using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading;

namespace Vinno.FIS.Sonopost.Common
{
    public class ProcessHelper
    {
        /// <summary>
        /// 开启进程
        /// </summary>
        /// <param name="processPath"></param>
        /// <param name="args"></param>
        /// <returns></returns>
        public static int StartProcess(string processPath, string args = "")
        {
            if (!File.Exists(processPath))
            {
                return 0;
            }

            int retryCount = 0;
            int processId;
            bool exist;
            do
            {
                var p = new Process
                {
                    StartInfo =
                    {
                        FileName = processPath,
                        CreateNoWindow = true,
                        WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory,
                        UseShellExecute = false,
                        WindowStyle = ProcessWindowStyle.Hidden,
                        RedirectStandardInput = true,
                        Verb = "runas",
                        Arguments = args
                    }
                };

                p.Start();
                processId = p.Id;
                var existApp = IsProcessExist(processId);
                exist = existApp != null;
                if (exist == false && retryCount < 5)
                {
                    retryCount++;
                    Thread.Sleep(1000);
                }
            } while (exist == false);
            return processId;
        }

        /// <summary>
        /// 结束进程
        /// </summary>
        /// <param name="processId"></param>
        /// <returns></returns>
        public static bool FinishProcess(int processId)
        {
            int count = 10;
            while (count > 0)
            {
                var existApp = IsProcessExist(processId);
                if (existApp != null)
                {
                    count--;
                    try
                    {
                        existApp.Kill();
                    }
                    catch
                    {
                    }
                    Thread.Sleep(100);
                }
                else
                {
                    return true;
                }
            }
            return false;
        }

        /// <summary>
        /// 结束所有这名称进程
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static bool FinishProcessByName(string processName)
        {
            int count = 10;
            while (count > 0)
            {
                var existApps = Process.GetProcessesByName(processName).Where(x => x.ProcessName == processName);
                if (!existApps.Any())
                {
                    return true;
                }
                foreach (var item in existApps)
                {
                    try
                    {
                        item.Kill();
                    }
                    catch
                    {
                    }
                    Thread.Sleep(100);
                }
                count--;
            }
            return false;
        }

        /// <summary>
        /// 检查进程是否存在
        /// </summary>
        /// <param name="processId"></param>
        /// <returns></returns>
        public static Process IsProcessExist(int processId)
        {
            try
            {
                var existApp = Process.GetProcessById(processId);
                if (existApp != null)
                {
                    return existApp;
                }
            }
            catch (ArgumentException)
            {
                //ignore
            }
            return null;
        }

        /// <summary>
        /// 检查进程是否存在
        /// </summary>
        /// <param name="processName"></param>
        /// <returns></returns>
        public static bool IsProcessExistByName(string processName)
        {
            return Process.GetProcessesByName(processName).Any(x => x.ProcessName == processName);
        }

        /// <summary>
        /// 根据进程名得到唯一的进程Id
        /// </summary>
        /// <param name="processName"></param>
        /// <returns></returns>
        public static int GetProcessIdByName(string processName)
        {
            var existProcesses = Process.GetProcessesByName(processName).Where(x => x.ProcessName == processName);
            if (existProcesses.Count() == 1)
            {
                return existProcesses.FirstOrDefault().Id;
            }
            else
            {
                return 0;
            }
        }
    }
}