using System;
using System.Threading;
using System.Threading.Tasks;
using Hncore.Infrastructure.Common;
using Hncore.Infrastructure.Common.DingTalk;
using Hncore.Infrastructure.Extension;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Logging;
using NLog.Extensions.Logging;

namespace Hncore.Infrastructure.WebApi
{
    /// <summary>
    /// 应用程序构建器扩展类
    /// </summary>
    /// 
    public static class ApplicationBuilderExtend
    {
        /// <summary>
        /// 初始化应用程序构建器
        /// </summary>
        /// <param name="app">当前应用程序构建器对象</param>
        /// <param name="loggerFactory">日志工厂对象</param>
        /// <returns>初始化后的应用程序构建器对象</returns>
        /// <param name="applicationLifetime">应用程序生命周期对象</param>
        /// 
        public static IApplicationBuilder Init(this IApplicationBuilder app, ILoggerFactory loggerFactory,
            IApplicationLifetime applicationLifetime)
        {
            loggerFactory.AddNLog(); //启用Nlog日志插件

            app.UseErrorHandling(); //添加统一错误异常处理中间件(一个自定义类)



            //启用Cors(跨域请求)支持(默认关闭状态)

            app.UseCors(builder => builder
                    .SetIsOriginAllowed(host => true) //允许所有来源                       
                    .AllowAnyMethod() //允许任何请求方法(GET、POST、PUT、DELETE等)
                    .AllowAnyHeader() //允许任何请求头信息
                    .AllowCredentials() //允许跨域凭据
                   // .SetPreflightMaxAge(TimeSpan.FromDays(30)) //指定可以缓存预检请求的响应的时间为30天
                    .WithExposedHeaders("X-Suggested-Filename", "set-user-token", "set-user")
            );
            app.UseMvc(); //启用MVC


            //向应用程序生命周期的“应用程序已完全启动”事件注册回调函数
            applicationLifetime.ApplicationStarted.Register(OnAppStarted);
            
            return app;
        }

        /// <summary>
        /// 应用程序完全启动完成处理回调函数
        /// </summary>
        /// 
        private static void OnAppStarted()
        {
            //if (EnvironmentVariableHelper.IsAspNetCoreProduction)
            //{
            //    DingTalkHelper.SendMessage(new MarkDownModel()
            //    {
            //        markdown = new markdown()
            //        {
            //            title = "应用已启动",
            //            text = "### 应用已启动\n\nhostname：" + EnvironmentVariableHelper.HostName + "\n\n" +
            //                   DateTime.Now.Format("yyyy-MM-dd HH:mm:ss")
            //        }
            //    });
            //}
        }
    }
}