# HUD.gd
# Verwaltet die Spieler-UI: HP-Leiste, XP-Leiste, Aktionsleiste (Slots 1-9)
extends CanvasLayer

signal slot_clicked(slot_index: int)

@onready var health_bar = $Control/HealthBar
@onready var health_label = $Control/HealthBar/HealthLabel

# Level/XP UI (wird dynamisch erstellt)
var level_label: Label
var xp_bar: ProgressBar
var gold_label: Label
@onready var action_slots = [
	$Control/ActionBar/A1,
	$Control/ActionBar/A2,
	$Control/ActionBar/A3,
	$Control/ActionBar/A4,
	$Control/ActionBar/A5,
	$Control/ActionBar/A6,
	$Control/ActionBar/A7,
	$Control/ActionBar/A8,
	$Control/ActionBar/A9
]

var active_slot = 0
var slot_icons = [] # TextureRect nodes für Icons
var slot_cooldown_overlays = [] # ColorRect für Cooldown-Anzeige
var slot_cooldown_labels = [] # Label für Cooldown-Text

func _ready():
	_create_level_ui()

	for i in range(9):
		# Icon erstellen
		var icon = TextureRect.new()
		icon.name = "Icon"
		icon.expand_mode = TextureRect.EXPAND_FIT_WIDTH_PROPORTIONAL
		icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
		icon.custom_minimum_size = Vector2(40, 40)
		icon.position = Vector2(5, 5)
		action_slots[i].add_child(icon)
		slot_icons.append(icon)

		# Cooldown-Overlay erstellen (dunkle Überlagerung)
		var cooldown_overlay = ColorRect.new()
		cooldown_overlay.name = "CooldownOverlay"
		cooldown_overlay.color = Color(0, 0, 0, 0.7)
		cooldown_overlay.size = Vector2(50, 50)
		cooldown_overlay.position = Vector2(0, 0)
		cooldown_overlay.visible = false
		cooldown_overlay.mouse_filter = Control.MOUSE_FILTER_IGNORE
		action_slots[i].add_child(cooldown_overlay)
		slot_cooldown_overlays.append(cooldown_overlay)

		# Cooldown-Text erstellen
		var cooldown_label = Label.new()
		cooldown_label.name = "CooldownLabel"
		cooldown_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
		cooldown_label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
		cooldown_label.size = Vector2(50, 50)
		cooldown_label.position = Vector2(0, 0)
		cooldown_label.add_theme_font_size_override("font_size", 16)
		cooldown_label.visible = false
		cooldown_label.mouse_filter = Control.MOUSE_FILTER_IGNORE
		action_slots[i].add_child(cooldown_label)
		slot_cooldown_labels.append(cooldown_label)

		# Button für Klicks erstellen
		var button = Button.new()
		button.name = "SlotButton"
		button.flat = true
		button.size = Vector2(50, 50)
		button.position = Vector2(0, 0)
		button.modulate = Color(1, 1, 1, 0) # Unsichtbar
		var slot_index = i
		button.pressed.connect(func(): _on_slot_clicked(slot_index))
		action_slots[i].add_child(button)

# Slot-Klick Handler
func _on_slot_clicked(slot_index: int):
	set_active_slot(slot_index)
	slot_clicked.emit(slot_index)

# Icon für einen Slot setzen
func set_slot_icon(slot_index: int, icon_path: String):
	if slot_index >= 0 and slot_index < 9:
		var texture = load(icon_path)
		if texture:
			slot_icons[slot_index].texture = texture
		else:
			print("Icon nicht gefunden: ", icon_path)

# Cooldown für einen Slot anzeigen (remaining_time in Sekunden)
func set_slot_cooldown(slot_index: int, remaining_time: float):
	if slot_index < 0 or slot_index >= 9:
		return

	if remaining_time > 0:
		slot_cooldown_overlays[slot_index].visible = true
		slot_cooldown_labels[slot_index].visible = true
		slot_cooldown_labels[slot_index].text = "%.1f" % remaining_time
	else:
		slot_cooldown_overlays[slot_index].visible = false
		slot_cooldown_labels[slot_index].visible = false

# Level/XP UI erstellen
func _create_level_ui():
	var control = $Control

	# Level Label
	level_label = Label.new()
	level_label.name = "LevelLabel"
	level_label.position = Vector2(20, 55)
	level_label.add_theme_font_size_override("font_size", 14)
	level_label.text = "Level 1"
	control.add_child(level_label)

	# XP Bar
	xp_bar = ProgressBar.new()
	xp_bar.name = "XPBar"
	xp_bar.position = Vector2(80, 55)
	xp_bar.size = Vector2(140, 18)
	xp_bar.show_percentage = false
	xp_bar.value = 0

	# XP Bar Farbe (blau)
	var xp_style = StyleBoxFlat.new()
	xp_style.bg_color = Color(0.2, 0.4, 0.9, 1.0)
	xp_bar.add_theme_stylebox_override("fill", xp_style)

	control.add_child(xp_bar)

	# Gold Label
	gold_label = Label.new()
	gold_label.name = "GoldLabel"
	gold_label.position = Vector2(20, 78)
	gold_label.add_theme_font_size_override("font_size", 14)
	gold_label.add_theme_color_override("font_color", Color(1, 0.85, 0, 1))
	gold_label.text = "0 Gold"
	control.add_child(gold_label)

# Gold aktualisieren
func update_gold(amount: int):
	if gold_label:
		gold_label.text = str(amount) + " Gold"

# HP-Leiste und Text aktualisieren
func update_health(current_hp, max_hp):
	health_bar.max_value = max_hp
	health_bar.value = current_hp
	health_label.text = str(current_hp) + " / " + str(max_hp)

# Level und XP aktualisieren
func update_level(level: int, current_xp: int, xp_to_next: int):
	if level_label:
		level_label.text = "Lv " + str(level)
	if xp_bar:
		xp_bar.max_value = xp_to_next
		xp_bar.value = current_xp

# Aktions-Slot kurz golden hervorheben (0.1s)
func set_active_slot(index):
	action_slots[active_slot].self_modulate = Color(1, 1, 1)
	active_slot = index
	action_slots[active_slot].self_modulate = Color(1, 0.8, 0)
	await get_tree().create_timer(0.1).timeout
	action_slots[active_slot].self_modulate = Color(1, 1, 1)