Media.next
luastra/mediaMedia.next(): RequestId
Requests selection of the next item in the current queue according to host queue boundaries. The actual selected index and playback state arrive through media_state.
Before you use it
Add luastra/media to this module's dependencies in luastra.json, then import it with require("luastra/media"). Declare media.command in luastra.json. Set an admitted queue before playback, start playback from an explicit user action where required, and implement both app.resolve and media_state handling.
How it fits
The command returns a RequestId for acknowledgement. Actual playback truth arrives independently through app.handle("media_state", target, payload) and must be decoded before rendering.
When to use it
Use Media.next for an explicit Next control or a policy that advances after completion. Disable or explain the control when decoded media state shows that no next item is available.
Parameters
No parameters.
Returns
RequestId — an opaque request identifier used to correlate the asynchronous completion in app.resolve.
What happens next
A RequestId now, then command completion and subsequent decoded live-state updates when playback changes.
Failures and fixes
Missing capability, absent queue, invalid asset/content URI, autoplay policy, interruption, unsupported background behavior, or host failure must remain visible state. Do not optimistically treat command acknowledgement as playback success.
Availability
Public-source alpha API in 0.5.0-alpha; background playback and system controls require target-specific verification.
Focused example
local Media = require("luastra/media")
Media.next()