From 1b38489d0f90716d536069893701622ca4d19835 Mon Sep 17 00:00:00 2001
From: Mathijs Bernson <mathijs.bernson@gmail.com>
Date: Mon, 11 Aug 2025 13:25:48 +0200
Subject: [PATCH] Remember the last set playback speed

Fixes #25
---
 HackerTube/Domain/UserDefaultsKey.swift       | 12 +++++++++++
 .../Features/Talk/TalkPlayerViewModel.swift   |  2 ++
 .../VideoPlayer/VideoPlayerView.swift         | 12 +++++++++++
 HackerTube/HackerTubeApp.swift                |  2 ++
 HackerTube/HackerTubeAppDelegate.swift        | 21 +++++++++++++++++++
 5 files changed, 49 insertions(+)
 create mode 100644 HackerTube/Domain/UserDefaultsKey.swift
 create mode 100644 HackerTube/HackerTubeAppDelegate.swift

diff --git a/HackerTube/Domain/UserDefaultsKey.swift b/HackerTube/Domain/UserDefaultsKey.swift
new file mode 100644
index 0000000..9429a3f
--- /dev/null
+++ b/HackerTube/Domain/UserDefaultsKey.swift
@@ -0,0 +1,12 @@
+//
+//  UserDefaultsKey.swift
+//  HackerTube
+//
+//  Created by Mathijs Bernson on 11/08/2025.
+//
+
+import Foundation
+
+enum UserDefaultsKey: String {
+    case playbackRate = "playbackRate"
+}
diff --git a/HackerTube/Features/Talk/TalkPlayerViewModel.swift b/HackerTube/Features/Talk/TalkPlayerViewModel.swift
index b08ada4..6858ba4 100644
--- a/HackerTube/Features/Talk/TalkPlayerViewModel.swift
+++ b/HackerTube/Features/Talk/TalkPlayerViewModel.swift
@@ -22,6 +22,8 @@ final class TalkPlayerViewModel {
         subsystem: Bundle.main.bundleIdentifier!, category: "TalkPlayerViewModel")
 
     func prepareForPlayback(recording: Recording, talk: Talk) async {
+        player.defaultRate = UserDefaults.standard.float(forKey: UserDefaultsKey.playbackRate.rawValue)
+
         let playerItem = AVPlayerItem(url: recording.recordingURL)
         playerItem.externalMetadata = factory.createMetadataItems(for: recording, talk: talk)
 
diff --git a/HackerTube/Features/VideoPlayer/VideoPlayerView.swift b/HackerTube/Features/VideoPlayer/VideoPlayerView.swift
index 531eef4..99607c3 100644
--- a/HackerTube/Features/VideoPlayer/VideoPlayerView.swift
+++ b/HackerTube/Features/VideoPlayer/VideoPlayerView.swift
@@ -58,6 +58,18 @@ class VideoPlayerCoordinator: NSObject, AVPlayerViewControllerDelegate {
 }
 
 class VideoPlayerViewController: AVPlayerViewController {
+    private var selectedSpeedObserver: NSKeyValueObservation?
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        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)
+            }
+        }
+    }
+
     override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
 
diff --git a/HackerTube/HackerTubeApp.swift b/HackerTube/HackerTubeApp.swift
index 55e7f64..7ef7206 100644
--- a/HackerTube/HackerTubeApp.swift
+++ b/HackerTube/HackerTubeApp.swift
@@ -11,6 +11,8 @@ import CCCApi
 
 @main
 struct HackerTubeApp: App {
+    @UIApplicationDelegateAdaptor var appDelegate: HackerTubeAppDelegate
+
     var body: some Scene {
         WindowGroup {
             ContentView()
diff --git a/HackerTube/HackerTubeAppDelegate.swift b/HackerTube/HackerTubeAppDelegate.swift
new file mode 100644
index 0000000..31ee762
--- /dev/null
+++ b/HackerTube/HackerTubeAppDelegate.swift
@@ -0,0 +1,21 @@
+//
+//  HackerTubeAppDelegate.swift
+//  HackerTube
+//
+//  Created by Mathijs Bernson on 11/08/2025.
+//
+
+import UIKit
+
+class HackerTubeAppDelegate: NSObject, UIApplicationDelegate {
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
+        registerDefaultSettings()
+        return true
+    }
+
+    private func registerDefaultSettings() {
+        UserDefaults.standard.register(defaults: [
+            UserDefaultsKey.playbackRate.rawValue : 1.0 as Float,
+        ])
+    }
+}