using Blog.Core.Common;
using Blog.Core.Extensions.Middlewares;
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.Filters;
using Swashbuckle.AspNetCore.SwaggerUI;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using static Blog.Core.Extensions.CustomApiVersion;
namespace Blog.Core.Gateway.Extensions
{
    public static class CustomSwaggerSetup
    {
        public static void AddCustomSwaggerSetup(this IServiceCollection services)
        {
            if (services == null) throw new ArgumentNullException(nameof(services));

            var basePath = AppContext.BaseDirectory;

            services.AddMvc(option => option.EnableEndpointRouting = false);

            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo
                {
                    Version = "v1",
                    Title = "自定义网关 接口文档",
                });

                var xmlPath = Path.Combine(basePath, "Blog.Core.Gateway.xml");
                c.IncludeXmlComments(xmlPath, true);

                c.OperationFilter<AddResponseHeadersFilter>();
                c.OperationFilter<AppendAuthorizeToSummaryOperationFilter>();

                c.OperationFilter<SecurityRequirementsOperationFilter>();

                c.AddSecurityDefinition("oauth2", new OpenApiSecurityScheme
                {
                    Description = "JWT授权(数据将在请求头中进行传输) 直接在下框中输入Bearer {token}（注意两者之间是一个空格）\"",
                    Name = "Authorization",
                    In = ParameterLocation.Header,
                    Type = SecuritySchemeType.ApiKey
                });
            });
        }

        public static void UseCustomSwaggerMildd(this IApplicationBuilder app, Func<Stream> streamHtml)
        {
            if (app == null) throw new ArgumentNullException(nameof(app));

            var apis = new List<string> { "blog-svc" };
            app.UseSwagger();
            app.UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint($"/swagger/v1/swagger.json", "gateway");
                apis.ForEach(m =>
                {
                    c.SwaggerEndpoint($"/swagger/apiswg/{m}/swagger.json", m);
                });


                if (streamHtml.Invoke() == null)
                {
                    var msg = "index.html的属性，必须设置为嵌入的资源";
                    throw new Exception(msg);
                }

                c.IndexStream = streamHtml;

                c.RoutePrefix = "";
            });
        }


    }
}