using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.ObjectModel;
using System.Windows.Input;
using Aitex.UI.Charting.Command;
using System.Windows;
using Aitex.UI.Charting.View;
using Aitex.UI.Charting.Model;

using System.Text.RegularExpressions;
using DataAnalysisControl.Core;


namespace Aitex.UI.Charting.ViewModel
{
    public class DataSourceSelectionViewModel : ChartingBaseViewModel
    {
        public DataSourceSelectionViewModel(DataSourceSelection view)
        {
            CommonViewModel = CommonViewModel.Instance;
            _view = view;

            //初始化各个对象
            RecipeSearch_ChamberList = new ObservableCollection<string>();
            RecipeSearch_ChamberList.Add("不限");
            foreach (var item in CONTEXT.GetRecipeChamberList())
                RecipeSearch_ChamberList.Add(item.Value);
            RecipeSearch_SelectedChamber = "不限";

            TimeSearch_ChamberList = new ObservableCollection<string>();
            foreach (var item in CONTEXT.GetChamberList())
                TimeSearch_ChamberList.Add(item.Value);
            TimeSearch_SelectedChamber = TimeSearch_ChamberList.First();

            RecipeSearch_UserDefinedIdList = new ObservableCollection<string>();
            RecipeSearch_RecipeNameList = new ObservableCollection<string>();
            RecipeSearch_SusceptorDescList = new ObservableCollection<string>();
            RecipeSearch_SusceptorData = new ObservableCollection<SusceptorDataModel>();

            RecipeSearch_BeginDate = RecipeSearch_BeginTime = DateTime.Now.Date - new TimeSpan(7, 0, 0, 0);
            TimeSearch_BeginDate = TimeSearch_BeginTime = DateTime.Now.Date;
            TimeSearch_EndDate = TimeSearch_EndTime = RecipeSearch_EndDate = RecipeSearch_EndTime = DateTime.Now.Date + new TimeSpan(23, 59, 59);            

            SearchRecipeHistoryCommand = new ChartingCommand((o) => true, (o) => SearchRecipeHistory(o));
            AddDataSourceByRecipeCommand = new ChartingCommand((o) => true, (o) => AddDataSource_ByRecipe(o));
            AddDataSourceByTimeCommand = new ChartingCommand((o) => true, (o) => AddDataSource_ByTime(o));

            //预先加载查询数据
            Preload_Information();
        }

        public DataSourceSelection _view;
        public CommonViewModel CommonViewModel { get; private set; }
        public ICommand SearchRecipeHistoryCommand { get; set; }
        public ICommand AddDataSourceByRecipeCommand { get; set; }
        public ICommand AddDataSourceByTimeCommand { get; set; }

        //select by recipe history
        public DateTime RecipeSearch_BeginDate { get; set; }
        public DateTime RecipeSearch_EndDate { get; set; }
        public DateTime RecipeSearch_BeginTime { get; set; }
        public DateTime RecipeSearch_EndTime { get; set; }

        public ObservableCollection<string> RecipeSearch_UserDefinedIdList { get; set; }
        public string RecipeSearch_SelectedUserDefinedId { get; set; }

        public ObservableCollection<string> RecipeSearch_SusceptorDescList { get; set; }
        public string RecipeSearch_SelectedSusceptorDesc { get; set; }

        public ObservableCollection<string> RecipeSearch_RecipeNameList { get; set; }
        public string RecipeSearch_SelectedRecipeName { get; set; }

        public ObservableCollection<string> RecipeSearch_ChamberList { get; set; }
        public string RecipeSearch_SelectedChamber { get; set; }

        public ObservableCollection<SusceptorDataModel> RecipeSearch_SusceptorData { get; set; }


        //select by customized time
        public DateTime TimeSearch_BeginDate { get; set; }
        public DateTime TimeSearch_EndDate { get; set; }
        public DateTime TimeSearch_BeginTime { get; set; }
        public DateTime TimeSearch_EndTime { get; set; }
        public ObservableCollection<string> TimeSearch_ChamberList { get; set; }
        public string TimeSearch_SelectedChamber { get; set; }

