Add window titles to main and compose scenes

e0d97cd2a8 introduced a regression on Pleroma, because specifying the
allowed types of notifications in the Masto API was only added in 3.5

Packages/Pachyderm/Sources/Pachyderm/Client.swift

@@ -306,6 +306,14 @@ public class Client {
         return request
     }
     
+    public static func getNotifications(excludedTypes: [Notification.Kind], range: RequestRange = .default) -> Request<[Notification]> {
+        var request = Request<[Notification]>(method: .get, path: "/api/v1/notifications", queryParameters:
+            "exclude_types" => excludedTypes.map { $0.rawValue }
+        )
+        request.range = range
+        return request
+    }
+    
     public static func clearNotifications() -> Request<Empty> {
         return Request<Empty>(method: .post, path: "/api/v1/notifications/clear")
     }

Packages/TTTKit/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/config/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/TTTKit/Package.swift

@@ -0,0 +1,31 @@
+// swift-tools-version: 5.7
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "TTTKit",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "TTTKit",
+            targets: ["TTTKit"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .target(
+            name: "TTTKit",
+            dependencies: []),
+        .testTarget(
+            name: "TTTKitTests",
+            dependencies: ["TTTKit"]),
+    ]
+)

Packages/TTTKit/README.md

@@ -0,0 +1,3 @@
+# TTTKit
+
+A description of this package.

Packages/TTTKit/Sources/TTTKit/AI/GameModel.swift

@@ -0,0 +1,152 @@
+//
+//  GameModel.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+import GameKit
+
+public class GameModel: NSObject, NSCopying, GKGameModel {
+    private var controller: GameController
+    
+    public init(controller: GameController) {
+        self.controller = controller
+    }
+    
+    // MARK: GKGameModel
+    
+    public var players: [GKGameModelPlayer]? {
+        [Player.x, Player.o]
+    }
+    
+    public var activePlayer: GKGameModelPlayer? {
+        switch controller.state {
+        case .playAnywhere(let mark), .playSpecific(let mark, column: _, row: _):
+            switch mark {
+            case .x:
+                return Player.x
+            case .o:
+                return Player.o
+            }
+        case .end(_):
+            return nil
+        }
+    }
+    
+    public func setGameModel(_ gameModel: GKGameModel) {
+        let other = (gameModel as! GameModel).controller
+        self.controller = GameController(state: other.state, board: other.board)
+    }
+    
+    public func gameModelUpdates(for player: GKGameModelPlayer) -> [GKGameModelUpdate]? {
+        guard let player = player as? Player else {
+            return nil
+        }
+        let mark = player.mark
+        
+        switch controller.state {
+        case .playAnywhere:
+            return updatesForPlayAnywhere(mark: mark)
+        case .playSpecific(_, column: let col, row: let row):
+            return updatesForPlaySpecific(mark: mark, board: (col, row))
+        case .end:
+            return nil
+        }
+    }
+    
+    public func apply(_ gameModelUpdate: GKGameModelUpdate) {
+        let update = gameModelUpdate as! Update
+        switch controller.state {
+        case .playAnywhere(update.mark), .playSpecific(update.mark, column: update.subBoard.column, row: update.subBoard.row):
+            break
+        default:
+            fatalError()
+        }
+        controller.play(on: update.subBoard, column: update.column, row: update.row)
+    }
+    
+    public func score(for player: GKGameModelPlayer) -> Int {
+        guard let player = player as? Player else {
+            return .min
+        }
+        
+        var score = 0
+        for column in 0..<3 {
+            for row in 0..<3 {
+                let subBoard = controller.board.getSubBoard(column: column, row: row)
+                if let win = subBoard.win {
+                    if win.mark == player.mark {
+                        score += 10
+                    } else {
+                        score -= 5
+                    }
+                } else {
+                    score += 4 * subBoard.potentialWinCount(for: player.mark)
+                    score -= 2 * subBoard.potentialWinCount(for: player.mark.next)
+                }
+            }
+        }
+        if case .playAnywhere(let mark) = controller.state {
+            if mark == player.mark {
+                score += 5
+            }
+        }
+        score += 8 * controller.board.potentialWinCount(for: player.mark)
+        score -= 4 * controller.board.potentialWinCount(for: player.mark.next)
+        return score
+    }
+    
+    public func isWin(for player: GKGameModelPlayer) -> Bool {
+        let mark = (player as! Player).mark
+        return controller.board.win?.mark == mark
+    }
+    
+    private func updatesForPlayAnywhere(mark: Mark) -> [Update] {
+        var updates = [Update]()
+        for boardColumn in 0..<3 {
+            for boardRow in 0..<3 {
+                let subBoard = controller.board.getSubBoard(column: boardColumn, row: boardRow)
+                guard !subBoard.ended else { continue }
+                
+                for column in 0..<3 {
+                    for row in 0..<3 {
+                        guard subBoard[column, row] == nil else { continue }
+                        updates.append(Update(mark: mark, subBoard: (boardColumn, boardRow), column: column, row: row))
+                    }
+                }
+            }
+        }
+        return updates
+    }
+    
+    private func updatesForPlaySpecific(mark: Mark, board: (column: Int, row: Int)) -> [Update] {
+        let subBoard = controller.board.getSubBoard(column: board.column, row: board.row)
+        var updates = [Update]()
+        for column in 0..<3 {
+            for row in 0..<3 {
+                guard subBoard[column, row] == nil else { continue }
+                updates.append(Update(mark: mark, subBoard: board, column: column, row: row))
+            }
+        }
+        return updates
+    }
+    
+    // MARK: NSCopying
+    
+    public func copy(with zone: NSZone? = nil) -> Any {
+        return GameModel(controller: GameController(state: controller.state, board: controller.board))
+    }
+    
+}
+
+extension Board {
+    func potentialWinCount(for mark: Mark) -> Int {
+        return Win.allPoints.filter { points in
+            let empty = points.filter { self[$0] == nil }.count
+            let matching = points.filter { self[$0] == mark }.count
+            return matching == 2 && empty == 1
+        }.count
+    }
+}

Packages/TTTKit/Sources/TTTKit/AI/Player.swift

@@ -0,0 +1,24 @@
+//
+//  Player.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+import GameKit
+
+class Player: NSObject, GKGameModelPlayer {
+    static let x = Player(playerId: 0)
+    static let o = Player(playerId: 1)
+    
+    let playerId: Int
+    
+    var mark: Mark {
+        playerId == 0 ? .x : .o
+    }
+    
+    private init(playerId: Int) {
+        self.playerId = playerId
+    }
+}

Packages/TTTKit/Sources/TTTKit/AI/Update.swift

@@ -0,0 +1,25 @@
+//
+//  Update.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+import GameKit
+
+class Update: NSObject, GKGameModelUpdate {
+    let mark: Mark
+    let subBoard: (column: Int, row: Int)
+    let column: Int
+    let row: Int
+    
+    init(mark: Mark, subBoard: (Int, Int), column: Int, row: Int) {
+        self.mark = mark
+        self.subBoard = subBoard
+        self.column = column
+        self.row = row
+    }
+    
+    var value: Int = 0
+}

