using System.IO;

namespace Crowdin.Plugin.Helpers.FileHelpers
{
    public static class DownloadFileHelper
    {
        public static byte[] LoadSourceBytes(string filepath)
        {
            using (var fsSource = new FileStream(filepath,
                FileMode.Open,
                FileAccess.Read))
            {
                // Read the source file into a byte array.
                var bytes = new byte[fsSource.Length];
                var numBytesToRead = (int)fsSource.Length;
                var numBytesRead = 0;

                while (numBytesToRead > 0)
                {
                    // Read may return anything from 0 to numBytesToRead.
                    var n = fsSource.Read(bytes, numBytesRead, numBytesToRead);

                    // Break when the end of the file is reached.
                    if (n == 0)
                        break;

                    numBytesRead += n;
                    numBytesToRead -= n;
                }

                return bytes;
            }
        }
    }
}