private async Task <Token> RefreshToken(OAuthUserCredential user, string refreshToken)
{
Token token = null;
var payload = new Dictionary <string, string>
{
{ "client_id", user.ClientId },
{ "client_secret", user.ClientSecret },
{ "refresh_token", refreshToken },
{ "grant_type", "refresh_token" }
};
var content = new FormUrlEncodedContent(payload);
var client = _clientFactory.CreateClient();
var response = await client.PostAsync(user.TokenUri, content);
response.EnsureSuccessStatusCode();
if (response.IsSuccessStatusCode)
{
var jsonResponse = await response.Content.ReadAsStringAsync();
token = JsonSerializer.Deserialize <Token>(jsonResponse);
token.RefreshToken = refreshToken;
var jsonString = JsonSerializer.Serialize(token);
string fileName = System.IO.Path.Combine(_hostingEnvironment.ContentRootPath, TOKEN_FILE);
await System.IO.File.WriteAllTextAsync(fileName, jsonString, Encoding.UTF8);
}
return(token);
}
private async Task <TokenResponse> FetchToken(OAuthUserCredential user)
{
var token = JsonSerializer.Deserialize <Token>(System.IO.File.ReadAllText(TOKEN_FILE));
var isValid = await IsValid(token.AccessToken);
if (!isValid)
{
token = await RefreshToken(user, token.RefreshToken);
}
var tokenResponse = new TokenResponse
{
AccessToken = token.AccessToken,
RefreshToken = token.RefreshToken,
Scope = token.Scope,
TokenType = token.TokenType
};
return(tokenResponse);
}