Packages/TTTKit/Sources/TTTKit/Logic/GameController.swift

@@ -0,0 +1,120 @@
+//
+//  GameController.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+
+public class GameController: ObservableObject {
+    
+    @Published public private(set) var state: State
+    @Published public private(set) var board: SuperTicTacToeBoard
+    
+    public init() {
+        self.state = .playAnywhere(.x)
+        self.board = SuperTicTacToeBoard()
+    }
+    
+    init(state: State, board: SuperTicTacToeBoard) {
+        self.state = state
+        self.board = board
+    }
+    
+    public func play(on subBoard: (column: Int, row: Int), column: Int, row: Int) {
+        guard board.getSubBoard(column: subBoard.column, row: subBoard.row)[column, row] == nil else {
+            return
+        }
+        let activePlayer: Mark
+        switch state {
+        case .playAnywhere(let mark):
+            activePlayer = mark
+        case .playSpecific(let mark, column: subBoard.column, row: subBoard.row):
+            activePlayer = mark
+        default:
+            return
+        }
+        
+        board.play(mark: activePlayer, subBoard: subBoard, column: column, row: row)
+        
+        if let win = board.win {
+            state = .end(.won(win))
+        } else if board.tied {
+            state = .end(.tie)
+        } else {
+            let nextSubBoard = board.getSubBoard(column: column, row: row)
+            if nextSubBoard.ended {
+                state = .playAnywhere(activePlayer.next)
+            } else {
+                state = .playSpecific(activePlayer.next, column: column, row: row)
+            }
+        }
+    }
+    
+    private func canPlay(on subBoard: (column: Int, row: Int)) -> Bool {
+        switch state {
+        case .playAnywhere(_):
+            return true
+        case .playSpecific(_, column: subBoard.column, row: subBoard.row):
+            return true
+        default:
+            return false
+        }
+    }
+    
+}
+
+public extension GameController {
+    enum State {
+        case playAnywhere(Mark)
+        case playSpecific(Mark, column: Int, row: Int)
+        case end(Result)
+        
+        public var displayName: String {
+            switch self {
+            case .playAnywhere(_):
+                return "Play anywhere"
+            case .playSpecific(_, column: let col, row: let row):
+                switch (col, row) {
+                case (0, 0):
+                    return "Play in the top left"
+                case (1, 0):
+                    return "Play in the top middle"
+                case (2, 0):
+                    return "Play in the top right"
+                case (0, 1):
+                    return "Play in the middle left"
+                case (1, 1):
+                    return "Play in the center"
+                case (2, 1):
+                    return "Play in the middle right"
+                case (0, 2):
+                    return "Play in the bottom left"
+                case (1, 2):
+                    return "Play in the bottom middle"
+                case (2, 2):
+                    return "Play in the bottom right"
+                default:
+                    fatalError()
+                }
+            case .end(.tie):
+                return "It's a tie!"
+            case .end(.won(let win)):
+                switch win.mark {
+                case .x:
+                    return "X wins!"
+                case .o:
+                    return "O wins!"
+                }
+            }
+        }
+    }
+}
+
+public extension GameController {
+    enum Result {
+        case won(Win)
+        case tie
+    }
+}

Packages/TTTKit/Sources/TTTKit/Model/Board.swift

@@ -0,0 +1,53 @@
+//
+//  Board.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+
+public protocol Board {
+    subscript(_ column: Int, _ row: Int) -> Mark? { get }
+}
+
+extension Board {
+    subscript(_ point: (column: Int, row: Int)) -> Mark? {
+        get {
+            self[point.column, point.row]
+        }
+    }
+    
+    public var full: Bool {
+        for column in 0..<3 {
+            for row in 0..<3 {
+                if self[column, row] == nil {
+                    return false
+                }
+            }
+        }
+        return true
+    }
+    
+    public var win: Win? {
+        for points in Win.allPoints {
+            if let mark = self[points[0]],
+               self[points[1]] == mark && self[points[2]] == mark {
+                return Win(mark: mark, points: points)
+            }
+        }
+        return nil
+    }
+    
+    public var won: Bool {
+        win != nil
+    }
+    
+    public var tied: Bool {
+        full && !won
+    }
+    
+    public var ended: Bool {
+        won || tied
+    }
+}

Packages/TTTKit/Sources/TTTKit/Model/Mark.swift

@@ -0,0 +1,21 @@
+//
+//  Mark.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+
+public enum Mark {
+    case x, o
+    
+    public var next: Mark {
+        switch self {
+        case .x:
+            return .o
+        case .o:
+            return .x
+        }
+    }
+}

Packages/TTTKit/Sources/TTTKit/Model/SuperTicTacToeBoard.swift

@@ -0,0 +1,32 @@
+//
+//  SuperTicTacToeBoard.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+
+public struct SuperTicTacToeBoard: Board {
+    
+    private var boards: [[TicTacToeBoard]] = [
+        [TicTacToeBoard(), TicTacToeBoard(), TicTacToeBoard()],
+        [TicTacToeBoard(), TicTacToeBoard(), TicTacToeBoard()],
+        [TicTacToeBoard(), TicTacToeBoard(), TicTacToeBoard()],
+    ]
+    
+    public subscript(_ column: Int, _ row: Int) -> Mark? {
+        get {
+            getSubBoard(column: column, row: row).win?.mark
+        }
+    }
+    
+    public func getSubBoard(column: Int, row: Int) -> TicTacToeBoard {
+        return boards[row][column]
+    }
+    
+    public mutating func play(mark: Mark, subBoard: (column: Int, row: Int), column: Int, row: Int) {
+        boards[subBoard.row][subBoard.column].play(mark: mark, column: column, row: row)
+    }
+    
+}

Packages/TTTKit/Sources/TTTKit/Model/TicTacToeBoard.swift

@@ -0,0 +1,39 @@
+//
+//  TicTacToeBoard.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+
+public struct TicTacToeBoard: Board {
+    private var marks: [[Mark?]] = [
+        [nil, nil, nil],
+        [nil, nil, nil],
+        [nil, nil, nil],
+    ]
+    
+    init() {
+    }
+    
+    init(marks: [[Mark?]]) {
+        precondition(marks.count == 3)
+        precondition(marks.allSatisfy { $0.count == 3 })
+        self.marks = marks
+    }
+    
+    public subscript(_ column: Int, _ row: Int) -> Mark? {
+        get {
+            marks[row][column]
+        }
+    }
+    
+    public func canPlay(column: Int, row: Int) -> Bool {
+        return self[column, row] == nil
+    }
+    
+    public mutating func play(mark: Mark, column: Int, row: Int) {
+        marks[row][column] = mark
+    }
+}

Packages/TTTKit/Sources/TTTKit/Model/Win.swift

@@ -0,0 +1,24 @@
+//
+//  Win.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import Foundation
+
+public struct Win {
+    public let mark: Mark
+    public let points: [(column: Int, row: Int)]
+    
+    static let allPoints: [[(Int, Int)]] = [
+        [(0, 0), (1, 1), (2, 2)], // top left diag
+        [(2, 0), (1, 1), (0, 2)], // top right diag
+        [(0, 0), (1, 0), (2, 0)], // top row
+        [(0, 1), (1, 1), (2, 1)], // middle row
+        [(0, 2), (1, 2), (2, 2)], // bottom row
+        [(0, 0), (0, 1), (0, 2)], // left col
+        [(1, 0), (1, 1), (1, 2)], // middle col
+        [(2, 0), (2, 1), (2, 2)], // right col
+    ]
+}

