using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace SunlightAggregationManager.View
{
    /// <summary>
    /// logPage.xaml 的交互逻辑
    /// </summary>
    public partial class logPage : UserControl
    {
        public logPage()
        {
            InitializeComponent();
        }

        private readonly string Log_time = DateTime.Now.ToString("yyyy-MM-dd");
        DataTable logdataTable = new DataTable();   //建立缓存
        long TEXT_L;

        private void logPage_Loaded(object sender, RoutedEventArgs e)//页面打开事件
        {
            comboBox_log.ItemsSource = new string[3] { "Log", "ERR", "Exchange" };
            comboBox_log.Text = "Log";

            logdataTable.Columns.Add("Name", typeof(string));
            logdataTable.Columns.Add("Length", typeof(int));
            logdataTable.Columns.Add("CreationTimeUtc", typeof(string));
            logdataTable.Columns.Add("LastWriteTimeUtc", typeof(string));

            DirectoryInfo loginfo = new DirectoryInfo(System.Environment.CurrentDirectory + "\\Log"); //new文件夹
            logdataTable.Clear();
            foreach (var item in loginfo.GetFiles())
            {
                DataRow FileRow = logdataTable.NewRow();
                FileRow["Name"] = item.Name;
                FileRow["Length"] = item.Length / 1024;
                FileRow["CreationTimeUtc"] = item.CreationTimeUtc;
                FileRow["LastWriteTimeUtc"] = item.LastWriteTimeUtc;
                logdataTable.Rows.Add(FileRow);
            }
            logdataTable.DefaultView.Sort = "Name DESC";
            gridLog.ItemsSource = logdataTable.DefaultView.ToTable().DefaultView;
        }

        private void LOG_file()//建立列表
        {
            DirectoryInfo loginfo = new DirectoryInfo(System.Environment.CurrentDirectory + "\\" + comboBox_log.Text); //new文件夹
            logdataTable.Clear();
            foreach (var item in loginfo.GetFiles())
            {
                DataRow FileRow = logdataTable.NewRow();
                FileRow["Name"] = item.Name;
                FileRow["Length"] = item.Length / 1024;
                FileRow["CreationTimeUtc"] = item.CreationTimeUtc;
                FileRow["LastWriteTimeUtc"] = item.LastWriteTimeUtc;
                logdataTable.Rows.Add(FileRow);
            }
            logdataTable.DefaultView.Sort = "Name DESC";
            gridLog.ItemsSource = logdataTable.DefaultView.ToTable().DefaultView;
        }

        private void DataGrid_gridLogClick(object sender, MouseButtonEventArgs e)//数据表双击事件
        {
            int rownum = gridLog.SelectedIndex;//获取鼠标选中行并定义变量
            if (rownum != -1)//判断鼠标定位是否有效            
            {
                /*定位选中行及指定列单元格文本信息*/
                //获取单元格内容
                var cellContent = gridLog.Columns[0].GetCellContent(gridLog.Items[rownum]);
                //安全转换为 TextBlock 并获取文本
                var textValue = (cellContent as TextBlock)?.Text;
                if (!string.IsNullOrEmpty(textValue))
                {
                    LOGDATA_file(textValue);//
                }
                
                var Content_L = gridLog.Columns[1].GetCellContent(gridLog.Items[rownum]);
                var Value_L = (Content_L as TextBlock)?.Text.ToString();
                if (!string.IsNullOrEmpty(Value_L))
                {
                    TEXT_L = long.Parse(Value_L) * 1024 + 1024;
                }
            }
        }

        /// <summary>
        /// 读取文件显示到前端
        /// 调用示例：  LOGDATA_file（file path）;
        /// </summary>
        /// <param name="path">文件路径</param>
        private async void LOGDATA_file(string dat) //读取文件显示到前端
        {
            Logtext.SelectAll();
            Logtext.Cut();
            Logtext.Document = new FlowDocument();
            string filePath = System.Environment.CurrentDirectory + "\\" + comboBox_log.Text + "\\";
            try
            {
                Logtext.AppendText("Loading...");
                string log_ = "";
                string log_DAT = await Task<string>.Run(() =>
                {
                    // 使用StreamReader读取文件
                    using (StreamReader reader = new StreamReader(filePath + dat))
                    {
                        // 读取文件直到文件的末尾      
                        while (!reader.EndOfStream)
                        {
                            // 添加文件的每一行到RichTextBox                 
                            log_ = log_ + reader.ReadLine() + "\n";
                        }
                    }
                    return log_;
                });
                Logtext.SelectAll();
                Logtext.Cut();
                Logtext.AppendText(log_DAT);
            }
            catch (Exception ex)
            {
                // 处理可能发生的任何异常
                MessageBox.Show("Error reading file: " + ex.Message);
            }
        }

        private void comboBox_log_DropDownClosed(object sender, EventArgs e)
        {
            LOG_file();
        }
    }
}