Add project files.

MyOffice.Core/Extensions/ClaimsExtensions.cs

@@ -0,0 +1,31 @@
+namespace MyOffice.Core.Extensions;
+
+using System.Security.Claims;
+
+public static class ClaimsExtensions
+{
+	public static string? GetValue(this IEnumerable<Claim> claims, string type)
+	{
+		return claims.FirstOrDefault(x => x.Type.Equals(type, StringComparison.OrdinalIgnoreCase))?.Value;
+	}
+
+	public static string? GetValue(this IEnumerable<Claim> claims, string[] types)
+	{
+		return claims.FirstOrDefault(x => types.Any(z => x.Type.Equals(z, StringComparison.OrdinalIgnoreCase)))?.Value;
+	}
+
+	public static string? GetEmail(this IEnumerable<Claim> claims)
+	{
+		return GetValue(claims, new[] { ClaimTypes.Email, "email" });
+	}
+
+	public static string? GetNameIdentifier(this IEnumerable<Claim> claims)
+	{
+		return GetValue(claims, ClaimTypes.NameIdentifier);
+	}
+
+	public static string? GetSID(this IEnumerable<Claim> claims)
+	{
+		return GetValue(claims, "sid");
+	}
+}