extends Node3D

@export var day_length := 120.0 # seconds for full rotation
@export var start_light_angle := -90.0
@export var show_spawn_dialog := true
@export_multiline var spawn_dialog_text := "Welcome to Promiscuity.\n\nPress E to close this message."
@export var spawn_dialog_auto_close_seconds := 4.0
var end_light_angle = start_light_angle + 360.0
var start_radians = start_light_angle * PI / 180
var time := 0.0

@onready var sun := $DirectionalLight3D

func _ready() -> void:
	if show_spawn_dialog and DialogSystem and DialogSystem.has_method("show_text"):
		await get_tree().process_frame
		DialogSystem.show_text(spawn_dialog_text)
		if spawn_dialog_auto_close_seconds > 0.0:
			await get_tree().create_timer(spawn_dialog_auto_close_seconds).timeout
			if DialogSystem and DialogSystem.has_method("close_if_text"):
				DialogSystem.close_if_text(spawn_dialog_text)

func _process(delta):
	time = fmod((time + delta), day_length)
	var t = time / day_length

	# Rotate sun around X axis
	var angle = lerp(start_light_angle, end_light_angle, t) # sunrise → sunset → night → sunrise
	sun.rotation_degrees.x = angle

	# Adjust intensity
	var curSin = -sin((t * TAU) + start_radians)
	var energy = clamp((curSin * 1.0) + 0.2, 0.0, 1.2)
	sun.light_energy = energy