/// <summary>
/// Create an LtiRequestViewModel that contains a ContentItemPlacementResponse.
/// </summary>
/// <param name="url">The content_item_return_url from the content-item message.</param>
/// <param name="consumerKey">The OAuth consumer key to use to sign the request.</param>
/// <param name="consumerSecret">The OAuth consumer secret to use to sign the request.</param>
/// <param name="contentItems">The ContentItemPlacementResponse to send.</param>
/// <param name="data">The data received in the original content-item message.</param>
/// <param name="ltiErrorLog">Optional plain text error message to be logged by the Tool Consumer.</param>
/// <param name="ltiErrorMsg">Optional plain text error message to be displayed by the Tool Consumer.</param>
/// <param name="ltiLog">Optional plain text message to be logged by the Tool Consumer.</param>
/// <param name="ltiMsg">Optional plain text message to be displayed by the Tool Consumer.</param>
/// <returns>The LtiRequestViewModel which contains a signed version of the response.</returns>
public static LtiRequestViewModel CreateContentItemSelectionResponseViewModel(
string url, string consumerKey, string consumerSecret,
ContentItemPlacementResponse contentItems, string data,
string ltiErrorLog, string ltiErrorMsg, string ltiLog, string ltiMsg)
{
var ltiRequest = (IContentItemSelectionResponse) new LtiRequest(LtiConstants.ContentItemSelectionResponseLtiMessageType)
{
Url = new Uri(url),
ConsumerKey = consumerKey,
ContentItems = JsonConvert.SerializeObject(contentItems, Formatting.None, new JsonSerializerSettings {
NullValueHandling = NullValueHandling.Ignore
}),
Data = data,
LtiErrorLog = ltiErrorLog,
LtiErrorMsg = ltiErrorMsg,
LtiLog = ltiLog,
LtiMsg = ltiMsg
};
return(ltiRequest.GetLtiRequestViewModel(consumerSecret));
}
/// <summary>
/// Send content-item response to Tool Consumer content-item service. This is experimental.
/// </summary>
/// <param name="url">The content-item service URL (from content-item message).</param>
/// <param name="consumerKey">The OAuth consumer key to use to sign the request.</param>
/// <param name="consumerSecret">The OAuth consumer secret to use to sign the request.</param>
/// <param name="contentItems">The ContentItemPlacementResponse to POST.</param>
/// <param name="data">The data received in the original content-item message.</param>
/// <returns>Return True if the POST request is successful.</returns>
public static bool PostContentItems(
string url, string consumerKey, string consumerSecret,
ContentItemPlacementResponse contentItems, string data)
{
var serviceResponse = new ContentItemsServiceResponse
{
ContentItems = contentItems,
Data = data
};
try
{
var webRequest = CreateContentItemsRequest(url, consumerKey, consumerSecret, serviceResponse);
using (var webResponse = webRequest.GetResponse() as HttpWebResponse)
{
return(webResponse != null && webResponse.StatusCode == HttpStatusCode.OK);
}
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// Create an LtiRequestViewModel that contains a ContentItemPlacementResponse.
/// </summary>
/// <param name="url">The content_item_return_url from the content-item message.</param>
/// <param name="consumerKey">The OAuth consumer key to use to sign the request.</param>
/// <param name="consumerSecret">The OAuth consumer secret to use to sign the request.</param>
/// <param name="contentItems">The ContentItemPlacementResponse to send.</param>
/// <param name="data">The data received in the original content-item message.</param>
/// <returns>The LtiRequestViewModel which contains a signed version of the response.</returns>
public static LtiRequestViewModel CreateContentItemSelectionResponseViewModel(
string url, string consumerKey, string consumerSecret,
ContentItemPlacementResponse contentItems, string data)
{
return(CreateContentItemSelectionResponseViewModel(url, consumerKey, consumerSecret, contentItems, data, null, null, null, null));
}