@tool
extends Sprite2D
class_name Pawn

@export var Current_X_Position = 0
@export var Current_Y_Position = 0

# Item_Color = 0; White
# Item_Color = 1; Black
@export var Item_Color = 0

@export var Points = 1

var duration_label: Label
var Temp_Color = 0
var Double_Start = true
var En_Passant = false
const BASE_SIZE = Vector2(40, 40)
const CARD_TINT_COLOR = Color(0.3, 0.8, 0.3, 0.5)  # Green tint for card effects
const EFFECT_TINT_COLOR = Color(0.8, 0.2, 0.2, 0.5) 
var id: String = Utils.generate_guid()

func _ready():
	modulate = Color.WHITE if Item_Color == 0 else Color.BLACK

func _init() -> void:
	self.texture = load("res://addons/Chess/Textures/WPawn.svg")
	var background_style = StyleBoxFlat.new()
	background_style.bg_color = Color.WHITE
	background_style.corner_radius_top_left = 2
	background_style.corner_radius_top_right = 2
	background_style.corner_radius_bottom_left = 2
	background_style.corner_radius_bottom_right = 2
	background_style.content_margin_left = 2
	background_style.content_margin_right = 2
	background_style.content_margin_top = 1
	background_style.content_margin_bottom = 1
	duration_label = Label.new()
	duration_label.add_theme_stylebox_override("normal", background_style)
	duration_label.add_theme_color_override("font_color", Color.BLACK)
	duration_label.position = Vector2(-20, -20)  # Position above the piece
	add_child(duration_label)
	duration_label.hide()

func update_appearance() -> void:
	# print("update_appearance")
	if !is_instance_valid(get_tree()) || !get_tree().get_root().has_node("Board"):
		return
		
	var chess_game = get_tree().get_root().get_node("Board")
	if !chess_game.deckManager:
		return
		
	var deck_manager = chess_game.deckManager
	var has_card = deck_manager.attached_cards.has(get_instance_id())
	var has_effect = deck_manager.attached_effects.has(get_instance_id())
	var base_color = Color.WHITE if Item_Color == 0 else Color.BLACK

	if has_effect and deck_manager.attached_effects[get_instance_id()].size() > 0:
		modulate = base_color * ( EFFECT_TINT_COLOR)
	if has_card:
		# Apply tint while keeping the piece color
		modulate = base_color * CARD_TINT_COLOR
		
				
		# Update duration display
		var card = deck_manager.attached_cards[get_instance_id()]
		if is_instance_valid(duration_label):
			duration_label.text = str(card.remaining_turns)
			duration_label.show()
	else:
		# Reset to normal color
		modulate = Color.WHITE if Item_Color == 0 else Color.BLACK
		if is_instance_valid(duration_label):
			duration_label.hide()




func on_card_effect_changed() -> void:
	update_appearance()
# Movement interface method that all pieces will implement
# In Pawn.gd
func getValidMoves(board_flow, current_location: String) -> Dictionary:
	var moves = {
		"regular_moves": [],
		"special_moves": []
	}

	var loc = current_location.split("-")
	var x = int(loc[0])
	var y = int(loc[1])

	# Movement direction based on color
	var direction = -1 if Item_Color == 0 else 1

	# Forward movement
	var forward = str(x) + "-" + str(y + direction)
	if is_valid_cell(board_flow, forward) && can_move_to_cell(board_flow, forward):
		moves.regular_moves.append(forward)
		
		# Double move on first turn
		var double_forward = str(x) + "-" + str(y + (direction * 2))
		if Double_Start && is_valid_cell(board_flow, double_forward) && can_move_to_cell(board_flow, double_forward):
			moves.regular_moves.append(double_forward)

	# Diagonal captures
	for dx in [-1, 1]:
		var capture = str(x + dx) + "-" + str(y + direction)
		if is_valid_cell(board_flow, capture) && can_move_to_cell(board_flow, capture, true):
			moves.regular_moves.append(capture)
			
		# En Passant
		var adjacent = str(x + dx) + "-" + str(y)
		if is_valid_cell(board_flow, adjacent) && is_valid_cell(board_flow, capture):
			var adjacent_cell = board_flow.get_node(adjacent) as PieceContainer
			if adjacent_cell.get_piece() != null:
				var adjacent_piece = adjacent_cell.get_piece()
				if adjacent_piece.name == "Pawn" && adjacent_piece.En_Passant && adjacent_piece.Item_Color != self.Item_Color:
					moves.special_moves.append([adjacent, capture])

	return moves

# Helper method for all pieces
func is_valid_cell(board_flow, location: String) -> bool:
	var node = board_flow.get_node_or_null(location)
	return node != null

# Helper for checking if cell is empty or contains enemy
func can_move_to_cell(board_flow, location: String, is_capture: bool = false) -> bool:
	var container = board_flow.get_node(location) as PieceContainer
	if is_capture:
		var piece = container.get_piece()
		return piece != null && piece.Item_Color != self.Item_Color
	return !container.has_piece()