Program.cs

using DawnLitWeb.Hubs;
using DawnLitWeb.Modules;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using Newtonsoft.Json;

WebApplicationBuilder builder = WebApplication.CreateBuilder(args);

// Add database context to the container.
builder.Services.AddDbContext<DatabaseContext>(
    options =>
        options
            .UseNpgsql(builder.Configuration.GetSection("Database").GetSection("Connection").Value)
    //.EnableSensitiveDataLogging()
);

// Using NewtonsoftJson to handle object cycle for include method
builder.Services.AddControllersWithViews()
    .AddNewtonsoftJson(options =>
        options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore
    );

// Add controllers to the container.
builder.Services.AddControllers();

// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

// Add JWT Authentication Services
builder.Services.AddAuthentication(opt =>
    {
        opt.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
        opt.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    })
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateLifetime = true,
            ValidateIssuerSigningKey = true,
            ValidIssuer = "https://localhost:7061",
            ValidAudience = "https://localhost:7061",
            IssuerSigningKey = Authentications.TOKEN_KEY
        };
    });

// Add hubs to the container.
builder.Services.AddSignalR();

WebApplication app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

// using JWT Authentication
app.UseAuthentication();

app.UseAuthorization();

app.MapControllers();

// map hub
app.MapHub<ChatHub>("/signalr");

app.Run();