public async Task <IQueryable <T> > GetList(Func <Task <List <T> > > download)
{
bool needToUpdate = false;
Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var values = localSettings.Values[typeof(T).Name + "SyncDate"];
if (values != null)
{
DateTime dateSync = DateTime.Parse((string)values);
if (dateSync < DateTime.Now.AddDays(-7))
{
needToUpdate = true;
}
}
else
{
needToUpdate = true;
}
IQueryable <T> query;
if (!needToUpdate)
{
// Get from database
using (var bddContext = new BddContext())
{
query = bddContext.Set <T>().ToList().AsQueryable();
}
}
else
{
// Update database
query = (await download()).AsQueryable();
}
return(query);
}