using System;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;
using System.IO;

public class Excel
{
    public HSSFWorkbook WorkBook
    {
        get;
        set;
    }

    public HSSFSheet Sheet
    {
        get;
        set;
    }

    /// <summary>
    /// 建立或取得指定行列的儲存格
    /// </summary>
    /// <param name="row">列</param>
    /// <param name="col">行</param>
    /// <returns></returns>
    public ICell Cell(int row, int col)
    {
        if (Sheet.GetRow(row) == null)
            Sheet.CreateRow(row);
        if (Sheet.GetRow(row).GetCell(col) == null)
            Sheet.GetRow(row).CreateCell(col);
        return Sheet.GetRow(row).GetCell(col);
    }

    public string RCtoA1(int row, int col)
    {
        string colX;

        if (col <= 25)
            colX = Char.ConvertFromUtf32(65 + col);
        else
        {
            col = col - 26;
            colX = Char.ConvertFromUtf32(65 + (int)(col / 26)) + Char.ConvertFromUtf32(65 + (col % 26));
        }

        return String.Format("{0}{1}", colX, row + 1);
    }

    /// <summary>
    /// 建立新字體
    /// </summary>
    public IFont NewFont(string fontName)
    {
        return NewFont(fontName, 9, FontBoldWeight.Normal, HSSFColor.COLOR_NORMAL);
    }

    /// <summary>
    /// 建立新字體
    /// </summary>
    public IFont NewFont(string fontName, short fontSize)
    {
        return NewFont(fontName, fontSize, FontBoldWeight.Normal, HSSFColor.COLOR_NORMAL);
    }

    /// <summary>
    /// 建立新字體
    /// </summary>
    public IFont NewFont(string fontName, short fontSize, FontBoldWeight fontWeight)
    {
        return NewFont(fontName, fontSize, fontWeight, HSSFColor.COLOR_NORMAL);
    }

    /// <summary>
    /// 建立新字體
    /// </summary>
    public IFont NewFont(string fontName, short fontSize, FontBoldWeight fontWeight, short color)
    {
        IFont result = WorkBook.CreateFont();    // 抬頭字體
        result.FontName = fontName;
        result.FontHeightInPoints = fontSize;
        result.Boldweight = (short)fontWeight;
        result.Color = color;
        return result;
    }

    /// <summary>
    /// 建立新樣式
    /// </summary>
    public ICellStyle NewCellStyle(IFont font, HorizontalAlignment align, VerticalAlignment valign, bool warpText)
    {
        ICellStyle style = WorkBook.CreateCellStyle();
        style.SetFont(font);
        style.Alignment = align;
        style.VerticalAlignment = valign;
        style.WrapText = warpText;
        return style;
    }

    /// <summary>
    /// 合併儲存格
    /// </summary>
    public void MergeCell(int row1, int col1, int row2, int col2)
    {
        // 建立範圍內所有儲存格
        for (int row = row1; row <= row2; row++)
            for (int col = col1; col <= col2; col++)
                Cell(row, col);

        CellRangeAddress region = new CellRangeAddress(row1, row2, col1, col2); // Region.ConvertToCellRangeAddress(new Region(row1, col1, row2, col2));
        Sheet.AddMergedRegion(region);
    }

    /// <summary>
    /// 合併儲存格，並設定合併後的邊框樣式
    /// </summary>
    public void MergeCell(int row1, int col1, int row2, int col2, BorderStyle bordertype)
    {
        // 建立範圍內所有儲存格
        for (int row = row1; row <= row2; row++)
            for (int col = col1; col <= col2; col++)
                Cell(row, col);

        CellRangeAddress region = new CellRangeAddress(row1, row2, col1, col2); //Region.ConvertToCellRangeAddress(new Region(row1, col1, row2, col2));
        Sheet.AddMergedRegion(region);
        SetRangeOuterBorder(region, bordertype);
    }

    /// <summary>
    /// 設定單一儲存格的邊框樣式
    /// </summary>
    public void SetCellBorder(int row, int col, BorderStyle bordertype)
    {
        CellRangeAddress region = new CellRangeAddress(row, row, col, col);
        HSSFRegionUtil.SetBorderTop(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderLeft(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderBottom(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderRight(bordertype, region, Sheet as HSSFSheet, WorkBook);
    }

    /// <summary>
    /// 設定一個儲存格範圍的外圍邊框樣式
    /// </summary>
    public void SetRangeOuterBorder(int row1, int col1, int row2, int col2, BorderStyle bordertype)
    {
        CellRangeAddress region = new CellRangeAddress(row1, row2, col1, col2);
        HSSFRegionUtil.SetBorderTop(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderLeft(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderBottom(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderRight(bordertype, region, Sheet as HSSFSheet, WorkBook);
    }

    /// <summary>
    /// 設定一個儲存格範圍的外圍邊框樣式
    /// </summary>
    public void SetRangeOuterBorder(int row1, int col1, int row2, int col2, BorderStyle bordertypeTop, BorderStyle bordertypeLeft, BorderStyle bordertypeBottom, BorderStyle bordertypeRight)
    {
        CellRangeAddress region = new CellRangeAddress(row1, row2, col1, col2);
        HSSFRegionUtil.SetBorderTop(bordertypeTop, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderLeft(bordertypeLeft, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderBottom(bordertypeBottom, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderRight(bordertypeRight, region, Sheet as HSSFSheet, WorkBook);
    }