Packages/TTTKit/Sources/TTTKit/UI/BoardView.swift

@@ -0,0 +1,88 @@
+//
+//  BoardView.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+struct BoardView<Cell: View>: View {
+    let board: any Board
+    @Binding var cellSize: CGFloat
+    let spacing: CGFloat
+    let cellProvider: (_ column: Int, _ row: Int) -> Cell
+    
+    init(board: any Board, cellSize: Binding<CGFloat>, spacing: CGFloat, @ViewBuilder cellProvider: @escaping (Int, Int) -> Cell) {
+        self.board = board
+        self._cellSize = cellSize
+        self.spacing = spacing
+        self.cellProvider = cellProvider
+    }
+    
+    var body: some View {
+        ZStack {
+            if let win = board.win {
+                winOverlay(win)
+            }
+            
+            Grid(horizontalSpacing: 10, verticalSpacing: 10) {
+                GridRow {
+                    cellProvider(0, 0)
+                        .background(GeometryReader { proxy in
+                            Color.clear
+                                .preference(key: MarkSizePrefKey.self, value: proxy.size.width)
+                                .onPreferenceChange(MarkSizePrefKey.self) { newValue in
+                                    cellSize = newValue
+                                }
+                        })
+                    cellProvider(1, 0)
+                    cellProvider(2, 0)
+                }
+                GridRow {
+                    cellProvider(0, 1)
+                    cellProvider(1, 1)
+                    cellProvider(2, 1)
+                }
+                GridRow {
+                    cellProvider(0, 2)
+                    cellProvider(1, 2)
+                    cellProvider(2, 2)
+                }
+            }
+            
+            let sepOffset = (cellSize + spacing) / 2
+            Separator(axis: .vertical)
+                .offset(x: -sepOffset)
+            Separator(axis: .vertical)
+                .offset(x: sepOffset)
+            Separator(axis: .horizontal)
+                .offset(y: -sepOffset)
+            Separator(axis: .horizontal)
+                .offset(y: sepOffset)
+        }
+        .padding(.all, spacing / 2)
+        .aspectRatio(1, contentMode: .fit)
+    }
+    
+    private func winOverlay(_ win: Win) -> some View {
+        let pointsWithIndices = win.points.map { ($0, $0.row * 3 + $0.column) }
+        let cellSize = cellSize + spacing
+        return ForEach(pointsWithIndices, id: \.1) { (point, _) in
+            Rectangle()
+                .foregroundColor(Color(UIColor.green))
+                .opacity(0.5)
+                .frame(width: cellSize, height: cellSize)
+                .offset(x: CGFloat(point.column - 1) * cellSize, y: CGFloat(point.row - 1) * cellSize)
+        }
+    }
+}
+
+private struct MarkSizePrefKey: PreferenceKey {
+    static var defaultValue: CGFloat = 0
+    
+    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
+        value = nextValue()
+    }
+}

Packages/TTTKit/Sources/TTTKit/UI/GameView.swift

@@ -0,0 +1,81 @@
+//
+//  GameView.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+public struct GameView: View {
+    @ObservedObject private var controller: GameController
+    @State private var cellSize: CGFloat = 0
+    @State private var scaleAnchor: UnitPoint = .center
+    @State private var focusedSubBoard: (column: Int, row: Int)? = nil
+    
+    public init(controller: GameController) {
+        self.controller = controller
+    }
+    
+    public var body: some View {
+        let scale: CGFloat = focusedSubBoard == nil ? 1 : 2.5
+        return boardView
+            .scaleEffect(x: scale, y: scale, anchor: scaleAnchor)
+            .clipped()
+    }
+    
+    private var boardView: some View {
+        BoardView(board: controller.board, cellSize: $cellSize, spacing: 10) { column, row in
+            ZStack {
+                if case .playSpecific(_, column: column, row: row) = controller.state {
+                    Color.teal
+                        .padding(.all, -5)
+                        .opacity(0.4)
+                }
+                
+                let board = controller.board.getSubBoard(column: column, row: row)
+                SubBoardView(board: board, cellTapped: cellTapHandler(column, row))
+                    .environment(\.separatorColor, Color.gray.opacity(0.6))
+                    .contentShape(Rectangle())
+                    .onTapGesture {
+                        switch controller.state {
+                        case .playAnywhere(_), .playSpecific(_, column: column, row: row):
+                            scaleAnchor = UnitPoint(x: CGFloat(column) * 0.5, y: CGFloat(row) * 0.5)
+                            withAnimation(.easeInOut(duration: 0.3)) {
+                                focusedSubBoard = (column, row)
+                            }
+                        default:
+                            break
+                        }
+                    }
+                    .opacity(board.won ? 0.8 : 1)
+                
+                if let mark = board.win?.mark {
+                    MarkView(mark: mark)
+                }
+            }
+        }
+    }
+    
+    private func cellTapHandler(_ column: Int, _ row: Int) -> ((Int, Int) -> Void)? {
+        guard focusedSubBoard?.column == column && focusedSubBoard?.row == row else {
+            return nil
+        }
+        let subBoard = (column, row)
+        return { column, row in
+            controller.play(on: subBoard, column: column, row: row)
+            withAnimation(.easeInOut(duration: 0.3)) {
+                focusedSubBoard = nil
+            }
+        }
+    }
+}
+
+@available(iOS 16.0, *)
+struct GameView_Previews: PreviewProvider {
+    static var previews: some View {
+        GameView(controller: GameController())
+            .padding()
+    }
+}

Packages/TTTKit/Sources/TTTKit/UI/MarkView.swift

@@ -0,0 +1,39 @@
+//
+//  MarkView.swift
+//  TTTKit
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+struct MarkView: View {
+    let mark: Mark?
+    
+    var body: some View {
+        maybeImage.aspectRatio(1, contentMode: .fit)
+    }
+    
+    @ViewBuilder
+    private var maybeImage: some View {
+        if let mark {
+            Image(systemName: mark == .x ? "xmark" : "circle")
+                .resizable()
+                .fontWeight(mark == .x ? .regular : .semibold)
+        } else {
+            Color.clear
+        }
+    }
+}
+
+@available(iOS 16.0, *)
+struct MarkView_Previews: PreviewProvider {
+    static var previews: some View {
+        HStack {
+            MarkView(mark: .x)
+            MarkView(mark: .o)
+            MarkView(mark: nil)
+        }
+    }
+}

Packages/TTTKit/Sources/TTTKit/UI/Separator.swift

@@ -0,0 +1,39 @@
+//
+//  SwiftUIView.swift
+//  
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+struct Separator: View {
+    let axis: Axis
+    @Environment(\.separatorColor) private var separatorColor
+    
+    var body: some View {
+        rect
+            .foregroundColor(separatorColor)
+            .gridCellUnsizedAxes(axis == .vertical ? .vertical : .horizontal)
+    }
+    
+    private var rect: some View {
+        if axis == .vertical {
+            return Rectangle().frame(width: 1)
+        } else {
+            return Rectangle().frame(height: 1)
+        }
+    }
+}
+
+private struct SeparatorColorKey: EnvironmentKey {
+    static var defaultValue = Color.black
+}
+
+extension EnvironmentValues {
+    var separatorColor: Color {
+        get { self[SeparatorColorKey.self] }
+        set { self[SeparatorColorKey.self] = newValue }
+    }
+}

