private void Synchronize <T>(List <T> modelsFromAPI, List <T> modelsFromDatabase, T model) where T : class, BaseModel, new()
{
BaseService <T> service = new BaseService <T>();
// Todo: make batch functions for a better performance
#region Local to Global
// New items added
List <T> addedItemsLocally = modelsFromDatabase.Where(m => m.LastSynchronized == null).ToList();
foreach (T item in addedItemsLocally)
{
T modelToAdd = item;
this.UpdateModel <T>(ref modelToAdd);
}
// Items updated
List <T> updatedItemsLocally = modelsFromDatabase.Where(m => m.ModifiedAt > m.LastSynchronized && m.Active).ToList();
foreach (T item in updatedItemsLocally)
{
T modelToUpdate = item;
this.UpdateModel <T>(ref modelToUpdate);
}
// Items deleted
List <T> deletedItemsLocally = modelsFromDatabase.Where(m => m.ModifiedAt > m.LastSynchronized && !m.Active).ToList();
foreach (T item in deletedItemsLocally)
{
this.Delete <T>(item.Id);
}
#endregion
#region Global to Local
// New items added
List <Guid> addedIdsGlobally = modelsFromAPI.Select(m => m.Id).Except(modelsFromDatabase.Select(m => m.Id)).ToList();
List <T> addedItemsGlocally = modelsFromAPI.Where(m => addedIdsGlobally.Contains(m.Id)).ToList();
foreach (T item in addedItemsGlocally)
{
T modelToUpdate = item;
service.AddOrUpdate(ref modelToUpdate);
}
// Items updated
// Items deleted
#endregion
// BatchUpdate LastSynchronized
if (modelsFromDatabase.Any())
{
service.BatchUpdateLastSynchronized <T>(modelsFromDatabase.Select(m => m.Id).ToList(), ref model);
}
}