extends Node

var player: Node3D
var movement_manager: Node
var race_manager: Node
@onready var SettingsManager = get_node_or_null("/root/SettingsManager")

func initialize(p_player: Node3D, p_movement_manager: Node, p_race_manager: Node):
	player = p_player
	movement_manager = p_movement_manager
	race_manager = p_race_manager

func _process(delta):
	# Early return conditions
	if not is_instance_valid(player) or not player.is_multiplayer_authority() or player.is_bot or player.is_in_group("Bots") or player.is_frozen or player.is_stop_frozen:
		return
		
	if TurnManager.turn_based_mode:
		return
		
	# Continuous movement input
	var move_vec = Vector2i.ZERO
	if Input.is_action_pressed("move_north"): move_vec.y -= 1
	if Input.is_action_pressed("move_south"): move_vec.y += 1
	if Input.is_action_pressed("move_east"): move_vec.x += 1
	if Input.is_action_pressed("move_west"): move_vec.x -= 1
	
	# Fallback for explicit diagonal actions (if mapped)
	if move_vec == Vector2i.ZERO:
		if Input.is_action_pressed("move_northeast"): move_vec = Vector2i(1, -1)
		elif Input.is_action_pressed("move_southeast"): move_vec = Vector2i(1, 1)
		elif Input.is_action_pressed("move_southwest"): move_vec = Vector2i(-1, 1)
		elif Input.is_action_pressed("move_northwest"): move_vec = Vector2i(-1, -1)
	

	# Action inputs (still momentary)
	if Input.is_action_just_pressed("action_grab"):
		player.grab_item(player.current_position)
	elif Input.is_action_just_pressed("action_put"):
		player.auto_put_item()
		
	if move_vec != Vector2i.ZERO:
		var target_position = player.current_position + move_vec
		movement_manager.simple_move_to(target_position)


	# Targeting Mode Preview
	var main = player.get_node_or_null("/root/Main")
	if main and main.ui_manager and main.ui_manager.current_action_state == main.ui_manager.ActionState.TARGETING:
		# Use mouse position raycast to determine hover
		var viewport = player.get_viewport()
		var mouse_pos = viewport.get_mouse_position()
		var camera = viewport.get_camera_3d()
		var from = camera.project_ray_origin(mouse_pos)
		var to = from + camera.project_ray_normal(mouse_pos) * 1000
		var hover_grid = player.raycast_to_grid(from, to)
		
		# print("Targeting Hover: %s, Skill: %d" % [hover_grid, main.ui_manager.pending_skill_id]) # Debug
		
		# Only update if valid position
		if hover_grid != Vector2i(-1, -1):
			var st_manager = player.get_node_or_null("SpecialTilesManager")
			if st_manager:
				var area = st_manager.get_skill_affected_area(main.ui_manager.pending_skill_id, hover_grid)
				
				# Choose highlight color/mesh based on skill
				# User Request: Use default hover item (1)
				var highlight_id = 1
				
				player.highlight_cells_if_authorized(area, highlight_id)

func handle_unhandled_input(event):
	# Early return if not authorized human playersa
	if not player.is_multiplayer_authority() or player.is_bot or player.is_in_group("Bots"):
		player.set_process_unhandled_input(false)
		return
	
	var main = player.get_node("/root/Main")
	if not main:
		return
	
	# Turn-based mouse input (handled in unhandled_input)
	if not player.is_multiplayer_authority() or player.is_frozen or player.is_stop_frozen or (TurnManager.turn_based_mode and (not player.is_my_turn or movement_manager.is_moving)):
		return

	# --- Keyboard Shortcuts (Event-based) ---
	if event is InputEventKey and event.pressed and not event.echo:
		var mode = LobbyManager.get_game_mode()
		var is_sng = mode == GameMode.Mode.STOP_N_GO
		
		# Get dynamic keybinds
		var key_p1 = SettingsManager.get_control_keycode("powerup_1")
		var key_p2 = SettingsManager.get_control_keycode("powerup_2")
		var key_p3 = SettingsManager.get_control_keycode("powerup_3")
		var key_p4 = SettingsManager.get_control_keycode("powerup_4")
		
		var ek = event.keycode
		
		# Unified check for PowerUp keys
		if ek == key_p1:
			player.activate_powerup(0) # FASTER_SPEED
		elif ek == key_p2:
			if is_sng:
				player.activate_powerup(3) # Ghost for SNG P2
			else:
				player.activate_powerup(2) # Wall for Normal P2
		elif ek == key_p3 and not is_sng:
			player.activate_powerup(1) # AREA_FREEZE
		elif ek == key_p4 and not is_sng:
			player.activate_powerup(3) # INVISIBLE_MODE
			
