using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Command;
using HandyControl.Data;
using JiangsuEarthquake.Common;
using JiangsuEarthquake.DataAccess;
using JiangsuEarthquake.Models;
using JiangsuEarthquake.Views;
using JiangsuEarthquake.Views.UserControls;
using LiveCharts.Defaults;
using LiveCharts.Wpf;
using LiveCharts;
using MySql.Data.MySqlClient;
using Org.BouncyCastle.Utilities;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Threading;

namespace JiangsuEarthquake.ViewModels
{
    public class LogRecordViewModel : NotifyBase
    {

        #region Search Data
        private DateTime _startDateTime;

        public DateTime StartDateTime
        {
            get { return _startDateTime; }
            set { Set(ref _startDateTime, value); }
        }

        private DateTime _endDateTime;

        public DateTime EndDateTime
        {
            get { return _endDateTime; }
            set { Set(ref _endDateTime, value); }
        }

        int PageIndex = 0;

        private int recordCount;

        public int RecordCount
        {
            get { return recordCount; }
            set { recordCount = value; this.DoNotify(); }
        }

        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(); }
        }
        #endregion


        private ObservableCollection<LogRecordModel> logRecordList = new ObservableCollection<LogRecordModel>();

        public ObservableCollection<LogRecordModel> LogRecordList
        {
            get { return logRecordList; }
            set { logRecordList = value; this.DoNotify(); }
        }

        private ObservableCollection<LogRecordModel> totalLogRecordList = new ObservableCollection<LogRecordModel>();

        public ObservableCollection<LogRecordModel> TotalLogRecordList
        {
            get { return totalLogRecordList; }
            set { totalLogRecordList = value; this.DoNotify(); }
        }


        #region Data Filtering
        public static DialogViewModel vm;

        private bool _isChecked;

        public bool IsChecked
        {
            get { return _isChecked; }
            set
            {
                _isChecked = value;
                this.DoNotify();

                if (IsChecked)
                {
                    if (string.IsNullOrEmpty(EndDateTime.ToString()) || string.IsNullOrEmpty(StartDateTime.ToString()))
                    {
                        IsChecked = false;
                        return;
                    }

                    if (EndDateTime < StartDateTime)
                    {
                        HandyControl.Controls.Dialog.Show(new TextDialog("起始时间大于结束时间，\n请重新输入！"));
                        IsChecked = false;
                        //this.EndDateTime = DateTime.Now;
                        //this.StartDateTime = DateTime.Now.AddDays(-1);
                        return;
                    }

                    timeSearch = " and DataTime BETWEEN '" + StartDateTime + "' and '" + EndDateTime + "' ";
                }
                else
                {
                    timeSearch = "";
                }

                //设置当前页为1
                PageIndex = 1;

                TotalLogRecordList.Clear();
                LogRecordList.Clear();

                string sql = String.Format("select * from logrecordhis where StationID = {0} {1} ORDER by id desc limit 100", station_id, timeSearch);
                MySqlDataReader dataReader = DBHelper.ExecuteReader(sql, 1);
                int index = 1;
                while (dataReader.Read())
                {
                    LogRecordModel logRecord = new LogRecordModel();
                    logRecord.Index = index++;
                    logRecord.DataTime = Convert.ToDateTime(dataReader["DataTime"]);
                    logRecord.Remark = dataReader["Record"].ToString();
                    TotalLogRecordList.Add(logRecord);
                }
                dataReader.Dispose();

                RecordCount = index - 1;
                if (RecordCount <= 10)
                {
                    TotalPage = 1;

                    LogRecordList = TotalLogRecordList;
                }
                else
                {
                    TotalPage = (int)Math.Ceiling((double)RecordCount / 10);

                    for (int i = 0; i < 10; i++)
                    {
                        LogRecordList.Add(TotalLogRecordList[i]);
                    }
                }

                LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, PageIndex);
            }
        }
        #endregion


        #region CommandBase Define
        public CommandBase ForwordLogCommand { get; set; }  //读取日志信息

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

        public CommandBase RefreshDataCommand { get; set; }

        public CommandBase DownloadDataCommand { get; set; }
        #endregion


        int station_id = 1;

        string timeSearch = "";

        public DispatcherTimer timerDownloadDataMsgHidden = new DispatcherTimer();

        public LogRecordViewModel(int id)
        {
            // 默认查询1天内的日志
            this.EndDateTime = DateTime.Now;
            this.StartDateTime = DateTime.Now.AddDays(-1);

            PageIndex = 1;
            station_id = id;

            vm = new DialogViewModel
            {
                Content = ""
            };


            #region Command Set
            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);

