extends Control

# Spieler-Definitionen
const PLAYER_X = "X"
const PLAYER_O = "O"
const EMPTY = ""

var current_player = PLAYER_X
var game_over = false

# Referenzen zu den Nodes
@onready var board_grid = $Board
@onready var status_label = $StatusLabel
@onready var win_line = $WinLine

# Mapping von Numpad-Aktionen zu den Array-Indizes (0 bis 8)
var numpad_mapping = {
	"pad_7": 0, "pad_8": 1, "pad_9": 2,
	"pad_4": 3, "pad_5": 4, "pad_6": 5,
	"pad_1": 6, "pad_2": 7, "pad_3": 8
}

var buttons = []

# --- NEU: Beide Textur-Referenzen geladen ---
var circle_texture = load("res://res/Dornenkrone.png")      # Textur für O
var cross_texture = load("res://res/Rankenkreuz.png")       # Textur für X (Hier Pfad anpassen!)
# --------------------------------------------

var win_conditions = [
	[0, 1, 2], [3, 4, 5], [6, 7, 8],
	[0, 3, 6], [1, 4, 7], [2, 5, 8],
	[0, 4, 8], [2, 4, 6]
]

func _ready():
	board_grid.custom_minimum_size = Vector2(500, 500)
	buttons = board_grid.get_children()
	
	win_line.clear_points()
	
	for i in range(buttons.size()):
		buttons[i].size_flags_horizontal = Control.SIZE_EXPAND_FILL
		buttons[i].size_flags_vertical = Control.SIZE_EXPAND_FILL
		
		# Buttons komplett leeren (kein störender Text mehr)
		buttons[i].text = EMPTY
		
		# Finde die TextureRect-Node im Button und leere sie für den Start
		var piece_texture = buttons[i].get_node("PieceTexture")
		piece_texture.texture = null 
		
		buttons[i].pressed.connect(_on_button_pressed.bind(i))
		
	update_status_label()

func _input(event):
	if game_over:
		return
		
	for action in numpad_mapping.keys():
		if event.is_action_pressed(action):
			var index = numpad_mapping[action]
			
			var piece_texture = buttons[index].get_node("PieceTexture")
			if piece_texture.texture == null:
				make_move(index)

func _on_button_pressed(index):
	var piece_texture = buttons[index].get_node("PieceTexture")
	if game_over or piece_texture.texture != null:
		return
	make_move(index)

func make_move(index):
	var piece_texture = buttons[index].get_node("PieceTexture")
	
	# Weist jetzt je nach Spieler die korrekte Bild-Textur zu
	if current_player == PLAYER_O:
		piece_texture.texture = circle_texture
	else:
		piece_texture.texture = cross_texture
	
	var winning_combo = check_win()
	if winning_combo != null:
		status_label.text = "Spieler " + current_player + " hat gewonnen!"
		game_over = true
		animate_win_line(winning_combo)
	elif check_draw():
		status_label.text = "Unentschieden!"
		game_over = true
	else:
		current_player = PLAYER_O if current_player == PLAYER_X else PLAYER_X
		update_status_label()

func update_status_label():
	status_label.text = "Spieler " + current_player + " ist am Zug."

# Prüft den Gewinn vollautomatisch über die gesetzten Texturen
func check_win():
	for cond in win_conditions:
		var p0 = buttons[cond[0]].get_node("PieceTexture").texture
		var p1 = buttons[cond[1]].get_node("PieceTexture").texture
		var p2 = buttons[cond[2]].get_node("PieceTexture").texture
		
		if current_player == PLAYER_O:
			if p0 == circle_texture and p1 == circle_texture and p2 == circle_texture:
				return cond
		else:
			if p0 == cross_texture and p1 == cross_texture and p2 == cross_texture:
				return cond
	return null

# Prüft auf Unentschieden: Wenn alle Felder eine Textur haben, ist das Feld voll
func check_draw() -> bool:
	for button in buttons:
		var piece_texture = button.get_node("PieceTexture")
		if piece_texture.texture == null:
			return false
	return true

func get_button_center(button: Button) -> Vector2:
	return button.global_position + (button.size / 2)

func animate_win_line(combo: Array):
	var start_pos = get_button_center(buttons[combo[0]])
	var end_pos = get_button_center(buttons[combo[2]])
	var direction = (end_pos - start_pos).normalized()
	var padding = 40.0
	var extended_start = start_pos - (direction * padding)
	var extended_end = end_pos + (direction * padding)
	
	win_line.clear_points()
	win_line.add_point(extended_start)
	win_line.add_point(extended_start)
	
	var tween = create_tween()
	tween.tween_method(
		func(pos): win_line.set_point_position(1, pos),
		extended_start, 
		extended_end, 
		0.4
	).set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_OUT)