/// <summary>
/// Download the file and add it as a match
/// </summary>
/// <param name="File"></param>
/// <returns></returns>
private async Task DownloadFileAsync(IDictionary <string, object> File)
{
await OneDrive.DownloadAsync(File);
vmMatch _vmMatch = new vmMatch();
await _vmMatch.Load(File["name"].ToString());
vmMatches.StoreMatch(_vmMatch);
}
/// <summary>
/// Synchronize the files between the OneDrive and the local files
/// </summary>
/// <returns></returns>
public async Task <List <String> > SyncFiles()
{
List <String> Result = new List <string>(0);
try
{
//Check if network is available
bool isConnected = System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable();
if (!isConnected)
{
return(Result);
}
List <IDictionary <string, object> > Files = await OneDrive.FilesAsync("TennisData");
IReadOnlyList <IStorageFile> LocalFiles = await LocalStorage.Files();
List <Task> Queue = new List <Task>(0);
if (Files != null) //When Files==null no network access
{
//Retrieve last synchronization
DateTime LastSynchronization = DateTime.MinValue;
if (ApplicationData.Current.LocalSettings.Values.ContainsKey("LastSynchronization"))
{
try
{
LastSynchronization = Convert.ToDateTime(ApplicationData.Current.LocalSettings.Values["LastSynchronization"]);
}
catch (Exception e)
{
LastSynchronization = DateTime.MinValue;
}
}
//Download files from onedrive if not present on local storage
bool Download = false;
foreach (var File in Files)
{
DateTime parsedDateTime;
DateTime.TryParse(File["updated_time"].ToString(), null, System.Globalization.DateTimeStyles.None, out parsedDateTime);
if (File["type"].ToString() == "file")
{
Download = true;
//Check if file does not exist in the local files
foreach (IStorageFile LocalFile in LocalFiles)
{
if (File["name"].ToString() == LocalFile.Name)
{
Download = false;
//If it does, check if file is newer than last synchronization, download it
var UpdatedTimeString = File["updated_time"];
DateTime UpdatedTime = Convert.ToDateTime(UpdatedTimeString);
if ((DateTime)UpdatedTime >= LastSynchronization)
{
//await DeleteFileAsync(LocalFile.Name);
Download = true;
}
break;
}
}
//Download the file to the local files (if necessary)
if (Download)
{
Task newDownload = DownloadFileAsync(File);
Queue.Add(newDownload);
Result.Add(File["name"].ToString());
}
}
}
//Remove files from local storage if not available on external storage
bool Found = false;
foreach (IStorageFile LocalFile in LocalFiles)
{
Found = false;
foreach (var File in Files)
{
if (File["name"].ToString() == LocalFile.Name)
{
Found = true;
break;
}
}
if (!Found)
{
if (LocalFile.Name.StartsWith("match_"))
{
Task newDeletion = DeleteFileAsync(LocalFile.Name);
Queue.Add(newDeletion);
}
}
}
//Wait until all tasks in queue are finished
bool bBusy = true;
while (bBusy)
{
bBusy = false;
foreach (Task _task in Queue)
{
if (!_task.IsCompleted)
{
bBusy = true;
}
}
if (bBusy)
{
await Task.Delay(100);
}
}
//Save setting of last synchronization
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
localSettings.Values["LastSynchronization"] = DateTime.Now.ToString();
LocalFiles = await LocalStorage.Files();
foreach (IStorageFile LocalFile in LocalFiles)
{
Result.Add(LocalFile.Name);
}
}
}
catch
{
}
return(Result);
}