/// <summary>
/// Throws an <see cref="UnexpectedHttpException"/> if the response
/// is not a 2xx.
/// </summary>
/// <param name="response">Response to check</param>
/// <returns>A task that is completed or faulted depending on
/// the status.</returns>
public static async Task ThrowInvalidContentsAsync(HttpResponseMessage response)
{
if ((int)response.StatusCode >= 300)
{
throw await HttpHelpers.CreateExceptionFromResponse(response);
}
}
/// <summary>
/// Attempts to retrieve a single OAuth shortcode from the server.
/// </summary>
/// <param name="cancellationToken">Optional cancellation for the operation</param>
/// <returns>A task that resolves to the retrieved code.</returns>
/// <exception cref="OAuthException">If there was an error granting
/// access. This can occur if your client ID is incorrect, for instance,
/// or if the user denies access. The <code>Response.Error</code>
/// property can tell you more about what went wrong.</exception>
/// <exception cref="UnexpectedHttpException">If some unknown
/// error occurred.</exception>
public async Task <OAuthShortcode> GetSingleCodeAsync(CancellationToken cancellationToken = default(CancellationToken))
{
var body = HttpHelpers.JsonContent(
new
{
scope = string.Join(" ", this.options.Scopes),
client_secret = this.options.ClientSecret,
client_id = this.options.ClientId
});
var response = await this.options.Client.PostAsync(
$"{this.options.Host}/api/v1/oauth/shortcode",
body,
cancellationToken);
using (response)
{
await HttpHelpers.ThrowInvalidContentsAsync(response);
var parsed = JsonConvert.DeserializeObject <ShortcodeCreateResponse>(
await response.Content.ReadAsStringAsync());
return(new OAuthShortcode(this.options, parsed));
}
}
/// <summary>
/// Refreshes the set of OAuth tokens.
/// </summary>
/// <param name="tokens">Previously granted tokens</param>
/// <param name="cancellationToken">Cancellation token for the operation</param>
/// <returns>A new set of tokens.</returns>
/// <exception cref="OAuthException">If there was an error granting
/// access. This can occur if your client ID is incorrect, for instance,
/// or your refresh token is invalid. The <code>Response.Error</code>
/// property can tell you more about what went wrong.</exception>
/// <exception cref="UnexpectedHttpException">If some unknown
/// error occurred.</exception>
/// <exception cref="TaskCanceledException">If the cancellation
/// token fires.</exception>
public async Task <OAuthTokens> RefreshAsync(OAuthTokens tokens, CancellationToken cancellationToken = default(CancellationToken))
{
var content = HttpHelpers.JsonContent(
new
{
grant_type = "refresh_token",
refresh_token = tokens.RefreshToken,
client_id = this.options.ClientId
});
var response = await this.options.Client.PostAsync(
$"{this.options.Host}/api/v1/oauth/token",
content,
cancellationToken);
using (response)
{
await HttpHelpers.ThrowInvalidContentsAsync(response);
return(new OAuthTokens(
JsonConvert.DeserializeObject <OAuthTokenResponse>(await response.Content.ReadAsStringAsync()),
tokens.Scopes));
}
}