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

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

        public static void ConfigureSwagger(this WebApplication app)
        {
            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);
            });
        }

        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.MapType<DateOnly>(() => new()
                {
                    Format= "date",
                    Example = new OpenApiString(DateOnly.MinValue.ToString())
                });

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