using Easy.Blog.Configurations;
using Easy.Blog.Web.SwaggerFilter;
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.Filters;
using System;
using System.Collections.Generic;
using System.IO;
using static Easy.Blog.BlogConsts;

namespace Easy.Blog.Swagger
{
 public static class BlogSwaggerExtensions
 {
 /// <summary>
 /// 当前API版本,从appsettings.json获取
 /// </summary>
 private static readonly string version = $"v{AppSettings.ApiVersion}";

 /// <summary>
 /// Swagger描述信息
 /// </summary>
 private static readonly string description = @"<b>Blog</b>:<a target=""_blank"" href=""https://meowv.com"">https://meowv.com</a> <b>GitHub</b>:<a target=""_blank"" href=""https://github.com/Meowv/Blog"">https://github.com/Meowv/Blog</a> <b>Hangfire</b>:<a target=""_blank"" href=""/hangfire"">任务调度中心</a> <code>Powered by .NET Core 3.1 on Linux</code>";
 public static IServiceCollection AddSwagger(this IServiceCollection services)
 {
 return services.AddSwaggerGen(options =>
 {
 ApiInfos.ForEach(x =>
 {
 options.SwaggerDoc(x.UrlPrefix, x.OpenApiInfo);
 });

 options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, "Easy.Blog.HttpApi.xml"));
 options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, "Easy.Blog.Domain.xml"));
 options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, "Easy.Blog.Application.Contracts.xml"));

 // jwt
 var security = new OpenApiSecurityScheme
 {
 Description = "JWT模式授权,请输入 Bearer {Token} 进行身份验证",
 Name = "Authorization",
 In = ParameterLocation.Header,
 Type = SecuritySchemeType.ApiKey
 };
 options.AddSecurityDefinition("oauth2", security);
 options.AddSecurityRequirement(new OpenApiSecurityRequirement { { security, new List<string>() } });
 options.OperationFilter<AddResponseHeadersFilter>();
 options.OperationFilter<AppendAuthorizeToSummaryOperationFilter>();
 options.OperationFilter<SecurityRequirementsOperationFilter>();
 // 应用Controller的API文档描述信息
 options.DocumentFilter<SwaggerDocumentFilter>();
 });
 }

 public static void UseSwaggerUI(this IApplicationBuilder app)
 {
 app.UseSwaggerUI(options =>
 {
 // 遍历分组信息,生成Json
 ApiInfos.ForEach(x =>
 {
 options.SwaggerEndpoint($"/swagger/{x.UrlPrefix}/swagger.json", x.Name);
 });
 });
 }

 /// <summary>
 /// Swagger分组信息,将进行遍历使用
 /// </summary>
 private static readonly List<SwaggerApiInfo> ApiInfos = new List<SwaggerApiInfo>()
 {
 new SwaggerApiInfo
 {
 UrlPrefix = Grouping.GroupName_v1,
 Name = "博客前台接口",
 OpenApiInfo = new OpenApiInfo
 {
 Version = version,
 Title = "阿星Plus - 博客前台接口",
 Description = description
 }
 },
 new SwaggerApiInfo
 {
 UrlPrefix = Grouping.GroupName_v2,
 Name = "博客后台接口",
 OpenApiInfo = new OpenApiInfo
 {
 Version = version,
 Title = "阿星Plus - 博客后台接口",
 Description = description
 }
 },
 new SwaggerApiInfo
 {
 UrlPrefix = Grouping.GroupName_v3,
 Name = "通用公共接口",
 OpenApiInfo = new OpenApiInfo
 {
 Version = version,
 Title = "阿星Plus - 通用公共接口",
 Description = description
 }
 },
 new SwaggerApiInfo
 {
 UrlPrefix = Grouping.GroupName_v4,
 Name = "JWT授权接口",
 OpenApiInfo = new OpenApiInfo
 {
 Version = version,
 Title = "阿星Plus - JWT授权接口",
 Description = description
 }
 }
 };
 internal class SwaggerApiInfo
 {
 /// <summary>
 /// URL前缀
 /// </summary>
 public string UrlPrefix { get; set; }

 /// <summary>
 /// 名称
 /// </summary>
 public string Name { get; set; }

 /// <summary>
 /// <see cref="Microsoft.OpenApi.Models.OpenApiInfo"/>
 /// </summary>
 public OpenApiInfo OpenApiInfo { get; set; }
 }
 }
}