insight/src/Api/Insight.Api/Extensions/ServiceExtensions.cs

using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.OpenApi.Models;
using System.Reflection;

namespace Insight.Api.Hosting;

public static class ServiceExtensions
{
    internal static IServiceCollection AddSwaggerServices(this IServiceCollection services, IConfiguration configuration)
    {
        services.AddEndpointsApiExplorer();
        services.AddSwaggerGen(options =>
        {
            options.SwaggerDoc("v1", new OpenApiInfo
            {
                Title = "Insight API",
                Version = "v1"
            });

            options.AddSecurityDefinition(name: "Bearer", securityScheme: new OpenApiSecurityScheme
            {
                Name = "Authorization",
                Description = "Enter the Bearer Authorization string as following: `Bearer Generated-JWT-Token`",
                In = ParameterLocation.Header,
                Type = SecuritySchemeType.ApiKey,
                Scheme = "Bearer",
                BearerFormat = "JWT",

                Reference = new OpenApiReference
                {
                    Id = JwtBearerDefaults.AuthenticationScheme,
                    Type = ReferenceType.SecurityScheme
                }
            });

            options.AddSecurityRequirement(new OpenApiSecurityRequirement
            {
                {
                    new OpenApiSecurityScheme
                    {
                        In = ParameterLocation.Header,
                        Reference = new OpenApiReference
                        {
                            Id = "Bearer",
                            Type = ReferenceType.SecurityScheme
                        }
                    },
                    new List<string>()
                }
            });

            var xmlFilename = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
            options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, xmlFilename));
        });

        return services;
    }
}