didUpdateStatus(mpdClient: self, status: self.status!)
-      self.delegate?.didUpdateTime(mpdClient: self, total: self.status!.totalTime, elapsedMs: self.status!.elapsedTimeMs)
       self.delegate?.didUpdateQueue(mpdClient: self, queue: self.queue)
       self.delegate?.didUpdateQueuePos(mpdClient: self, song: self.status!.song)
     }

Persephone/MPDClient/Extensions/MPDClient+Idle.swift

@@ -43,9 +43,8 @@ extension MPDClient {
       self.fetchStatus()
 
       if let status = self.status {
+        self.delegate?.didUpdateStatus(mpdClient: self, status: status)
         self.delegate?.didUpdateQueuePos(mpdClient: self, song: status.song)
-        self.delegate?.didUpdateState(mpdClient: self, state: status.state)
-        self.delegate?.didUpdateTime(mpdClient: self, total: status.totalTime, elapsedMs: status.elapsedTimeMs)
       }
     }
     if mpdIdle.contains(.update) {

Persephone/MPDClient/Protocols/Delegate.swift

@@ -12,8 +12,7 @@ protocol MPDClientDelegate {
   func didConnect(mpdClient: MPDClient)
   func willDisconnect(mpdClient: MPDClient)
 
-  func didUpdateState(mpdClient: MPDClient, state: MPDClient.MPDStatus.State)
+  func didUpdateStatus(mpdClient: MPDClient, status: MPDClient.MPDStatus)
-  func didUpdateTime(mpdClient: MPDClient, total: UInt, elapsedMs: UInt)
 
   func willStartDatabaseUpdate(mpdClient: MPDClient)
   func didFinishDatabaseUpdate(mpdClient: MPDClient)

Persephone/Models/TrackTimer.swift

@@ -0,0 +1,55 @@
+//
+//  TrackTimer.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import Cocoa
+
+class TrackTimer: NSObject {
+  var timer: Timer?
+  var startTime: CFTimeInterval = CACurrentMediaTime()
+  var startElapsed: Double = 0
+
+  func start(elapsedTimeMs: UInt?) {
+    print("Starting timer")
+    guard let elapsedTimeMs = elapsedTimeMs else { return }
+    print(elapsedTimeMs)
+    
+    timer?.invalidate()
+
+    startTime = CACurrentMediaTime()
+    startElapsed = Double(elapsedTimeMs) / 1000
+
+    timer = Timer.scheduledTimer(
+      withTimeInterval: 0.25,
+      repeats: true
+    ) { _ in
+      let currentTime = CACurrentMediaTime()
+
+      let timeDiff = currentTime - self.startTime
+      let newElapsedTimeMs = UInt((self.startElapsed + timeDiff) * 1000)
+
+      DispatchQueue.main.async {
+        AppDelegate.store.dispatch(
+          UpdateElapsedTimeAction(elapsedTimeMs: newElapsedTimeMs)
+        )
+      }
+    }
+  }
+
+  func stop(elapsedTimeMs: UInt?) {
+    print("Stopping timer")
+    guard let elapsedTimeMs = elapsedTimeMs else { return }
+
+    timer?.invalidate()
+
+    DispatchQueue.main.async {
+      AppDelegate.store.dispatch(
+        UpdateElapsedTimeAction(elapsedTimeMs: elapsedTimeMs)
+      )
+    }
+  }
+}

Persephone/Reducers/AppReducer.swift

@@ -0,0 +1,16 @@
+//
+//  AppReducer.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import Foundation
+import ReSwift
+
+func appReducer(action: Action, state: AppState?) -> AppState {
+  return AppState(
+    playerState: playerReducer(action: action, state: state?.playerState)
+  )
+}

Persephone/Reducers/PlayerReducer.swift

@@ -0,0 +1,46 @@
+//
+//  PlayerReducer.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import Cocoa
+import ReSwift
+
+func playerReducer(action: Action, state: PlayerState?) -> PlayerState {
+  var state = state ?? PlayerState()
+
+  switch action {
+  case let action as UpdateStatusAction:
+    state.status = action.status
+    state.state = action.status.state
+    state.totalTime = action.status.totalTime
+    state.elapsedTimeMs = action.status.elapsedTimeMs
+
+    if state.state == .playing {
+      AppDelegate.trackTimer.start(elapsedTimeMs: state.elapsedTimeMs)
+    } else {
+      AppDelegate.trackTimer.stop(elapsedTimeMs: state.elapsedTimeMs)
+    }
+
+  case let action as UpdateElapsedTimeAction:
+    state.elapsedTimeMs = action.elapsedTimeMs
+
+  default:
+    break
+  }
+
+  return state
+}
+
+func updateElapsedTime(_ timer: Timer) {
+  guard let userInfo = timer.userInfo as? Dictionary<String, Any>,
+    let elapsedTimeMs = userInfo["elapsedTimeMs"] as? UInt
+    else { return }
+
+  AppDelegate.store.dispatch(
+    UpdateElapsedTimeAction(elapsedTimeMs: elapsedTimeMs)
+  )
+}

Persephone/State/AlbumListState.swift

@@ -0,0 +1,13 @@
+//
+//  AlbumListState.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import ReSwift
+
+struct AlbumListState: StateType {
+  var albums: [Album] = []
+}

Persephone/State/AppState.swift

@@ -0,0 +1,15 @@
+//
+//  AppState.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/18.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import ReSwift
+
+struct AppState: StateType {
+  var playerState = PlayerState()
+//  var queueState = QueueState()
+//  var albumListState = AlbumListState()
+}

Persephone/State/PlayerState.swift

@@ -0,0 +1,19 @@
+//
+//  PlayerState.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import Cocoa
+import ReSwift
+
+struct PlayerState: StateType {
+  var status: MPDClient.MPDStatus?
+
+  var state: MPDClient.MPDStatus.State?
+
+  var totalTime: UInt?
+  var elapsedTimeMs: UInt?
+}

Persephone/State/QueueState.swift

@@ -0,0 +1,14 @@
+//
+//  QueueState.swift
+//  Persephone
+//
+//  Created by Daniel Barber on 2019/4/19.
+//  Copyright © 2019 Dan Barber. All rights reserved.
+//
+
+import ReSwift
+
+struct QueueState: StateType {
+  var queue: [QueueItem] = []
+  var queuePos: Int = -1
+}