    /// <summary>
    /// 設定一個儲存格範圍的外圍邊框樣式
    /// </summary>
    public void SetRangeOuterBorder(CellRangeAddress region, BorderStyle bordertype)
    {
        HSSFRegionUtil.SetBorderTop(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderLeft(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderBottom(bordertype, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderRight(bordertype, region, Sheet as HSSFSheet, WorkBook);
    }

    /// <summary>
    /// 設定一個儲存格範圍的外圍邊框樣式
    /// </summary>
    public void SetRangeOuterBorder(CellRangeAddress region, BorderStyle bordertypeTop, BorderStyle bordertypeLeft, BorderStyle bordertypeBottom, BorderStyle bordertypeRight)
    {
        HSSFRegionUtil.SetBorderTop(bordertypeTop, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderLeft(bordertypeLeft, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderBottom(bordertypeBottom, region, Sheet as HSSFSheet, WorkBook);
        HSSFRegionUtil.SetBorderRight(bordertypeRight, region, Sheet as HSSFSheet, WorkBook);
    }

    /// <summary>
    /// 設定一個儲存格範圍的內部格線樣式 (慢，建議僅使用於小範圍！)
    /// </summary>
    public void SetRangeInnerGrid(int row1, int col1, int row2, int col2, BorderStyle bordertype)
    {
        /*
        CellRangeAddress region = new CellRangeAddress(row1, row2, col1, col2);
        Sheet.SetEnclosedBorderOfRegion(region, bordertype, HSSFColor.COLOR_NORMAL);
        */

        for (int col = col1; col <= col2; col++)
        {
            SetRangeOuterBorder(row1, col, row2, col, bordertype);
        }
        for (int row = row1; row <= row2; row++)
        {
            SetRangeOuterBorder(row, col1, row, col2, bordertype);
        }
    }

    public void SetCellStyle(int row, int col, ICellStyle style)
    {
        Cell(row, col).CellStyle = style;
    }

    public void SetCellValue(int row, int col, bool value, ICellStyle style)
    {
        Cell(row, col).SetCellValue(value);
        Cell(row, col).CellStyle = style;
    }

    public void SetCellValue(int row, int col, DateTime value, ICellStyle style)
    {
        Cell(row, col).SetCellValue(value);
        Cell(row, col).CellStyle = style;
    }

    public void SetCellValue(int row, int col, double value, ICellStyle style)
    {
        Cell(row, col).SetCellValue(value);
        Cell(row, col).CellStyle = style;
    }

    public void SetCellValue(int row, int col, IRichTextString value, ICellStyle style)
    {
        Cell(row, col).SetCellValue(value);
        Cell(row, col).CellStyle = style;
    }

    public void SetCellValue(int row, int col, string value, ICellStyle style)
    {
        Cell(row, col).SetCellValue(value);
        Cell(row, col).CellStyle = style;
    }

    public void SetCellValue(int row, int col, bool value)
    {
        Cell(row, col).SetCellValue(value);
    }

    public void SetCellValue(int row, int col, DateTime value)
    {
        Cell(row, col).SetCellValue(value);
    }

    public void SetCellValue(int row, int col, double value)
    {
        Cell(row, col).SetCellValue(value);
    }

    public void SetCellValue(int row, int col, IRichTextString value)
    {
        Cell(row, col).SetCellValue(value);
    }

    public void SetCellValue(int row, int col, string value)
    {
        Cell(row, col).SetCellValue(value);
    }

    public void SetCellFormula(int row, int col, string formula)
    {
        Cell(row, col).CellFormula = formula;
    }

    public void SetCellFormula(int row, int col, string formula, ICellStyle style)
    {
        Cell(row, col).CellFormula = formula;
        Cell(row, col).CellStyle = style;
    }

    private HSSFPatriarch patriarch = null;
    public void DrawLine(int col1, int row1, int dx1, int dy1, int col2, int row2, int dx2, int dy2, LineStyle lineStyle, int lineWidth)
    {
        if (patriarch == null)
            patriarch = Sheet.CreateDrawingPatriarch() as HSSFPatriarch;

        HSSFClientAnchor a = new HSSFClientAnchor(dx1, dy1, dx2, dy2, col1, row1, col2, row2);
        HSSFSimpleShape s = patriarch.CreateSimpleShape(a);
        s.ShapeType = HSSFSimpleShape.OBJECT_TYPE_LINE;   // 設定線條類型為線條 
        s.LineStyle = lineStyle;  // 設定為實線 
        s.LineWidth = lineWidth;
    }

    public void DrawPicture(int col1, int row1, int dx1, int dy1, int col2, int row2, int dx2, int dy2, string pictureFileName)
    {
        if (patriarch == null)
            patriarch = Sheet.CreateDrawingPatriarch() as HSSFPatriarch;

        byte[] picture = File.ReadAllBytes(pictureFileName);
        int pictureIdx = WorkBook.AddPicture(picture, PictureType.JPEG);

        HSSFClientAnchor a = new HSSFClientAnchor(dx1, dy1, dx2, dy2, col1, row1, col2, row2);
        HSSFPicture p = patriarch.CreatePicture(a, pictureIdx) as HSSFPicture;
        //p.Resize();
    }

    public void SetColumnWidth(int column, int width)
    {
        Sheet.SetColumnWidth(column, width * 256 + 182);
    }

    public void SetRowHeight(int row, int height)
    {
        Sheet.GetRow(row).HeightInPoints = height;
    }
}