using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using Excel = Microsoft.Office.Interop.Excel;
using System.Reflection;
namespace NewsCrawler
{
	public class ExcelHandler
	{
		bool m_bAvailable = false;
		string m_strFileName = "";
		string m_strToday = DateTime.Now.ToString("yyyy-MM-dd");
		Excel.Application m_App = null;

		public ExcelHandler(string strFileName)
		{
			m_App = new Excel.Application();
			if(m_App == null)
			{
				Util.Log(Util.LOG_TYPE.ERROR, "엑셀이 설치되지 않음");
				m_bAvailable = false;
				return;
			}

			m_strFileName = strFileName;
		}

		~ExcelHandler()
		{
			Marshal.ReleaseComObject(m_App);
		}

		public bool IsAvailable()
		{
			return m_bAvailable;
		}

		private void Create()
		{
			Excel._Workbook Workbook = m_App.Workbooks.Add(Missing.Value);
			Excel._Worksheet Worksheet = Workbook.ActiveSheet;

			Worksheet.Cells[1, 1] = "날짜";
			Worksheet.Cells[1, 2] = "기사 시간";
			Worksheet.Cells[1, 3] = "받은 시간";
			Worksheet.Cells[1, 4] = "출처";
			Worksheet.Cells[1, 5] = "제목";
			Worksheet.Cells[1, 6] = "요청 시간";
			Worksheet.Cells[1, 7] = "시가";
			Worksheet.Cells[1, 8] = "저가";
			Worksheet.Cells[1, 9] = "대비";
			Worksheet.Cells[1, 10] = "고가";
			Worksheet.Cells[1, 11] = "대비";
			Worksheet.Cells[1, 12] = "링크";

			Workbook.SaveAs(m_strFileName, Excel.XlFileFormat.xlOpenXMLWorkbook, Missing.Value,
				Missing.Value, false, false, Excel.XlSaveAsAccessMode.xlNoChange,
				Excel.XlSaveConflictResolution.xlUserResolution, true,
				Missing.Value, Missing.Value, Missing.Value);
			Workbook.Close();
		}

		public void AddRow(string strNewsTime, string strResTime, string strRef, string strTitle, float fReqTime, int iPriceS, int iPriceLow, float fPriceLowP, int iPriceHigh, float fPriceHighP, string strLink)
		{
			if(m_bAvailable == false)
				return;

			if(File.Exists(m_strFileName) == false)
				Create();


			Excel._Workbook Workbook = m_App.Workbooks.Open(m_strFileName);
			Excel._Worksheet Worksheet = Workbook.ActiveSheet;

			int iRow = Worksheet.Cells.SpecialCells(Excel.XlCellType.xlCellTypeLastCell, Type.Missing).Row+1;
			Worksheet.Cells[iRow, 1] = m_strToday;
			Worksheet.Cells[iRow, 2] = strNewsTime;
			Worksheet.Cells[iRow, 3] = strResTime;
			Worksheet.Cells[iRow, 4] = strRef;
			Worksheet.Cells[iRow, 5] = strTitle;
			Worksheet.Cells[iRow, 6] = fReqTime;
			Worksheet.Cells[iRow, 7] = iPriceS;
			Worksheet.Cells[iRow, 8] = iPriceLow;
			Worksheet.Cells[iRow, 9] = fPriceLowP;
			Worksheet.Cells[iRow, 10] = iPriceHigh;
			Worksheet.Cells[iRow, 11] = fPriceHighP;
			Worksheet.Cells[iRow, 12] = strLink;

			Workbook.Save();
			Workbook.Close();
		}
	}
}