public async Task <IActionResult> Callback([FromQuery] string code, [FromQuery] string state, [FromQuery] string error)
{
if (!string.IsNullOrEmpty(error))
{
_logger.LogError("Error during spotify authorization: {error}", error);
return(new StatusCodeResult(500));
}
List <KeyValuePair <string, string> > content = new List <KeyValuePair <string, string> >
{
KeyValuePair.Create("grant_type", "authorization_code"),
KeyValuePair.Create("code", code),
KeyValuePair.Create("redirect_uri", _spotifyConfiguration.RedirectUri),
KeyValuePair.Create("client_id", _spotifyConfiguration.ClientId),
KeyValuePair.Create("client_secret", _spotifyConfiguration.ClientSecret)
};
FormUrlEncodedContent formContent = new FormUrlEncodedContent(content);
HttpResponseMessage response = await _httpClient.PostAsync("https://accounts.spotify.com/api/token", formContent);
if (!response.IsSuccessStatusCode)
{
_logger.LogError("Error during spotify authorization: {error} {message}", response.StatusCode, await response.Content.ReadAsStringAsync());
return(new StatusCodeResult(500));
}
string stringResponse = await response.Content.ReadAsStringAsync();
JsonSerializerOptions options = new JsonSerializerOptions()
{
PropertyNameCaseInsensitive = true
};
SpotifyAuthResponse authResponse = JsonSerializer.Deserialize <SpotifyAuthResponse>(stringResponse, options);
IdentityUser user = new IdentityUser("spotify");
await _signInManager.SignInAsync(user, true, "spotify");
_cache.SetString("spotify_access_token", authResponse.access_token, new DistributedCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(authResponse.expires_in - 30)
});
_cache.SetString("spotify_refresh_token", authResponse.refresh_token);
return(View("SpotifyCallback", authResponse));
}
private async Task <string> RefreshToken(string refreshToken)
{
if (string.IsNullOrEmpty(refreshToken))
{
return(string.Empty);
}
List <KeyValuePair <string, string> > content = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("refresh_token", refreshToken),
new KeyValuePair <string, string>("grant_type", "refresh_token")
};
using HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "https://api.fitbit.com/oauth2/token")
{
Content = new FormUrlEncodedContent(content)
};
request.Headers.Add("Authorization", EncodeHeader(_spotifyConfiguration.ClientId, _spotifyConfiguration.ClientSecret));
HttpResponseMessage response = await _httpClient.SendAsync(request);
string stringResponse = await response.Content.ReadAsStringAsync();
JsonSerializerOptions options = new JsonSerializerOptions()
{
PropertyNameCaseInsensitive = true
};
SpotifyAuthResponse authResponse = JsonSerializer.Deserialize <SpotifyAuthResponse>(stringResponse, options);
_cache.SetString("spotify_access_token", authResponse.access_token, new DistributedCacheEntryOptions
{
AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(authResponse.expires_in - 30)
});
return(authResponse.access_token);
}