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

namespace Core.Cerberos.Service.API.Extensions
{
    public static class SwaggerExtensions
    {
        public static void AddSwagger(this IServiceCollection services, IConfiguration configuration)
        {
            services.AddEndpointsApiExplorer();
            AddSwaggerGen(services, configuration);
            services.AddTransient<IConfigureOptions<SwaggerGenOptions>, ConfigureSwaggerOptions>();
        }

        /// <summary>
        /// Configures Swagger generation with OAuth2 security and XML comments.
        /// </summary>
        /// <param name="services">The <see cref="IServiceCollection"/> to add the services to.</param>
        /// <param name="configuration">The <see cref="IConfiguration"/> containing Swagger and OAuth2 configuration settings.</param>
        public static void AddSwaggerGen(this IServiceCollection services, IConfiguration configuration)
        {
            services.AddSwaggerGen(c =>
            {
                c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
                {
                    Description = "JWT Authorization header using the Bearer scheme",
                    Name = "Authorization",
                    In = ParameterLocation.Header,
                    Type = SecuritySchemeType.Http,
                    Scheme = "bearer",
                    BearerFormat = "JWT"
                });

                c.AddSecurityRequirement(new OpenApiSecurityRequirement
                {
                    {
                        new OpenApiSecurityScheme
                        {
                            Reference = new OpenApiReference
                            {
                                Type = ReferenceType.SecurityScheme,
                                Id = "Bearer"
                            }
                        },
                        Array.Empty<string>()
                    }
                });
            });
        }
        public static void ConfigureSwagger(this WebApplication app)
        {
            //Swagger Stuff Goes Here

            app.UseSwagger();
            app.UseSwaggerUI(options =>
            {
                foreach (var version in app.DescribeApiVersions().Select(version => version.GroupName))
                    options.SwaggerEndpoint($"/swagger/{version}/swagger.json", version);

                options.DisplayRequestDuration();
                options.EnableTryItOutByDefault();
                options.DocExpansion(DocExpansion.None);
            });

            //  app.MapGet("/", () => Results.Redirect("/swagger/index.html")).WithTags(string.Empty);
        }
        public static IServiceCollection AddVersioning(this IServiceCollection services)
        {
            services.AddApiVersioning(options => options.ReportApiVersions = true)
                   .AddApiExplorer(options =>
                   {
                       options.GroupNameFormat = "'v'VVV";
                       options.SubstituteApiVersionInUrl = true;
                   });

            return services;
        }
    }
    public class ConfigureSwaggerOptions(IApiVersionDescriptionProvider provider) : IConfigureOptions<SwaggerGenOptions>
    {
        private readonly IApiVersionDescriptionProvider _provider = provider;

        public void Configure(SwaggerGenOptions options)
        {
            foreach (var description in _provider.ApiVersionDescriptions)
                options.SwaggerDoc(description.GroupName, new()
                {
                    Title = AppDomain.CurrentDomain.FriendlyName,
                    Version = description.ApiVersion.ToString()
                });


            options.CustomSchemaIds(type => type.ToString().Replace("+", "."));
        }
    }
}