using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Input;
using Aitex.UI.Charting.Model;
using Aitex.UI.Charting.ViewModel;

using System.Windows;
using DataAnalysisControl.Core;

namespace Aitex.UI.Charting.Command
{
    public class AddDataSourceCommand : ICommand
    {
        public AddDataSourceCommand(IDataSource dataSource)
        {
            _dataSource = dataSource;
        }

        IDataSource _dataSource;

        public bool CanExecute(object parameter)
        {
            return true;
        }

#pragma warning disable 0067
        public event EventHandler CanExecuteChanged;
#pragma warning restore 0067
        private void AsyncShowWarningMessageBox(string message, string title)
        {
            Application.Current.Dispatcher.BeginInvoke(new Action(() => MessageBox.Show(message, title, MessageBoxButton.OK, MessageBoxImage.Warning)));
        }

        public void Execute(object parameter)
        {
            string reason = string.Empty;
            try
            {
                var commonViewModel = (CommonViewModel)parameter;
                if (commonViewModel.DataSources.ContainsKey(_dataSource.Title))
                {
                    if (_dataSource.BeginTime == commonViewModel.DataSources[_dataSource.Title].BeginTime &&
                        _dataSource.EndTime == commonViewModel.DataSources[_dataSource.Title].EndTime)
                    {
                        reason = string.Format("数据名 \"{0}\" 已存在，未添加到数据源列表中...\n", _dataSource.Title);
                        CONTEXT.WriteLog(reason);
                        AsyncShowWarningMessageBox(reason, "警告");
                        return;
                    }
                    else
                    {
                        //Recipe name相同，炉次不同，默认在数据源后补上1,2,3,4后缀以示区别
                        for (int postNum = 1; postNum < 100; postNum++)
                        {
                            string newDsName = string.Format("{0}({1})", _dataSource.Title, postNum);
                            if (!commonViewModel.DataSources.ContainsKey(newDsName))
                            {
                                _dataSource.Title = newDsName;
                                break;
                            }
                        }
                    }
                }
                commonViewModel.DataSources.Add(_dataSource.Title, _dataSource);
                commonViewModel.CurrentSelectedDataSource = _dataSource;

                commonViewModel.InvokePropertyChanged();
            }
            catch (Exception ex)
            {
                CONTEXT.WriteLog(ex);
                AsyncShowWarningMessageBox(string.Format("添加数据源{0}发生错误：\n{1}", _dataSource.Title, ex.Message), "警告");
            }
        }
    }
}