Add app settings tab

HackerTube/ContentView.swift

@@ -27,6 +27,10 @@ struct ContentView: View {
                 ConferencesView()
             }
 
+            Tab("Settings", systemImage: "gear") {
+                SettingsView()
+            }
+
             Tab("Search", systemImage: "magnifyingglass", role: .search) {
                 SearchView()
             }

HackerTube/Domain/UserDefaultsKey.swift

@@ -8,5 +8,18 @@
 import Foundation
 
 enum UserDefaultsKey: String {
-    case playbackRate = "playbackRate"
+    case playbackRate
+    case lowDataModeEnabled
+}
+
+extension UserDefaults {
+    @objc dynamic var playbackRate: Float {
+        get { float(forKey: UserDefaultsKey.playbackRate.rawValue) }
+        set { setValue(newValue, forKey: UserDefaultsKey.playbackRate.rawValue) }
+    }
+
+    @objc dynamic var lowDataModeEnabled: Bool {
+        get { bool(forKey: UserDefaultsKey.lowDataModeEnabled.rawValue) }
+        set { setValue(newValue, forKey: UserDefaultsKey.lowDataModeEnabled.rawValue) }
+    }
 }

HackerTube/Features/Settings/SettingsView.swift

@@ -0,0 +1,49 @@
+//
+//  SettingsView.swift
+//  HackerTube
+//
+//  Created by Mathijs Bernson on 02/03/2026.
+//
+
+import SwiftUI
+import AVKit
+
+enum RecordingQuality: String {
+    case hd, sd
+}
+
+struct SettingsView: View {
+    @AppStorage(UserDefaultsKey.lowDataModeEnabled.rawValue)
+    var lowDataModeEnabled = false
+
+    @AppStorage(UserDefaultsKey.playbackRate.rawValue)
+    var playbackRate: Double = 1.0
+    let playbackRates: [Double] = AVPlaybackSpeed.systemDefaultSpeeds.map(\.rate).map(Double.init)
+
+    var body: some View {
+        NavigationStack {
+            List {
+                Section("Playback") {
+                    Picker("Playback speed", selection: $playbackRate) {
+                        ForEach(playbackRates, id: \.self) { playbackRate in
+                            Text("\(playbackRate, format: .number) ×", comment: "Playback rate").tag(playbackRate)
+                        }
+                    }
+                }
+
+                Section {
+                    Toggle("Low data mode", isOn: $lowDataModeEnabled)
+                } header: {
+                    Text("Streaming")
+                } footer: {
+                    Text("When low data mode is on, HackerTube will play standard definition (SD) video instead of HD when possible.")
+                }
+            }
+            .navigationTitle("Settings")
+        }
+    }
+}
+
+#Preview {
+    SettingsView()
+}

HackerTube/Features/VideoPlayer/VideoPlayerView.swift

@@ -6,6 +6,7 @@
 //
 
 import AVKit
+import Combine
 import SwiftUI
 import os.log
 
@@ -59,15 +60,27 @@ class VideoPlayerCoordinator: NSObject, AVPlayerViewControllerDelegate {
 
 class VideoPlayerViewController: AVPlayerViewController {
     private var selectedSpeedObserver: NSKeyValueObservation?
+    private var cancelable: AnyCancellable?
 
     override func viewDidLoad() {
         super.viewDidLoad()
 
+        let userDefaults = UserDefaults.standard
+
         selectedSpeedObserver = self.observe(\.selectedSpeed, options: [.new]) { controller, change in
             if let selectedSpeed = change.newValue.flatMap({ $0 }) {
-                UserDefaults.standard.set(selectedSpeed.rate, forKey: UserDefaultsKey.playbackRate.rawValue)
+                userDefaults.set(selectedSpeed.rate, forKey: UserDefaultsKey.playbackRate.rawValue)
             }
         }
+
+        cancelable = userDefaults.publisher(for: \.playbackRate)
+            .sink(receiveValue: { [weak self] newValue in
+                guard let player = self?.player else { return }
+
+                if newValue != player.rate {
+                    player.rate = newValue
+                }
+            })
     }
 
     override func viewDidAppear(_ animated: Bool) {

HackerTube/HackerTubeAppDelegate.swift

@@ -16,6 +16,7 @@ class HackerTubeAppDelegate: NSObject, UIApplicationDelegate {
     private func registerDefaultSettings() {
         UserDefaults.standard.register(defaults: [
             UserDefaultsKey.playbackRate.rawValue : 1.0 as Float,
+            UserDefaultsKey.lowDataModeEnabled.rawValue : false,
         ])
     }
 }

HackerTube/Localizable.xcstrings

@@ -1,6 +1,10 @@
 {
   "sourceLanguage" : "en",
   "strings" : {
+    "%@ ×" : {
+      "comment" : "Playback rate",
+      "shouldTranslate" : false
+    },
     "%lld views" : {
       "comment" : "A label displaying the number of views for a talk.",
       "localizations" : {
@@ -147,6 +151,10 @@
         }
       }
     },
+    "Low data mode" : {
+      "comment" : "A toggle switch that allows the user to enable or disable low data mode.",
+      "isCommentAutoGenerated" : true
+    },
     "No copyright information encoded in video. Please refer to the website of the organizer of %@ at: %@" : {
       "comment" : "A label that is shown when no copyright information is available for a talk.",
       "localizations" : {
@@ -199,6 +207,30 @@
         }
       }
     },
+    "Playback" : {
+      "comment" : "A section header in the settings view related to playback preferences.",
+      "isCommentAutoGenerated" : true,
+      "localizations" : {
+        "nl" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Afspelen"
+          }
+        }
+      }
+    },
+    "Playback speed" : {
+      "comment" : "A picker for selecting the playback speed of video in the settings view.",
+      "isCommentAutoGenerated" : true,
+      "localizations" : {
+        "nl" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Afspeelsnelheid"
+          }
+        }
+      }
+    },
     "Popular" : {
       "comment" : "Heading for the popular talks view and tab.",
       "localizations" : {
@@ -285,6 +317,26 @@
         }
       }
     },
+    "Settings" : {
+      "comment" : "The title of the settings tab in the main view.",
+      "isCommentAutoGenerated" : true,
+      "localizations" : {
+        "nl" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Instellingen"
+          }
+        }
+      }
+    },
+    "Streaming" : {
+      "comment" : "A heading for the streaming settings.",
+      "isCommentAutoGenerated" : true
+    },
+    "When low data mode is on, HackerTube will play standard definition (SD) video instead of HD when possible." : {
+      "comment" : "A footer text in the settings view that explains the functionality of low data mode.",
+      "isCommentAutoGenerated" : true
+    },
     "Year" : {
       "comment" : "A label that indicates the year to filter talks by.",
       "isCommentAutoGenerated" : true,
@@ -304,5 +356,5 @@
       }
     }
   },
-  "version" : "1.0"
+  "version" : "1.1"
 }