extends Control


@onready var bg: ColorRect = %Bg
@onready var v_label: Label = %VLabel
@onready var panel_label: Label = %PanelLabel
@onready var transition_overlay: ColorRect = %TransitionOverlay
@onready var vbox: VBoxContainer = %VBox

var _v_start: int
var _v_end: int
var _p_start: int
var _p_end: int


func _ready() -> void:
	if not Engine.is_editor_hint():
		get_window().mode = Window.MODE_FULLSCREEN

	var screen_size: Vector2 = get_viewport_rect().size

	# Background color from config
	if ConfigManager.has_method("get_color"):
		bg.color = ConfigManager.get_color("background_color", Color(0.08, 0.08, 0.12))

	# Compute end font sizes as a large fraction of screen height.
	_v_end = maxi(1, int(screen_size.y * 0.28))
	_p_end = maxi(1, int(screen_size.y * 0.15))
	_v_start = 4
	_p_start = 4

	_set_v_size(_v_start)
	_set_p_size(_p_start)
	vbox.modulate = Color(1, 1, 1, 0)
	transition_overlay.color = Color(0, 0, 0, 1)

	await get_tree().process_frame

	# Reveal background (fade overlay away)
	var reveal := create_tween()
	reveal.tween_property(transition_overlay, "color", Color(0, 0, 0, 0), 0.4)
	await reveal.finished

	# Phase 1: Animate font sizes up + fade in
	var grow := create_tween()
	grow.set_parallel(true)
	grow.tween_method(_set_sizes, 0.0, 1.0, 2.0).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_BACK)
	grow.tween_property(vbox, "modulate", Color(1, 1, 1, 1), 1.8).set_ease(Tween.EASE_OUT)
	await grow.finished

	# Phase 2: Hold
	await get_tree().create_timer(1.0).timeout

	# Phase 3: Crossfade to dashboard
	# The splash and dashboard share the same background color, so the
	# transition is seamless — splash text fades out while dashboard
	# modules materialise out of the same dark backdrop.
	var dashboard := preload("res://scenes/dashboard.tscn").instantiate()
	add_child(dashboard)
	dashboard.modulate = Color(1, 1, 1, 0)

	var crossfade := create_tween()
	crossfade.set_parallel(true)
	crossfade.tween_property(vbox, "modulate", Color(1, 1, 1, 0), 1.0).set_ease(Tween.EASE_IN)
	crossfade.tween_property(dashboard, "modulate", Color(1, 1, 1, 1), 1.0).set_ease(Tween.EASE_OUT).set_delay(0.2)
	await crossfade.finished

	# Reparent dashboard from splash to root, then free splash.
	remove_child(dashboard)
	get_tree().root.add_child(dashboard)
	queue_free()


func _set_v_size(px: int) -> void:
	v_label.set("theme_override_font_sizes/font_size", px)


func _set_p_size(px: int) -> void:
	panel_label.set("theme_override_font_sizes/font_size", px)


func _set_sizes(progress: float) -> void:
	var v_size: int = maxi(1, int(round(_v_start + progress * (_v_end - _v_start))))
	var p_size: int = maxi(1, int(round(_p_start + progress * (_p_end - _p_start))))
	_set_v_size(v_size)
	_set_p_size(p_size)