class_name ConsideringIndicator
extends Node
## Thin node shim (charter §13). While a call is in flight it rotates an authored
## ConsideringPhrases line onto a Label every ROTATE_SECONDS, reframing the wait
## as the GM thinking. The phrase logic is the pure, tested ConsideringPhrases;
## the Timer/tree wiring here is the untested shim (verified by running the
## harness). One instance persists on the harness so the rotation index is not
## reset per call (spec decision 4).

const ROTATE_SECONDS := 3.0

var _phrases: ConsideringPhrases
var _timer: Timer
var _label: Label


func _init(phrases: ConsideringPhrases = null) -> void:
	_phrases = phrases if phrases != null else ConsideringPhrases.new()


func _ready() -> void:
	_timer = Timer.new()
	_timer.wait_time = ROTATE_SECONDS
	_timer.one_shot = false
	_timer.timeout.connect(_advance)
	add_child(_timer)


func start(label: Label) -> void:
	_label = label
	_advance()  # show a phrase immediately, don't wait ROTATE_SECONDS
	_timer.start()


func stop() -> void:
	_timer.stop()
	if _label != null:
		_label.text = ""
		_label = null


func _advance() -> void:
	if _label != null:
		_label.text = _phrases.next()