using System;
using System.Collections.Generic;
using System.Data;
using System.Data.OleDb;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using DotNettyFrom.util;

namespace DotNettyFrom.excel
{
    public class ExcelHelper
    {
        private string excelConn = "Provider = Microsoft.ACE.OLEDB.12.0;Data Source = ";

        private RichTextBox richTextBox;

        private List<WvBean> excelList = new List<WvBean>();

        public ExcelHelper(string excelPath, RichTextBox richTextBox)
        {
            this.richTextBox = richTextBox;
            excelConn += excelPath + ";Extended Properties='Excel 12.0; HDR=NO; IMEX=1'";
        }

        public List<WvBean> GetExcelList()
        {
            return excelList;
        }

        public ExcelHelper LoadExcelFile()
        {
            using (OleDbConnection conn = new OleDbConnection(excelConn))
            {
                conn.Open();
                DataSet dataSet = new DataSet();

                try
                {
                    OleDbDataAdapter odda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", conn);
                    odda.Fill(dataSet, "Sheet1$");

                    if (dataSet.Tables.Count > 0)
                    {
                        DataTable dt = dataSet.Tables[0];

                        int hang = dt.Rows.Count;

                        excelList.Clear();

                        for (int i = 1; i < hang; i++)
                        {
                            WvBean wb = null;
                            try
                            {
                                int myIndex = int.Parse(dt.Rows[i][0] + "");
                                string myId = CmdUtil.FrontWithZero(CmdUtil.Dec2Hex(myIndex), 4);
                                string idInfo = dt.Rows[i][1].ToString().Trim();
                                string len = dt.Rows[i][2].ToString().Trim();
                                string mode = dt.Rows[i][3].ToString().Trim();
                                string desp = dt.Rows[i][4].ToString().Trim();
                                string defaultValue = dt.Rows[i][5].ToString().Trim();
                                string remark = dt.Rows[i][6].ToString().Trim();

                                if (len.Equals("") || mode.Equals("") || defaultValue.Equals(""))
                                {
                                    richTextBox.Text += "第" + i + "行;长度,模式,默认值不能为空\n";
                                    continue;
                                }

                                wb = new WvBean();
                                wb.index = myIndex;
                                wb.myId = myId;
                                wb.idInfo = idInfo;
                                wb.len = len;
                                wb.mode = mode;
                                wb.desp = desp;
                                wb.defalutValue = defaultValue;
                                wb.userValue = defaultValue;
                                wb.remark = remark;
                                excelList.Add(wb);
                            }
                            catch (Exception exception)
                            {
                                richTextBox.Text += "第" + i + "行;" + exception.Message + "\n";
                                Console.WriteLine(exception);
                            }
                        }
                    }
                }
                catch (Exception exception)
                {
                    Console.WriteLine(exception.Message);
                    richTextBox.Text = "请确定Excel表名为\"Sheet1\"\n" + exception.Message + "\n";
                }
            }
            return this;
        }
    }
}