/// <summary>
/// Returns a new paging object with the previous {limit} number of items
/// Throws an IndexOutOfRangeException if there are no more items
/// </summary>
/// <returns></returns>
public async Task <Paging <T> > GetPrevious(string accessToken)
{
if (string.IsNullOrWhiteSpace(Previous) || Offset <= 0)
{
throw new IndexOutOfRangeException($"Offset({Offset}) already at or below 0. There are no more items left to get");
}
else /* There are items left to get, so return a new paging object with that offset*/
{
HttpRequestMessage message = WebRequestHelpers.SetupRequest(this.Previous, accessToken);
HttpResponseMessage response = await WebRequestHelpers.Client.SendAsync(message);
if (response.IsSuccessStatusCode)
{
JToken token = await WebRequestHelpers.ParseJsonResponse(response.Content);
Paging <T> paging = new Paging <T>(token);
return(paging);
}
}
return(null);
}
/// <summary>
/// Returns a new Cursor-Based Paging object with the next {Limit} number of items,
/// starting after the {After} fields
/// Throws an IndexOutOfRangeException if there are no more items
/// </summary>
/// <returns></returns>
public async Task <CursorBasedPaging <T> > GetNext(string accessToken)
{
/* Offset is past the total - therefore there's nothing left to get */
if (string.IsNullOrWhiteSpace(Next))
{
throw new IndexOutOfRangeException($"There are no more items left to get");
}
else /* There are items left to get, so return a new paging object with that offset*/
{
HttpRequestMessage message = WebRequestHelpers.SetupRequest(this.Next, accessToken);
HttpResponseMessage response = await WebRequestHelpers.Client.SendAsync(message);
if (response.IsSuccessStatusCode)
{
JToken token = await WebRequestHelpers.ParseJsonResponse(response.Content);
CursorBasedPaging <T> paging = new CursorBasedPaging <T>(token);
return(paging);
}
}
return(null);
}
