extends Node

# PlayerActionManager - Handles action points, highlights, and visual feedback

var player: Node3D
var enhanced_gridmap: Node
var highlighted_cells = [] # List of positions
# highlight_restore_items no longer needed for Layer 2

func initialize(p_player: Node3D, p_gridmap: Node):
	player = p_player
	enhanced_gridmap = p_gridmap

func consume_action_points(_points: int):
	# Action points are no longer used (real-time mode only).
	# Kept as a no-op stub so call sites don't need mass refactoring.
	after_action_completed()

func after_action_completed():
	# Guard against recursive calls
	if player._is_processing_action:
		return
	player._is_processing_action = true
	
	if player.is_multiplayer_authority():
		player.update_finish_availability()
	
	# Clear the highlights after placing the tiles. (Quickfix for Clientside)
	clear_highlights()
	
	# Only update UI if this is the LOCAL HUMAN PLAYER
	# Guard against stale callbacks after peer teardown (host quitting solo match)
	if not multiplayer.has_multiplayer_peer():
		player._is_processing_action = false
		return
	if multiplayer.get_unique_id() == player.get_multiplayer_authority():
		# Sync playerboard (Bots DO need to sync their board logic, just not update local UI)
		if player.is_multiplayer_authority() and player.has_method("can_rpc") and player.can_rpc():
			var main = player.get_tree().get_root().get_node_or_null("Main")
			if main:
				main.rpc("sync_playerboard", player.name.to_int(), player.playerboard)
	
	player._is_processing_action = false

# =============================================================================
# Highlight Operations
# =============================================================================

func highlight_cells_if_authorized(cells_to_highlight: Array, item_id: int = -1):
	if not player.is_multiplayer_authority() or player.is_bot or player.is_in_group("Bots"):
		return
		
	# Start with fresh highlights if logical state changes?
	# But dragging mouse calls this every frame. We need to clear previous calls.
	# The simplistic clear_highlights() clears ALL highlights. 
	# Which is fine for targeting mode as we only highlight the target area.
	clear_highlights()
	
	var highlight_item = item_id if item_id != -1 else enhanced_gridmap.hover_item
	
	for cell in cells_to_highlight:
		highlighted_cells.append(cell)
		# Use Layer 2 for overlay highlights (prevents overwriting Execution on Layer 0)
		enhanced_gridmap.set_cell_item(
			Vector3i(cell.x, 2, cell.y),
			highlight_item
		)

func highlight_empty_adjacent_cells():
	if player.is_bot == true or player.is_in_group("Bots"):
		return
		
	# Debug print
	print("Highlighting empty adjacent cells. Current position: ", player.current_position)
	
	# Clear previous highlights
	clear_highlights()
	
	# Highlight current position if empty
	var current_cell = Vector3i(player.current_position.x, 1, player.current_position.y)
	if enhanced_gridmap.get_cell_item(current_cell) == -1:
		highlighted_cells.append(player.current_position)
		# Set on Layer 2 (Overlay)
		enhanced_gridmap.set_cell_item(Vector3i(player.current_position.x, 2, player.current_position.y),
			enhanced_gridmap.hover_item)
		print("Highlighted current position: ", player.current_position)
	
	# Highlight empty adjacent cells
	var neighbors = enhanced_gridmap.get_neighbors(player.current_position, 0)
	for neighbor in neighbors:
		if neighbor.is_walkable:
			var cell_pos = neighbor.position
			var cell = Vector3i(cell_pos.x, 1, cell_pos.y)
			if enhanced_gridmap.get_cell_item(cell) == -1: # Check if cell is empty
				highlighted_cells.append(cell_pos)
				# Set on Layer 2 (Overlay)
				enhanced_gridmap.set_cell_item(Vector3i(cell_pos.x, 2, cell_pos.y),
					enhanced_gridmap.hover_item)
				print("Highlighted adjacent cell: ", cell_pos)

func highlight_random_valid_cells():
	if player.is_bot == true or player.is_in_group("Bots") or not player.is_multiplayer_authority():
		return

	clear_highlights()
	
