public async Task <Boolean> DownloadPosts(SpecialCaseAction actionIfFolderNotEmpty)
{
System.IO.Directory.CreateDirectory(this.blogSettings.LocalPostsFolder);
if (!IsLocalPostsFolderEmpty())
{
switch (actionIfFolderNotEmpty)
{
case SpecialCaseAction.DoNothing: return(false);
case SpecialCaseAction.Throw: throw new Exception($"The target directory '{this.blogSettings.LocalPostsFolder}' is not empty.");
default: throw new NotImplementedException();
}
}
var client = CreateDriveClient();
var sharedFolderId = await GetSharedDriveFolderId(client);
var fileIds = await client.FindIdsOfFile(PostsBackupFilename, sharedFolderId);
if (fileIds.Count > 1)
{
throw new Exception($"There are multiple files named '{PostsBackupFilename}' on google drive. Manually weed out all but one and try again");
}
else if (fileIds.Count == 0)
{
return(false);
}
else
{
var tempfile = System.IO.Path.GetTempFileName();
try
{
using (var fs = System.IO.File.OpenWrite(tempfile))
{
var status = await client.DownloadFile(fileIds[0], fs);
if (status != DownloadStatus.Completed)
{
throw new Exception("Download failed: " + status);
}
}
System.IO.Compression.ZipFile.ExtractToDirectory(tempfile, this.blogSettings.LocalPostsFolder);
}
finally
{
System.IO.File.Delete(tempfile);
}
return(true);
}
}
public async Task <string> UploadPosts(SpecialCaseAction actionIfFolderEmpty)
{
if (IsLocalPostsFolderEmpty())
{
switch (actionIfFolderEmpty)
{
case SpecialCaseAction.DoNothing: return(null);
case SpecialCaseAction.Throw: throw new Exception($"The target directory '{this.blogSettings.LocalPostsFolder}' is empty.");
default: throw new NotImplementedException();
}
}
var tempFilename = System.IO.Path.Combine(System.IO.Path.Combine(System.IO.Path.GetTempPath()), $"{Guid.NewGuid().ToString()}.zip");
try
{
System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(tempFilename));
System.IO.Compression.ZipFile.CreateFromDirectory(this.blogSettings.LocalPostsFolder, tempFilename);
var client = CreateDriveClient();
var folderId = await GetSharedDriveFolderId(client);
string fileId;
using (var f = System.IO.File.OpenRead(tempFilename))
{
fileId = await client.UploadFileToFolder(folderId, PostsBackupFilename, "application/zip", "application/zip", f);
}
return(fileId);
}
finally
{
if (System.IO.File.Exists(tempFilename))
{
System.IO.File.Delete(tempFilename);
}
}
}
