using Microsoft.Web.Administration;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace OneClickPublishWeb
{
    /// <summary>
    /// 网站发布帮助类
    /// </summary>
    public class PublishWebHelper
    {
        /// <summary>
        /// 执行一键部署（单个网站部署）
        /// </summary>
        /// <returns></returns>
        public static void Execute()
        {
            //IIS 配置信息
            var configs = GetIISConfigs();
            foreach (var config in configs.MainApplications)
            {
                var vDir = config.VDir;
                var app = config.Applications;
                //程序池配置信息
                var poolsConfig = config.ApplicationPools;
                var iismanager = CreateServerManager(config);

                //创建虚拟目录
                if (vDir != null && vDir.Count() > 0)
                {
                    foreach (var dir in vDir)
                    {
                        CreateVDir(config.WebName, dir.DirName, dir.PhysicalPath, iismanager);
                    }
                }
                if (app!=null)
                {
                    //创建子程序虚拟目录
                    foreach (var item in app)
                    {
                        if (item.VDir!=null)
                        {
                            foreach (var dir in item.VDir)
                            {
                                CreateSubitemVDir(config.WebName, item.Path, dir.DirName, dir.PhysicalPath, iismanager);
                            }
                        }
                      
                    }

                }
                Console.WriteLine("---------------- 程序池 Start ----------------");

                //创建程序池
                foreach (var item in poolsConfig)
                {
                    CreateApplicationPool(item, iismanager);
                }
                Console.WriteLine("---------------- 程序池 End ----------------");
                //提交保存
                CommitChanges(iismanager);
            }
          
        }

        /// <summary>
        /// 创建应用程序
        /// </summary>
        /// <param name="config"></param>
        /// <returns></returns>
        private static ServerManager CreateServerManager(MainApplication config)
        {
            var ApplicationsConfig = config;

            ServiceController service = ServiceController.GetServices("127.0.0.1").FirstOrDefault(x => x.ServiceName == "W3SVC");

            if (service is null)
            {
                Console.WriteLine("服务器尚未安装 IIS 服务模块！");
                return null;
            }

            if (!System.IO.Directory.Exists(config.WebsiteDirectory))
            {
                Console.WriteLine("指定目录不存在！");
                return null;
            }
            ServerManager iismanager = new ServerManager();
            //判断web应用程序是否存在
            if (iismanager.Sites[config.WebName] != null)
            {
                ///移除应用程序
                iismanager.Sites.Remove(iismanager.Sites[config.WebName]);
            }
            //建立web应用程序（第二个参数为安装文件的地址）

            Site site = default; 
            if (config.IsCertificate)
            {
                site = AddHostHeaderSSL(iismanager, config.WebName, config.Port, "", config.PhysicalPath);
            }
            else
            {
                site =  iismanager.Sites.Add(config.WebName, config.WebsiteDirectory, config.Port);
            }

            Console.WriteLine("---------------- 主应用程序 Start ----------------");
            Console.WriteLine($"网站名称：{config.ServerDomainName}");
            Console.WriteLine($"端口：{config.Port}");
            Console.WriteLine($"服务器域名：{config.ServerDomainName}");
            Console.WriteLine($"网站目录：{config.WebsiteDirectory}");
            Console.WriteLine($"程序池名称：{config.ApplicationPoolName}");
            Console.WriteLine("---------------- 主应用程序 End ----------------");

            Console.WriteLine("---------------- 子程序 Start ----------------");
            //设置子程序 - 应用程序池
            if (ApplicationsConfig.Applications!=null)
            {
                foreach (var item in ApplicationsConfig.Applications)
                {
                    var application = site.Applications.Add("/" + item.Path, item.PhysicalPath);
                    application.ApplicationPoolName = item.ApplicationPoolName;
                    Console.WriteLine("****************************** ↓");
                    Console.WriteLine($"子程序路径名称：/{item.Path}");
                    Console.WriteLine($"物理路径：{item.PhysicalPath}");
                }
                Console.WriteLine("---------------- 子程序 End ----------------");
            }
           
            //设置web网站的应用程序池
            var website = iismanager.Sites[config.WebName];
            website.Applications["/"].ApplicationPoolName = config.ApplicationPoolName;
            if (!string.IsNullOrEmpty(config.ServerDomainName))
            {
                string str = website.Bindings[0].Host.Split(new char[] { '.' })[0];
                string bindingInformation = $"*:{config.Port}:{str}{config.ServerDomainName}";
                website.Bindings.Add(bindingInformation, "http");
            }
            return iismanager;
        }