Packages/TTTKit/Sources/TTTKit/UI/SubBoardView.swift

@@ -0,0 +1,49 @@
+//
+//  SubBoardView.swift
+//  
+//
+//  Created by Shadowfacts on 12/21/22.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+struct SubBoardView: View {
+    let board: TicTacToeBoard
+    let cellTapped: ((_ column: Int, _ row: Int) -> Void)?
+    @State private var cellSize: CGFloat = 0
+    
+    init(board: TicTacToeBoard, cellTapped: ((Int, Int) -> Void)? = nil) {
+        self.board = board
+        self.cellTapped = cellTapped
+    }
+    
+    var body: some View {
+        BoardView(board: board, cellSize: $cellSize, spacing: 10) { column, row in
+            applyTapHandler(column, row, MarkView(mark: board[column, row])
+                .contentShape(Rectangle()))
+        }
+    }
+    
+    @ViewBuilder
+    private func applyTapHandler(_ column: Int, _ row: Int, _ view: some View) -> some View {
+        if let cellTapped {
+            view.onTapGesture {
+                cellTapped(column, row)
+            }
+        } else {
+            view
+        }
+    }
+}
+
+@available(iOS 16.0, *)
+struct SubBoardView_Previews: PreviewProvider {
+    static var previews: some View {
+        SubBoardView(board: TicTacToeBoard(marks: [
+            [ .x,   .o,  .x],
+            [nil,   .x,  .o],
+            [ .x,  nil, nil],
+        ]))
+    }
+}

Packages/TTTKit/Tests/TTTKitTests/TTTKitTests.swift

@@ -0,0 +1,7 @@
+import XCTest
+@testable import TTTKit
+
+final class TTTKitTests: XCTestCase {
+    func testExample() throws {
+    }
+}

Tusker.xcodeproj/project.pbxproj

@@ -144,6 +144,8 @@
 		D6538945214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6538944214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift */; };
 		D653F411267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D653F410267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift */; };
 		D6552367289870790048A653 /* ScreenCorners in Frameworks */ = {isa = PBXBuildFile; productRef = D6552366289870790048A653 /* ScreenCorners */; };
+		D659F35E2953A212002D944A /* TTTKit in Frameworks */ = {isa = PBXBuildFile; productRef = D659F35D2953A212002D944A /* TTTKit */; };
+		D659F36229541065002D944A /* TTTView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D659F36129541065002D944A /* TTTView.swift */; };
 		D65C6BF525478A9C00A6E89C /* BackgroundableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65C6BF425478A9C00A6E89C /* BackgroundableViewController.swift */; };
 		D65F613423AEAB6600F3CFD3 /* OnboardingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65F613323AEAB6600F3CFD3 /* OnboardingTests.swift */; };
 		D6620ACE2511A0ED00312CA0 /* StatusStateResolver.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6620ACD2511A0ED00312CA0 /* StatusStateResolver.swift */; };
@@ -190,6 +192,9 @@
 		D68A76E329524D2A001DA1B3 /* ListMO.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68A76E229524D2A001DA1B3 /* ListMO.swift */; };
 		D68A76E829527884001DA1B3 /* PinnedTimelinesView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68A76E729527884001DA1B3 /* PinnedTimelinesView.swift */; };
 		D68A76EA295285D0001DA1B3 /* AddHashtagPinnedTimelineView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68A76E9295285D0001DA1B3 /* AddHashtagPinnedTimelineView.swift */; };
+		D68A76EC295369A8001DA1B3 /* AboutView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68A76EB295369A8001DA1B3 /* AboutView.swift */; };
+		D68A76EE295369C7001DA1B3 /* AcknowledgementsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68A76ED295369C7001DA1B3 /* AcknowledgementsView.swift */; };
+		D68A76F129539116001DA1B3 /* FlipView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68A76F029539116001DA1B3 /* FlipView.swift */; };
 		D68ACE5D279B1ABA001CE8EB /* AssetPickerControlCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68ACE5C279B1ABA001CE8EB /* AssetPickerControlCollectionViewCell.swift */; };
 		D68C2AE325869BAB00548EFF /* AuxiliarySceneDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68C2AE225869BAB00548EFF /* AuxiliarySceneDelegate.swift */; };
 		D68E525B24A3D77E0054355A /* TuskerRootViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D68E525A24A3D77E0054355A /* TuskerRootViewController.swift */; };
@@ -519,6 +524,7 @@
 		D6531DEF246B867E000F9538 /* GifvAttachmentViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GifvAttachmentViewController.swift; sourceTree = "<group>"; };
 		D6538944214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TableViewSwipeActionProvider.swift; sourceTree = "<group>"; };
 		D653F410267D1E32004E32B1 /* DiffableTimelineLikeTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DiffableTimelineLikeTableViewController.swift; sourceTree = "<group>"; };
+		D659F36129541065002D944A /* TTTView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TTTView.swift; sourceTree = "<group>"; };
 		D65C6BF425478A9C00A6E89C /* BackgroundableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BackgroundableViewController.swift; sourceTree = "<group>"; };
 		D65F612D23AE990C00F3CFD3 /* Embassy.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = Embassy.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		D65F613023AE99E000F3CFD3 /* Ambassador.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = Ambassador.framework; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -568,6 +574,10 @@
 		D68A76E229524D2A001DA1B3 /* ListMO.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListMO.swift; sourceTree = "<group>"; };
 		D68A76E729527884001DA1B3 /* PinnedTimelinesView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PinnedTimelinesView.swift; sourceTree = "<group>"; };
 		D68A76E9295285D0001DA1B3 /* AddHashtagPinnedTimelineView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddHashtagPinnedTimelineView.swift; sourceTree = "<group>"; };
+		D68A76EB295369A8001DA1B3 /* AboutView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AboutView.swift; sourceTree = "<group>"; };
+		D68A76ED295369C7001DA1B3 /* AcknowledgementsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AcknowledgementsView.swift; sourceTree = "<group>"; };
+		D68A76F029539116001DA1B3 /* FlipView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FlipView.swift; sourceTree = "<group>"; };
+		D68A76F22953915C001DA1B3 /* TTTKit */ = {isa = PBXFileReference; lastKnownFileType = wrapper; name = TTTKit; path = Packages/TTTKit; sourceTree = "<group>"; };
 		D68ACE5C279B1ABA001CE8EB /* AssetPickerControlCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AssetPickerControlCollectionViewCell.swift; sourceTree = "<group>"; };
 		D68C2AE225869BAB00548EFF /* AuxiliarySceneDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuxiliarySceneDelegate.swift; sourceTree = "<group>"; };
 		D68E525A24A3D77E0054355A /* TuskerRootViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TuskerRootViewController.swift; sourceTree = "<group>"; };
@@ -730,6 +740,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				D674A50927F9128D00BA03AC /* Pachyderm in Frameworks */,
+				D659F35E2953A212002D944A /* TTTKit in Frameworks */,
 				D60CFFDB24A290BA00D00083 /* SwiftSoup in Frameworks */,
 				D6552367289870790048A653 /* ScreenCorners in Frameworks */,
 				D6676CA527A8D0020052936B /* WebURLFoundationExtras in Frameworks */,
@@ -1072,6 +1083,8 @@
 				D6BC9DB2232D4C07002CA326 /* WellnessPrefsView.swift */,
 				0427033922B31269000D31B6 /* AdvancedPrefsView.swift */,
 				D67895BF246870DE00D4CD9E /* LocalAccountAvatarView.swift */,
+				D68A76ED295369C7001DA1B3 /* AcknowledgementsView.swift */,
+				D68A76EF2953910A001DA1B3 /* About */,
 			);
 			path = Preferences;
 			sourceTree = "<group>";
@@ -1210,6 +1223,16 @@
 			path = "Account Detail";
 			sourceTree = "<group>";
 		};
+		D68A76EF2953910A001DA1B3 /* About */ = {
+			isa = PBXGroup;
+			children = (
+				D68A76EB295369A8001DA1B3 /* AboutView.swift */,
+				D68A76F029539116001DA1B3 /* FlipView.swift */,
+				D659F36129541065002D944A /* TTTView.swift */,
+			);
+			path = About;
+			sourceTree = "<group>";
+		};
 		D6A3BC822321F69400FD64D5 /* Account List */ = {
 			isa = PBXGroup;
 			children = (
@@ -1386,6 +1409,7 @@
 				D6D706A829498C82000827ED /* Tusker.xcconfig */,
 				D674A50727F910F300BA03AC /* Pachyderm */,
 				D6BEA243291A0C83002F4D01 /* Duckable */,
+				D68A76F22953915C001DA1B3 /* TTTKit */,
 				D6D4DDCE212518A000E1C4BB /* Tusker */,
 				D6D4DDE3212518A200E1C4BB /* TuskerTests */,
 				D6D4DDEE212518A200E1C4BB /* TuskerUITests */,
@@ -1582,6 +1606,7 @@
 				D6552366289870790048A653 /* ScreenCorners */,
 				D63CC701290EC0B8000E19DE /* Sentry */,
 				D6BEA244291A0EDE002F4D01 /* Duckable */,
+				D659F35D2953A212002D944A /* TTTKit */,
 			);
 			productName = Tusker;
 			productReference = D6D4DDCC212518A000E1C4BB /* Tusker.app */;
@@ -1908,6 +1933,7 @@
 				D6B053A623BD2D0C00A066FA /* AssetCollectionViewController.swift in Sources */,
 				D61A45E828DF477D002BE511 /* LoadingCollectionViewCell.swift in Sources */,
 				D67B506D250B291200FAECFB /* BlurHashDecode.swift in Sources */,
+				D68A76EC295369A8001DA1B3 /* AboutView.swift in Sources */,
 				D62275A024F1677200B82A16 /* ComposeHostingController.swift in Sources */,
 				04DACE8E212CC7CC009840C4 /* ImageCache.swift in Sources */,
 				D6BEA249291C6118002F4D01 /* DraftsView.swift in Sources */,
@@ -1944,6 +1970,7 @@
 				D6B053A223BD2C0600A066FA /* AssetPickerViewController.swift in Sources */,
 				D6EE63FB2551F7F60065485C /* StatusCollapseButton.swift in Sources */,
 				D6B936712829F72900237D0E /* NSManagedObjectContext+Helpers.swift in Sources */,
+				D68A76EE295369C7001DA1B3 /* AcknowledgementsView.swift in Sources */,
 				D627944A23A6AD6100D38C68 /* BookmarksTableViewController.swift in Sources */,
 				D63CC7102911F1E4000E19DE /* UIScrollView+Top.swift in Sources */,
 				D6F6A557291F4F1600F496A8 /* MuteAccountView.swift in Sources */,
@@ -1963,6 +1990,7 @@
 				D61F75BD293D099600C0B37F /* Lazy.swift in Sources */,
 				D6BED174212667E900F02DA0 /* TimelineStatusTableViewCell.swift in Sources */,
 				D69693F42585941A00F4E116 /* UIWindowSceneDelegate+Close.swift in Sources */,
+				D659F36229541065002D944A /* TTTView.swift in Sources */,
 				D6C143DA253510F4007DC240 /* ComposeEmojiTextField.swift in Sources */,
 				D6DD2A3F273C1F4900386A6C /* ComposeAttachmentImage.swift in Sources */,
 				D6DD2A45273D6C5700386A6C /* GIFImageView.swift in Sources */,
@@ -2031,6 +2059,7 @@
 				D65234E12561AA68001AF9CF /* NotificationsTableViewController.swift in Sources */,
 				D6A6C11525B62E9700298D0F /* CacheExpiry.swift in Sources */,
 				D67C57AF21E28EAD00C3118B /* Array+Uniques.swift in Sources */,
+				D68A76F129539116001DA1B3 /* FlipView.swift in Sources */,
 				D6945C3223AC4D36005C403C /* HashtagTimelineViewController.swift in Sources */,
 				D647D92824257BEB0005044F /* AttachmentPreviewViewController.swift in Sources */,
 				D61F75B5293BD97400C0B37F /* DeleteFilterService.swift in Sources */,
@@ -2755,6 +2784,10 @@
 			package = D6552365289870790048A653 /* XCRemoteSwiftPackageReference "ScreenCorners" */;
 			productName = ScreenCorners;
 		};
+		D659F35D2953A212002D944A /* TTTKit */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = TTTKit;
+		};
 		D6676CA427A8D0020052936B /* WebURLFoundationExtras */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = D6676CA127A8D0020052936B /* XCRemoteSwiftPackageReference "swift-url" */;

