public PhoneCallStateMachine(PhoneCall phoneCall)
{
_machine = new StateMachine <CallState, CallEvent>(() => phoneCall.State, state => phoneCall.State = state);
_machine.Configure(CallState.Idle)
.EventTransitionTo(CallEvent.CallerHookOff, CallState.Dialtone)
;
_machine.Configure(CallState.Dialtone)
.OnEnter(() => Console.WriteLine($"{phoneCall.Caller}: dialtone"))
.EventTransitionTo(CallEvent.DigitsEntered, CallState.Dialing)
.EventTransitionTo(CallEvent.CallerHookOn, CallState.Disconnected)
;
_machine.Configure(CallState.Dialing)
.OnEnter <string>(CallEvent.DigitsEntered, async digits =>
{
Console.WriteLine($"{phoneCall.Caller}: entered {digits}");
phoneCall.Callee += digits;
if (phoneCall.Callee.Length > _phoneNumberLength)
{
phoneCall.Callee = phoneCall.Callee.Substring(0, _phoneNumberLength);
}
if (phoneCall.Callee.Length == _phoneNumberLength)
{
await _machine.ProcessEventAsync(CallEvent.CalleeNumberComplete);
}
})
.EventTransitionToSelf(CallEvent.DigitsEntered)
.EventTransitionTo(CallEvent.CalleeNumberComplete, CallState.Ringing)
.EventTransitionTo(CallEvent.CallerHookOn, CallState.Disconnected)
;
_machine.Configure(CallState.Ringing)
.OnEnter(() => Console.WriteLine($"{phoneCall.Caller}: ringing {phoneCall.Callee}"))
.EventTransitionTo(CallEvent.CallerHookOn, CallState.Disconnected)
.EventTransitionTo(CallEvent.CalleeHookOff, CallState.Connected)
;
_machine.Configure(CallState.Connected)
.OnEnter(() =>
{
Console.WriteLine($"{phoneCall.Caller}: connected to {phoneCall.Callee}");
phoneCall.StartTime = DateTime.Now;
})
.OnExit(() => phoneCall.StopTime = DateTime.Now)
.EventTransitionTo(CallEvent.CallerHookOn, CallState.Disconnected)
.EventTransitionTo(CallEvent.CalleeHookOn, CallState.Disconnected)
;
_machine.Configure(CallState.Disconnected)
.OnEnter(CallEvent.CalleeHookOn, () => Console.WriteLine($"{phoneCall.Caller}: disconnected from {phoneCall.Callee} callee onhook duration {phoneCall.Duration.TotalSeconds} sec"))
.OnEnter(CallEvent.CallerHookOn, () => Console.WriteLine($"{phoneCall.Caller}: disconnected from {phoneCall.Callee} caller onhook duration {phoneCall.Duration.TotalSeconds} sec"))
;
_machine.OnUnhandledEvent((evt, state) => Console.WriteLine($"{phoneCall.Caller}: cannot handle {evt} in state {state}"));
}
static async Task Main(string[] args)
{
PhoneCall phoneCall = new PhoneCall("123456789");
PhoneCallStateMachine machine = new PhoneCallStateMachine(phoneCall);
(string cmd, CallEvent evt)[] commands = new[]
