extends Node

# PowerUpManager - Handles Boost Meter (Time-based logic)
# Note: Inventory logic is now in SpecialTilesManager + PlayerboardManager

const MAX_BOOST: float = 100.0 # Fills to 100. Activation requires FULL bar (>= 100).
const BASE_FILL_RATE: float = 10.0 # 10 points per second (10s to full) - user requested faster/simpler

var player: Node3D
var enhanced_gridmap: Node
var goal_manager: Node

# Progressive Difficulty Settings
const FILL_TIMES: Array = [2.0, 3.0, 4.0, 5.0, 6.0, 7.5, 8.5, 10.0] # Seconds to full for Lvl 1-8 (2s to 10s)
var current_level: int = 1

# Boost State
var current_boost: float = 0.0

# Alias for compatibility with BotStrategicPlanner
var current_points: float:
	get:
		return current_boost
	set(value):
		current_boost = value

# Also alias MAX_POINTS
const MAX_POINTS = MAX_BOOST

signal points_changed(current: int, max_points: int) # Reused for UI (int casting)
signal bar_filled()
signal boost_reset()

func initialize(p_player: Node3D, p_gridmap: Node):
	player = p_player
	enhanced_gridmap = p_gridmap
	
	# Find GoalManager
	var main = player.get_tree().get_root().get_node_or_null("Main")
	if main:
		goal_manager = main.get_node_or_null("GoalManager")
		
	set_process(true)

func _process(delta):
	if not multiplayer.has_multiplayer_peer():
		return
	if not is_instance_valid(player) or not player.is_multiplayer_authority():
		return
		
	# Only fill if not full
	if current_boost < MAX_BOOST:
		var multiplier = 1.0
		if goal_manager:
			# Use authority ID for lookup
			multiplier = goal_manager.get_boost_multiplier(player.get_multiplayer_authority())
			
		# Calculate Dynamic Fill Rate based on Level
		# Level 1 (Index 0) -> Level 8 (Index 7)
		var level_idx = clamp(current_level - 1, 0, FILL_TIMES.size() - 1)
		var fill_time = FILL_TIMES[level_idx]
		var current_rate = MAX_BOOST / fill_time # e.g. 100/10 = 10/s, 100/60 = 1.66/s
		
		current_boost += current_rate * multiplier * delta
		current_boost = min(current_boost, MAX_BOOST)
		
		# Update UI (Cast to int for compatibility with existing UI slider/bar)
		emit_signal("points_changed", int(current_boost), int(MAX_BOOST))
		
		if current_boost >= MAX_BOOST:
			_on_boost_full()

func _on_boost_full():
	# player.is_attack_mode = true # Removed auto-activate
	emit_signal("bar_filled")
	NotificationManager.send_message(player, NotificationManager.MESSAGES.ATTACK_MODE_READY, NotificationManager.MessageType.POWERUP)
	print("[PowerUp] Player %s Boost Full! Ready for Attack Mode." % player.name)
	
	if player.is_multiplayer_authority() and player.has_method("can_rpc") and player.can_rpc():
		rpc("sync_boost", current_boost)

func reset_boost():
	current_boost = 0.0
	# player.is_attack_mode = false # Do not auto-disable here, managed by usage
	emit_signal("points_changed", 0, int(MAX_BOOST))
	emit_signal("boost_reset")
	
	if player.is_multiplayer_authority() and player.has_method("can_rpc") and player.can_rpc():
		rpc("sync_boost", 0.0)

# =============================================================================
# Sync
# =============================================================================

@rpc("any_peer", "call_local", "reliable")
func sync_boost(value: float):
	current_boost = value
	emit_signal("points_changed", int(current_boost), int(MAX_BOOST))
	
	# Client-side Attack Mode visual check (?)
	if current_boost >= MAX_BOOST:
		# Could trigger visual effect here
		pass

@rpc("authority", "call_local", "reliable")
func sync_boost_level(level: int):
	current_level = level
	var level_idx = clamp(current_level - 1, 0, FILL_TIMES.size() - 1)
	print("[PowerUp] Difficulty synced: Level %d (Fill Time: %.1fs)" % [current_level, FILL_TIMES[level_idx]])


# =============================================================================
# Getters
# =============================================================================

func get_points() -> int:
	return int(current_boost)

func get_max_points() -> int:
	return int(MAX_BOOST)

func get_fill_percentage() -> float:
	return current_boost / MAX_BOOST

func get_time_until_full() -> float:
	if current_boost >= MAX_BOOST:
		return 0.0
	