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

            this.DownloadDataCommand = new CommandBase();
            this.DownloadDataCommand.DoExcute = new Action<object>(DownloadData);
            this.DownloadDataCommand.DoCanExcute = new Func<object, bool>((o) => true);
            #endregion


            timerDownloadDataMsgHidden.Interval = TimeSpan.FromSeconds(2);
            timerDownloadDataMsgHidden.Tick += TimerDownloadDataMsgHidden_Tick;
        }


        #region RefreshData
        public void RefreshData(object o)
        {
            if (IsChecked)
            {
                timeSearch = " and DataTime BETWEEN '" + StartDateTime + "' and '" + EndDateTime + "' ";
            }
            else
            {
                timeSearch = "";
            }

            //设置当前页为1
            PageIndex = 1;

            TotalLogRecordList.Clear();
            LogRecordList.Clear();

            string sql = String.Format("select * from logrecordhis where StationID = {0} {1} ORDER by id desc limit 100", station_id, timeSearch);
            MySqlDataReader dataReader = DBHelper.ExecuteReader(sql, 1);
            int index = 1;
            while (dataReader.Read())
            {
                LogRecordModel logRecord = new LogRecordModel();
                logRecord.Index = index++;
                logRecord.DataTime = Convert.ToDateTime(dataReader["DataTime"]);
                logRecord.Remark = dataReader["Record"].ToString();
                TotalLogRecordList.Add(logRecord);
            }
            dataReader.Dispose();

            RecordCount = index - 1;
            if (RecordCount <= 10)
            {
                TotalPage = 1;

                LogRecordList = TotalLogRecordList;
            }
            else
            {
                TotalPage = (int)Math.Ceiling((double)RecordCount / 10);

                for (int i = 0; i < 10; i++)
                {
                    LogRecordList.Add(TotalLogRecordList[i]);
                }
            }

            LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, PageIndex);
        }
        #endregion


        #region DownloadData
        private void TimerDownloadDataMsgHidden_Tick(object sender, EventArgs e)
        {
            DownloadDataMsgVisibility = Visibility.Hidden;

            // 停止定时器
            (sender as DispatcherTimer).Stop();
        }

        private string downloadDataMsg;

        public string DownloadDataMsg
        {
            get { return downloadDataMsg; }
            set { downloadDataMsg = value; this.DoNotify(); }
        }

        private Brush downloadDataMsgForeground;

        public Brush DownloadDataMsgForeground
        {
            get { return downloadDataMsgForeground; }
            set { downloadDataMsgForeground = value; this.DoNotify(); }
        }

        private bool downloadDataBtnIsEnabled = true;

        public bool DownloadDataBtnIsEnabled
        {
            get { return downloadDataBtnIsEnabled; }
            set { downloadDataBtnIsEnabled = value; this.DoNotify(); }
        }

        private Visibility downloadDataMsgVisibility = Visibility.Visible;

        public Visibility DownloadDataMsgVisibility
        {
            get { return downloadDataMsgVisibility; }
            set { downloadDataMsgVisibility = value; this.DoNotify(); }
        }

        public void DownloadData(object o)
        {
            DownloadDataBtnIsEnabled = false;
            DownloadDataMsgVisibility = Visibility.Visible;

            string baseStationFolder = Tools.GetAppSetting("LogRecordFolder");
            string savePath = CSVDownload.CreateFile(baseStationFolder, "LogRecord_" + DateTime.Now.ToString("yyyyMMddhhMMss"), "csv");

            bool result = CSVDownload.SaveLogRecordDataToCSVFile(TotalLogRecordList, savePath);
            if (result)
            {
                DownloadDataMsg = "下载数据成功！";
                DownloadDataMsgForeground = new SolidColorBrush(Colors.Green);
            }
            else
            {
                DownloadDataMsg = "下载数据失败！";
                DownloadDataMsgForeground = new SolidColorBrush(Colors.Red);
            }

            timerDownloadDataMsgHidden.Start();
            DownloadDataBtnIsEnabled = true;
        }
        #endregion


        #region Page Switching
        public void ForwordLog(object o)
        {
            if (PageIndex == 1)
                return;
            PageIndex -= 1;

            LogRecordList.Clear();
            for (int i = 0; i < 10; i++)
            {
                LogRecordList.Add(TotalLogRecordList[i + (PageIndex - 1) * 10]);
            }
            LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, PageIndex);
        }

        public void NextLog(object o)
        {
            if (PageIndex == TotalPage)
                return;
            PageIndex += 1;

            LogRecordList.Clear();
            for (int i = 0; i < (PageIndex == TotalPage ? (RecordCount - (PageIndex - 1) * 10) : 10); i++)
            {
                LogRecordList.Add(TotalLogRecordList[i + (PageIndex - 1) * 10]);
            }
            LogMsg = string.Format("共计{0}页，当前第{1}页", TotalPage, PageIndex);
        }
        #endregion 


    }
}