squash a bunch of commits

Shogi.Sockets/Extensions/Extensions.cs

@@ -0,0 +1,30 @@
+using System.Security.Claims;
+
+namespace Shogi.Api.Extensions;
+
+public static class Extensions
+{
+	private static readonly string MsalUsernameClaim = "preferred_username";
+
+	public static string? GetGuestUserId(this ClaimsPrincipal self)
+	{
+		return self.Claims.FirstOrDefault(c => c.Type == ClaimTypes.NameIdentifier)?.Value;
+	}
+
+	public static string? DisplayName(this ClaimsPrincipal self)
+	{
+		return self.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Name)?.Value;
+	}
+
+	public static bool IsMicrosoft(this ClaimsPrincipal self)
+	{
+		return self.HasClaim(c => c.Type == MsalUsernameClaim);
+	}
+
+	public static string? GetMicrosoftUserId(this ClaimsPrincipal self)
+	{
+		return self.Claims.FirstOrDefault(c => c.Type == MsalUsernameClaim)?.Value;
+	}
+
+	public static string? GetShogiUserId(this ClaimsPrincipal self) => self.IsMicrosoft() ? self.GetMicrosoftUserId() : self.GetGuestUserId();
+}