PlaybackStatus in Mopidy node.js

General
1

I was wondering how to use the state described in the playbackStates documentation. According to the figure, there should be 3 states (playing, stopped, and paused), but the problem in my case is that when I use the PlaybackController’s getState()-method I get a state called pending. Is that another state not included in the state-diagram in the documentation?

I am also wondering how to use the PlaybackState in a node.js application. I want to do something like this:

if(mopidy.playback.getState() == mopidy.playback.state.STOPPED){
//do something
}

But I do not know how to use the class mopidy.core.PlaybackState in node. Any ideas?

2

Anyone who can help me with this one?
Maybe I should listen for events instead of asking for the state? Any feedback is appreciated.

3

Mopidy-MusicBox-Webclient uses Mopidy.js to make calls to the Mopidy core. I believe this is the canonical approach for HTTP clients, and may be a good place to start.

Some sample code for what I think you are trying to do is available here: https://github.com/pimusicbox/mopidy-musicbox-webclient/blob/7eea023310333dbfbae4bf1e846ef3dd8d029a7d/mopidy_musicbox_webclient/static/js/gui.js#L382

Subscribing to and responding on the events that Mopidy raises is generally a better approach than interrogating the core directly.

4

mopidy.playback.getState() is a function that have a async response:

mopidy.playback.getState().then(function(state){
// state is your state
});

:slight_smile:

5

Thank you for your replies. The answer provided are about how to use the getState() function, which is something I am doing as well. However, I want to do different things based on the state you are receiving, e.g the state is 'stopped' or 'playing' or anything else. Instead of:
if (state === 'stopped') //notice the quotes, the word may change in the future.
I would like to use the state variable which contains the value stopped.

6

Hello, i’m trying this simple code:

var Mopidy = require("mopidy");
var log=console.log;

var mopidy = new Mopidy({
    webSocketUrl: "ws://localhost:6680/mopidy/ws/"
});


mopidy.playback.getState().then(function(state){
  log (state);
});

but I get this error:

mopidy.playback.getState().then(function(state){
               ^

TypeError: Cannot read property 'getState' of undefined

Please advice, whats wrong?
Thank you

7

Hi!

mopidy.playback doesn’t exist before you’re connected to the server. If you wrap your code like this, so it doesn’t run until you’re connected, it should work:

mopidy.on('state:online', function () {
    mopidy.playback.getState().then(function (state) {
        console.log(state);
    });
});

See https://docs.mopidy.com/en/latest/api/js/ for the details.

8

ok, but how i can send mopidy.playback.play()?

can someone share example?
thank you

9

There’s an example of that in the docs: https://docs.mopidy.com/en/latest/api/js/#example-to-get-started-with