voice-cat/clients/apple/VoiceCat.iOS/SettingsController.cs

using AVFoundation;
using AVKit;
using ReplayKit;
using UIKit;
using VoiceCat.Audio;
using Voicecat.V1;

namespace VoiceCat.iOS;

internal sealed class SettingsController : UITableViewController
{
    private readonly AppModel model; private readonly ListRefresher refresher;
    internal SettingsController(AppModel model) : base(UITableViewStyle.InsetGrouped)
    {
        this.model = model; Title = "Settings";
        refresher = new(this, Signature,
            handler => { model.Changed += handler; IosAudioRouter.Shared.Changed += handler; },
            handler => { model.Changed -= handler; IosAudioRouter.Shared.Changed -= handler; });
    }
    public override void ViewDidLoad() { base.ViewDidLoad(); TableView.RegisterClassForCellReuse(typeof(UITableViewCell), "setting"); }
    public override void ViewWillAppear(bool animated) { base.ViewWillAppear(animated); refresher.Start(); }
    public override void ViewDidDisappear(bool animated) { refresher.Stop(); base.ViewDidDisappear(animated); }
    private string Signature() =>
        $"{IosAudioRouter.Shared.Preset}|{IosAudioRouter.Shared.ForceSpeaker}|{model.Settings.AudioBufferMilliseconds}|{model.ScreenSharing}|" +
        $"{model.Settings.InputMode}|{model.Settings.VadThreshold}|{model.Settings.InputGain}|{model.Settings.InputNoiseReduction}|" +
        $"{model.Settings.EventSounds}|{model.Settings.EventVolume}|{model.Settings.SpokenEvents}|{model.Settings.SelfTalkSounds}|{model.Settings.PushToTalkSound}|" +
        $"{model.Client?.Permissions is { } p && (p.IsAdmin || p.CanAdminAccounts)}";
    public override nint NumberOfSections(UITableView tableView) => 5;
    public override nint RowsInSection(UITableView tableView, nint section) => section switch { 0 => 5, 1 => 4, 2 => 5, 3 => model.Client?.Permissions is { } p && (p.IsAdmin || p.CanAdminAccounts) ? 1 : 0, _ => 2 };
    public override string? TitleForHeader(UITableView tableView, nint section) => section switch { 0 => "Audio", 1 => "Voice", 2 => "Notifications", 3 => "Administration", _ => "Server" };
    public override UITableViewCell GetCell(UITableView tableView, NSIndexPath path)
    {
        UITableViewCell cell = tableView.DequeueReusableCell("setting", path); cell.AccessoryView = null; cell.Accessory = UITableViewCellAccessory.None;
        string title = path.Section switch
        {
            0 => path.Row switch { 0 => "Audio preset", 1 => "Speaker output", 2 => "Advanced audio", 3 => "Audio buffering", _ => model.ScreenSharing ? "Stop sharing screen audio" : "Share screen audio" },
            1 => path.Row switch { 0 => "Input mode", 1 => $"VAD threshold: {model.Settings.VadThreshold:0.000}", 2 => $"Microphone volume: {model.Settings.InputGain:P0}", _ => "Microphone noise reduction" },
            2 => path.Row switch { 0 => "Event sounds", 1 => $"Sound volume: {model.Settings.EventVolume:P0}", 2 => "Speak events", 3 => "Own voice activity sounds", _ => "Push-to-talk cue" },
            3 => "Manage accounts", _ => path.Row == 0 ? "Disconnect" : "VoiceCat 0.0.1"
        };
        var content = cell.DefaultContentConfiguration; content.Text = title; content.SecondaryText = path.Section == 0 && path.Row == 0 ? IosAudioRouter.Shared.Preset.ToString() : path.Section == 1 && path.Row == 0 ? model.Settings.InputMode.ToString() : path.Section == 0 && path.Row == 3 ? $"{model.Settings.AudioBufferMilliseconds} ms" : path.Section == 0 && path.Row == 4 && model.ScreenSharing ? "Sharing" : null; cell.ContentConfiguration = content; cell.AccessibilityLabel = title + (content.SecondaryText is null ? "" : ", " + content.SecondaryText);
