using MoonExp.cs;
using MoonExp.Models;
using Npgsql;
using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Web;

namespace MoonExp
{
    public class Tools
    {
        /// <summary>
        /// 基础目录
        /// </summary>
        public static readonly string BaseDir = AppDomain.CurrentDomain.BaseDirectory;

        private static PostgreHelper _dbHelper;

        /// <summary>
        /// DB帮助类
        /// </summary>
        public static PostgreHelper DBHelper
        {
            get
            {
                if (null == _dbHelper)
                {
                    _dbHelper = new PostgreHelper();
                }

                return _dbHelper;
            }
        }

        /// <summary>
        /// 根据停牌获取用户ID
        /// </summary>
        public static int SelectUserIdByToken(string token)
        {
            string sql = "select create_user from lf.sys_token where token=@token order by create_time desc limit 1;";
            DbParameter dp1 = new NpgsqlParameter("@token", token);

            object obj = DBHelper.GetScalar(sql, dp1);

            return null == obj ? 0 : int.Parse(obj.ToString());
        }

        /// <summary>
        /// 执行CMD
        /// </summary>
        /// <param name="cmd">命令行</param>
        /// <param name="isPy">是否为QGIS Py脚本</param>
        /// <param name="isOut">是否输出错误</param>
        /// <returns>执行结果或出错信息</returns>
        public static string ExecCmd(string cmd, bool isPy = false, bool isOut = false)
        {
            List<string> list = new List<string>();
            if (isPy)
            {
                list.Add("cd \"C:\\Program Files\\QGIS 3.16\\apps\\Python37\"");
                list.Add("\"C:\\Program Files\\QGIS 3.16\\bin\\qgis_process-qgis-ltr.bat\"");
                //list.Add("\"C:\\Program Files\\QGIS 3.16\\bin\\python-qgis-ltr.bat\"");
                //list.Add("exit()");
            }
            list.Add(cmd);

            string str = ExecCmd(list, isOut);

            return str;
        }

        /// <summary>
        /// 执行CMD
        /// </summary>
        /// <param name="task">任务</param>
        /// <param name="list">命令集合</param>
        /// <param name="isOut">是否输出错误</param>
        /// <returns>执行结果或出错信息</returns>
        public static string ExecCmd(List<string> list, bool isOut = false)
        {
            string str;
            try
            {
                Process p = new Process();
                p.StartInfo.FileName = "cmd.exe";
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.CreateNoWindow = true;
                //p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = isOut;
                p.StartInfo.RedirectStandardError = true;
                p.Start();

                StreamWriter si = p.StandardInput; // 标准输入流 
                StreamReader so = isOut ? p.StandardOutput : null; // 标准输出流 
                StreamReader se = p.StandardError; // 标准错误流

                LogOut.Info("cmd = " + string.Join("，", list));
                si.AutoFlush = true;
                foreach (string cmd in list)
                {
                    si.WriteLine(cmd);
                }
                si.WriteLine("exit");

                string info = null == so ? null : so.ReadToEnd();
                str = se.ReadToEnd();

                //if (!string.IsNullOrEmpty(info)) LogOut.Debug(info);
                if (!string.IsNullOrEmpty(str) && !str.Contains("@jit(cache=True, nogil=True)")) LogOut.Error(str);
                if (p.HasExited == false) p.Kill();

                if (null != so) so.Close();
                se.Close();
                si.Close();
                p.Close();
            }
            catch (Exception ex)
            {
                LogOut.Error(ex.Message + "\r\n" + ex.StackTrace);
                str = ex.Message;
            }

            return str;
        }
    }
}