public void ClearAudioPlayer()
{
Skill = ResponseBuilder.AudioPlayerClearQueue(ClearBehavior.ClearEnqueued);
}
public async Task <SkillResponse> FunctionHandler(SkillRequest input, ILambdaContext context)
{
var log = context.Logger;
// I use the following lines to log and validate my input
// but this isn't a requirement for the skill
//log.LogLine($"Skill Request Object...");
//log.LogLine(JsonConvert.SerializeObject(input));
SkillResponse returnResponse = new SkillResponse();
var audioItems = AudioAssets.GetSampleAudioFiles();
// initialize a connection to the database
// this also initialized the context for the DynamoDB helper
var audioStateHelper = new AudioStateHelper();
await audioStateHelper.VerifyTable();
string userId = "";
if (input.Session != null)
{
userId = input.Session.User.UserId;
}
else
{
userId = input.Context.System.User.UserId;
}
var lastState = await audioStateHelper.GetAudioState(userId);
var currentState = new AudioState()
{
UserId = userId
};
currentState.State = lastState.State;
// For an intent
if (input.GetRequestType() == typeof(LaunchRequest))
{
log.LogLine($"Default LaunchRequest made");
var output = new PlainTextOutputSpeech()
{
Text = "Welcome to the Alexa audio sample. "
+ "You can say, play the audio, to begin."
};
var reprompt = new Reprompt()
{
OutputSpeech = new PlainTextOutputSpeech()
{
Text = "You can say, play the audio, to begin."
}
};
returnResponse = ResponseBuilder.Ask(output, reprompt);
await audioStateHelper.SaveAudioState(currentState);
}
else if (input.GetRequestType() == typeof(IntentRequest))
{
var intentRequest = (IntentRequest)input.Request;
var output = new PlainTextOutputSpeech();
var reprompt = new Reprompt();
log.LogLine($"Triggered " + intentRequest.Intent.Name);
switch (intentRequest.Intent.Name)
{
case "PlayAudio":
currentState.State.Token = audioItems.FirstOrDefault().Title;
currentState.State.State = "PLAY_MODE";
currentState.State.Index = 0;
currentState.State.playOrder = new List <int> {
0, 1, 2, 3, 4
};
returnResponse = ResponseBuilder.AudioPlayerPlay(
PlayBehavior.ReplaceAll,
audioItems[currentState.State.Index].Url,
currentState.State.Token);
break;
case BuiltInIntent.Help:
output.Text = "You can say, play the audio, to begin.";
reprompt.OutputSpeech = new PlainTextOutputSpeech()
{
Text = "You can say, play the audio, to begin."
};
returnResponse = ResponseBuilder.Ask(output, reprompt);
break;
case BuiltInIntent.Cancel:
currentState.State.OffsetInMS = Convert.ToInt32(input.Context.AudioPlayer.OffsetInMilliseconds);
currentState.State.Token = input.Context.AudioPlayer.Token;
currentState.State.State = "PAUSE_MODE";
returnResponse = ResponseBuilder.AudioPlayerStop();
break;
case BuiltInIntent.Next:
var thisFile = lastState.State.Token;
// get the last state, get the index, add 1
// or start from the beginning if you're doing a loop
currentState.State.Index++;
if (currentState.State.Index >= audioItems.Count)
{
currentState.State.Index = 0;
}
currentState.State.Token = audioItems[currentState.State.Index].Title;
currentState.State.OffsetInMS = 0;
currentState.State.State = "PLAY_MODE";
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll,
audioItems[currentState.State.Index].Url,
currentState.State.Token);
break;
case BuiltInIntent.Previous:
// get the last state, get the index, subtract 1
currentState.State.Index = currentState.State.Index - 1;
if (currentState.State.Index < 0)
{
currentState.State.Index = 0;
}
currentState.State.Token = audioItems[currentState.State.Index].Title;
currentState.State.OffsetInMS = 0;
currentState.State.State = "PLAY_MODE";
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll,
audioItems[currentState.State.Index].Url,
currentState.State.Token);
break;
case BuiltInIntent.Repeat:
// get the last state, get the index, start over at offset = 0
currentState.State.Token = audioItems[currentState.State.Index].Title;
currentState.State.OffsetInMS = 0;
currentState.State.State = "PLAY_MODE";
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll,
audioItems[currentState.State.Index].Url,
currentState.State.Token,
0);
break;
case BuiltInIntent.StartOver:
// start everything from the beginning
currentState.State.Token = audioItems[0].Title;
currentState.State.OffsetInMS = 0;
currentState.State.State = "PLAY_MODE";
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll,
audioItems[0].Url,
currentState.State.Token,
0);
break;
case BuiltInIntent.Stop:
currentState.State.OffsetInMS = Convert.ToInt32(input.Context.AudioPlayer.OffsetInMilliseconds);
currentState.State.Token = input.Context.AudioPlayer.Token;
currentState.State.State = "PAUSE_MODE";
returnResponse = ResponseBuilder.AudioPlayerStop();
break;
case BuiltInIntent.Resume:
// Get the last state, start from the offest in milliseconds
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll,
audioItems[currentState.State.Index].Url,
currentState.State.Token,
currentState.State.OffsetInMS);
// If there was an enqueued item...