        if (path.Section == 0 && path.Row == 1) cell.AccessoryView = Toggle(IosAudioRouter.Shared.ForceSpeaker, "Speaker output", (_, _) => IosAudioRouter.Shared.SetForceSpeaker(((UISwitch)cell.AccessoryView!).On));
        else if (path.Section == 1 && path.Row == 3) cell.AccessoryView = Toggle(model.Settings.InputNoiseReduction, title, (_, _) => { model.Settings.InputNoiseReduction = ((UISwitch)cell.AccessoryView!).On; model.ApplyVoiceSettings(); });
        else if (path.Section == 2 && path.Row is 0 or 2 or 3 or 4) { bool value = path.Row switch { 0 => model.Settings.EventSounds, 2 => model.Settings.SpokenEvents, 3 => model.Settings.SelfTalkSounds, _ => model.Settings.PushToTalkSound }; int row = path.Row; cell.AccessoryView = Toggle(value, title, (_, _) => { bool on = ((UISwitch)cell.AccessoryView!).On; if (row == 0) model.Settings.EventSounds = on; else if (row == 2) model.Settings.SpokenEvents = on; else if (row == 3) model.Settings.SelfTalkSounds = on; else model.Settings.PushToTalkSound = on; model.Save(); }); }
        else if (path.Section == 0 && path.Row is 2 or 3 || path.Section == 3) cell.Accessory = UITableViewCellAccessory.DisclosureIndicator;
        return cell;
    }
    public override async void RowSelected(UITableView tableView, NSIndexPath path)
    {
        tableView.DeselectRow(path, true); try
        {
            if (path.Section == 0 && path.Row == 0) Choice("Audio preset", Enum.GetValues<IosAudioPreset>().Select(value => value.ToString()).ToArray(), index => IosAudioRouter.Shared.SelectPreset(Enum.GetValues<IosAudioPreset>()[index]));
            else if (path.Section == 0 && path.Row == 2) NavigationController?.PushViewController(new AdvancedAudioController(), true);
            else if (path.Section == 0 && path.Row == 3) Choice("Audio buffering", ["Low latency (20 ms)", "Balanced (40 ms)", "Stable (60 ms)"], index => { model.Settings.AudioBufferMilliseconds = index switch { 0 => 20, 2 => 60, _ => 40 }; model.ApplyVoiceSettings(); });
            else if (path.Section == 0 && path.Row == 4) ShowScreenSharing();
            else if (path.Section == 1 && path.Row == 0) Choice("Input mode", ["Voice activation", "Push to talk", "Always on"], index => { model.Settings.InputMode = (AudioInputMode)index; model.ApplyVoiceSettings(); });
            else if (path.Section == 1 && path.Row == 1) Slider("Voice activation threshold", 0.001f, 0.1f, model.Settings.VadThreshold, value => { model.Settings.VadThreshold = value; model.ApplyVoiceSettings(); });
            else if (path.Section == 1 && path.Row == 2) Slider("Microphone volume", 0, 4, model.Settings.InputGain, value => { model.Settings.InputGain = value; model.ApplyVoiceSettings(); });
            else if (path.Section == 2 && path.Row == 1) Slider("Sound volume", 0, 1, model.Settings.EventVolume, value => { model.Settings.EventVolume = value; model.Save(); });
            else if (path.Section == 3) NavigationController?.PushViewController(new AccountsController(model), true);
            else if (path.Section == 4 && path.Row == 0) await model.DisconnectAsync();
        }
        catch (Exception exception) { UiHelpers.ShowError(this, exception); }
    }
    private static UISwitch Toggle(bool value, string label, EventHandler changed) { var toggle = new UISwitch { On = value, AccessibilityLabel = label }; toggle.ValueChanged += changed; return toggle; }
