/// <summary>
/// From a call-back <paramref name="authorizationCode"/>, retrieve an
/// <see cref="AccessToken"/> to query the API with.
/// </summary>
/// <param name="context">The context in which to execute the request.</param>
/// <param name="authorizationCode">The authorisation code to create an <see cref="AccessToken"/> with.</param>
/// <returns>A populated <see cref="AccessToken"/>.</returns>
public async Task<AccessToken> GetAccessTokenAsync(IVisualStudioIntegrateContext context, string authorizationCode)
{
Guard.IsNot(
authorizationCode,
code => !string.IsNullOrEmpty(code),
"authorizationCode",
"To get an access token an authorization code must be supplied.");
var request = new Request<AccessTokenDto>
{
Method = HttpMethod.Post,
RequestUri = this._consumerApplication.AccessTokenUrl,
Content = new FormUrlEncodedContent(new Dictionary<string, string>
{
{ "grant_type", "urn:ietf:params:oauth:grant-type:jwt-bearer" },
{ "assertion", authorizationCode },
{ "redirect_uri", this._consumerApplication.CallbackUri.AbsoluteUri },
{ "client_assertion_type", "urn:ietf:params:oauth:client-assertion-type:jwt-bearer" },
{ "client_assertion", this._consumerApplication.ApplicationSecret }
})
};
var response = await context.ExecuteAsync(request);
var token = new AccessToken(
response.AccessToken,
response.ExpiresIn,
this._consumerApplication.AccessTokenUrl,
response.RefreshToken);
return token;
}
/// <summary>
/// Update the access code for an expired <see cref="AccessToken"/>.
/// </summary>
/// <param name="context">The context in which to execute the request.</param>
/// <param name="currentToken">The current identity information.</param>
/// <returns>A new <see cref="AccessToken"/>.</returns>
public async Task<AccessToken> RefreshAccessTokenAsync(IVisualStudioIntegrateContext context, AccessToken currentToken)
{
var request = new Request<AccessTokenDto>
{
Method = HttpMethod.Post,
RequestUri = this._consumerApplication.AccessTokenUrl,
Content = new FormUrlEncodedContent(new Dictionary<string, string>
{
{ "grant_type", "refresh_token" },
{ "assertion", currentToken.RefreshToken },
{ "redirect_uri", this._consumerApplication.CallbackUri.AbsoluteUri },
{ "client_assertion_type", "urn:ietf:params:oauth:client-assertion-type:jwt-bearer" },
{ "client_assertion", this._consumerApplication.ApplicationSecret }
})
};
var response = await context.ExecuteAsync(request);
var refreshedToken = new AccessToken(
response.AccessToken,
response.ExpiresIn,
this._consumerApplication.AccessTokenUrl,
response.RefreshToken);
return refreshedToken;
}