public async Task InjectCats()
{
string body = await LoadCatsFromApi().ConfigureAwait(false);
CatsEpResponse catsFromEndPoint = JsonConvert.DeserializeObject <CatsEpResponse>(body);
IEnumerable <CatEp> newCats = FilterCatsInBase(catsFromEndPoint);
await Context.AddRangeAsync(newCats.ToCatModels()).ConfigureAwait(false);
await Context.SaveChangesAsync().ConfigureAwait(false);
}
private IEnumerable <CatEp> FilterCatsInBase(CatsEpResponse catsFromEndPoint)
{
IEnumerable <string> catUrls = catsFromEndPoint.Images.Select(e => e.Url);
if (Context.Cats.Count() > 0)
{
IDictionary <string, int> exclusionMap = Context.Cats.Where(cat => catUrls.Contains(cat.ImageLink)).ToDictionary(c => c.ImageLink, c => c.Id);
IEnumerable <CatEp> newCats = catsFromEndPoint.Images.Where(cat => !exclusionMap.ContainsKey(cat.Url));
return(newCats);
}
else
{
return(catsFromEndPoint.Images);
}
}
public static IEnumerable <Cat> ToCatModels(this CatsEpResponse response)
{
return(response.Images.ToCatModels());
}
