/// <summary>
/// The method makes an asynchronous request of the backend configuration data.
/// When the request is answered, the <see cref="OnConfigurationAvailable"/>
/// callback will be called.
/// The <see cref="BackendConfiguration"/> is cached in order to improve subsequent calls.
/// To clear cached configuration use the <see cref="ClearBackendConfig"/> method.
/// </summary>
/// <param name="onConfigurationAvailable">The callback called when the configuration is available</param>
public void RequestBackendConfig(OnConfigurationAvailable onConfigurationAvailable)
{
if (_backendConfig != null)
{
onConfigurationAvailable(_backendConfig);
return;
}
// Request
UnityWebRequest www;
// Check if other config request is running
if (_backendConfigRequest != null)
{
www = _backendConfigRequest.webRequest;
}
else
{
www = UnityWebRequest.Get(server + "/api/backend/configuration");
_backendConfigRequest = www.SendWebRequest();
}
_backendConfigRequest.completed += (_) => {
_backendConfigRequest = null;
#if UNITY_EDITOR
if (verbose)
{
Debug.Log("text: " + www.downloadHandler.text);
}
#endif
if (www.responseCode == 200)
{
_backendConfig = BackendConfiguration.CreateFromJSON(GetResultJSON(www.downloadHandler.text));
onConfigurationAvailable(_backendConfig);
}
else
{
string responseCodeMessage = $"Response Code: {www.responseCode}";
if (www.responseCode == 500)
{
responseCodeMessage += " - Internal server error.";
if (!string.IsNullOrEmpty(apiTokenString))
{
responseCodeMessage += "\nIf you are using simulator, consider not to use apiTokenString.";
}
}
Debug.LogError(responseCodeMessage);
throw new System.Exception(responseCodeMessage);
}
};
}
private void Awake()
{
_instance = this;
_backendConfig = null;
}
public void ClearBackendConfig()
{
_backendConfig = null;
_backendConfigRequest?.webRequest?.Dispose();
_backendConfigRequest = null;
}