|
public static GetDataResponseAsync ( |
||
| flickr | The current instance of the |
|
| hashCall | string | |
| baseUrl | string | The base url to be called. |
| parameters | string>.Dictionary | A dictionary of parameters. |
| Résultat | Task |
|
/// <summary>
/// Get an <see cref="OAuthRequestToken"/> for the given callback URL.
/// </summary>
/// <remarks>Specify 'oob' as the callback url for no callback to be performed.</remarks>
/// <param name="callbackUrl">The callback Uri, or 'oob' if no callback is to be performed.</param>
/// <param name="callback"></param>
async public Task <bool> OAuthGetRequestTokenAsync(string callbackUrl, Action <FlickrResult <OAuthRequestToken> > callback)
{
string url = "http://www.flickr.com/services/oauth/request_token";
Dictionary <string, string> parameters = OAuthGetBasicParameters();
parameters.Add("oauth_callback", callbackUrl);
string sig = OAuthCalculateSignature("POST", url, parameters, null);
parameters.Add("oauth_signature", sig);
FlickrResponder.GetDataResponseAsync(this, url, parameters, (r) =>
{
FlickrResult <OAuthRequestToken> result = new FlickrResult <OAuthRequestToken>();
if (r.Error != null)
{
if (r.Error is System.Net.WebException)
{
OAuthException ex = new OAuthException(r.Error);
result.Error = ex;
}
else
{
result.Error = r.Error;
}
callback(result);
return;
}
result.Result = FlickrNet.OAuthRequestToken.ParseResponse(r.Result);
callback(result);
});
return(true);
}
internal async Task <T> GetResponseAsync <T>(IDictionary <string, string> parameters) where T : class, IFlickrParsable, new()
{
if (!parameters.ContainsKey("oauth_consumer_key"))
{
parameters.Add("oauth_consumer_key", ApiKey);
}
var result = await FlickrResponder.GetDataResponseAsync(this, BaseApiUrl, parameters);
var typeInfo = typeof(T).GetTypeInfo();
if (typeInfo.IsEnum)
{
return(default(T));
}
if (typeInfo.ImplementedInterfaces.Any(t => t.Name == "IFlickrParsable"))
{
using (var reader = XmlReader.Create(new StringReader(result), new XmlReaderSettings {
IgnoreWhitespace = true
}))
{
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
}
reader.MoveToElement();
reader.Read();
var item = new T();
item.Load(reader);
return(item);
}
}
return(default(T));
}
/// <summary>
/// For a given request token and verifier string return an access token.
/// </summary>
/// <param name="requestToken"></param>
/// <param name="requestTokenSecret"></param>
/// <param name="verifier"></param>
/// <param name="callback"></param>
public void OAuthGetAccessTokenAsync(string requestToken, string requestTokenSecret, string verifier, Action <FlickrResult <OAuthAccessToken> > callback)
{
CheckApiKey();
#if SILVERLIGHT
string url = "https://api.flickr.com/services/oauth/access_token";
#else
string url = "https://www.flickr.com/services/oauth/access_token";
#endif
Dictionary <string, string> parameters = OAuthGetBasicParameters();
parameters.Add("oauth_verifier", verifier);
parameters.Add("oauth_token", requestToken);
string sig = OAuthCalculateSignature("POST", url, parameters, requestTokenSecret);
parameters.Add("oauth_signature", sig);
FlickrResponder.GetDataResponseAsync(this, url, parameters, (r) =>
{
FlickrResult <OAuthAccessToken> result = new FlickrResult <OAuthAccessToken>();
if (r.Error != null)
{
if (r.Error is System.Net.WebException)
{
OAuthException ex = new OAuthException(r.Error);
result.Error = ex;
}
else
{
result.Error = r.Error;
}
callback(result);
return;
}
result.Result = FlickrNet.OAuthAccessToken.ParseResponse(r.Result);
callback(result);
});
}
internal async Task GetResponseAsync(IDictionary <string, string> parameters)
{
await FlickrResponder.GetDataResponseAsync(this, BaseApiUrl, parameters);
}
private void GetResponseAsync <T>(Dictionary <string, string> parameters, Action <FlickrResult <T> > callback) where T : IFlickrParsable, new()
{
CheckApiKey();
parameters["api_key"] = ApiKey;
if (!String.IsNullOrEmpty(OAuthAccessToken) || String.IsNullOrEmpty(AuthToken))
{
OAuthGetBasicParameters(parameters);
parameters.Remove("api_key");
if (!String.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
Uri url;
if (!String.IsNullOrEmpty(sharedSecret))
{
url = CalculateUri(parameters, true);
}
else
{
url = CalculateUri(parameters, false);
}
lastRequest = url.AbsoluteUri;
try
{
FlickrResponder.GetDataResponseAsync(this, BaseUri.AbsoluteUri, parameters, (r)
=>
{
FlickrResult <T> result = new FlickrResult <T>();
if (r.HasError)
{
result.Error = r.Error;
}
else
{
lastResponse = r.Result;
XmlReaderSettings settings = new XmlReaderSettings();
settings.IgnoreWhitespace = true;
XmlReader reader = XmlReader.Create(new StringReader(r.Result), settings);
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
continue;
}
reader.MoveToElement();
reader.Read();
T t = new T();
((IFlickrParsable)t).Load(reader);
result.Result = t;
result.HasError = false;
}
if (callback != null)
{
callback(result);
}
});
}
catch (Exception ex)
{
FlickrResult <T> result = new FlickrResult <T>();
result.Error = ex;
if (null != callback)
{
callback(result);
}
}
}
private void GetResponseAsync <T>(Dictionary <string, string> parameters, Action <FlickrResult <T> > callback) where T : IFlickrParsable, new()
{
CheckApiKey();
parameters["api_key"] = ApiKey;
// If performing one of the old 'flickr.auth' methods then use old authentication details.
