ConfigureSwaggerGenOptions.cs

using Microsoft.AspNetCore.Mvc.ApiExplorer;
using Microsoft.Extensions.Options;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.SwaggerGen;

namespace autogenerate_proto
{
    public class ConfigureSwaggerGenOptions : IConfigureOptions<SwaggerGenOptions>
    {
        private readonly IApiVersionDescriptionProvider _apiVersionDescriptionProvider;

        public ConfigureSwaggerGenOptions(IApiVersionDescriptionProvider apiVersionDescriptionProvider)
            => _apiVersionDescriptionProvider = apiVersionDescriptionProvider;

        /// <summary>
        /// Configure each API discovered for Swagger Documentation
        /// </summary>
        /// <param name="options"></param>
        public void Configure(SwaggerGenOptions options)
        {
            foreach (var description in _apiVersionDescriptionProvider.ApiVersionDescriptions)
            {
                options.SwaggerDoc(description.GroupName, CreateOpenApiInfo(description));
            }
        }

        /// <summary>
        /// Create information about the version of the API
        /// </summary>
        /// <param name="description"></param>
        /// <returns>Information about the API</returns>
        private static OpenApiInfo CreateOpenApiInfo(ApiVersionDescription description)
        {
            var info = new OpenApiInfo()
            {
                Title = "Api_versioning_template.API",
                Version = description.ApiVersion.ToString(),
                Contact = new OpenApiContact()
                {
                    Name = "Cấn Việt Anh",
                    Email = "anhvitcankq@gmail.com",
                    Url = new Uri("https://www.fb.com/vieanh.1104")
                },
            };

            if (description.IsDeprecated)
            {
                info.Description += " This API version has been deprecated. Please use one of the new APIs available from the explorer.";
            }

            return info;
        }
    }
}