extends Node2D

const PICKUP_RADIUS := 48.0
const ATTRACTION_RADIUS := 150.0
var item: ItemInstance
var _player: CharacterBody2D
var _label: Label
var _glow_time := 0.0

func _ready() -> void:
	add_to_group("loot")
	_player = get_parent().get_node_or_null("PlayerShip") as CharacterBody2D
	_label = Label.new()
	_label.position = Vector2(-110, 18)
	_label.size = Vector2(220, 44)
	_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	_label.add_theme_font_size_override("font_size", 11)
	_label.add_theme_color_override("font_color", Color("f1f4f8"))
	_label.text = item.definition.display_name
	add_child(_label)
	z_index = 18
	set_process(item.get_addon_count() >= 5)
	queue_redraw()

func _process(delta: float) -> void:
	_glow_time += delta
	queue_redraw()

func _draw() -> void:
	if item == null:
		return
	if item.get_addon_count() >= 5:
		_draw_legendary_glow()
	var border := Color("70f5df") if item.definition.category == ItemDefinition.Category.CONSUMABLE else item.get_type_color()
	for radius in [28.0, 23.0, 19.0]:
		draw_circle(Vector2.ZERO, radius, Color(border, 0.07))
	draw_circle(Vector2.ZERO, 18.0, item.get_background_color())
	draw_arc(Vector2.ZERO, 19.0, 0.15, PI - 0.15, 32, border, 1.5, true)
	draw_arc(Vector2.ZERO, 19.0, PI + 0.15, TAU - 0.15, 32, border, 1.5, true)
	if item.definition.icon != null:
		draw_texture_rect(item.definition.icon, Rect2(-16, -16, 32, 32), false)

func _draw_legendary_glow() -> void:
	var gold := Color("ffbd68")
	var pulse := 0.85 + 0.15 * sin(_glow_time * 2.0)
	# Soft layered halo remains visible without requiring viewport bloom.
	for layer in range(12, 0, -1):
		var radius := 20.0 + float(layer) * 3.5
		draw_circle(Vector2.ZERO, radius, Color(gold, 0.012 * pulse))
	# A tapered pillar and a slowly turning broken ring mark a maximum-addon drop.
	for layer in range(6, 0, -1):
		var width := float(layer) * 2.2
		draw_polygon(PackedVector2Array([Vector2(-width, 0), Vector2(-width * 0.2, -94), Vector2(width * 0.2, -94), Vector2(width, 0)]), PackedColorArray([Color(gold, 0.025 * pulse), Color(gold, 0), Color(gold, 0), Color(gold, 0.025 * pulse)]))
	var angle := _glow_time * 0.25
	for segment in 3:
		var start := angle + float(segment) * TAU / 3.0
		draw_arc(Vector2.ZERO, 29.0, start, start + 1.25, 20, Color(gold, 0.42 * pulse), 1.0, true)

func _physics_process(delta: float) -> void:
	if not is_instance_valid(_player) or bool(_player.get("_is_destroyed")):
		return
	var distance := global_position.distance_to(_player.global_position)
	if distance > ATTRACTION_RADIUS:
		return
	var inventory := _player.get_node("ShipInventory") as ShipInventory
	if not inventory.can_add_item(item):
		_label.text = "%s\nMagazyn pełny" % item.definition.display_name
		return
	_label.text = item.definition.display_name
	if distance <= PICKUP_RADIUS:
		if inventory.add_item(item):
			set_physics_process(false)
			queue_free()
	else:
		global_position = global_position.move_toward(_player.global_position, 180.0 * delta)