	# First check the current position
	var current_cell = Vector3i(player.current_position.x, 1, player.current_position.y)
	var current_item = enhanced_gridmap.get_cell_item(current_cell)
	if current_item != -1:
		highlighted_cells.append(player.current_position)
		# Set on Layer 2 (Overlay)
		enhanced_gridmap.set_cell_item(Vector3i(player.current_position.x, 2, player.current_position.y),
			enhanced_gridmap.hover_item)
	
	# Then check all adjacent cells for items
	var neighbors = enhanced_gridmap.get_neighbors(player.current_position, 0)
	for neighbor in neighbors:
		if neighbor.is_walkable:
			var cell_pos = neighbor.position
			var cell = Vector3i(cell_pos.x, 1, cell_pos.y)
			if enhanced_gridmap.get_cell_item(cell) != -1: # Only highlight cells with items
				highlighted_cells.append(cell_pos)
				# Set on Layer 2 (Overlay)
				enhanced_gridmap.set_cell_item(Vector3i(cell_pos.x, 2, cell_pos.y),
					enhanced_gridmap.hover_item)

func highlight_occupied_playerboard_slots():
	if player.is_bot == true or player.is_in_group("Bots") or not player.is_multiplayer_authority():
		return
		
	var main = player.get_tree().get_root().get_node_or_null("Main")
	if not main or not main.ui_manager.playerboard_ui:
		return
		
	# First reset all slots to normal
	for i in range(player.playerboard.size()):
		var slot = main.ui_manager.playerboard_ui.get_child(i)
		for child in slot.get_children():
			child.hide()
	
	# Highlight occupied slots that match goals
	for i in range(player.playerboard.size()):
		if player.playerboard[i] in player.goals:
			var slot = main.ui_manager.playerboard_ui.get_child(i)
			if slot.get_child_count() > 0:
				slot.get_child(0).show() # Show highlight for matching items
			highlighted_cells.append(i) # Add to highlighted cells for tracking

	# Update the UI to reflect changes
	main.ui_manager.update_playerboard_ui()


func clear_highlights():
	# Never allow bots to clear highlights for human players
	if player.is_bot or player.is_in_group("Bots"):
		return
		
	if not enhanced_gridmap or not player.is_multiplayer_authority():
		return

	# Clear highlights normally
	var main = player.get_tree().get_root().get_node_or_null("Main")
	
	var hover_id = enhanced_gridmap.hover_item
	
	for cell in highlighted_cells:
		if cell is Vector2i:
			# Check Layer 2 (Overlay Highlight)
			var l2_pos = Vector3i(cell.x, 2, cell.y)
			var l2_item = enhanced_gridmap.get_cell_item(l2_pos)
			# Only clear if it is a highlight and NOT a Safe Zone (ID 2) or Freeze Area (ID 5)
			if l2_item != -1 and l2_item != 2 and l2_item != 5:
				enhanced_gridmap.set_cell_item(l2_pos, -1)
	
	highlighted_cells.clear()

	if main and main.ui_manager.playerboard_ui:
		for i in range(main.ui_manager.playerboard_ui.get_child_count()):
			var slot = main.ui_manager.playerboard_ui.get_child(i)
			for child in slot.get_children():
				child.hide()


func clear_playerboard_highlights():
	# Never allow bots to clear highlights for human players
	if player.is_bot or player.is_in_group("Bots"):
		return
		
	if not player.is_multiplayer_authority():
		return
		
	var main = player.get_tree().get_root().get_node_or_null("Main")
	if main and main.ui_manager.playerboard_ui:
		for i in range(main.ui_manager.playerboard_ui.get_child_count()):
			var slot = main.ui_manager.playerboard_ui.get_child(i)
			if slot.get_child_count() > 0: slot.get_child(0).hide()
			if slot.get_child_count() > 1: slot.get_child(1).hide()
			if slot.get_child_count() > 2: slot.get_child(2).hide()

	highlighted_cells.clear()