/// <summary>
/// Makes call for Access Token
/// </summary>
/// <param name="response">Response string containing 'code' token, used for getting access token</param>
/// <returns></returns>
private async Task <bool> Authorize(string response)
{
try
{
string responseData = response.Substring(response.IndexOf("code"));
string[] keyValPairs = responseData.Split('=');
string code = keyValPairs[1].Split('&')[0];
string clientId = await AppCredentials.GetAppKey();
string appSecret = await AppCredentials.GetAppSecret();
var request = new OauthTokenRequest(clientId, appSecret, code);
var token = await client.Oauth.CreateAccessToken(request);
if (token != null)
{
client.Credentials = new Credentials(token.AccessToken);
await SaveToken(token.AccessToken, clientId);
}
return(true);
}
catch
{
return(false);
}
}
/// <summary>
/// Opens OAuth window using WebAuthenticationBroker class and returns true is authentication is successful
/// </summary>
/// <returns></returns>
public async Task <bool> Authenticate()
{
try
{
string clientId = await AppCredentials.GetAppKey();
OauthLoginRequest request = new OauthLoginRequest(clientId)
{
Scopes = { "user", "repo" },
};
Uri oauthLoginUrl = client.Oauth.GetGitHubLoginUrl(request);
WebAuthenticationResult res = await WebAuthenticationBroker.AuthenticateAsync(WebAuthenticationOptions.None, oauthLoginUrl, endUri);
if (res.ResponseStatus == WebAuthenticationStatus.Success)
{
var response = res.ResponseData;
return(await Authorize(response));
}
else
{
return(false);
}
}
catch
{
return(false);
}
}
/// <summary>
/// Gets Access token if stored in device
/// </summary>
/// <returns></returns>
public static async Task <string> GetToken()
{
try
{
string clientId = await AppCredentials.getAppKey();
var vault = new PasswordVault();
var credentialList = vault.FindAllByResource(clientId);
if (credentialList.Count > 0)
{
credentialList[0].RetrievePassword();
return(credentialList[0].Password);
}
else
{
return(null);
}
}
catch
{
return(null);
}
}
/// <summary>
/// Deletes the access token from user's device
/// </summary>
/// <returns></returns>
public static async Task <bool> signOut()
{
try
{
string clientId = await AppCredentials.getAppKey();
var vault = new PasswordVault();
var credentialList = vault.FindAllByResource(clientId);
if (credentialList.Count > 0)
{
vault.Remove(credentialList[0]);
}
return(true);
}
catch
{
return(false);
}
}