		# Non-Remappable variants (Numpad) - Optional fallback
		elif ek == KEY_KP_1:
			player.activate_powerup(0)
		elif ek == KEY_KP_2:
			player.activate_powerup(3 if is_sng else 2)
			
		# Action Buttons (Remappable)
		elif ek == SettingsManager.get_control_keycode("attack_mode"):
			if player.powerup_manager:
				player.powerup_manager.use_special_effect()
				if player.is_attack_mode and player.has_method("enter_attack_mode"):
					player.enter_attack_mode()
						
		elif ek == SettingsManager.get_control_keycode("spawn_boost"):
			if player.is_carrying_tekton and player.powerup_manager:
				if player.powerup_manager.has_method("spawn_boost_reward"):
					player.powerup_manager.spawn_boost_reward()
					
		elif ek == SettingsManager.get_control_keycode("tekton_grab"):
			if not player.is_carrying_tekton and player.powerup_manager:
				if player.powerup_manager.can_use_special():
					player.grab_tekton()
	
	# Handle spawn point selection if not yet selected
	
	# Handle spawn point selection if not yet selected
	if not player.spawn_point_selected and player.highlighted_spawn_points.size() > 0:
		if event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
			var camera = player.get_viewport().get_camera_3d()
			var from = camera.project_ray_origin(event.position)
			var to = from + camera.project_ray_normal(event.position) * 1000
			
			var click_position = player.raycast_to_grid(from, to)
			if click_position in player.highlighted_spawn_points:
				if player.select_spawn_point(click_position):
					return
	
	# Turn-based mouse input
	if not player.is_multiplayer_authority() or (TurnManager.turn_based_mode and (not player.is_my_turn or movement_manager.is_moving)):
		return

	if event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
		if player.is_bot == true or player.is_in_group("Bots"):
			player.set_process_unhandled_input(false)
			player.set_process_input(false)
			return
		var camera = player.get_viewport().get_camera_3d()
		var from = camera.project_ray_origin(event.position)
		var to = from + camera.project_ray_normal(event.position) * 1000
		
		var click_position = player.raycast_to_grid(from, to)
		if click_position != Vector2i(-1, -1):
			handle_grid_click(click_position)

func handle_grid_click(grid_position: Vector2i):
	if player.is_frozen or player.is_stop_frozen or player.is_bot == true or player.is_in_group("Bots"):
		return
	var main = player.get_node("/root/Main")
	if not main:
		return
		
	match main.ui_manager.current_action_state:
		main.ui_manager.ActionState.MOVING:
			if grid_position in player.highlighted_cells:
				movement_manager.move_to_clicked_position(grid_position)
		main.ui_manager.ActionState.GRABBING:
			if grid_position in player.highlighted_cells or grid_position == player.current_position:
				player.grab_item(grid_position)
		main.ui_manager.ActionState.RANDOMIZING:
			if grid_position in player.highlighted_cells:
				main.randomize_item_at_position(grid_position)
		# Add TARGETING State
		main.ui_manager.ActionState.TARGETING:
			var skill_id = main.ui_manager.pending_skill_id
			if skill_id != -1:
				var st_manager = player.get_node_or_null("SpecialTilesManager")
				if st_manager:
					# Clear Highlights FIRST to avoid overwriting the newly placed tiles
					player.clear_highlights()
					
					st_manager.execute_targeted_effect(skill_id, grid_position)
					# Reset state
					main.ui_manager.pending_skill_id = -1
					main.ui_manager.current_action_state = main.ui_manager.ActionState.NONE


func handle_slot_gui_input(event, slot_index, slot_ui) -> int:
	if event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
		var main = player.get_tree().get_root().get_node_or_null("Main")
		
		if main.ui_manager.current_action_state == main.ui_manager.ActionState.ARRANGING:
			if player.selected_playerboard_slot == -1:
				player.select_playerboard_slot(slot_index)
				return slot_index
			else:
				if player.selected_playerboard_slot == slot_index:
					player.deselect_playerboard_slot()
					return slot_index
				elif player.can_move_to_target_playerboard_slot():
					player.target_playerboard_slot(slot_index)
					main.emit_signal("can_move_item", true)
					return slot_index
				else:
					return -1
	return -1