extends Node

@export var throw_interval: float = 2.0
@export var throw_range: int = 3

var tekton: Node3D
var enhanced_gridmap: Node
var timer: Timer

func _ready():
	tekton = get_parent()
	if not tekton:
		set_physics_process(false)
		return
		
	# Wait for gridmap
	await get_tree().process_frame
	var main = tekton.get_tree().get_root().get_node_or_null("Main")
	if main:
		enhanced_gridmap = main.get_node_or_null("EnhancedGridMap")
	
	# Initial State
	# No idle anim for static tekton mesh, just ensure stopped
	var ap = tekton.get_node_or_null("Visuals/tekton/AnimationPlayer")
	if ap: ap.stop()
	
	# Setup Timer
	timer = Timer.new()
	timer.one_shot = true
	timer.timeout.connect(_on_timer_timeout)
	add_child(timer)
	_start_timer()

func _start_timer():
	timer.wait_time = throw_interval
	timer.start()

func _on_timer_timeout():
	if not multiplayer.has_multiplayer_peer(): return
	if not is_multiplayer_authority(): return
	if not tekton or not enhanced_gridmap: return
	
	if tekton.get("is_carried") or tekton.get("is_thrown"):
		_start_timer()
		return

	# print("[StaticTekton] Timer timeout. Attempting throw...")
	_attempt_throw()

func _attempt_throw():
	# Find target
	var target = _find_empty_tile()
	if target == Vector2i(-1, -1):
		# print("[StaticTekton] No valid target found.")
		_start_timer()
		return
		
	# print("[StaticTekton] Target found: %s" % target)
	# Execute Throw
	# 1. Face target
	var target_world_pos = Vector3(target.x + 0.5, 0, target.y + 0.5)
	if enhanced_gridmap and "cell_size" in enhanced_gridmap:
		target_world_pos = Vector3(
			target.x * enhanced_gridmap.cell_size.x + enhanced_gridmap.cell_size.x / 2,
			enhanced_gridmap.cell_size.y,
			target.y * enhanced_gridmap.cell_size.z + enhanced_gridmap.cell_size.z / 2
		)
		
	tekton.look_at(Vector3(target_world_pos.x, tekton.global_position.y, target_world_pos.z), Vector3.UP)
	
	# 2. Play Animation
	if tekton.has_method("play_animation_rpc") and tekton.has_method("can_rpc") and tekton.can_rpc():
		tekton.rpc("play_animation_rpc", "ted_bones_001|Tekton Throwing Tiles|Anima_Layer")
		
	# 3. Create Projectile Visual (Synced)
	if tekton.has_method("spawn_projectile_rpc") and tekton.has_method("can_rpc") and tekton.can_rpc():
		tekton.rpc("spawn_projectile_rpc", target_world_pos, 0.5)
	
	# 4. Impact / Spawn
	await get_tree().create_timer(0.5).timeout
	
	var main = tekton.get_tree().get_root().get_node_or_null("Main")
	if main and tekton.has_method("can_rpc") and tekton.can_rpc():
		# Spawn Item (Random ID 7-10)
		var item_id = randi_range(7, 10)
		main.rpc("sync_grid_item", target.x, 1, target.y, item_id)
		
	# 5. Resume Idle
	await get_tree().create_timer(0.5).timeout # Small delay after throw
	# No idle anim for static tekton mesh, just stop
	if tekton.has_method("can_rpc") and tekton.can_rpc():
		# Stop animation on all peers via a direct call (AnimationPlayer.stop is visual-only, safe)
		var ap = tekton.get_node_or_null("Visuals/tekton/AnimationPlayer")
		if ap: ap.stop()
		
	_start_timer()

func _find_empty_tile() -> Vector2i:
	if not enhanced_gridmap or not "rows" in enhanced_gridmap: return Vector2i(-1, -1)
	
	var center = Vector2i(tekton.global_position.x, tekton.global_position.z) # Approx grid pos
	# Better: use tekton.current_position if available
	if "current_position" in tekton:
		center = tekton.current_position
		
	var candidates = []
	for x in range(center.x - throw_range, center.x + throw_range + 1):
		for y in range(center.y - throw_range, center.y + throw_range + 1):
			if x < 0 or y < 0 or x >= enhanced_gridmap.columns or y >= enhanced_gridmap.rows: continue
			
			# Check range logic (Euclidean or Manhattan?)
			if Vector2(x, y).distance_to(Vector2(center.x, center.y)) > throw_range: continue
			
			# EXPLICITLY EXCLUDE 3x3 BASE AREA (Tekton Stand)
			# The stand occupies [center-1, center+1]. We must NOT spawn here.
			if abs(x - center.x) <= 1 and abs(y - center.y) <= 1:
				continue
			
			# Check if empty (Layer 1 has no item)
			if enhanced_gridmap.get_cell_item(Vector3i(x, 1, y)) == -1:
				# Also check floor exist? (Layer 0)
				if enhanced_gridmap.get_cell_item(Vector3i(x, 0, y)) != -1:
					candidates.append(Vector2i(x, y))
	
	if candidates.is_empty(): return Vector2i(-1, -1)
	return candidates.pick_random()