using CnasSynchronousCommon;
using CnasSynchronusClient;
using CnasSynchrousModel;
using Microsoft.Win32;
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration.Install;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Windows.Forms;
using System.Xml.Serialization;

namespace CNAS_DBSync
{
    public partial class frmServiceConfig : Form
    {
        ServiceConfig serviceConfig = new ServiceConfig();
        public frmServiceConfig()
        {
            InitializeComponent();
        }

        private void frmServiceConfig_Load(object sender, EventArgs e)
        {
            //1.读取本地配置文件，填充上次配置时间
            try
            {
                XmlSerializer serializer = new XmlSerializer(serviceConfig.GetType());
                FileStream stream = new FileStream(FileHelper.getBasePath() + "/DataConfig/SyncServiceData.xml", FileMode.Open);
                serviceConfig = (ServiceConfig)serializer.Deserialize(stream);
                stream.Close();

                this.numService.Value = serviceConfig.Minutes;
                this.dtpSource.Value = serviceConfig.InitalDT;

                this.cbxAutoStart.Checked = getServiceStartType("SyncService") == 2 ? true : false;
            }
            catch (Exception ex)
            {
                AppLog.Error(ex.Message);
            }
            //2.检查本地是否存在已经启动的服务，初始化btn的显示
            string strMsg = IfStartService();
            switch (strMsg)
            {
                case "1":    
                    btnInstallService.Text = "安装服务";
                    btnRun.Text = "启动服务";
                    this.numService.Enabled = true;
                    break;
                case "2":
                    btnInstallService.Text = "卸载服务";
                    btnRun.Text = "启动服务";
                    this.numService.Enabled = true;                 
                    break;
                case "3":
                    btnInstallService.Text = "卸载服务";
                    btnRun.Text = "停止服务";
                    this.numService.Enabled = false;
                    break;
            }
        }

        private string IfStartService()
        {
            ServiceController[] service = ServiceController.GetServices();
            string strMsg = "1";
            for (int i = 0; i < service.Length; i++)
            {
                if (service[i].DisplayName.ToUpper().Equals("SyncService".ToUpper()))
                {
                    strMsg = "2";
                    if (service[i].Status == ServiceControllerStatus.Running)
                    {
                        strMsg = "3";
                        break;
                    }
                }
            }
            return strMsg;
        }

        private void btnRun_Click(object sender, EventArgs e)
        {
            if (btnRun.Text == "启动服务")  //此时启动服务
            {
                if (this.numService.Value < 1)
                {
                    MessageBox.Show("服务至少每隔1分钟执行");
                    return;
                }
                serviceConfig.Minutes = (Int32)this.numService.Value;              

                serviceConfig.InitalDT = this.dtpSource.Value;
                //修改服务为开启启动
                if(cbxAutoStart.Checked)
                    ChangeServiceStartType(2, "SyncService");
                if (StartService())
                {
                    SaveServiceConfig(serviceConfig);  //存储配置文件
                    btnRun.Text = "停止服务";
                }
                else
                {
                    MessageBox.Show("启动服务失败！");
                }
            }
            else  //此时停止服务
            {
                if (StopService())
                {
                    if (cbxAutoStart.Checked)
                    {
                        ChangeServiceStartType(3, "SyncService");
                        cbxAutoStart.Checked = false;
                    }
                    btnRun.Text = "启动服务";
                }
                else
                {
                    MessageBox.Show("停止服务失败！");
                }
            }
        }
        private bool StartService()
        {
            bool bIfSuccess = true;
            try
            {
                ServiceController serviceController = new ServiceController("SyncService");
                serviceController.Start();
                serviceController.WaitForStatus(ServiceControllerStatus.Running);
                serviceController.Close();
            }
            catch (Exception ex)
            {
                bIfSuccess = false;
                AppLog.Error(ex.Message);
            }
            return bIfSuccess;
        }
        private bool StopService()
        {
            bool bIfSuccess = true;
            try
            {
                ServiceController serviceController = new ServiceController("SyncService");
                serviceController.Stop();
                serviceController.WaitForStatus(ServiceControllerStatus.Stopped);
                serviceController.Close();
            }
            catch (Exception ex)
            {
                bIfSuccess = false;
                AppLog.Error(ex.Message);
            }
            return bIfSuccess;
        }

        private void SaveServiceConfig(ServiceConfig config)
        {
            try
            {
                XmlSerializer serializer = new XmlSerializer(config.GetType());
                TextWriter writer = new StreamWriter(FileHelper.getBasePath() + "/DataConfig/SyncServiceData.xml");
                serializer.Serialize(writer, config);
                writer.Close();
            }
            catch (Exception ex)
            {
                AppLog.Error(ex.Message);
            }
        }

