Implement responsive profile and account data controls

api/QuestionsApi/Program.cs

@@ -25,6 +25,7 @@ builder.Services.AddSingleton<UserNotepadStore>();
 builder.Services.AddSingleton<QuestionBookmarkStore>();
 builder.Services.AddSingleton<ReviewQueueStore>();
 builder.Services.AddSingleton<DashboardStore>();
+builder.Services.AddSingleton<UserProfileStore>();
 builder.Services.AddSingleton<ServiceMetrics>();
 builder.Services.AddHostedService<AnswerStatisticsMaintenanceService>();
 
@@ -71,6 +72,18 @@ builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
             ValidateLifetime = true,
             ClockSkew = TimeSpan.FromSeconds(30)
         };
+        o.Events = new JwtBearerEvents
+        {
+            OnTokenValidated = async context =>
+            {
+                var userId = context.Principal?.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+                if (!string.IsNullOrWhiteSpace(userId))
+                {
+                    var profiles = context.HttpContext.RequestServices.GetRequiredService<UserProfileStore>();
+                    if (await profiles.IsDeletedAsync(userId)) context.Fail("Account deleted");
+                }
+            }
+        };
     });
 
 builder.Services.AddAuthorization();