/// <summary>
/// Invokes <c>index.php</c> call with <c>action=ajax</c> query.
/// </summary>
/// <param name="request">The request message.</param>
/// <param name="responseParser">The parser used to parse the response.</param>
/// <param name="cancellationToken">The token used to cancel the operation.</param>
/// <returns>The parsed JSON root of response.</returns>
/// <exception cref="ArgumentNullException">Either <paramref name="request"/> or <paramref name="responseParser"/> is <c>null</c>.</exception>
/// <remarks>This method will automatically add <c>action=ajax</c> field in the request.</remarks>
public async Task <T> InvokeWikiaAjaxAsync <T>(WikiRequestMessage request,
IWikiResponseMessageParser <T> responseParser, CancellationToken cancellationToken)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (responseParser == null)
{
throw new ArgumentNullException(nameof(responseParser));
}
var localRequest = request;
if (request is WikiaQueryRequestMessage queryRequest)
{
var fields = new List <KeyValuePair <string, object> >(queryRequest.Fields.Count + 1)
{
new KeyValuePair <string, object>("action", "ajax")
};
fields.AddRange(queryRequest.Fields);
localRequest = new WikiaQueryRequestMessage(request.Id, fields, queryRequest.UseHttpPost);
}
Logger.LogDebug("Invoking Wikia Ajax: {Request}", localRequest);
var result = await WikiClient.InvokeAsync(Options.ScriptUrl, localRequest,
responseParser, cancellationToken);
return(result);
}
/// <summary>
/// Invokes Wikia API v1 call.
/// </summary>
/// <param name="relativeUri">The URI relative to <see cref="WikiaSiteOptions.WikiaApiRootUrl"/>. It often starts with a slash.</param>
/// <param name="request">The request message.</param>
/// <param name="responseParser">The parser used to parse the response.</param>
/// <param name="cancellationToken">The token used to cancel the operation.</param>
/// <exception cref="ArgumentNullException">Either <paramref name="request"/> or <paramref name="responseParser"/> is <c>null</c>.</exception>
/// <returns>The parsed JSON root of response.</returns>
public async Task <T> InvokeWikiaApiAsync <T>(string relativeUri, WikiRequestMessage request,
IWikiResponseMessageParser <T> responseParser, CancellationToken cancellationToken)
{
Logger.LogDebug("Invoking Wikia API v1: {Request}", request);
var result = await WikiClient.InvokeAsync(Options.WikiaApiRootUrl + relativeUri, request, responseParser, cancellationToken);
return(result);
}
/// <summary>
/// Invokes nirvana API call.
/// </summary>
/// <param name="request">The request message.</param>
/// <param name="responseParser">The parser used to parse the response.</param>
/// <param name="cancellationToken">The token used to cancel the operation.</param>
/// <exception cref="ArgumentNullException">Either <paramref name="request"/> or <paramref name="responseParser"/> is <c>null</c>.</exception>
/// <returns>The parsed JSON root of response.</returns>
/// <seealso cref="WikiaSiteOptions.NirvanaEndPointUrl"/>
public async Task <T> InvokeNirvanaAsync <T>(WikiRequestMessage request,
IWikiResponseMessageParser <T> responseParser, CancellationToken cancellationToken)
{
Logger.LogDebug("Invoking Nirvana API: {Request}", request);
var result = await WikiClient.InvokeAsync(Options.NirvanaEndPointUrl, request, responseParser, cancellationToken);
return(result);
}
/// <summary>
/// Invokes MediaWiki API and gets JSON result.
