public static async Task <CollectionApiResponse <T> > GetPageAsync <T>(this IQueryable <T> source, int targetPage, int size,
CancellationToken cancellationToken)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (targetPage < 1)
{
throw new ArgumentOutOfRangeException(nameof(targetPage), "Target page can't be less than 1");
}
if (size <= 0)
{
throw new ArgumentOutOfRangeException(nameof(size), "Size of page can't be less than 0");
}
var page = new CollectionApiResponse <T>();
page.CurrentPage = targetPage;
page.OverallCount = await source.CountAsync(cancellationToken : cancellationToken).ConfigureAwait(false);
page.PageSize = size;
page.Content = await source.Skip((targetPage - 1) *size).Take(size)
.ToListAsync(cancellationToken: cancellationToken).ConfigureAwait(false);
page.PageCount = (int)Math.Ceiling((decimal)page.OverallCount / size);
return(page);
}
private static CollectionApiResponse <RecipeShortModel> GetCollectionApiResponse(params RecipeShortModel[] result)
{
CollectionApiResponse <RecipeShortModel> collectionApiResponse =
new CollectionApiResponse <RecipeShortModel>
{
Content = result,
CurrentPage = 1,
OverallCount = result.Length,
PageCount = 1,
PageSize = result.Length
};
return(collectionApiResponse);
}