Tranga/API/NamedSwaggerGenOptions.cs

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

namespace API;

public class NamedSwaggerGenOptions : IConfigureNamedOptions<SwaggerGenOptions>
{
    private readonly IApiVersionDescriptionProvider provider;
    public NamedSwaggerGenOptions(IApiVersionDescriptionProvider provider)
    {
        this.provider = provider;
    }

    public void Configure(string? name, SwaggerGenOptions options)
    {
        Configure(options);
    }
        
    public void Configure(SwaggerGenOptions options)
    {
        // add swagger document for every API version discovered
        foreach (var description in provider.ApiVersionDescriptions)
        {
            options.SwaggerDoc(
                description.GroupName,
                CreateVersionInfo(description));
        }
    }
        
    private OpenApiInfo CreateVersionInfo(
        ApiVersionDescription description)
    {
        var info = new OpenApiInfo()
        {
            Title = "Test API " + description.GroupName,
            Version = description.ApiVersion.ToString()
        };
        if (description.IsDeprecated)
        {
            info.Description += " This API version has been deprecated.";
        }
        return info;
    }
}