if (currentState.State.EnqueuedToken != null)
{
returnResponse.Response.Directives.Add(new AudioPlayerPlayDirective()
{
PlayBehavior = PlayBehavior.Enqueue,
AudioItem = new Alexa.NET.Response.Directive.AudioItem()
{
Stream = new AudioItemStream()
{
Url = audioItems[currentState.State.Index + 1].Url,
Token = audioItems[currentState.State.Index + 1].Title,
ExpectedPreviousToken = currentState.State.Token,
OffsetInMilliseconds = 0
}
}
});
}
currentState.State.EnqueuedToken = audioItems[currentState.State.Index + 1].Title;
currentState.State.State = "PLAY_MODE";
break;
case BuiltInIntent.Pause:
currentState.State.OffsetInMS = Convert.ToInt32(input.Context.AudioPlayer.OffsetInMilliseconds);
currentState.State.Token = input.Context.AudioPlayer.Token;
currentState.State.State = "PAUSE_MODE";
returnResponse = ResponseBuilder.AudioPlayerStop();
break;
default:
log.LogLine($"Unknown intent: " + intentRequest.Intent.Name);
output.Text = "Welcome to Pocast Player";
reprompt.OutputSpeech = new PlainTextOutputSpeech()
{
Text = "This is your reprompt. Please do something."
};
returnResponse = ResponseBuilder.TellWithReprompt(output, reprompt);
break;
}
}
else if (input.GetRequestType() == typeof(AudioPlayerRequest))
{
var audioRequest = input.Request as AudioPlayerRequest;
if (audioRequest.AudioRequestType == AudioRequestType.PlaybackStarted)
{
log.LogLine($"PlaybackStarted Triggered ");
// respond with Stop or ClearQueue
returnResponse = ResponseBuilder.AudioPlayerClearQueue(ClearBehavior.ClearEnqueued);
}
else if (audioRequest.AudioRequestType == AudioRequestType.PlaybackFinished)
{
// Audio comes to an end on its own
log.LogLine($"PlaybackFinished Triggered ");
if (currentState.State.EnqueuedToken != null)
{
int itemIndex = audioItems.IndexOf(audioItems.Where(i => i.Title == currentState.State.EnqueuedToken).FirstOrDefault());
currentState.State.Token = audioItems[itemIndex].Title;
currentState.State.Index = itemIndex;
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll,
audioItems[itemIndex].Url,
currentState.State.Token);
}
else
{
// respond with Stop or ClearQueue
returnResponse = ResponseBuilder.AudioPlayerClearQueue(ClearBehavior.ClearEnqueued);
}
}
else if (audioRequest.AudioRequestType == AudioRequestType.PlaybackStopped)
{
// This is when your audio is explicitly stopped
log.LogLine($"PlaybackStopped Triggered ");
currentState.State.State = "PAUSE_MODE";
currentState.State.Token = audioRequest.Token;
currentState.State.EnqueuedToken = audioRequest.EnqueuedToken;
currentState.State.OffsetInMS = Convert.ToInt32(audioRequest.OffsetInMilliseconds);
log.LogLine($"Saving AudioState: " + currentState.State.Token + " at " + currentState.State.OffsetInMS.ToString() + "ms");
returnResponse = null;
}
else if (audioRequest.AudioRequestType == AudioRequestType.PlaybackNearlyFinished)
{
log.LogLine($"PlaybackNearlyFinished Triggered ");
// we'll want to hand back the "next" item in the queue
// First we check to see if there is an enqueued item and, if there is
// we can respond with nothing
if (audioRequest.HasEnqueuedItem)
{
return(null);
}
// let's get the current token
var currentPlay = audioRequest.Token;
// get the index of that current item
int itemIndex = audioItems.IndexOf(audioItems.Where(i => i.Title == audioRequest.Token).FirstOrDefault());
if (itemIndex == -1)
{
log.LogLine($"Could not get the index of: " + audioRequest.Token);
}
itemIndex++;
if (itemIndex == audioItems.Count)
{
itemIndex = 0;
}
currentState.State.EnqueuedToken = audioItems[itemIndex].Title;
currentState.State.Token = audioRequest.Token;
// if there is not, we send a play intent with "ENQUEUE"
returnResponse = ResponseBuilder.AudioPlayerPlay(
PlayBehavior.Enqueue,
audioItems[itemIndex].Url,
currentState.State.EnqueuedToken,
currentState.State.Token,
0);
}
else if (audioRequest.AudioRequestType == AudioRequestType.PlaybackFailed)
{
log.LogLine($"PlaybackFailed Triggered");
// atm, we basically pretend nothing happened and play the first
// file again on a failure
// THIS IS A TERRIBLE SOLUTION
// Figure out a better one for your skill
currentState.State.Token = audioItems.FirstOrDefault().Title;
currentState.State.Index = 0;
currentState.State.State = "PLAY_MODE";
returnResponse = ResponseBuilder.AudioPlayerPlay(PlayBehavior.ReplaceAll, audioItems.FirstOrDefault().Url, currentState.State.Token);
}
}
// I use the following code to validate and log my outputs for
// later investigation
//log.LogLine($"Skill Response Object...");
//string responseJson = "no response is given";
//try
//{
// responseJson = JsonConvert.SerializeObject(returnResponse);
//}
//catch
//{
// log.LogLine(responseJson);
// return null;
//}
//log.LogLine(responseJson);
// Save our state
await audioStateHelper.SaveAudioState(currentState);
// return our response
return(returnResponse);
}