Tusker/API/InstanceFeatures.swift

@@ -93,6 +93,10 @@ struct InstanceFeatures {
         hasMastodonVersion(4, 0, 0)
     }
     
+    var notificationsAllowedTypes: Bool {
+        hasMastodonVersion(3, 5, 0)
+    }
+    
     mutating func update(instance: Instance, nodeInfo: NodeInfo?) {
         let ver = instance.version.lowercased()
         if ver.contains("glitch") {

Tusker/Assets.xcassets/AboutIcon.imageset/Contents.json

@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "256x256@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "256x256@3x.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Tusker/Scenes/ComposeSceneDelegate.swift

@@ -7,11 +7,14 @@
 //
 
 import UIKit
+import Combine
 
 class ComposeSceneDelegate: UIResponder, UIWindowSceneDelegate {
 
     var window: UIWindow?
     
+    private var cancellables = Set<AnyCancellable>()
+    
     func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
         guard let windowScene = scene as? UIWindowScene else {
             return
@@ -56,6 +59,11 @@ class ComposeSceneDelegate: UIResponder, UIWindowSceneDelegate {
         composeVC.delegate = self
         let nav = EnhancedNavigationViewController(rootViewController: composeVC)
         
+        updateTitle(draft: composeVC.draft)
+        composeVC.uiState.$draft
+            .sink { [unowned self] in self.updateTitle(draft: $0) }
+            .store(in: &cancellables)
+        
         window = UIWindow(windowScene: windowScene)
         window!.rootViewController = nav
         window!.makeKeyAndVisible()
@@ -78,6 +86,19 @@ class ComposeSceneDelegate: UIResponder, UIWindowSceneDelegate {
         return scene.userActivity
     }
     
+    private func updateTitle(draft: Draft) {
+        guard let scene = window?.windowScene,
+              let mastodonController = scene.session.mastodonController else {
+            return
+        }
+        if let inReplyToID = draft.inReplyToID,
+           let inReplyTo = mastodonController.persistentContainer.status(for: inReplyToID) {
+            scene.title = "Reply to @\(inReplyTo.account.acct)"
+        } else {
+            scene.title = "New Post"
+        }
+    }
+    
     @objc private func themePrefChanged() {
         window?.overrideUserInterfaceStyle = Preferences.shared.theme
     }

Tusker/Scenes/MainSceneDelegate.swift

@@ -185,6 +185,15 @@ class MainSceneDelegate: UIResponder, UIWindowSceneDelegate, TuskerSceneDelegate
         LocalData.shared.setMostRecentAccount(account)
         window!.windowScene!.session.mastodonController = MastodonController.getForAccount(account)
         
