@tool
class_name EnvironmentManagerRoot
extends Node3D

@export var environment_config: EnvironmentConfig

@export_group("Camera")
@export var camera: Camera3D

@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,
			camera
		)
		weather_controller.name = "WeatherController"
		add_child(weather_controller)

func select_day_time(normalized_time: float) -> void:
	# 0.0→0.25  = alba:       day_time 1.0→2.0 (night colors → morning colors)
	# 0.25→0.5  = giorno:     day_time 2.0→2.0 (stays morning/afternoon)
	# 0.5→0.75  = tramonto:   day_time 2.0→3.0 (afternoon colors → night colors)
	# 0.75→1.0  = notte:      day_time 3.0→3.0 (stays night)
	# At wrap 1.0→0.0:        day_time stays 3.0, then fades back via alba
	
	if normalized_time < 0.25:
		# Alba: notte → mattina
		day_time = 3.0 - (normalized_time / 0.25) * 2.0  # 3.0 → 1.0
	elif normalized_time < 0.5:
		# Giorno pieno
		var t: float = (normalized_time - 0.25) / 0.25
		day_time = 1.0 + t  # 1.0 → 2.0
	elif normalized_time < 0.75:
		# Tramonto: pomeriggio → notte
		var t: float = (normalized_time - 0.5) / 0.25
		day_time = 2.0 + t  # 2.0 → 3.0
	else:
		# Notte piena
		day_time = 3.0
	
	if weather_controller:
		weather_controller.day_time = day_time