/// <summary>
/// Get the file path of file
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
protected string GetFilePath(Dto.FileInfo file)
{
StringBuilder sb = new ();
sb.Append(_appSettings.Configuration.FileDirectoryPath.TrimEnd(Path.DirectorySeparatorChar));
sb.Append(Path.DirectorySeparatorChar);
sb.Append(file.Path.Replace("..", string.Empty));
sb.Append(Path.DirectorySeparatorChar);
sb.Append(Path.GetFileName(file.Name));
return(sb.ToString());
}
/// <inheritdoc cref="IFileManager.DownloadFileByGuidAsync(Guid)" />
public async Task <byte[]> DownloadFileByGuidAsync(Guid fileId)
{
Dto.FileInfo file = (await _dbContext.KastraFiles
.SingleOrDefaultAsync(f => f.FileId == fileId))
.ToFileInfo();
if (file is null)
{
throw new Exception($"{nameof(fileId)} not found");
}
return(File.ReadAllBytes(GetFilePath(file)));
}
/// <inheritdoc cref="IFileManager.AddFileAsync(Dto.FileInfo, Stream)"/>
public async Task AddFileAsync(Dto.FileInfo file, Stream stream)
{
if (stream is null)
{
throw new ArgumentNullException(nameof(stream));
}
if (file is null)
{
throw new ArgumentNullException(nameof(file));
}
if (file.FileId != Guid.Empty &&
(await _dbContext.KastraFiles.AnyAsync(f => f.FileId == file.FileId)))
{
throw new ArgumentException($"{nameof(file.FileId)} already exists");
}
// Generate new file id
if (file.FileId == Guid.Empty)
{
file.FileId = Guid.NewGuid();
}
// Get file path
string filePath = GetFilePath(file);
try
{
// Save file
using (FileStream fileStream = System.IO.File.Create(filePath, (int)stream.Length))
{
byte[] bytesInStream = new byte[stream.Length];
stream.Read(bytesInStream, 0, bytesInStream.Length);
fileStream.Write(bytesInStream, 0, bytesInStream.Length);
}
// Save file in database
_dbContext.KastraFiles.Add(file.ToFile());
await _dbContext.SaveChangesAsync();
}
catch (Exception)
{
File.Delete(filePath);
throw;
}
}