    private void Choice(string title, string[] values, Action<int> selected) { UIAlertController alert = UIAlertController.Create(title, null, UIAlertControllerStyle.ActionSheet); for (int i = 0; i < values.Length; i++) { int index = i; alert.AddAction(UIAlertAction.Create(values[i], UIAlertActionStyle.Default, _ => selected(index))); } alert.AddAction(UIAlertAction.Create("Cancel", UIAlertActionStyle.Cancel, null)); alert.PopoverPresentationController!.SourceView = View!; PresentViewController(alert, true, null); }
    private void Slider(string title, float minimum, float maximum, float current, Action<float> changed) { var slider = new UISlider(new CoreGraphics.CGRect(16, 48, 238, 28)) { MinValue = minimum, MaxValue = maximum, Value = current, AccessibilityLabel = title }; UIAlertController alert = UIAlertController.Create(title, null, UIAlertControllerStyle.Alert); alert.View!.AddSubview(slider); alert.AddAction(UIAlertAction.Create("Cancel", UIAlertActionStyle.Cancel, null)); alert.AddAction(UIAlertAction.Create("Apply", UIAlertActionStyle.Default, _ => changed(slider.Value))); PresentViewController(alert, true, null); }
    private void ShowScreenSharing()
    {
        // ScreenCaptureKit is the preferred iOS 27 path, but `IsAvailable` also reflects
        // policy restrictions and transient OS state. Keep the bundled ReplayKit provider as
        // a compatibility path instead of reporting that capable hardware is unsupported.
        if (IosScreenCapture.IsAvailable) { model.ToggleScreenAudio(); return; }
#pragma warning disable CA1422
        var picker = new RPSystemBroadcastPickerView(new CoreGraphics.CGRect(0, 0, 60, 60)) { PreferredExtension = IosConstants.BroadcastExtension, ShowsMicrophoneButton = false };
#pragma warning restore CA1422
        foreach (UIView view in picker.Subviews) view.AccessibilityLabel = model.ScreenSharing ? "Stop sharing screen audio" : "Share screen audio";
        UIAlertController alert = UIAlertController.Create("Screen Audio", "Tap the broadcast button, then choose Start Broadcast.", UIAlertControllerStyle.Alert); UIView alertView = alert.View!; alertView.AddSubview(picker); picker.Center = new(alertView.Bounds.GetMidX(), 110); alert.AddAction(UIAlertAction.Create("Done", UIAlertActionStyle.Cancel, null)); PresentViewController(alert, true, null);
    }
}

internal sealed class AdvancedAudioController : UITableViewController
{
    private readonly IosAudioRouter router = IosAudioRouter.Shared; private readonly ListRefresher refresher;
    internal AdvancedAudioController() : base(UITableViewStyle.InsetGrouped)
    {
        Title = "Advanced Audio";
        refresher = new(this, Signature, handler => IosAudioRouter.Shared.Changed += handler, handler => IosAudioRouter.Shared.Changed -= handler);
    }
    public override void ViewDidLoad() { base.ViewDidLoad(); TableView.RegisterClassForCellReuse(typeof(UITableViewCell), "audio"); router.RefreshRoutes(); }
    public override void ViewWillAppear(bool animated) { base.ViewWillAppear(animated); refresher.Start(); }
    public override void ViewDidDisappear(bool animated) { refresher.Stop(); base.ViewDidDisappear(animated); }
    private string Signature() =>
        $"{router.SelectedInputId}|{router.SelectedDataSourceId}|{router.SelectedPolarPattern}|{router.MicMode}|{router.CaptureChannels}|" +
        $"{router.BluetoothMode}|{router.UsesVoiceProcessing}|{router.AutomaticGainControl}|" +
        $"{string.Join(',', router.Inputs.Select(value => value.Name))}|{string.Join(',', router.Outputs.Select(value => value.Name))}";
    public override nint RowsInSection(UITableView tableView, nint section) => 8;
    public override UITableViewCell GetCell(UITableView tableView, NSIndexPath path)