+        // iPadOS shows the title below the App Name
+        // macOS uses the title as the window title, but uses the subtitle in addition to the default window title (the app name)
+        // so this way we get basically the same behavior on both
+        if ProcessInfo.processInfo.isiOSAppOnMac || ProcessInfo.processInfo.isMacCatalystApp {
+            window!.windowScene!.subtitle = account.instanceURL.host!
+        } else {
+            window!.windowScene!.title = account.instanceURL.host!
+        }
+        
         let newRoot = createAppUI()
         if let container = window?.rootViewController as? AccountSwitchingContainerViewController {
             let direction: AccountSwitchingContainerViewController.AnimationDirection

Tusker/Screens/Compose/ComposeAttachmentsList.swift

@@ -42,7 +42,7 @@ struct ComposeAttachmentsList: View {
                 Label("Add photo or video", systemImage: addButtonImageName)
             }
             .disabled(!canAddAttachment)
-            .foregroundColor(.blue)
+            .foregroundColor(.accentColor)
             .frame(height: cellHeight / 2)
             .sheetOrPopover(isPresented: $isShowingAssetPickerPopover, content: self.assetPickerPopover)
             .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
@@ -51,7 +51,7 @@ struct ComposeAttachmentsList: View {
                 Label("Draw something", systemImage: "hand.draw")
             }
             .disabled(!canAddAttachment)
-            .foregroundColor(.blue)
+            .foregroundColor(.accentColor)
             .frame(height: cellHeight / 2)
             .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
             
@@ -59,7 +59,7 @@ struct ComposeAttachmentsList: View {
                 Label(draft.poll == nil ? "Add a poll" : "Remove poll", systemImage: "chart.bar.doc.horizontal")
             }
             .disabled(!canAddPoll)
-            .foregroundColor(.blue)
+            .foregroundColor(.accentColor)
             .frame(height: cellHeight / 2)
             .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
         }

Tusker/Screens/Notifications/NotificationsTableViewController.swift

@@ -57,6 +57,16 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
         tableView.register(UINib(nibName: "BasicTableViewCell", bundle: .main), forCellReuseIdentifier: unknownCell)
     }
     
+    private func request(range: RequestRange) -> Request<[Pachyderm.Notification]> {
+        if mastodonController.instanceFeatures.notificationsAllowedTypes {
+            return Client.getNotifications(allowedTypes: allowedTypes, range: range)
+        } else {
+            var types = Set(Notification.Kind.allCases)
+            allowedTypes.forEach { types.remove($0) }
+            return Client.getNotifications(excludedTypes: Array(types), range: range)
+        }
+    }
+    
     // MARK: - DiffableTimelineLikeTableViewController
     
     override func cellProvider(_ tableView: UITableView, _ indexPath: IndexPath, _ item: Item) -> UITableViewCell? {
@@ -140,8 +150,7 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
     }
     
     override func loadInitialItems(completion: @escaping (LoadResult) -> Void) {
-        let request = Client.getNotifications(allowedTypes: allowedTypes)
-        mastodonController.run(request) { (response) in
+        mastodonController.run(request(range: .default)) { (response) in
             switch response {
             case let .failure(error):
                 completion(.failure(.client(error)))
@@ -171,8 +180,7 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
             return
         }
         
-        let request = Client.getNotifications(allowedTypes: allowedTypes, range: older)
-        mastodonController.run(request) { (response) in
+        mastodonController.run(request(range: older)) { (response) in
             switch response {
             case let .failure(error):
                 completion(.failure(.client(error)))
@@ -203,8 +211,7 @@ class NotificationsTableViewController: DiffableTimelineLikeTableViewController<
             return
         }
         
-        let request = Client.getNotifications(allowedTypes: allowedTypes, range: newer)
-        mastodonController.run(request) { (response) in
+        mastodonController.run(request(range: newer)) { (response) in
             switch response {
             case let .failure(error):
                 completion(.failure(.client(error)))

Tusker/Screens/Preferences/About/AboutView.swift

@@ -0,0 +1,92 @@
+//
+//  AboutView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 12/21/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+
+struct AboutView: View {
+    private var version: String {
+        let marketing = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String
+        let build = Bundle.main.infoDictionary?["CFBundleVersion"] as? String
+        return "\(marketing ?? "<unknown>") (\(build ?? "<unknown>"))"
+    }
+    
+    var body: some View {
+        List {
+            iconOrGame
+                .frame(maxWidth: .infinity, alignment: .center)
+                .listRowInsets(EdgeInsets(top: 9, leading: 0, bottom: 0, trailing: 0))
+                .listRowBackground(EmptyView())
+            
+            Section {
+                HStack {
+                    Text("Version")
+                    Spacer()
+                    Text(version)
+                        .foregroundColor(.secondary)
+                }
+                .contextMenu {
+                    Button {
+                        UIPasteboard.general.string = version
+                    } label: {
+                        Label("Copy", systemImage: "doc.on.doc")
+                    }
+                }
+            }
+            
+            Section {
+                Link("Website", destination: URL(string: "https://vaccor.space/tusker")!)
+                Link("Source Code", destination: URL(string: "https://git.shadowfacts.net/shadowfacts/Tusker")!)
+                Link("Issue Tracker", destination: URL(string: "https://git.shadowfacts.net/shadowfacts/Tusker/issues")!)
+            }
+        }
+    }
+    
+    @ViewBuilder
+    private var iconOrGame: some View {
+        if #available(iOS 16.0, *) {
+            FlipView {
+                appIcon
+            } back: {
+                TTTView()
+            }
+        } else {
+            appIcon
+        }
+    }
+    
+    private var appIcon: some View {
+        VStack {
+            AppIconView()
+                .shadow(radius: 6, y: 3)
+                .frame(width: 256, height: 256)
+            
+            Text("Tusker")
+                .font(.title2.bold())
+        }
+    }
+}
+
+struct AppIconView: UIViewRepresentable {
+    func makeUIView(context: Context) -> UIImageView {
+        let view = UIImageView(image: UIImage(named: "AboutIcon"))
+        view.contentMode = .scaleAspectFit
+        view.layer.cornerRadius = 256 / 6.4
+        view.layer.cornerCurve = .continuous
+        view.layer.masksToBounds = true
+        return view
+    }
+    
+    func updateUIView(_ uiView: UIImageView, context: Context) {
+    }
+}
+
+struct AboutView_Previews: PreviewProvider {
+    static var previews: some View {
+        AboutView()
+    }
+}

