[frontend/core] Add settings service

Iceshrimp.Frontend/Core/Services/SettingsService.cs

@@ -0,0 +1,35 @@
+using Iceshrimp.Frontend.Core.Miscellaneous;
+using Iceshrimp.Shared.Schemas.Web;
+
+namespace Iceshrimp.Frontend.Core.Services;
+
+internal class SettingsService(ApiService api, ILogger<SettingsService> logger)
+{
+	private UserSettingsResponse? UserSettings { get; set; }
+
+	public async Task<UserSettingsResponse> GetUserSettingsAsync()
+	{
+		if (UserSettings is null)
+		{
+			while (UserSettings is null)
+			{
+				await UpdateUserSettingsAsync();
+			}
+		}
+
+		_ = UpdateUserSettingsAsync();
+		return UserSettings;
+	}
+
+	private async Task UpdateUserSettingsAsync()
+	{
+		try
+		{
+			UserSettings = await api.Settings.GetSettingsAsync();
+		}
+		catch (ApiException e)
+		{
+			logger.LogError(e, "Failed to fetch settings");
+		}
+	}
+}

Iceshrimp.Frontend/Startup.cs

@@ -30,6 +30,7 @@ builder.Services.AddSingleton<VersionService>();
 builder.Services.AddSingleton<MessageService>();
 builder.Services.AddSingleton<GlobalComponentSvc>();
 builder.Services.AddSingleton<UpdateService>();
+builder.Services.AddSingleton<SettingsService>();
 builder.Services.AddAuthorizationCore();
 builder.Services.AddCascadingAuthenticationState();
 builder.Services.AddBlazoredLocalStorageAsSingleton();