        long btBak;
        long etBak;
        /// <summary>
        /// 预设置数据，方便用户查询
        /// </summary>
        void Preload_Information()
        {
            //预加载数据功能如果放置于GUI线程执行，一旦数据查询缓慢，会影响到界面正常操作，
            //因此此处放置于单独线程中执行，在执行完毕后通知GUI更新数据
            Action act = new Action(() =>
            {
                string c1 = "";
                foreach (var item in CONTEXT.GetChamberList())
                {
                    if (item.Value == RecipeSearch_SelectedChamber)
                    {
                        c1 = item.Key;
                        break;
                    }
                }
                var bt = new DateTime(RecipeSearch_BeginDate.Year, RecipeSearch_BeginDate.Month, RecipeSearch_BeginDate.Day,
                    RecipeSearch_BeginTime.Hour, RecipeSearch_BeginTime.Minute, 0);
                var et = new DateTime(RecipeSearch_EndDate.Year, RecipeSearch_EndDate.Month, RecipeSearch_EndDate.Day,
                    RecipeSearch_EndTime.Hour, RecipeSearch_EndTime.Minute, 0);
                if (btBak != bt.Ticks || etBak != et.Ticks)
                {
                    RecipeSearch_SelectedRecipeName = "";
                    RecipeSearch_SelectedSusceptorDesc = "";
                    RecipeSearch_SelectedUserDefinedId = "";
                }
                var recipeName = RecipeSearch_SelectedRecipeName;
                var desc = RecipeSearch_SelectedSusceptorDesc;
                var userDefinedId = RecipeSearch_SelectedUserDefinedId;
                var data = GetSusceptorList(bt, et, c1, recipeName, desc, userDefinedId);

                //ObservableCollection must be modified by GUI thread
                _view.Dispatcher.Invoke(new Action<List<SusceptorDataModel>>((o) =>
                    {
                        if (btBak != bt.Ticks || etBak != et.Ticks)
                        {
                        RecipeSearch_UserDefinedIdList.Clear();
                        RecipeSearch_SusceptorDescList.Clear();
                        RecipeSearch_RecipeNameList.Clear();
                            btBak = bt.Ticks ;
                            etBak = et.Ticks;
                        }
                        RecipeSearch_SusceptorData.Clear();
                        foreach (var item in o)
                        {
                            if (!RecipeSearch_UserDefinedIdList.Contains(item.UserDefinedId)) RecipeSearch_UserDefinedIdList.Add(item.UserDefinedId);
                            if (!RecipeSearch_SusceptorDescList.Contains(item.Description)) RecipeSearch_SusceptorDescList.Add(item.Description);
                            if (!RecipeSearch_RecipeNameList.Contains(item.RecipeName)) RecipeSearch_RecipeNameList.Add(item.RecipeName);
                        
                            RecipeSearch_SusceptorData.Add(item);
                        }
                        InvokePropertyChanged();
                    }), data);
            });
            act.BeginInvoke(null, null);
        }


        /// <summary>
        /// 按照查询条件搜索菜单历史
        /// </summary>
        /// <param name="obj"></param>
        void SearchRecipeHistory(object obj)
        {
            Preload_Information();
        }

        /// <summary>
        /// 搜索数据源
        /// </summary>
        /// <param name="obj"></param>
        void AddDataSource_ByRecipe(object obj)
        {
            //speical code to get view's control information, for 'SelectedItems' in DataGrid cannot be binded with view model
            foreach (ChartingBaseViewModel.SusceptorDataModel item in _view.dataGrid_SusceptorList.SelectedItems)
            {
                var susceptorId = item.SusceptorId;
                var recipeRunGuid = item.RecipeRunGuid;
                var chamString = item.ProcessIn;
                //var chamString = "System";
                var beginTimeString = item.ProcessBeginTime.Replace("星期一","").Replace("星期二","").Replace("星期三","").Replace("星期四","").Replace("星期五","").Replace("星期六","").Replace("星期日","");
                var endTimeString = item.ProcessEndTime;
                DateTime beginTime, endTime;
                if (!DateTime.TryParse(beginTimeString, out beginTime)) continue;
                //if current recipe has no end time (maybe on running state), default set end time 12 hours later than begin time
                if (!DateTime.TryParse(endTimeString, out endTime)) endTime = beginTime + new TimeSpan(12, 0, 0);

