private async Task PushLocalChanges(ExchangeChangeSet changeSet, EwsSyncServer server, List <ExchangeMapId> mapId, EwsFolderIdentifier folder)
{
// send local add content
if (changeSet.AddedTasks.Count > 0)
{
var ewsTasks = changeSet.AddedTasks.Select(exchangeTask => exchangeTask.BuildEwsTask()).ToList();
var createItemResult = await server.CreateItemAsync(ewsTasks, folder);
if (changeSet.AddedTasks.Count == createItemResult.Identifiers.Count)
{
for (int i = 0; i < createItemResult.Identifiers.Count; i++)
{
var identifier = createItemResult.Identifiers[i];
if (identifier.IsValid)
{
mapId.Add(new ExchangeMapId {
LocalId = changeSet.AddedTasks[i].LocalId, ExchangeId = identifier.GetFullId()
});
}
else
{
LogService.Log("EwsSyncService", "Error while creating task: " + changeSet.AddedTasks[i].Subject + " error: " + identifier.ErrorMessage);
}
}
}
else
{
LogService.Log("EwsSyncService", string.Format("Request to create {0} items but result only has {1} items", changeSet.AddedTasks.Count, createItemResult.Identifiers.Count));
}
}
// send local modification content
if (changeSet.ModifiedTasks.Count > 0)
{
var ewsTasks = changeSet.ModifiedTasks.Select(exchangeTask => exchangeTask.BuildEwsTask()).ToList();
var updateItemResult = await server.UpdateItemsAsync(ewsTasks);
// todo ews: we don't update change key here... not optimal because then we're going to ask
// the server to enumerate items, we will find different change keys for update items and so
// we're going to download them again from the server
}
// send local delete content
if (changeSet.DeletedTasks.Count > 0)
{
var ewsIdentifiers = new List <EwsItemIdentifier>();
foreach (var deletedAsset in changeSet.DeletedTasks)
{
ewsIdentifiers.Add(deletedAsset.Id.GetEwsItemIdentifier());
}
await server.DeleteItemsAsync(ewsIdentifiers);
}
}