string method = parameters["method"];
if (method.StartsWith("flickr.auth", StringComparison.Ordinal) && !method.EndsWith("oauth.checkToken", StringComparison.Ordinal))
{
if (!string.IsNullOrEmpty(AuthToken))
{
parameters["auth_token"] = AuthToken;
}
}
else
{
// If OAuth Token exists or no authentication required then use new OAuth
if (!string.IsNullOrEmpty(OAuthAccessToken) || string.IsNullOrEmpty(AuthToken))
{
OAuthGetBasicParameters(parameters);
if (!string.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
}
var url = CalculateUri(parameters, !string.IsNullOrEmpty(sharedSecret));
lastRequest = url;
try
{
FlickrResponder.GetDataResponseAsync(this, BaseUri.AbsoluteUri, parameters, (r)
=>
{
var result = new FlickrResult <T>();
if (r.HasError)
{
result.Error = r.Error;
}
else
{
try
{
lastResponse = r.Result;
var t = new T();
((IFlickrParsable)t).Load(r.Result);
result.Result = t;
result.HasError = false;
}
catch (Exception ex)
{
result.Error = ex;
}
}
if (callback != null)
{
callback(result);
}
});
}
catch (Exception ex)
{
var result = new FlickrResult <T>();
result.Error = ex;
if (null != callback)
{
callback(result);
}
}
}
private void GetResponseAsync <T>(Dictionary <string, string> parameters, Action <FlickrResult <T> > callback) where T : IFlickrParsable, new()
{
CheckApiKey();
parameters["api_key"] = ApiKey;
// If performing one of the old 'flickr.auth' methods then use old authentication details.
string method = parameters["method"];
if (method.StartsWith("flickr.auth", StringComparison.Ordinal) && !method.EndsWith("oauth.checkToken", StringComparison.Ordinal))
{
if (!string.IsNullOrEmpty(AuthToken))
{
parameters["auth_token"] = AuthToken;
}
}
else
{
// If OAuth Token exists or no authentication required then use new OAuth
if (!string.IsNullOrEmpty(OAuthAccessToken) || string.IsNullOrEmpty(AuthToken))
{
OAuthGetBasicParameters(parameters);
if (!string.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
}
var url = CalculateUri(parameters, !string.IsNullOrEmpty(sharedSecret));
lastRequest = url;
try
{
FlickrResponder.GetDataResponseAsync(this, BaseUri.AbsoluteUri, parameters, (r)
=>
{
var result = new FlickrResult <T>();
if (r.HasError)
{
result.Error = r.Error;
}
else
{
try
{
lastResponse = r.Result;
var settings = new XmlReaderSettings();
settings.IgnoreWhitespace = true;
XmlReader reader = XmlReader.Create(new StringReader(r.Result), settings);
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
continue;
}
reader.MoveToElement();
reader.Read();
var t = new T();
((IFlickrParsable)t).Load(reader);
result.Result = t;
result.HasError = false;
}
catch (Exception ex)
{
result.Error = ex;
}
}
if (callback != null)
{
callback(result);
}
});
}
catch (Exception ex)
{
var result = new FlickrResult <T>();
result.Error = ex;
if (null != callback)
{
callback(result);
}
}
}
private async Task <FlickrResult <T> > GetResponseAsync <T>(Dictionary <string, string> parameters) where T : IFlickrParsable, new()
{
var hashApiSig = CalculateAuthSignature(parameters);
CheckApiKey();
FlickrResult <T> result = new FlickrResult <T>();
var parseResult = new Func <Uri, string, T>((uri, response) =>
{
lastResponse = response;
XmlReaderSettings settings = new XmlReaderSettings();
settings.IgnoreWhitespace = true;
XmlReader reader = XmlReader.Create(new StringReader(response.Trim()), settings);
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
continue;
}
reader.MoveToElement();
reader.Read();
T t = new T();
((IFlickrParsable)t).Load(reader);
return(t);
});
parameters["api_key"] = ApiKey;
if (!String.IsNullOrEmpty(OAuthAccessToken) || String.IsNullOrEmpty(AuthToken))
{
OAuthGetBasicParameters(parameters);
parameters.Remove("api_key");
if (!String.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
Uri url;
if (!String.IsNullOrEmpty(sharedSecret))
{
url = CalculateUri(parameters, true);
}
else
{
url = CalculateUri(parameters, false);
}
lastRequest = url.AbsoluteUri;
//get cached result if its there
var cachedResult = TryGetCacheCall(hashApiSig);
if (!string.IsNullOrEmpty(cachedResult))
{
result.Result = parseResult(url, cachedResult);
result.HashCall = hashApiSig;
result.HasError = false;
return(result);
}
try
{
var r = await FlickrResponder.GetDataResponseAsync(this, hashApiSig, BaseUri.AbsoluteUri, parameters);
if (r.HasError)
{
result.Error = r.Error;
}
else
{
//cache results
CacheCall(r.HashCall, r.Result);
result.Result = parseResult(url, r.Result);
result.HashCall = r.HashCall;
result.HasError = false;
}
}
catch (Exception ex)
{
result.Error = ex;
}
return(result);
}
