using ClosedXML.Excel;
using JdeScoping.ExcelIO.Attributes;

namespace JdeScoping.ExcelIO.Formatting;

/// <summary>
/// Column width and number format utilities.
/// </summary>
public static class ColumnFormatter
{
    /// <summary>
    /// Applies column formatting based on attribute settings.
    /// </summary>
    /// <param name="column">The column to format.</param>
    /// <param name="attr">The output column attribute with settings.</param>
    public static void ApplyColumnFormat(IXLColumn column, OutputColumnAttribute attr)
    {
        // Set number format
        column.Style.NumberFormat.Format = attr.Format;

        // Handle wrap text
        if (attr.WrapText)
        {
            column.Style.Alignment.WrapText = true;
        }

        // Handle width
        if (attr.WrapText && !attr.AutoWidth)
        {
            // Wrapped columns with fixed width skip auto-fit
            column.Width = attr.Width;
        }
        else if (attr.AutoWidth)
        {
            column.AdjustToContents();
            column.Width *= ExcelFormats.DataPaddingFactor;
        }
        else
        {
            column.Width = attr.Width;
        }
    }

    /// <summary>
    /// Auto-fits a column with the specified padding factor.
    /// </summary>
    /// <param name="column">The column to auto-fit.</param>
    /// <param name="paddingFactor">The padding factor to apply (e.g., 1.15 for 15% padding).</param>
    public static void AutoFitWithPadding(IXLColumn column, double paddingFactor)
    {
        column.AdjustToContents();
        column.Width *= paddingFactor;
    }
}