        /// <summary>    
        /// 修改服务的启动项 2为自动,3为手动    
        /// </summary>    
        /// <param name="startType"></param>    
        /// <param name="serviceName"></param>    
        /// <returns></returns>    
        public static bool ChangeServiceStartType(int startType, string serviceName)
        {
            try
            {
                RegistryKey regist = Registry.LocalMachine;
                RegistryKey sysReg = regist.OpenSubKey("SYSTEM");
                RegistryKey currentControlSet = sysReg.OpenSubKey("CurrentControlSet");
                RegistryKey services = currentControlSet.OpenSubKey("Services");
                RegistryKey servicesName = services.OpenSubKey(serviceName, true);
                servicesName.SetValue("Start", startType);
            }
            catch (Exception ex)
            {
                AppLog.Error(ex.Message);
                return false;
            }
            return true;
        }

        /// <summary>
        /// 获取服务启动类型
        /// </summary>
        /// <param name="serviceName"></param>
        /// <returns></returns>
        public static int getServiceStartType(string serviceName)
        {
            int startType = 0;
            try
            {
                RegistryKey regist = Registry.LocalMachine;
                RegistryKey sysReg = regist.OpenSubKey("SYSTEM");
                RegistryKey currentControlSet = sysReg.OpenSubKey("CurrentControlSet");
                RegistryKey services = currentControlSet.OpenSubKey("Services");
                RegistryKey servicesName = services.OpenSubKey(serviceName, true);
                if(servicesName != null)
                    startType=(int)servicesName.GetValue("Start");
            }
            catch (Exception ex)
            {
                AppLog.Error(ex.Message);
                return 0;
            }
            return startType;
        }

        private void btnInstallService_Click(object sender, EventArgs e)
        {
            string serviceFilePath = FileHelper.getBasePath() + @"\CNAS_SyncService.exe";
            if (btnInstallService.Text == "安装服务")
            {
                if (InstallService(serviceFilePath))
                {
                    btnInstallService.Text = "卸载服务";
                }
                else
                {
                    MessageBox.Show("安装服务失败。");
                }
            }
            else if (btnInstallService.Text == "卸载服务")
            {
                if (UninstallService(serviceFilePath))
                {
                    btnInstallService.Text = "安装服务";
                    btnRun.Text = "启动服务";
                }
                else
                {
                    MessageBox.Show("卸载服务失败。");
                }
            }
        }

        /// <summary>
        /// 安装服务
        /// </summary>
        /// <param name="serviceFilePath"></param>
        private bool InstallService(string serviceFilePath)
        {
            bool bIfSuccess = true;
            try
            {
                using (AssemblyInstaller installer = new AssemblyInstaller())
                {
                    installer.UseNewContext = true;
                    installer.Path = serviceFilePath;
                    IDictionary savedState = new Hashtable();
                    installer.Install(savedState);
                    installer.Commit(savedState);
                }
            }
            catch (Exception ex)
            {
                bIfSuccess = false;
                AppLog.Error(ex.Message);
            }
            return bIfSuccess;
        }

        /// <summary>
        /// 卸载服务
        /// </summary>
        /// <param name="serviceFilePath"></param>
        private bool UninstallService(string serviceFilePath)
        {
            bool bIfSuccess = true;
            try
            {
                using (AssemblyInstaller installer = new AssemblyInstaller())
                {
                    installer.UseNewContext = true;
                    installer.Path = serviceFilePath;
                    installer.Uninstall(null);
                }
            }
            catch (Exception ex)
            {
                bIfSuccess = false;
                AppLog.Error(ex.Message);
            }
            return bIfSuccess;
        }
    }
}