ref: project structure

api/ClaimsExtensions.cs

@@ -0,0 +1,19 @@
+using System.Security.Claims;
+using Microsoft.IdentityModel.JsonWebTokens;
+
+namespace mws.backend.dotnet.api;
+
+public static class ClaimsExtensions
+{
+    public static Guid GetUserId(this ClaimsPrincipal principal)
+    {
+        var value = principal.FindFirstValue(JwtRegisteredClaimNames.Sub)
+            ?? principal.FindFirstValue(ClaimTypes.NameIdentifier)
+            ?? principal.FindFirstValue("sub");
+        if (value is not null && Guid.TryParse(value, out var id))
+        {
+            return id;
+        }
+        throw new UnauthorizedAccessException("Invalid user identity");
+    }
+}