        /// <summary>
        /// 提交更改
        /// </summary>
        /// <param name="iismanager"></param>
        private static void CommitChanges(ServerManager iismanager)
        {
            //提交更改
            iismanager.CommitChanges();
        }


        /// <summary>
        /// 创建程序池
        /// </summary>
        /// <param name="pool"></param>
        private static void CreateApplicationPool(ApplicationPool poolConfig, ServerManager iismanager)
        {
            //判断应用程序池是否存在
            if (iismanager.ApplicationPools[poolConfig.Name] != null)
            {
                //移除应用程序池
                iismanager.ApplicationPools.Remove(iismanager.ApplicationPools[poolConfig.Name]);
            }

            //cpu
            var cpuConfig = poolConfig.Cpu;
            //回收
            var recyclingConfig = poolConfig.Recycling;
            //定期重启
            var periodicRestartConfig = poolConfig.Recycling.PeriodicRestart;
            //进程孤立
            var failureConfig = poolConfig.Failure;
            //进程模型
            var processModelConfig = poolConfig.ProcessModel;

            Microsoft.Web.Administration.ApplicationPool pool = iismanager.ApplicationPools.Add(poolConfig.Name);
            pool.Name = poolConfig.Name; // 程序池名字
            pool.StartMode = poolConfig.StartMode;//启动模式
            pool.QueueLength = poolConfig.QueueLength;//队列长度
            pool.ManagedRuntimeVersion = poolConfig.ManagedRuntimeVersion;
            //pool.Enable32BitAppOnWin64 = pool.Enable32BitAppOnWin64;
            pool.ManagedPipelineMode = ManagedPipelineMode.Integrated; //托管管道模式
            pool.Cpu.Limit = cpuConfig.Limit;//限制最大CPU 50%
            pool.Cpu.Action = cpuConfig.Action;//竞争cpu时限制使用最大cpu 百分比
            pool.Cpu.ResetInterval = new TimeSpan(00, cpuConfig.ResetInterval, 00); //时隔5分钟
            pool.Cpu.SmpAffinitized = cpuConfig.SmpAffinitized ?? false;
            //回收
            pool.Recycling.DisallowRotationOnConfigChange = recyclingConfig.DisallowRotationOnConfigChange ?? true; //发生配置更改时禁止回收
            pool.Recycling.DisallowOverlappingRotation = recyclingConfig.DisallowOverlappingRotation ?? true;//禁用重叠回收
            RecyclingLogEventOnRecycle logEventOnRecycle = RecyclingLogEventOnRecycle.None;
            foreach (var item in recyclingConfig.LogEventOnRecycle)
            {
                logEventOnRecycle = logEventOnRecycle | item;
            }
            if (recyclingConfig.LogEventOnRecycle != null && recyclingConfig.LogEventOnRecycle.Count() > 0)
                pool.Recycling.LogEventOnRecycle = logEventOnRecycle;
            foreach (var item in periodicRestartConfig.Schedule)
            {
                pool.Recycling.PeriodicRestart.Schedule.Add(item);//定时回收资源
            }
            pool.Recycling.PeriodicRestart.PrivateMemory = periodicRestartConfig.PrivateMemory;
            pool.Recycling.PeriodicRestart.Time = new TimeSpan(00, periodicRestartConfig.Time, 00);
            pool.Recycling.PeriodicRestart.Requests = periodicRestartConfig.Requests;
            pool.Recycling.PeriodicRestart.Memory = periodicRestartConfig.Memory;
            //进程孤立
            pool.Failure.OrphanActionParams = failureConfig.OrphanActionParams;
            pool.Failure.OrphanActionExe = failureConfig.OrphanActionExe;
            pool.Failure.OrphanWorkerProcess = failureConfig.OrphanWorkerProcess ?? false;
            //模型
            pool.ProcessModel.PingInterval = new TimeSpan(00, 00, processModelConfig.PingInterval);
            pool.ProcessModel.PingResponseTime = new TimeSpan(00, 00, processModelConfig.PingResponseTime);
            pool.ProcessModel.IdentityType = processModelConfig.IdentityType;
            pool.ProcessModel.UserName = processModelConfig.UserName;
            pool.ProcessModel.Password = processModelConfig.Password;
            pool.ProcessModel.ShutdownTimeLimit = new TimeSpan(00, 00, processModelConfig.ShutdownTimeLimit);
            pool.ProcessModel.LoadUserProfile = processModelConfig.LoadUserProfile ?? false;
            pool.ProcessModel.IdleTimeoutAction = IdleTimeoutAction.Terminate;
            pool.ProcessModel.StartupTimeLimit = new TimeSpan(00, 00, processModelConfig.StartupTimeLimit);
            pool.ProcessModel.PingingEnabled = processModelConfig.PingingEnabled ?? false;
            pool.ProcessModel.LogEventOnProcessModel = processModelConfig.LogEventOnProcessModel;
            pool.ProcessModel.IdleTimeout = new TimeSpan(00, processModelConfig.IdleTimeout, 00);
            pool.ProcessModel.MaxProcesses = processModelConfig.MaxProcesses;
            Console.WriteLine("****************************** ↓");
            Console.WriteLine($"程序池名称：{poolConfig.Name}");
            Console.WriteLine($"队列长度：{poolConfig.QueueLength}");
            Console.WriteLine($"启动模式：{poolConfig.StartMode}");
            //Console.WriteLine($"启用32位应用程序：{poolConfig.Enable32BitAppOnWin64}");
            Console.WriteLine($"托管管道模式：{poolConfig.ManagedPipelineMode}");
        }