/// </summary>
/// <param name="message">The request message.</param>
/// <param name="responseParser">The parser that checks and parses the API response into <see cref="JToken"/>.</param>
/// <param name="suppressAccountAssertion">Whether to temporarily disable account assertion as set in <see cref="SiteOptions.AccountAssertion"/>.</param>
/// <param name="cancellationToken">The cancellation token that will be checked prior to completing the returned task.</param>
/// <exception cref="InvalidActionException">Specified action is not supported.</exception>
/// <exception cref="OperationFailedException">There is "error" node in returned JSON. Instances of derived types may be thrown.</exception>
/// <exception cref="AccountAssertionFailureException">You enabled account assertion, the assertion failed, and it also failed to retry logging in.</exception>
/// <returns>A task that returns the JSON response when completed.</returns>
/// <remarks>
/// Some enhancements are available only if <paramref name="message"/> is <see cref="MediaWikiFormRequestMessage"/>, including
/// <list type="bullet">
/// <item><description>
/// Account assertion, as specified in <see cref="SiteOptions.AccountAssertion"/>.
/// </description></item>
/// <item><description>
/// Automatic token-refreshing on <c>badtoken</c> error. This requires you to set all your <c>token</c>
/// fields in the <paramref name="message"/> to a placeholder of type <see cref="WikiSiteToken"/>,
/// instead of the actual token string.
/// </description></item>
/// </list>
/// </remarks>
public async Task <T> InvokeMediaWikiApiAsync <T>(WikiRequestMessage message, IWikiResponseMessageParser <T> responseParser,
bool suppressAccountAssertion, CancellationToken cancellationToken)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (responseParser == null)
{
throw new ArgumentNullException(nameof(responseParser));
}
var form = message as MediaWikiFormRequestMessage;
var localRequest = message;
var badTokenRetries = 0;
RETRY:
if (form != null)
{
// Apply tokens
var newFields = new List <KeyValuePair <string, object> >(form.Fields.Count + 3)
{
new KeyValuePair <string, object>("format", "json")
};
foreach (var tokenField in form.Fields)
{
var value = tokenField.Value;
if (value is WikiSiteToken)
{
value = await tokensManager.GetTokenAsync(
((WikiSiteToken)tokenField.Value).Type, false, cancellationToken);
}
newFields.Add(new KeyValuePair <string, object>(tokenField.Key, value));
}
// Apply account assertions
if (!suppressAccountAssertion && _AccountInfo != null)
{
if ((options.AccountAssertion & AccountAssertionBehavior.AssertBot) ==
AccountAssertionBehavior.AssertBot && _AccountInfo.IsBot)
{
newFields.Add(new KeyValuePair <string, object>("assert", "bot"));
}
else if ((options.AccountAssertion & AccountAssertionBehavior.AssertUser) ==
AccountAssertionBehavior.AssertUser && _AccountInfo.IsUser)
{
newFields.Add(new KeyValuePair <string, object>("assert", "user"));
}
}
localRequest = new MediaWikiFormRequestMessage(form.Id, newFields, form.AsMultipartFormData);
}
Logger.LogDebug("Sending request {Request}, SuppressAccountAssertion={SuppressAccountAssertion}",
localRequest, suppressAccountAssertion);
try
{
return(await WikiClient.InvokeAsync(options.ApiEndpoint, localRequest, responseParser, cancellationToken));
}
catch (AccountAssertionFailureException)
{
if (AccountAssertionFailureHandler != null)
{
// ISSUE Relogin might be called multiple times.
if (reLoginTask == null)
{
Logger.LogWarning("Account assertion failed. Try to relogin.");
Volatile.Write(ref reLoginTask, Relogin());
}
else
{
Logger.LogWarning("Account assertion failed. Waiting for relongin.");
}
var result = await reLoginTask;
if (result)
{
goto RETRY;
}
}
throw;
}
catch (BadTokenException)
{
// Allows retrying once.
if (form == null || badTokenRetries >= 1)
{
throw;
}
string invalidatedToken = null;
foreach (var tokenField in form.Fields.Where(p => p.Value is WikiSiteToken))
{
invalidatedToken = ((WikiSiteToken)tokenField.Value).Type;
tokensManager.ClearCache(invalidatedToken);
}
if (invalidatedToken == null)
{
throw;
}
Logger.LogWarning("BadTokenException: {Request}. Will retry after invalidating the token: {Token}.",
message, invalidatedToken);
badTokenRetries++;
goto RETRY;
}
}
