using AutomaticApp.Common;
using AutomaticApp.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace AutomaticApp.ViewModels
{
    /// <summary>
    /// 系统日志数据记录
    /// </summary>
    internal class LogViewModel : NotifyBase
    {
        string Save_Path = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"数据记录\";

        public static ErrorMessageModel ErrorMessageModel { get; set; } = new ErrorMessageModel();

        private DateTime selectedDate;

        public DateTime SelectedDate
        {
            get { return selectedDate; }
            set { selectedDate = value; this.DoNotify(); }
        }

        int pageNum = 0;

        List<string> logs = new List<string>();


        private int totalPage;

        public int TotalPage
        {
            get { return totalPage; }
            set { totalPage = value; this.DoNotify(); }
        }

        private string logMsg;

        public string LogMsg
        {
            get { return logMsg; }
            set { logMsg = value; this.DoNotify(); }
        }



        public CommandBase ReadTxtLogCommand { get; set; }//读取日志信息
        public CommandBase ForwordLogCommand { get; set; }//读取日志信息
        public CommandBase NextLogCommand { get; set; }//读取日志信息

        public LogViewModel()
        {
            SelectedDate = DateTime.Now;
            ReadTxtLog(null);

            this.ReadTxtLogCommand = new CommandBase();
            this.ReadTxtLogCommand.DoExcute = new Action<object>(ReadTxtLog);
            this.ReadTxtLogCommand.DoCanExcute = new Func<object, bool>((o) => true);

            this.ForwordLogCommand = new CommandBase();
            this.ForwordLogCommand.DoExcute = new Action<object>(ForwordLog);
            this.ForwordLogCommand.DoCanExcute = new Func<object, bool>((o) => true);

            this.NextLogCommand = new CommandBase();
            this.NextLogCommand.DoExcute = new Action<object>(NextLog);
            this.NextLogCommand.DoCanExcute = new Func<object, bool>((o) => true);
        }

        public void ReadTxtLog(object o)
        {
            //设置当前页为1
            pageNum = 1;
            logs = tools.ReadFromTXT("解析数据.txt", Save_Path + SelectedDate.ToString("yyyy_MM_dd") + @"\").Split("\r\n").ToList();
            ErrorMessageModel._MessageCon = "";
            if (logs.Count < 100)
            {
                TotalPage = 1;
                for (int i = 0; i < logs.Count; i++)
                {
                    ErrorMessageModel._MessageCon += logs[i] + "\r\n";
                }
            }
            else
            {
                TotalPage = (int)Math.Ceiling((double)logs.Count / 100);
                for (int i = 0; i < 100; i++)
                {
                    ErrorMessageModel._MessageCon += logs[i] + "\r\n";
                }
            }
            LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, pageNum);
        }

        public void ForwordLog(object o)
        {
            if (pageNum == 1)
                return;
            pageNum -= 1;
            ErrorMessageModel._MessageCon = "";
            for (int i = 0; i < 100; i++)
            {
                ErrorMessageModel._MessageCon += logs[i + (pageNum - 1) * 100] + "\r\n";
            }
            LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, pageNum);
        }

        public void NextLog(object o)
        {
            if (pageNum == Math.Ceiling((double)logs.Count / 100))
                return;
            pageNum += 1;
            ErrorMessageModel._MessageCon = "";
            for (int i = 0; i < ((pageNum == Math.Ceiling((double)logs.Count / 100)) ? (logs.Count - (pageNum - 1) * 100) : 100); i++)
            {
                ErrorMessageModel._MessageCon += logs[i + (pageNum - 1) * 100] + "\r\n";
            }
            LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, pageNum);
        }
    }
}