public IEnumerable <VacantionRequest> GetVacantionRequests() => VacationRequestsRepository.GetAll();
private async Task Synchronization(CancellationToken cancellationToken)
{
bool success = false;
try
{
var changedModels =
VacationRequestsRepository.GetAll()
.Where((arg) => arg.SyncState != SynchronizationState.Synced)
.ToList();
var uploadSuccess = !changedModels.Any();
if (!uploadSuccess)
{
var uploadNotSyncModels = await UploadSynchronization(changedModels, cancellationToken);
uploadSuccess = uploadNotSyncModels;
}
if (uploadSuccess)
{
var vacationDtos = await VacationRequestsApiService.GetVacations(cancellationToken);
var backendModels = vacationDtos
?.Select(SetupVacationRequest)
.ToList()
?? new List <VacantionRequest>();
cancellationToken.ThrowIfCancellationRequested();
var localSyncedModels = VacationRequestsRepository
.GetAll()
.Where(t => t.SyncState == SynchronizationState.Synced)
.ToList();
var removedModels = localSyncedModels
.Any(l => backendModels
.All(b => b.Id != l.Id));
if (removedModels || (backendModels.Any() && !localSyncedModels.Any()))
{
ResetLocalItems(localSyncedModels, backendModels, cancellationToken);
}
else
{
UpdateLocalItems(localSyncedModels, backendModels, cancellationToken);
}
success = true;
}
}
catch (OperationCanceledException)
{
}
catch (Exception)
{
}
lock (_syncRoot)
{
if (cancellationToken.IsCancellationRequested)
{
return;
}
_syncTCS.TrySetResult(success);
_syncTCS = null;
}
}
