/// <inheritdoc />
/// <param name="parentFolderId">This is the parent folder id.</param>
/// <param name="pageSize">Items per page.</param>
/// <param name="pageObject">Page token.</param>
/// <exception cref="FileNotFoundException">Files not found.</exception>
/// <exception cref="InvalidDataException"><paramref name="pageObject"/> is not a <see cref="string"/>.</exception>
/// <exception cref="UnauthorizedAccessException">Unauthorized token.</exception>
public async Task <ListFileInfoResult> ListAsync(string parentFolderId = "", int pageSize = 100, object pageObject = default)
{
if (!(pageObject is string))
{
throw new InvalidDataException($"'{nameof(pageObject)}' must be a string.");
}
string nextPageToken = default;
IList <Google.Apis.Drive.v3.Data.File> files = default;
try
{
var request = Service.Files.List();
request.Fields = "nextPageToken, files(id, name, mimeType, createdTime, size)";
request.PageSize = pageSize;
request.PageToken = (string)pageObject;
if (!string.IsNullOrWhiteSpace(parentFolderId))
{
request.Q = $"'{parentFolderId}' in parents and ";
}
// ignore files in trash
request.Q = "trashed = false";
var result = await request.ExecuteAsync();
nextPageToken = result.NextPageToken;
files = result.Files;
if (files?.Count == 0)
{
throw new FileNotFoundException("Files not found.");
}
var resultFiles = new ListFileInfoResult();
files.ForEach(file =>
{
var fileInfo = new FileInfoResult
{
MimeType = file.MimeType,
Id = file.Id,
Name = file.Name,
CreatedTime = file.CreatedTime,
Size = file.Size ?? 0,
};
resultFiles.Files.Add(fileInfo);
});
resultFiles.NextPageObject = nextPageToken;
return(resultFiles);
}
catch (TokenResponseException e)
when(e.Message.Contains("unauthorized", StringComparison.InvariantCultureIgnoreCase))
{
throw new UnauthorizedAccessException("Unauthorized", e);
}
catch { throw; }
}
/// <summary>
/// List all directories/files from a <see cref="FtpSettings.Url"/> in a <paramref name="relativeDirectory"/>.
/// </summary>
/// <remarks>
/// <para><paramref name="relativeDirectory"/> is optional, if is not specified lists in the root <see cref="FtpSettings.Url"/>.</para>
/// <para><paramref name="relativeDirectory"/> can also be specified in <see cref="FtpSettings.Url"/>.</para>
/// </remarks>
/// <param name="relativeDirectory">Optional: relative directory path.</param>
/// <param name="pageSize">Not used.</param>
/// <param name="pageObject">Not used.</param>
/// <returns>A <see cref="System.Collections.IEnumerable"/> of string listing all directories and files.</returns>
/// <exception cref="WebException">Fail when connecting to the ftp server.</exception>
/// <exception cref="UnauthorizedAccessException">Unauthorized: invalid credentials.</exception>
public async Task <ListFileInfoResult> ListAsync(
string relativeDirectory = "",
int pageSize = 100, object pageObject = default)
{
var uri = new Uri(_settings.Host);
if (!string.IsNullOrWhiteSpace(relativeDirectory))
{
uri = new Uri(uri, relativeDirectory);
}
var request = (FtpWebRequest)WebRequest.Create(uri);
try
{
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
if (_settings.IsCredentialsAvailable)
{
request.Credentials = _credentials;
}
using (var response = (FtpWebResponse)await request.GetResponseAsync())
using (var responseStream = response.GetResponseStream())
{
using (var reader = new StreamReader(responseStream))
{
var filesList = new ListFileInfoResult();
while (reader?.EndOfStream == false)
{
var line = reader.ReadLine();
var name = line.Split(" ").Last();
if (name == "." || name == "..")
{
continue;
}
string contentType = "application/octet-stream";
new FileExtensionContentTypeProvider().TryGetContentType(name, out contentType);
var filesInfo = new FileInfoResult
{
Additional = line,
Name = name,
MimeType = contentType
};
filesList.Files.Add(filesInfo);
}
return(filesList);
}
}
}
// 530 means not logged in
catch (WebException e)
when(e.Message.Contains("530"))
{
throw new UnauthorizedAccessException("Unauthorized: invalid credentials.");
}
catch (Exception e)
{
throw new WebException("Fail when connecting to the ftp server.", e);
}
finally
{
request.Abort();
}
}