                if (string.IsNullOrEmpty(chamString))
                {
                    continue;
                }
                string reason;
                List<string> dataList;
                Dictionary<string, Tuple<string, List<string>>> virtualDevices;
                ReadDbDataNameList(beginTime, chamString, out reason, out dataList, out virtualDevices);
                if (dataList == null || dataList.Count == 0)
                {
                    MessageBox.Show(string.Format("{0}在{1}没有数据记录，请重新选择数据源！", chamString, beginTime.ToString("yyyy/MM/dd")), "数据源选择警告", MessageBoxButton.OK, MessageBoxImage.Warning);
                    continue;
                }
                var singleDataSource = new PostgreSqlDataSource();
                singleDataSource.RecipeSteps = GetRecipeStepInfo(recipeRunGuid);
                singleDataSource.BeginTime = beginTime;
                singleDataSource.ChamberName = chamString;
                singleDataSource.Datas = new Dictionary<string, DataItem>();
                foreach (string dataName in dataList)
                {
                    if (!singleDataSource.Datas.ContainsKey(dataName))
                        singleDataSource.Datas.Add(dataName, new DataItem() { DataName = dataName, RawData = new List<float>(), TimeStamp = new List<DateTime>() });
                }
                //singleDataSource.AliasList = dataList;
                singleDataSource.VirtualDeviceTable = virtualDevices;
                singleDataSource.Description = item.Description; //_selectedDescription;//string.Format("{0}数据库文件,开始时间：{1}，结束时间：{2}", selectedCham, BeginTime, EndTime);
                singleDataSource.EndTime = endTime;
                var chamName = CONTEXT.GetChamberList()[chamString]; 
                string recipeName = item.RecipeName;
                //如果RecipeName以201XXXXXXXXXX_YYYY方式命名，此处自动缩减为*_YYYY方式显示，减少显示长度
                if (Regex.Match(recipeName, @"^\d\d\d\d\d\d\d\d\d\d\d\d\d\d_*").Success && recipeName.Length > 15)
                    recipeName = recipeName.Substring(15);
                singleDataSource.Title = string.Format("{0} {1}", chamName, recipeName);
                singleDataSource.TimeMove = new TimeSpan(0);
                singleDataSource.SyncPoint = singleDataSource.RecipeSteps.First();
                //SelectedDataSources.Add(singleDataSource);
                CommonViewModel.AddDataSource(singleDataSource);
            }
            _view.Close();
        }       

         /// <summary>
        /// 搜索数据源
        /// </summary>
        /// <param name="obj"></param>
        void AddDataSource_ByTime(object obj)
        {
            var beginTime = new DateTime(TimeSearch_BeginDate.Year, TimeSearch_BeginDate.Month, TimeSearch_BeginDate.Day,
                TimeSearch_BeginTime.Hour, TimeSearch_BeginTime.Minute, TimeSearch_BeginTime.Second);
            var endTime = new DateTime(TimeSearch_EndDate.Year, TimeSearch_EndDate.Month, TimeSearch_EndDate.Day,
                TimeSearch_EndTime.Hour, TimeSearch_EndTime.Minute, TimeSearch_EndTime.Second);
            var selectedCham = "";
            foreach (var item in CONTEXT.GetChamberList())
            {
                if (item.Value == TimeSearch_SelectedChamber)
                {
                    selectedCham = item.Key;
                    break;
                }
            }

            if (string.IsNullOrEmpty(selectedCham)) return;
            string reason;
            List<string> dataList;
            Dictionary<string, Tuple<string, List<string>>> virtualDevices;
            ReadDbDataNameList(beginTime, selectedCham, out reason, out dataList, out virtualDevices);
            if (dataList == null || dataList.Count == 0)
            {
                MessageBox.Show(string.Format("{0}在{1}没有数据记录，请重新选择数据源！", selectedCham, beginTime.ToString("yyyy/MM/dd")), "数据源选择警告", MessageBoxButton.OK, MessageBoxImage.Warning);
                return;
            }
            var singleDataSource = new PostgreSqlDataSource();
            singleDataSource.RecipeSteps = GetRecipeStepInfo(null);
            singleDataSource.BeginTime = beginTime;
            singleDataSource.ChamberName = selectedCham;
            singleDataSource.Datas = new Dictionary<string, DataItem>();
            foreach (string dataName in dataList)
                singleDataSource.Datas.Add(dataName, new DataItem() { DataName = dataName, RawData = new List<float>(), TimeStamp = new List<DateTime>() });
            //singleDataSource.AliasList = dataList;
            singleDataSource.VirtualDeviceTable = virtualDevices;
            singleDataSource.Description = "";//string.Format("{0}数据库文件,开始时间：{1}，结束时间：{2}", selectedCham, BeginTime, EndTime);
            singleDataSource.EndTime = endTime;

            var chamName = CONTEXT.GetChamberList()[selectedCham];// Aitex.DataAnalysisControl.Core.Converter.ToCstring((ChamberSet)Enum.Parse(typeof(ChamberSet), selectedCham));
            singleDataSource.Title = string.Format("{0} {1}", chamName, beginTime.ToString("MM-dd HH:mm"));
            singleDataSource.TimeMove = new TimeSpan(0);
            singleDataSource.SyncPoint = singleDataSource.RecipeSteps.First();
            //SelectedDataSources = new List<IDataSource>();
            //SelectedDataSources.Add(singleDataSource);
            CommonViewModel.AddDataSource(singleDataSource);
            _view.Close();
        }
    }
}