@tool
class_name EnvironmentManagerRoot
extends Node3D

@export var environment_config: EnvironmentConfig

@export_group("Particles")
@export var particles_wind: GPUParticles3D
@export var particles_snow: GPUParticles3D
@export var particles_fireflies: GPUParticles3D
@export var particles_rain: GPUParticles3D
@export var godray: PackedScene
@export var fog_overlay: ColorRect

#environment nodes
@onready var sun: DirectionalLight3D = $"../DirectionalLight3D"
@onready var environment: WorldEnvironment = $"../WorldEnvironment"

var day_night_controller: DayNightController 
var weather_controller: WeatherController

var day_tween: Tween
var day_time: float = 0.0

func _ready() -> void:	
		
	if day_night_controller == null:
		day_night_controller = DayNightController.new()
		day_night_controller.name = "DayNightController"
		day_night_controller.time_changed.connect(select_day_time)
		add_child(day_night_controller)

	if weather_controller == null:
		weather_controller = WeatherController.new(
			particles_wind,
			particles_snow,
			particles_fireflies,
			particles_rain,
			godray,
			sun,
			environment,
			environment_config
		)
		weather_controller.name = "WeatherController"
		add_child(weather_controller)

func select_day_time(normalized_time: float) -> void:
	# Convert 0.0-1.0 normalized time to range used by atmosphere lerps
	# morning (dawn→noon) = 1.0-2.0, afternoon/night (noon→midnight) = 2.0-3.0
	if normalized_time < 0.5:
		# 0.0→0.5 maps to 1.0→2.0 (morning to afternoon)
		day_time = 1.0 + (normalized_time / 0.5)
	else:
		# 0.5→1.0 maps to 2.0→3.0 (afternoon to night)
		day_time = 2.0 + ((normalized_time - 0.5) / 0.5)

	if day_tween and day_tween.is_valid():
		day_tween.kill()
	day_tween = create_tween()
	day_tween.set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_IN_OUT)
	day_tween.tween_property(self, "day_time", day_time, 3.0)
	
	if weather_controller:
		weather_controller.day_time = day_time