Tusker/Screens/Preferences/About/FlipView.swift

@@ -0,0 +1,116 @@
+//
+//  FlipView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 12/21/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+
+// Based on https://stackoverflow.com/a/60807269
+struct FlipView<Front: View, Back: View> : View {
+    private let front: Front
+    private let back: Back
+    
+    @State private var flipped = false
+    @State private var angle: Angle = .zero
+    @State private var width: CGFloat = 0
+    @State private var initialFlipped: Bool!
+    
+    init(@ViewBuilder front: () -> Front, @ViewBuilder back: () -> Back) {
+        self.front = front()
+        self.back = back()
+    }
+    
+    var body: some View {
+        ZStack {
+            front
+                .opacity(flipped ? 0.0 : 1.0)
+            back
+                .rotation3DEffect(.degrees(180), axis: (0, 1, 0))
+                .opacity(flipped ? 1.0 : 0.0)
+        }
+        .modifier(FlipEffect(flipped: $flipped, angle: angle.degrees, axis: (x: 0, y: 1)))
+        .background(GeometryReader { proxy in
+            Color.clear
+                .preference(key: WidthPrefKey.self, value: proxy.size.width)
+                .onPreferenceChange(WidthPrefKey.self) { newValue in
+                    width = newValue
+                }
+        })
+        .gesture(
+            DragGesture()
+                .onChanged({ value in
+                    if initialFlipped == nil {
+                        initialFlipped = flipped
+                    }
+                    let adj = (width / 2) - value.location.x
+                    let hyp = abs((width / 2) - value.startLocation.x)
+                    let clamped: Double = min(max(adj / hyp, -1), 1)
+                    let startedOnRight = value.startLocation.x > width / 2
+                    angle = .radians(acos(clamped) + (startedOnRight != initialFlipped ? .pi : 0))
+                })
+                .onEnded({ value in
+                    initialFlipped = nil
+                    let deg = angle.degrees.truncatingRemainder(dividingBy: 360)
+                    if deg == 0 {
+                        angle = .zero
+                    } else if deg == 180 {
+                        angle = .degrees(180)
+                    } else {
+                        withAnimation(.easeInOut(duration: 0.25)) {
+                            angle = deg > 90 && deg < 270 ? .degrees(180) : .zero
+                        }
+                    }
+                })
+        )
+        .onTapGesture {
+            withAnimation(.easeInOut(duration: 0.5)) {
+                angle = angle == .zero ? .degrees(180) : .zero
+            }
+        }
+    }
+}
+
+// Based on https://swiftui-lab.com/swiftui-animations-part2/
+struct FlipEffect: GeometryEffect {
+    var animatableData: Double {
+        get { angle }
+        set { angle = newValue }
+    }
+    
+    @Binding var flipped: Bool
+    var angle: Double
+    let axis: (x: CGFloat, y: CGFloat)
+    
+    func effectValue(size: CGSize) -> ProjectionTransform {
+        // We schedule the change to be done after the view has finished drawing,
+        // otherwise, we would receive a runtime error, indicating we are changing
+        // the state while the view is being drawn.
+        DispatchQueue.main.async {
+            self.flipped = self.angle >= 90 && self.angle < 270
+        }
+        
+        let a = CGFloat(Angle.degrees(angle).radians)
+        
+        var transform3d = CATransform3DIdentity
+        transform3d.m34 = -1/max(size.width, size.height)
+        
+        transform3d = CATransform3DRotate(transform3d, a, axis.x, axis.y, 0)
+        transform3d = CATransform3DTranslate(transform3d, -size.width/2.0, -size.height/2.0, 0)
+        
+        let affineTransform = ProjectionTransform(CGAffineTransform(translationX: size.width/2.0, y: size.height / 2.0))
+        
+        return ProjectionTransform(transform3d).concatenating(affineTransform)
+    }
+}
+
+private struct WidthPrefKey: PreferenceKey {
+    static var defaultValue: CGFloat = 0
+    
+    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
+        value = nextValue()
+    }
+}
+

Tusker/Screens/Preferences/About/TTTView.swift

@@ -0,0 +1,63 @@
+//
+//  TTTView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 12/21/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+import TTTKit
+import GameKit
+import OSLog
+
+@available(iOS 16.0, *)
+struct TTTView: View {
+    static let aiQueue = DispatchQueue(label: "TTT AI Strategist", qos: .userInitiated)
+    
+    @StateObject private var controller = GameController()
+    @State private var isAIThinking = false
+    @State private var strategist = {
+        let strategist = GKMinmaxStrategist()
+        strategist.maxLookAheadDepth = 5
+        return strategist
+    }()
+    
+    var body: some View {
+        VStack(alignment: .center) {
+            GameView(controller: controller)
+                .frame(width: 256, height: 256)
+            
+            if isAIThinking {
+                ProgressView()
+                    .progressViewStyle(.circular)
+            } else {
+                Text(controller.state.displayName)
+            }
+        }
+        .onReceive(controller.$state) { newState in
+            switch newState {
+            case .playAnywhere(.o), .playSpecific(.o, column: _, row: _):
+                isAIThinking = true
+                TTTView.aiQueue.async {
+                    let gameModel = GameModel(controller: controller)
+                    strategist.gameModel = gameModel
+                    let move = strategist.bestMoveForActivePlayer()!
+                    DispatchQueue.main.async {
+                        gameModel.apply(move)
+                        isAIThinking = false
+                    }
+                }
+            default:
+                break
+            }
+        }
+    }
+}
+
+@available(iOS 16.0, *)
+struct TTTView_Previews: PreviewProvider {
+    static var previews: some View {
+        TTTView()
+    }
+}

