using COP.Info;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System.ComponentModel;

namespace COP
{
    public partial class ExcelComponent : Component
    {
        public ExcelComponent()
        {
            InitializeComponent();
        }

        public ExcelComponent(IContainer container)
        {
            container.Add(this);
            InitializeComponent();
        }

        public void GenerateExcelWithImages(ExcelImageInfo info)
        {
            if (string.IsNullOrEmpty(info.fileName))
            {
                throw new ArgumentNullException(nameof(info.fileName), "File name cannot be null or empty.");
            }
            if (info.images == null || info.images.Count == 0)
            {
                throw new ArgumentException("At least one image must be provided.", nameof(info.images));
            }

            if (string.IsNullOrEmpty(info.documentTitle))
            {
                throw new ArgumentNullException(nameof(info.documentTitle), "Document title cannot be null or empty.");
            }

            var workbook = new XSSFWorkbook();
            var sheet = workbook.CreateSheet("Sheet1");
            sheet.CreateRow(0).CreateCell(0).SetCellValue(info.documentTitle);

            int startRowIndex = 2;
            var rowOffset = 1;

            foreach (var imageInfo in info.images)
            {
                using var fs = new FileStream(imageInfo.FilePath, FileMode.Open, FileAccess.Read);
                var imageBytes = new byte[fs.Length];
                fs.Read(imageBytes, 0, imageBytes.Length);

                var pictureIdx = workbook.AddPicture(imageBytes, PictureType.JPEG);
                var drawing = sheet.CreateDrawingPatriarch();
                var anchor = new XSSFClientAnchor(0, 0, 0, 0, 0, startRowIndex, 1, startRowIndex + 1);
                var picture = drawing.CreatePicture(anchor, pictureIdx);

                picture.Resize();

                var pictureHeight = picture.GetImageDimension().Height / 20;

                startRowIndex += pictureHeight + rowOffset;
            }

            using (var fs = new FileStream(info.fileName, FileMode.Create, FileAccess.Write))
            {
                workbook.Write(fs);
            }
        }

        public class ImageInfo
        {
            public string? FilePath { get; set; }
        }
    }
}