private async Task <TvDbClient> GetTvDbClient(string language)
{
var normalizedLanguage = TvdbUtils.NormalizeLanguage(language) ?? DefaultLanguage;
var tvDbClientInfo = _tvDbClients.GetOrAdd(normalizedLanguage, key => new TvDbClientInfo(_httpClientFactory, key));
var tvDbClient = tvDbClientInfo.Client;
// First time authenticating if the token was never updated or if it's empty in the client
if (tvDbClientInfo.TokenUpdatedAt == DateTime.MinValue || string.IsNullOrEmpty(tvDbClient.Authentication.Token))
{
await tvDbClientInfo.TokenUpdateLock.WaitAsync().ConfigureAwait(false);
try
{
if (string.IsNullOrEmpty(tvDbClient.Authentication.Token))
{
await tvDbClient.Authentication.AuthenticateAsync(ApiKey).ConfigureAwait(false);
tvDbClientInfo.TokenUpdatedAt = DateTime.UtcNow;
}
}
finally
{
tvDbClientInfo.TokenUpdateLock.Release();
}
}
// Refresh if necessary
if (tvDbClientInfo.TokenUpdatedAt < DateTime.UtcNow.Subtract(TimeSpan.FromHours(20)))
{
await tvDbClientInfo.TokenUpdateLock.WaitAsync().ConfigureAwait(false);
try
{
if (tvDbClientInfo.TokenUpdatedAt < DateTime.UtcNow.Subtract(TimeSpan.FromHours(20)))
{
try
{
await tvDbClient.Authentication.RefreshTokenAsync().ConfigureAwait(false);
}
catch
{
await tvDbClient.Authentication.AuthenticateAsync(ApiKey).ConfigureAwait(false);
}
tvDbClientInfo.TokenUpdatedAt = DateTime.UtcNow;
}
}
finally
{
tvDbClientInfo.TokenUpdateLock.Release();
}
}
return(tvDbClient);
}
private async Task <T> TryGetValue <T>(string key, string?language, Func <Task <T> > resultFactory)
{
if (_cache.TryGetValue(key, out T cachedValue))
{
return(cachedValue);
}
_tvDbClient.AcceptedLanguage = TvdbUtils.NormalizeLanguage(language) ?? DefaultLanguage;
var result = await resultFactory.Invoke().ConfigureAwait(false);
_cache.Set(key, result, TimeSpan.FromHours(1));
return(result);
}