How to add multiple track to stream in alexa?

Question

I am working on alexa for the first time and I am developing a music app. I need to add multiple track of one artist and play it continuously. I am unable to do so. However, one song is working properly but unable to add and play multiple song.

Here is my code,

$response = '{
        "version" : "1.0",

        "response" : {
            "outputSpeech": {
              "type": "PlainText",
              "text": "Playing song for Acon"
            },
            '.$card.',
            "directives": [
              {
                "type": "AudioPlayer.Play",
                "playBehavior": "REPLACE_ALL",
                "audioItem": {
                  "stream": {
                "token": "track1",
                "url": "https://p.scdn.co/mp3-preview/9153bcc4d7bef50eb80a809fa34e694f2854e539?cid=null",
                "offsetInMilliseconds": 0
                  }
                }
              }
            ],
            "shouldEndSession" : true
        }
    }';

Answer 1

Follow the above doc: https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/custom-audioplayer-interface-reference#playbacknearlyfinished-request

and then do this to enqueue the second song

In PHP, the way you are handling other requests, you can handle AudioRequest too. For example.

$data       = file_get_contents("php://input");
$jsonData   = json_decode($data);

if($jsonData->request->type === "AudioPlayer.PlaybackNearlyFinished")
{ 
    $response = '{
        "version" : "1.0",
        "response" : {
            "directives": [
              {
                "type": "AudioPlayer.Play",
                "playBehavior": "ENQUEUE",
                "audioItem": {
                  "stream": {
                "token": "track2",
                "expectedPreviousToken": "track1",
                "url": "Your URL",
                "offsetInMilliseconds": 3
                  }
                }
              }
            ],
            "shouldEndSession" : true
        }
    }';
    echo $response;
} 

This is the way you can handle all the AudioRequest.