extends Label

# Polls GameState directly, same convention as ResourceReadout, so it stays
# correct without anyone having to push updates into it. Hidden entirely when
# the current planet has no garrison (e.g. no setup resolved for it) rather
# than showing "0/0".

# A direct script preload, not the bare "PlanetDefinitions" global class_name
# - the same load-order hazard PlanetSurfaceController's setup_host comment
# already documents: the global identifier is only guaranteed registered
# after an editor/import pass, a direct preload never depends on that.
const PLANET_DEFINITIONS = preload("res://planets/PlanetDefinitions.gd")

var _was_conquered: bool = false
var display_enabled: bool = true


func _process(_delta: float) -> void:
	if not display_enabled:
		visible = false
		return
	var planet_id: String = GameState.planet_id
	var total: int = GameState.garrison_total(planet_id)
	if total <= 0:
		visible = false
		return
	visible = true

	var conquered: bool = GameState.is_planet_conquered(planet_id)
	if conquered:
		# #76: a research_lab's whole reward is invisible otherwise - the
		# research point balance lives in a HUD number the player has no
		# reason to be watching at the exact moment it changes. Naming the
		# reward right on the same flash that already announces conquest
		# is the same "explain it where it happens" idiom BuildController
		# uses for a refused build.
		text = "CONQUERED - +1 RESEARCH POINT" \
			if GameState.planet_definition_id == PLANET_DEFINITIONS.RESEARCH_LAB_ID else "CONQUERED"
		if not _was_conquered:
			_flash()
	else:
		# #211: what is left to fight, counted down, rather than rings held.
		text = "GARRISON %d/%d" % [GameState.garrison_remaining(planet_id), total]
	_was_conquered = conquered


func _flash() -> void:
	modulate.a = 0.0
	var tween: Tween = create_tween()
	tween.tween_property(self, "modulate:a", 1.0, 1.2)