public async Task AuthenticateUserAsync(string clientId,
string clientSecret,
string localIp,
SemaphoreSlim semaphore,
CancellationToken cancellationToken)
{
await semaphore.WaitAsync();
cancellationToken.ThrowIfCancellationRequested();
logger.LogInformation("Starting authentication process.");
// If we're authenticating for the first time, we want to clear out our tokens if they exist.
using (var context = contextProvider.GenerateContext <ISpotifyContext>(scopeFactory))
{
foreach (var token in context.Tokens)
{
context.Tokens.Remove(token);
}
await context.SaveChangesAsync(cancellationToken);
}
Scope[] scopes = new Scope[] {
Scope.UserLibraryModify,
Scope.UserReadPrivate,
Scope.UserReadEmail,
Scope.UserLibraryRead,
Scope.PlaylistModifyPublic
};
// Wrapper class for AuthorizationCodeAuth - Works better with inability to open a browser on pi.
Auth = new SpotifyAuthorizationCodeAuth(
clientId,
clientSecret,
$"http://{localIp}:4002",
$"http://{localIp}:4002",
scopes
);
logger.LogInformation($"id - {clientId}\n secret - {clientSecret}\n localIp - {localIp}\n scopes - {scopes}");
// Delegate for when the endpoint has been accessed/approved by user.
Auth.AuthReceived += async(sender, payload) =>
{
logger.LogInformation("Authentication received. Creating api object.");
Auth.Stop();
Token = await Auth.ExchangeCode(payload.Code);
RefreshToken = Token.RefreshToken;
// We got a new token, we save it.
using (var scope = scopeFactory.CreateScope())
{
var context = scope.ServiceProvider.GetService <ISpotifyContext>();
context.Tokens.Add((SpotifyToken)Token);
await context.SaveChangesAsync(cancellationToken);
}
// Denotes that we can refresh the token in the future.
IsAuthenticated = true;
semaphore.Release();
};
// Starts to listen using the auth endpoint.
Auth.Start();
var authString = Auth.CreateUri();
// This will do for now, but I'd like to have a better way of doing this.
// Logging it as an error makes it email the code to the provided user.
logger.LogError($"Spotify user is not authenticated. Please visit this link to authenticate:\n {authString}");
}
