/// <summary>
/// Delete a file inside datafile and all metadata related
/// </summary>
public bool Delete(string id)
{
if (string.IsNullOrEmpty(id))
{
throw new ArgumentNullException("id");
}
S3NoSqlFileInfo file = FindById(id);
if (file == null)
{
return(true);
}
file.DeleteData();
// remove file reference in _files
var d = m_Engine.Delete(FILE, Query.EQ("_id", id));
// if not found, just return false
if (d == 0)
{
return(false);
}
return(true);
}
/// <summary>
/// Upload a file based on stream data
/// </summary>
public S3NoSqlFileInfo Upload(string id, string filename, Stream stream)
{
// checks if file exists
var file = this.FindById(id);
if (file == null)
{
file = new S3NoSqlFileInfo(m_Engine, id, filename ?? id);
// insert if new
m_Engine.Insert(FILE, file.AsDocument);
}
// copy stream content to litedb file stream
stream.CopyTo(file.OpenWriteData());
return(file);
}
/// <summary>
/// Open/Create new file storage and returns linked Stream to write operations
/// </summary>
public S3NoSqlFileInfo OpenWrite(string id, string filename, BsonDocument metadata = null)
{
// checks if file exists
var file = this.FindById(id);
if (file == null)
{
file = new S3NoSqlFileInfo(m_Engine, id, filename ?? id);
// insert if new
m_Engine.Insert(FILE, file.AsDocument);
}
// update metadata if passed
if (metadata != null)
{
file.Metadata = metadata;
}
return(file);
}
