extends Control

signal next_level_requested

@onready var next_button: Button = $Center/Panel/Contents/NextButton
@onready var buy_ammunition_button: Button = $Center/Panel/Contents/BuyAmmunitionButton
@onready var reset_skills_button: Button = $Center/Panel/Contents/ResetSkillsButton
@onready var services_label: Label = $Center/Panel/Contents/Services
@onready var status_label: Label = $Center/Panel/Contents/Status
@onready var panel: PanelContainer = $Center/Panel

var _inventory: ShipInventory
var planet: Node2D
var _open_tween: Tween

func _ready() -> void:
	next_button.pressed.connect(func() -> void: next_level_requested.emit())
	buy_ammunition_button.pressed.connect(_buy_ammunition)
	reset_skills_button.pressed.connect(_reset_skills)
	_inventory = get_tree().get_first_node_in_group("ship_inventory") as ShipInventory
	if _inventory:
		_inventory.ammunition_changed.connect(_refresh_ammunition_service)
	GameState.captain.changed.connect(_refresh_ammunition_service)
	_refresh_ammunition_service()

func show_services(at_level_cap: bool, portal_open: bool = false) -> void:
	_refresh_ammunition_service()
	next_button.disabled = at_level_cap or portal_open
	next_button.text = "OSIĄGNIĘTO OSTATNI UKŁAD" if at_level_cap else ("WORMHOLE OTWARTY" if portal_open else "IDŹ DO NASTĘPNEGO POZIOMU")
	status_label.text = "Wleć w wormhole, aby przejść dalej." if portal_open else "Układ bezpieczny. Usługi dostępne."
	if visible:
		return
	show()
	_position_at_planet()
	scale = Vector2(0.05, 1.0)
	_open_tween = create_tween()
	_open_tween.tween_property(self, "scale:x", 1.0, 0.2).set_trans(Tween.TRANS_CUBIC).set_ease(Tween.EASE_OUT)

func hide_services() -> void:
	if _open_tween != null and _open_tween.is_running():
		_open_tween.kill()
	hide()
	scale = Vector2.ONE

func _process(_delta: float) -> void:
	if visible:
		_position_at_planet()

func _position_at_planet() -> void:
	if not is_instance_valid(planet):
		return
	var canvas := get_viewport().get_canvas_transform()
	var planet_screen := canvas * planet.global_position
	var planet_radius := float(planet.get("radius")) * canvas.x.length()
	size = panel.get_combined_minimum_size()
	var viewport_size := get_viewport_rect().size
	var screen_right := viewport_size.x - 320.0
	var target := planet_screen + Vector2(planet_radius + 24.0, -size.y * 0.5)
	if target.x + size.x > screen_right:
		target.x = planet_screen.x - planet_radius - 24.0 - size.x
	position = Vector2(clampf(target.x, 8.0, maxf(8.0, screen_right - size.x)), clampf(target.y, 8.0, maxf(8.0, viewport_size.y - size.y - 80.0)))

func _refresh_ammunition_service() -> void:
	reset_skills_button.disabled = not GameState.captain.can_reset_skills()
	reset_skills_button.text = "RESET SKILLI — %d KREDYTÓW" % GameState.captain.get_skill_reset_cost()
	reset_skills_button.tooltip_text = "Zwraca wszystkie %d wydanych punktów nauki. Koszt: 100 kredytów × poziom kapitana." % GameState.captain.get_spent_learning_points()
	buy_ammunition_button.disabled = _inventory == null or not _inventory.can_buy_ammunition()
	if _inventory:
		buy_ammunition_button.text = "KUP %d AMUNICJI — %d KREDYTÓW" % [ShipInventory.AMMUNITION_BUY_AMOUNT, _inventory.get_ammunition_buy_cost()]
		services_label.text = "Amunicja: %d • Kredyty: %d\nCena: %d kredytów × poziom układu (%d)" % [_inventory.ammunition, GameState.captain.credits, ShipInventory.AMMUNITION_BUY_BASE_COST, GameState.system_level]

func _buy_ammunition() -> void:
	if visible and _inventory:
		_inventory.buy_ammunition()

func _reset_skills() -> void:
	if visible:
		GameState.captain.reset_skills()