        /// <summary>
        /// 获取IIS配置
        /// </summary>
        /// <returns></returns>
        private static IISConfig GetIISConfigs()
        {
            var path = Path.GetFullPath("./cfg/config.json");
            using (System.IO.StreamReader file = System.IO.File.OpenText(path))
            {
                using (JsonTextReader reader = new JsonTextReader(file))
                {
                    var o = (JObject)JToken.ReadFrom(reader);
                    var iis = o.ToObject<IISConfig>();
              
                    return iis;
                }
            }
        }


        /// <summary>
        /// 添加虚拟目录
        /// </summary>
        /// <param name="siteName">网站名</param>
        /// <param name="vDirName">目录名</param>
        /// <param name="physicalPath">对应的文件夹路径</param>
        /// <param name="iismanager"></param>
        private static void CreateVDir(string siteName, string vDirName, string physicalPath, ServerManager iismanager)
        {

            Site site = iismanager.Sites[siteName];
            if (site == null)
            {
                return;
            }
            site.Applications["/"].VirtualDirectories.Add("/" + vDirName, physicalPath);
        }

        /// <summary>
        /// 添加虚拟目录
        /// </summary>
        /// <param name="siteName">网站名</param>
        /// <param name="vDirName">目录名</param>
        /// <param name="physicalPath">对应的文件夹路径</param>
        /// <param name="iismanager"></param>
        private static void CreateSubitemVDir(string siteName, string subitemSiteName, string vDirName, string physicalPath, ServerManager iismanager)
        {

            var app = iismanager.Sites[siteName].Applications["/" + subitemSiteName];
            if (app == null)
            {
                return;
            }
            app.VirtualDirectories.Add("/" + vDirName, physicalPath);
        }


        // <summary>
        /// 增加绑定域名（ssl）
        /// </summary>
        /// <param name="webName">站点名称</param>
        /// <param name="port">端口</param>
        /// <param name="bindingDomainName">绑定域名</param>
        public static Site AddHostHeaderSSL(ServerManager iismanager, string webName, int port, string bindingDomainName, string physicalPath)
        {
            //**pfxPath**是指提供给你的.pfx文件的路径，购买ssl之后他会提供给你相关的文件，里面有多个文件
            //一般包含apache文件夹，iis文件夹，nginx文件夹，我使用的是iis部署，所以.pfx文件在iis文件夹里面
            //**certPwd**是指购买ssl之后提供给你的秘钥
            string pfx = "./cfg/isas.pfx";
            var store = new X509Store(StoreName.AuthRoot, StoreLocation.LocalMachine);
            store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadWrite);
            var certificate = new X509Certificate2(pfx, "123456", X509KeyStorageFlags.Exportable | X509KeyStorageFlags.PersistKeySet);
            store.Add(certificate);
            store.Close();
            var certificateStoreName = store.Name;              //绑定的证书名称
            var certificateHash = certificate.GetCertHash();    //证书内容
            string bindingInformation = "*:" + port + ":" + bindingDomainName;

            Site site = iismanager.Sites.Add(webName,bindingInformation, physicalPath, certificateHash, certificateStoreName);
            return site;
        }
    }
}