/// <summary>
/// Ends a call if it is still in progress
///
/// See: https://www.twilio.com/docs/voice/tutorials/how-to-modify-calls-in-progress-python .
/// </summary>
/// <param name="callSid">The SID of the call resource.</param>
/// <param name="log">A logger instance.</param>
/// <returns>A Task returning true if successful and false if failed.</returns>
public async Task <bool> HangupCallAsync(string callSid, ILogger log)
{
log.LogInformation($"Checking with Twilio to see if call '{callSid}' exists and is not completed...");
CallResource call = await FetchCallAsync(callSid, log);
if (call.Status != CallResource.StatusEnum.Completed)
{
log.LogInformation($"Attempting to hangup call '{callSid}'...");
await CallResource.UpdateAsync(callSid, status : CallResource.UpdateStatusEnum.Completed, client : _twilioClient);
return(true);
}
else
{
log.LogInformation($"Call '{callSid}' has already completed.");
return(false);
}
}