Figuring out how to trigger an event with discovery.launch to the homescreen

[nicolasperedoesquivel]

Hey all,

I'm trying to trigger an event as follows:

{ "jsonrpc": "2.0", "method": "discovery.launch", "params": { "appId": "app_name", "intent": { "action": "home", "context": { "source": "device" } } } }

And when I call it in the terminal as a cli command: node cli.mjs --event ../examples/discovery-onNavigateToHome.even.json I'm getting this response

You may want to create a .mf.config.json file for personal use. UserId: 12345 Sending event based on file ../examples/discovery-onNavigateToHome.even.json... { "status": "ERROR", "errorCode": "NO-EVENT-HANDLER-REGISTERED", "message": "Could not send discovery.launch event because no listener is active" }

Im listening to that event in my project as Discovery.launch(Discovery.events.launch, (intent = {}) => { console.log('intent', intent) })

I'm blocked on this since last week and I ran out of ideas. Can someone help me or give me a workaround of how to trigger a Discovery Launch event so I can open my app with deep link ?

[michaelcfine]

Hi there. Hmm... The NO-EVENT-HANDLER-REGISTERED error is returned when Mock Firebolt doesn't "know about" a corresponding event listener. Basically, that code prevents Mock Firebolt from sending the event to the Firebolt SDK running in a client app if there isn't an event listener setup in the app. It looks like you're trying to create a listener, but one thing I notice is that the first parameter to Discovery.launch is supposed to be a string (appId; see https://developer.comcast.com/firebolt-apis/core-sdk/v0.9.0/discovery#launch). More, I'm not sure you can catch the launch event; I don't see it as an actual event. One thing I might recommend is to try some other event (maybe closed captions settings changed) to confirm you've got the pattern down.

[nicolasperedoesquivel]

Hey, thanks for the response. I've also been testing the navigateTo event, and yes now I've noticed that Discovery module only have two events and launch isn't one of them. I trigger the event listener for navigateTo as I send this in the terminal: node cli.mjs --event ../examples/discovery-onNavigateToDetail.event.json

And the event listener is implemented this way:

Discovery.listen(Discovery.events.navigateTo, (intent = {}) => {
        console.log('intent in navigateTo listener', intent)
      })

This works but I have issues about the discovery launch as I don't know how to implement it through mock-firebolt. I want to do a deeplink from outside the app and open an entity or a screen inside my app. Btw, the code that I've posted in the beginning was awful. This is the current code that I have in my index.

Discovery.launch('app_id', {
        action: 'entity',
        context: { source: 'device' },
        data: { entityId: 'entity_id' },
      }).then((success) => {
        console.log(success)
      })

Best regards,