	# Calculate remaining points needed
	var remaining = MAX_BOOST - current_boost
	
	# Get current fill rate
	var level_idx = clamp(current_level - 1, 0, FILL_TIMES.size() - 1)
	var fill_time = FILL_TIMES[level_idx]
	var current_rate = MAX_BOOST / fill_time
	
	if current_rate <= 0: return 0.0
	
	return remaining / current_rate

func get_bars() -> int:
	"""Returns the number of filled segments (0-4)."""
	# Each bar is 25 points (100 / 4)
	return int(current_boost / 25.0)

func can_use_special() -> bool:
	# Use small epsilon for float comparison to avoid "99.999" issues
	return current_boost >= (MAX_BOOST - 0.1)

func enable_attack_mode():
	"""Enable Attack Mode without consuming boost."""
	player.set("is_attack_mode", true)
	NotificationManager.send_message(player, NotificationManager.MESSAGES.ATTACK_MODE_READY, NotificationManager.MessageType.POWERUP)
	print("[PowerUp] Attack Mode Enabled (Free).")

func use_special_effect() -> bool:
	if not can_use_special():
		return false
	
	# Restriction: Cannot use attack mode while carrying a Tekton or in Ghost mode
	if player.is_carrying_tekton:
		NotificationManager.send_message(player, "Cannot use Charged Strike while carrying a Tekton!", NotificationManager.MessageType.WARNING)
		return false
	
	if player.get("is_invisible"):
		NotificationManager.send_message(player, "Cannot use Charged Strike while in Ghost mode!", NotificationManager.MessageType.WARNING)
		return false
	
	if player.has_method("enter_charged_strike"):
		player.enter_charged_strike()
		return true
		
	return false
	
func consume_boost(amount: float):
	"""Consume a specific amount of boost."""
	current_boost -= amount
	if current_boost <= 0:
		current_boost = 0.0
		player.set("is_attack_mode", false) # Out of fuel
		emit_signal("boost_reset") # UI update for empty
		print("[PowerUp] Boost depleted. Attack Mode OFF.")
	
	emit_signal("points_changed", int(current_boost), int(MAX_BOOST))
	
	if player.is_multiplayer_authority() and player.has_method("can_rpc") and player.can_rpc():
		rpc("sync_boost", current_boost)

func spawn_boost_reward() -> bool:
	"""Alternative Boost Usage: Spawn a PowerUp Tile properly.
	Now requires carrying a Tekton (E shortcut)."""
	if not player.is_carrying_tekton:
		return false
		
	if player.special_tiles_manager and player.special_tiles_manager.has_method("spawn_powerups_around"):
		# Trigger the synced floor spawn animation
		if player.has_method("rpc"):
			player.rpc("sync_floor_spawn_animation")
		elif player.has_method("play_floor_spawn"):
			player.play_floor_spawn()

		# Spawn tiles (Stop N Go gets only common, Free Mode gets 60/40 ratio)
		player.special_tiles_manager.spawn_powerups_around(player.current_position, true, false, true)
		
		# Drop the Tekton after spawning
		if player.has_method("drop_tekton"):
			player.drop_tekton()
			
		reset_boost()
		print("[PowerUp] %s used Tekton to SPAWN TILES and consumed Boost." % player.name)
		return true
	
	return false

func acquire_smash_bonus():
	current_boost += 25.0 # Add 25% boost
	current_boost = min(current_boost, MAX_BOOST)
	emit_signal("points_changed", int(current_boost), int(MAX_BOOST))
	if current_boost >= MAX_BOOST:
		_on_boost_full()

func add_goal_completion_reward():
	"""Called when player completes a goal board. Increases difficulty level."""
	current_level += 1
	if current_level > 8:
		current_level = 8
		
	var level_idx = clamp(current_level - 1, 0, FILL_TIMES.size() - 1)
	print("[PowerUp] Player %s Completed Goal. Boost Level Up! Now: %d (Fill Time: %.1fs)" % [player.name, current_level, FILL_TIMES[level_idx]])
	
	# Optional: Notify user of difficulty increase?
	
	if multiplayer.is_server() and player.has_method("can_rpc") and player.can_rpc():
		rpc("sync_boost_level", current_level)