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

public class SwaggerOptions: IConfigureNamedOptions<SwaggerGenOptions>

    {
        private readonly IApiVersionDescriptionProvider _provider;

        public SwaggerOptions(
            IApiVersionDescriptionProvider provider)
        {
            _provider = provider;
        }

        /// <summary>
        /// Configure each API discovered for Swagger Documentation
        /// </summary>
        /// <param name="options"></param>
        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));
            }
        }

        /// <summary>
        /// Configure Swagger Options. Inherited from the Interface
        /// </summary>
        /// <param name="name"></param>
        /// <param name="options"></param>
        public void Configure(string? name, SwaggerGenOptions options)
        {
            Configure(options);
        }

        /// <summary>
        /// Create information about the version of the API
        /// </summary>
        /// <param name="description"></param>
        /// <returns>Information about the API</returns>
        private OpenApiInfo CreateVersionInfo(
                ApiVersionDescription desc)
        {
            var info = new OpenApiInfo()
            {
                Title = "Web API For HeartTrack .NET 8",
                Version = desc.ApiVersion.ToString(),
                Description = "The HeartTrack project API, aims to provide an Open Source solution for heart rate data analysis.",
                Contact = new OpenApiContact { Name = "HeartTrackDev", Email = "toto@toto.fr" },
                License = new OpenApiLicense { Name = "MIT", Url = new Uri("https://opensource.org/licenses/MIT") }

            };

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

            return info;
        }
    }