using System;
using System.Drawing;
using System.IO;
using System.Text.RegularExpressions;

namespace BS.Shared.Core
{
    public static class ImageUtils
    {
        public static Bitmap ConvertBase64StringToBitmap(string base64String)
        {
            if(!string.IsNullOrWhiteSpace(base64String))
            {
                var base64Data = Regex.Match(base64String, @"data:image/(?<type>.+?),(?<data>.+)").Groups["data"].Value;
                var binData = Convert.FromBase64String(base64Data);

                var image = ByteArrayToImage(binData);
                return Utils.CropImage(image);
            }

            return null;
        }

        public static Image ByteArrayToImage(byte[] byteArrayIn)
        {
            Image returnImage;

            using(var memoryStream = new MemoryStream(byteArrayIn))
            {
                returnImage = Image.FromStream(memoryStream);
            }

            return returnImage;
        }
    }
}