    {
        string title = path.Row switch { 0 => "Input port", 1 => "Microphone orientation", 2 => "Polar pattern", 3 => "Microphone mode", 4 => "Capture channels", 5 => "Bluetooth mode", 6 => "Voice processing and AGC", _ => "Current outputs" };
        UITableViewCell cell = tableView.DequeueReusableCell("audio", path); var content = cell.DefaultContentConfiguration; content.Text = title; content.SecondaryText = path.Row switch { 0 => router.Inputs.FirstOrDefault(value => value.Id == router.SelectedInputId)?.Name ?? "Default", 1 => router.DataSources().FirstOrDefault(value => value.Id == router.SelectedDataSourceId)?.Name ?? "Default", 2 => router.SelectedPolarPattern.ToString(), 3 => router.MicMode.ToString(), 4 => router.CaptureChannels == 2 ? "Stereo" : "Mono", 5 => router.BluetoothMode.ToString(), 6 => router.UsesVoiceProcessing ? "AEC/NS on" + (router.AutomaticGainControl ? ", AGC on" : ", AGC off") : "Unavailable or off", _ => string.Join(", ", router.Outputs.Select(value => value.Name)) }; cell.ContentConfiguration = content; cell.AccessibilityLabel = title + ", " + content.SecondaryText; cell.Accessory = path.Row < 7 ? UITableViewCellAccessory.DisclosureIndicator : UITableViewCellAccessory.None; return cell;
    }
    public override void RowSelected(UITableView tableView, NSIndexPath path) { tableView.DeselectRow(path, true); if (path.Row == 0) Menu("Input port", router.Inputs.Select(value => value.Name).Prepend("Default").ToArray(), index => router.SelectInput(index == 0 ? null : router.Inputs[index - 1].Id)); else if (path.Row == 1) { var values = router.DataSources(); Menu("Microphone orientation", values.Select(value => value.Name).Prepend("Default").ToArray(), index => router.SelectDataSource(index == 0 ? null : values[index - 1].Id)); } else if (path.Row == 2) Menu("Polar pattern", Enum.GetValues<AVAudioDataSourcePolarPattern>().Select(value => value.ToString()).ToArray(), index => router.SelectPolarPattern(Enum.GetValues<AVAudioDataSourcePolarPattern>()[index])); else if (path.Row == 3) Menu("Microphone mode", Enum.GetValues<IosMicMode>().Select(value => value.ToString()).ToArray(), index => router.SetMicMode(Enum.GetValues<IosMicMode>()[index])); else if (path.Row == 4) Menu("Capture channels", ["Mono", "Stereo"], index => router.SetCaptureChannels(index + 1)); else if (path.Row == 5) Menu("Bluetooth mode", Enum.GetValues<IosBluetoothMode>().Select(value => value.ToString()).ToArray(), index => router.SetBluetoothMode(Enum.GetValues<IosBluetoothMode>()[index])); else if (path.Row == 6) Menu("Voice processing", ["Off", "On without AGC", "On with AGC"], index => { router.SetVoiceProcessing(index != 0); router.SetAutomaticGainControl(index == 2); }); }
    private void Menu(string title, string[] values, Action<int> selected) { UIAlertController alert = UIAlertController.Create(title, null, UIAlertControllerStyle.ActionSheet); for (int i = 0; i < values.Length; i++) { int index = i; alert.AddAction(UIAlertAction.Create(values[i], UIAlertActionStyle.Default, _ => selected(index))); } alert.AddAction(UIAlertAction.Create("Cancel", UIAlertActionStyle.Cancel, null)); alert.PopoverPresentationController!.SourceView = View!; PresentViewController(alert, true, null); }
}

internal sealed class AccountsController : UITableViewController
{
    private readonly AppModel model; private IReadOnlyList<AccountEntry> accounts = [];
    internal AccountsController(AppModel model) { this.model = model; Title = "Accounts"; }
