extends SpringArm3D

@onready var player: CharacterBody3D = $"../.."

# --- Paramètres de mouvement ---
@export var max_follow_speed: float = 3.0
@export var speed_acceleration: float = 2.0
@export var height_offset: float = 2.5 
@export var wait_time: float = 0.5 

# --- Paramètres de Dialogue ---
@export var dialog_zoom_length: float = 2.0 
@export var dialog_side_offset: float = 1.0 
@export var transition_speed: float = 4.0 # Gère la vitesse du zoom, du décalage ET de la rotation en dialog

@onready var normal_spring_length: float = spring_length 

var delay_timer: float = 0.0
var current_follow_speed: float = 0.0
var current_side_offset: float = 0.0
var target_side_offset: float = 0.0 
var is_in_dialog: bool = false 

func _ready() -> void:
	top_level = true

func set_dialog_mode(npc_position: Vector3 = Vector3.ZERO, force_pos=-1) -> void:
	is_in_dialog = !is_in_dialog
	
	if is_in_dialog:
		var direction_to_npc = (npc_position - player.global_position).normalized()
		var right_dot = global_transform.basis.x.dot(direction_to_npc)
		
		if right_dot >= 0 :
			target_side_offset = dialog_side_offset
		else:
			target_side_offset = -dialog_side_offset
			
		if force_pos == 0 :
			target_side_offset = dialog_side_offset
		elif force_pos == 1 :
			target_side_offset = -dialog_side_offset
	else:
		target_side_offset = 0.0

func _physics_process(delta: float) -> void:
	if not is_instance_valid(player):
		return

	var target_rotation_y = player.global_rotation.y

	# ==========================================
	# 1. GESTION DE LA ROTATION (Avant la position !)
	# ==========================================
	if is_in_dialog:
		delay_timer = 0.3
		current_follow_speed = 0.5
		
		# La caméra tourne doucement pour se mettre dans le dos du joueur.
		# On utilise transition_speed pour que ça se finisse en même temps que le zoom.
		global_rotation.y = lerp_angle(global_rotation.y, target_rotation_y, transition_speed * delta)
		
	else:
		if player.can_play:
			# Comportement normal d'exploration (Le vieux Zelda)
			var angle_diff = abs(angle_difference(global_rotation.y, target_rotation_y))
			
			if angle_diff > 0.02 and player.velocity.length() > 0.1:
				delay_timer += delta
			else:
				delay_timer = 0.3
				current_follow_speed = 0.5

			if delay_timer >= wait_time:
				current_follow_speed = move_toward(current_follow_speed, max_follow_speed, speed_acceleration * delta)
				global_rotation.y = lerp_angle(global_rotation.y, target_rotation_y, current_follow_speed * delta)


	# ==========================================
	# 2. GESTION DU ZOOM ET DU DECALAGE
	# ==========================================
	var target_length = dialog_zoom_length if is_in_dialog else normal_spring_length
	
	spring_length = lerp(spring_length, target_length, transition_speed * delta)
	current_side_offset = lerp(current_side_offset, target_side_offset, transition_speed * delta)

	# On récupère le vecteur "Droite" MAINTENANT, car la rotation vient juste d'être mise à jour au-dessus.
	var right_direction = global_transform.basis.x
	
	# On applique la position finale (Joueur + Hauteur + Décalage latéral)
	global_position = player.global_position + Vector3(0, height_offset, 0) + (right_direction * current_side_offset)