protected void CreateHistory(Action<OperationState> stateChangedCallback, Action completedCallback, CancellationToken cancellationToken)
{
//1. Group By Objects
//2. For Every Group retrive group items
//3. Select from group all but newest
//4. Drop all but newest
//5. CreateHistory items
OperationState state = new OperationState();
var objects = Repositories.AdsRepository.GetAdsObjects<AdRealty>();
state.ProgressTotal = objects.Count();
stateChangedCallback(state);
foreach (var obj in objects)
{
if (cancellationToken.IsCancellationRequested)
{
state.Canceled = true;
stateChangedCallback(state);
break;
}
var objAds = Repositories.AdsRepository.GetAdsForTheSameObject(obj).OrderByDescending(a => a.CollectDate);
Repositories.AdsRepository.DeleteItems(objAds.Skip(1).Select(a => a.Id).ToList());
AdRealty newestAd = (AdRealty)objAds.First();
Repositories.AdHistoryItemsRepository.AddList(objAds.Skip(1)
.Select(a => new AdHistoryItem()
{
AdId = newestAd.Id,
AdCollectDate = a.CollectDate,
AdPublishDate = a.PublishDate,
Price = a.Price
})
.ToList());
state.Progress++;
stateChangedCallback(state);
}
completedCallback();
}
protected void FillDetails(Action<OperationState> stateCallback, Action completedCallback, CancellationToken cancelationToken, List<Ad> ads)
{
Dictionary<string, IConnector> connectorsCache = new Dictionary<string, IConnector>();
OperationState state = new OperationState();
state.ProgressTotal = ads.Count;
foreach (var ad in ads)
{
IConnector connector;
if (!connectorsCache.TryGetValue(ad.ConnectorId, out connector))
{
connector = Managers.ConnectorsManager.GetById(ad.ConnectorId);
connectorsCache.Add(ad.ConnectorId, connector);
}
try
{
if (connector.FillDetails(ad))
{
if (cancelationToken.IsCancellationRequested)
{
state.Canceled = true;
stateCallback(state);
break;
}
ad.DetailsDownloadStatus = DetailsDownloadStatus.Downloaded;
Repositories.AdsRepository.UpdateItem(ad);
if (ad.Images != null && ad.Images.Count > 0)
{
Repositories.AdImagesRepository.AddList(ad.Images);
}
}
state.Description = string.Format("Fill details {0}.", ad.ConnectorId);
state.ProgressTotal++;
stateCallback(state);
}
catch (Exception ex)
{
Managers.LogEntriesManager.AddItem(SeverityLevel.Error,
string.Format("Fill details error. Connector: {0}; Ad: {1}.", connector.Id, ad.Id),
string.Format("Exception: {0}\n Stack: {1}\n Url: {2}", ex.Message, ex.StackTrace, ad.Url));
}
}
completedCallback();
}