Add DTR entry with number of visible pairs (#52)

* Add DTR entry with number of visible pairs

* Simplify DTR visible pair counter

- Merge the new PairHandlerInvisibleMessage and PairHandlerVisibleDisposedMessage ;
- Leave alone a bunch of messages that were actually unneccessary.

* Match encodings with the rest of the codebase

* Make the DTR entry opt-in and add explanations

* More reliable publishing of PairHandlerVisible/Invisible

* Simplify things for DTR

* Rework async

MareSynchronos/UI/DtrEntry.cs

@@ -0,0 +1,99 @@
+using Dalamud.Game.Gui.Dtr;
+using MareSynchronos.MareConfiguration;
+using MareSynchronos.MareConfiguration.Configurations;
+using MareSynchronos.PlayerData.Pairs;
+using MareSynchronos.Utils;
+using MareSynchronos.WebAPI;
+using Microsoft.Extensions.Hosting;
+
+namespace MareSynchronos.UI;
+
+public sealed class DtrEntry : IDisposable, IHostedService
+{
+    private readonly DtrBarEntry _entry;
+    private readonly ConfigurationServiceBase<MareConfig> _configService;
+    private readonly PairManager _pairManager;
+    private readonly ApiController _apiController;
+
+    private readonly CancellationTokenSource _cancellationTokenSource = new();
+    private Task? _runTask;
+    private string? _text;
+
+    public DtrEntry(DtrBar dtrBar, ConfigurationServiceBase<MareConfig> configService, PairManager pairManager, ApiController apiController)
+    {
+        _entry = dtrBar.Get("Mare Synchronos");
+        _configService = configService;
+        _pairManager = pairManager;
+        _apiController = apiController;
+
+        Clear();
+    }
+
+    public void Dispose()
+    {
+        _entry.Dispose();
+    }
+
+    private void Update()
+    {
+        if (!_configService.Current.EnableDtrEntry)
+        {
+            if (_entry.Shown)
+            {
+                Clear();
+            }
+            return;
+        }
+
+        if (!_entry.Shown)
+        {
+            _entry.Shown = true;
+        }
+
+        string text;
+        if (_apiController.IsConnected)
+        {
+            text = $"\uE044 {_pairManager.GetVisibleUserCount()}";
+        }
+        else
+        {
+            text = "\uE044 \uE04C";
+        }
+        if (!string.Equals(text, _text, StringComparison.Ordinal))
+        {
+            _text = text;
+            _entry.Text = text;
+        }
+    }
+
+    private void Clear()
+    {
+        _text = null;
+
+        _entry.Shown = false;
+        _entry.Text = null;
+    }
+
+    private async Task RunAsync()
+    {
+        while (!_cancellationTokenSource.IsCancellationRequested)
+        {
+            Update();
+            await Task.Delay(1000, _cancellationTokenSource.Token).ConfigureAwait(false);
+        }
+    }
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        _runTask = Task.Run(RunAsync, _cancellationTokenSource.Token);
+        return Task.CompletedTask;
+    }
+
+    public async Task StopAsync(CancellationToken cancellationToken)
+    {
+        _cancellationTokenSource.Cancel();
+        await _runTask!.ConfigureAwait(false);
+        _cancellationTokenSource.Dispose();
+        Clear();
+    }
+}

MareSynchronos/UI/SettingsUi.cs

@@ -515,6 +515,7 @@ public class SettingsUi : WindowMediatorSubscriberBase
         var profileDelay = _configService.Current.ProfileDelay;
         var profileOnRight = _configService.Current.ProfilePopoutRight;
         var enableRightClickMenu = _configService.Current.EnableRightClickMenus;
+        var enableDtrEntry = _configService.Current.EnableDtrEntry;
         var preferNotesInsteadOfName = _configService.Current.PreferNotesOverNamesForVisible;
 
         if (ImGui.Checkbox("Enable Game Right Click Menu Entries", ref enableRightClickMenu))
@@ -524,6 +525,13 @@ public class SettingsUi : WindowMediatorSubscriberBase
         }
         UiSharedService.DrawHelpText("This will add Mare related right click menu entries in the game UI on paired players.");
 
+        if (ImGui.Checkbox("Display status and visible pair count in Server Info Bar", ref enableDtrEntry))
+        {
+            _configService.Current.EnableDtrEntry = enableDtrEntry;
+            _configService.Save();
+        }
+        UiSharedService.DrawHelpText("This will add Mare connection status and visible pair count in the Server Info Bar.\nYou can further configure this through your Dalamud Settings.");
+
         if (ImGui.Checkbox("Show separate Visible group", ref showVisibleSeparate))
         {
             _configService.Current.ShowVisibleUsersSeparately = showVisibleSeparate;