    public override async void ViewDidLoad() { base.ViewDidLoad(); TableView.RegisterClassForCellReuse(typeof(UITableViewCell), "account"); NavigationItem.RightBarButtonItem = new(UIBarButtonSystemItem.Add, (_, _) => PromptCreate()); await Refresh(); }
    public override nint RowsInSection(UITableView tableView, nint section) => accounts.Count;
    public override UITableViewCell GetCell(UITableView tableView, NSIndexPath path) { AccountEntry account = accounts[path.Row]; UITableViewCell cell = tableView.DequeueReusableCell("account", path); var content = cell.DefaultContentConfiguration; content.Text = account.Username; content.SecondaryText = $"{(account.IsAdmin ? "Administrator" : "Account")} • created {DateTimeOffset.FromUnixTimeMilliseconds((long)account.CreatedAtUnixMs):d}"; cell.ContentConfiguration = content; cell.AccessibilityLabel = content.Text + ", " + content.SecondaryText; return cell; }
    public override UISwipeActionsConfiguration GetTrailingSwipeActionsConfiguration(UITableView tableView, NSIndexPath path) { AccountEntry account = accounts[path.Row]; UIContextualAction reset = UIContextualAction.FromContextualActionStyle(UIContextualActionStyle.Normal, "Reset password", (_, _, done) => { PromptReset(account); done(true); }); UIContextualAction delete = UIContextualAction.FromContextualActionStyle(UIContextualActionStyle.Destructive, "Delete", (_, _, done) => { ConfirmDelete(account); done(true); }); return UISwipeActionsConfiguration.FromActions([delete, reset]); }
    private async Task Refresh() { try { accounts = await model.Client!.ListAccountsAsync(); TableView.ReloadData(); } catch (Exception exception) { UiHelpers.ShowError(this, exception); } }
    private void PromptCreate() => Credentials("Create Account", "Create", async (name, password) => await Execute(client => client.CreateAccountAsync(name, password)));
    private void PromptReset(AccountEntry account) => Credentials($"Reset {account.Username}", "Reset", async (_, password) => await Execute(client => client.ResetPasswordAsync(account.Username, password)), account.Username, false);
    private void ConfirmDelete(AccountEntry account) { UIAlertController alert = UIAlertController.Create("Delete account?", account.Username, UIAlertControllerStyle.Alert); alert.AddAction(UIAlertAction.Create("Cancel", UIAlertActionStyle.Cancel, null)); alert.AddAction(UIAlertAction.Create("Delete", UIAlertActionStyle.Destructive, async _ => await Execute(client => client.DeleteAccountAsync(account.Username)))); PresentViewController(alert, true, null); }
    private void Credentials(string title, string action, Func<string, string, Task> run, string username = "", bool editName = true) { UIAlertController prompt = UIAlertController.Create(title, null, UIAlertControllerStyle.Alert); prompt.AddTextField(field => { field.Placeholder = "Username"; field.Text = username; field.Enabled = editName; field.AccessibilityLabel = "Username"; }); prompt.AddTextField(field => { field.Placeholder = "Password"; field.SecureTextEntry = true; field.AccessibilityLabel = "New password"; }); prompt.AddAction(UIAlertAction.Create("Cancel", UIAlertActionStyle.Cancel, null)); prompt.AddAction(UIAlertAction.Create(action, UIAlertActionStyle.Default, async _ => await run(prompt.TextFields?[0].Text ?? "", prompt.TextFields?[1].Text ?? ""))); PresentViewController(prompt, true, null); }
    private async Task Execute(Func<VoiceCat.Core.VoiceCatClient, Task<GenericResult>> operation) { try { GenericResult result = await model.RunAdminAsync(operation); if (!result.Ok) throw new InvalidOperationException(result.Message); await Refresh(); } catch (Exception exception) { UiHelpers.ShowError(this, exception); } }
}