//TODO: Violation of one rensponsibility rule
public async Task <bool> MergeAsync(string fileId, DateTime currentDate, Func <DataSet, DateTime> readDate)
{
await Online.AuthorizeAsync();
if (!CheckConnection())
{
return(false);
}
byte[] raw;
try
{
raw = Online.Downloader.Download(Online.Credentials, fileId);
if (raw == null)
{
return(false);
}
}
catch
{
return(false);
}
DataSet update;
using (Stream s = new MemoryStream(raw))
{
update = new DataSet();
update.ReadXml(s, XmlReadMode.Auto);
}
// check modified date.
var updateDate = readDate(update);
DataSet src, dest;
if (updateDate > currentDate)
{
src = Storage;
dest = update;
}
else
{
src = update;
dest = Storage;
}
src.Merge(dest, true, MissingSchemaAction.AddWithKey);
Storage = src;
return(true);
}
//TODO: Violation of one rensponsibility rule
public async Task <bool> RestoreAsync(string fileId)
{
if (Online == null)
{
return(false);
}
await Online.AuthorizeAsync();
byte[] raw;
try
{
raw = Online.Downloader.Download(Online.Credentials, fileId);
if (raw == null)
{
return(false);
}
}
catch
{
//TODO: write good message here
throw;
}
using (Stream s = new MemoryStream(raw))
{
var onlineStorage = new DataSet();
onlineStorage.ReadXml(s, XmlReadMode.Auto);
onlineStorage.AcceptChanges();
//TODO: merge
/*
* if (Storage != null)
* Storage.Merge(onlineStorage, true, MissingSchemaAction.AddWithKey);
* else
* Storage = onlineStorage;
*/
Storage = onlineStorage;
}
return(true);
}
//TODO: Violation of one rensponsibility rule
public async Task <bool> BackupAsync(string fileId, bool exists)
{
if (!CheckConnection() || Online == null)
{
return(false);
}
await Online.AuthorizeAsync();
Save(ConnectionString);
var raw = File.ReadAllBytes(ConnectionString);
try
{
Online.Uploader.Upload(Online.Credentials, raw, fileId, exists);
return(true);
}
catch
{
throw;
}
}