Tusker/Screens/Preferences/AcknowledgementsView.swift

@@ -0,0 +1,301 @@
+//
+//  AcknowledgementsView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 12/21/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+
+struct AcknowledgementsView: View {
+    var body: some View {
+        ScrollView(.vertical) {
+            Text(text)
+                .padding(.horizontal, 16)
+        }
+        .navigationTitle("Acknowledgements")
+    }
+    
+    private var text: AttributedString {
+        var attrStr = try! AttributedString(markdown: """
+^[[BlurHash](https://github.com/woltapp/blurhash)](headingLevel: 2)
+Copyright (c) 2018 Wolt Enterprises
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+^[[SwiftSoup](https://github.com/scinfu/swiftsoup)](headingLevel: 2)
+Copyright (c) 2016 Nabil Chatbi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+Symbols
+Symbol outline not available for this file
+To inspect a symbol, try clicking on the symbol directly in the code view.
+Code navigation supports a limited number of languages. See which languages are supported.
+
+^[[swift-url](https://github.com/karwa/swift-url)](headingLevel: 2)
+
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+  "License" shall mean the terms and conditions for use, reproduction,
+  and distribution as defined by Sections 1 through 9 of this document.
+
+  "Licensor" shall mean the copyright owner or entity authorized by
+  the copyright owner that is granting the License.
+
+  "Legal Entity" shall mean the union of the acting entity and all
+  other entities that control, are controlled by, or are under common
+  control with that entity. For the purposes of this definition,
+  "control" means (i) the power, direct or indirect, to cause the
+  direction or management of such entity, whether by contract or
+  otherwise, or (ii) ownership of fifty percent (50%) or more of the
+  outstanding shares, or (iii) beneficial ownership of such entity.
+
+  "You" (or "Your") shall mean an individual or Legal Entity
+  exercising permissions granted by this License.
+
+  "Source" form shall mean the preferred form for making modifications,
+  including but not limited to software source code, documentation
+  source, and configuration files.
+
+  "Object" form shall mean any form resulting from mechanical
+  transformation or translation of a Source form, including but
+  not limited to compiled object code, generated documentation,
+  and conversions to other media types.
+
+  "Work" shall mean the work of authorship, whether in Source or
+  Object form, made available under the License, as indicated by a
+  copyright notice that is included in or attached to the work
+  (an example is provided in the Appendix below).
+
+  "Derivative Works" shall mean any work, whether in Source or Object
+  form, that is based on (or derived from) the Work and for which the
+  editorial revisions, annotations, elaborations, or other modifications
+  represent, as a whole, an original work of authorship. For the purposes
+  of this License, Derivative Works shall not include works that remain
+  separable from, or merely link (or bind by name) to the interfaces of,
+  the Work and Derivative Works thereof.
+
+  "Contribution" shall mean any work of authorship, including
+  the original version of the Work and any modifications or additions
+  to that Work or Derivative Works thereof, that is intentionally
+  submitted to Licensor for inclusion in the Work by the copyright owner
+  or by an individual or Legal Entity authorized to submit on behalf of
+  the copyright owner. For the purposes of this definition, "submitted"
+  means any form of electronic, verbal, or written communication sent
+  to the Licensor or its representatives, including but not limited to
+  communication on electronic mailing lists, source code control systems,
+  and issue tracking systems that are managed by, or on behalf of, the
+  Licensor for the purpose of discussing and improving the Work, but
+  excluding communication that is conspicuously marked or otherwise
+  designated in writing by the copyright owner as "Not a Contribution."
+
+  "Contributor" shall mean Licensor and any individual or Legal Entity
+  on behalf of whom a Contribution has been received by Licensor and
+  subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+  this License, each Contributor hereby grants to You a perpetual,
+  worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+  copyright license to reproduce, prepare Derivative Works of,
+  publicly display, publicly perform, sublicense, and distribute the
+  Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+  this License, each Contributor hereby grants to You a perpetual,
+  worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+  (except as stated in this section) patent license to make, have made,
+  use, offer to sell, sell, import, and otherwise transfer the Work,
+  where such license applies only to those patent claims licensable
+  by such Contributor that are necessarily infringed by their
+  Contribution(s) alone or by combination of their Contribution(s)
+  with the Work to which such Contribution(s) was submitted. If You
+  institute patent litigation against any entity (including a
+  cross-claim or counterclaim in a lawsuit) alleging that the Work
+  or a Contribution incorporated within the Work constitutes direct
+  or contributory patent infringement, then any patent licenses
+  granted to You under this License for that Work shall terminate
+  as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+  Work or Derivative Works thereof in any medium, with or without
+  modifications, and in Source or Object form, provided that You
+  meet the following conditions:
+
+  (a) You must give any other recipients of the Work or
+      Derivative Works a copy of this License; and
+
+  (b) You must cause any modified files to carry prominent notices
+      stating that You changed the files; and
+
+  (c) You must retain, in the Source form of any Derivative Works
+      that You distribute, all copyright, patent, trademark, and
+      attribution notices from the Source form of the Work,
+      excluding those notices that do not pertain to any part of
+      the Derivative Works; and
+
+  (d) If the Work includes a "NOTICE" text file as part of its
+      distribution, then any Derivative Works that You distribute must
+      include a readable copy of the attribution notices contained
+      within such NOTICE file, excluding those notices that do not
+      pertain to any part of the Derivative Works, in at least one
+      of the following places: within a NOTICE text file distributed
+      as part of the Derivative Works; within the Source form or
+      documentation, if provided along with the Derivative Works; or,
+      within a display generated by the Derivative Works, if and
+      wherever such third-party notices normally appear. The contents
+      of the NOTICE file are for informational purposes only and
+      do not modify the License. You may add Your own attribution
+      notices within Derivative Works that You distribute, alongside
+      or as an addendum to the NOTICE text from the Work, provided
+      that such additional attribution notices cannot be construed
+      as modifying the License.
+
+  You may add Your own copyright statement to Your modifications and
+  may provide additional or different license terms and conditions
+  for use, reproduction, or distribution of Your modifications, or
+  for any such Derivative Works as a whole, provided Your use,
+  reproduction, and distribution of the Work otherwise complies with
+  the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+  any Contribution intentionally submitted for inclusion in the Work
+  by You to the Licensor shall be under the terms and conditions of
+  this License, without any additional terms or conditions.
+  Notwithstanding the above, nothing herein shall supersede or modify
+  the terms of any separate license agreement you may have executed
+  with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+  names, trademarks, service marks, or product names of the Licensor,
+  except as required for reasonable and customary use in describing the
+  origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+  agreed to in writing, Licensor provides the Work (and each
+  Contributor provides its Contributions) on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied, including, without limitation, any warranties or conditions
+  of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+  PARTICULAR PURPOSE. You are solely responsible for determining the
+  appropriateness of using or redistributing the Work and assume any
+  risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+  whether in tort (including negligence), contract, or otherwise,
+  unless required by applicable law (such as deliberate and grossly
+  negligent acts) or agreed to in writing, shall any Contributor be
+  liable to You for damages, including any direct, indirect, special,
+  incidental, or consequential damages of any character arising as a
+  result of this License or out of the use or inability to use the
+  Work (including but not limited to damages for loss of goodwill,
+  work stoppage, computer failure or malfunction, or any and all
+  other commercial damages or losses), even if such Contributor
+  has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+  the Work or Derivative Works thereof, You may choose to offer,
+  and charge a fee for, acceptance of support, warranty, indemnity,
+  or other liability obligations and/or rights consistent with this
+  License. However, in accepting such obligations, You may act only
+  on Your own behalf and on Your sole responsibility, not on behalf
+  of any other Contributor, and only if You agree to indemnify,
+  defend, and hold each Contributor harmless for any liability
+  incurred by, or claims asserted against, such Contributor by reason
+  of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+^[[ScreenCorners](https://github.com/kylebshr/screencorners)](headingLevel: 2)
+
+Copyright (c) 2020 Kyle Bashour
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+^[[Sentry](https://github.com/getsentry/sentry-cocoa)](headingLevel: 2)
+
+Copyright (c) 2015 Sentry
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+""", including: AttributeScopes.HeadingAttributes.self, options: .init(allowsExtendedAttributes: true, interpretedSyntax: .inlineOnlyPreservingWhitespace))
+        
+        for (level, range) in attrStr.runs[\.headingLevel].reversed() {
+            guard let level else { continue }
+            attrStr[range].font = .system(level == 1 ? .title : level == 2 ? .title2 : level == 3 ? .title3 : .body).bold()
+        }
+        
+        return attrStr
+    }
+}
+
+private extension AttributeScopes {
+    struct HeadingAttributes: AttributeScope {
+        let headingLevel: HeadingLevelAttributes
+    }
+
+    var headingAttributes: HeadingAttributes.Type  { HeadingAttributes.self }
+}
+
+private enum HeadingLevelAttributes: CodableAttributedStringKey, MarkdownDecodableAttributedStringKey {
+    public typealias Value = Int
+
+    public static var name = "headingLevel"
+}
+
+private extension AttributeDynamicLookup {
+    subscript<T: AttributedStringKey>(dynamicMember keyPath: KeyPath<AttributeScopes.HeadingAttributes, T>) -> T {
+        return self[T.self]
+    }
+}
+
+struct AcknowledgementsView_Previews: PreviewProvider {
+    static var previews: some View {
+        AcknowledgementsView()
+    }
+}

Tusker/Screens/Preferences/PreferencesView.swift

@@ -6,6 +6,7 @@
 //
 
 import SwiftUI
+import TTTKit
 
 struct PreferencesView: View {
     let mastodonController: MastodonController
@@ -96,6 +97,15 @@ struct PreferencesView: View {
                         Text("Advanced")
                     }
                 }
+                
+                Section {
+                    NavigationLink("About") {
+                        AboutView()
+                    }
+                    NavigationLink("Acknowledgements") {
+                        AcknowledgementsView()
+                    }
+                }
             }
             .listStyle(InsetGroupedListStyle())
             .navigationBarTitle(Text("Preferences"), displayMode: .inline)