class_name Interactable extends Node3D

@export var interaction: PackedScene = null
var interaction_ui : Control = null

@onready var view: Node3D = $View
@onready var frame: Sprite3D = $Frame
@onready var canvas_layer: CanvasLayer = $CanvasLayer

var active : bool = true
var shown : bool = false
var hover : bool = false
var collected : bool = false

var tween: Tween = null

func _ready() -> void:
	view.scale = Vector3.ZERO
	frame.modulate.a = 0
	if interaction:
		interaction_ui = interaction.instantiate() as Control
		canvas_layer.add_child(interaction_ui)
	Scenes.player_enable.connect(_player_active) # TODO: do I have to clean this up?

func _player_active(value: bool) -> void:
	active = value

func _process(_delta: float) -> void:
	_process_hover()
	_process_billboard()

func _process_billboard() -> void:
	if shown:
		var player_view := State.player_view
		look_at(player_view.global_position, Vector3.UP, true)

func _process_hover() -> void:
	if active and hover and not shown:
		shown = true
		view.scale = Vector3.ZERO
		frame.modulate = Color.TRANSPARENT
		view.rotation.z = -PI*0.5 # Godot angle wrapping is ... something
		if tween: tween.kill()
		tween = create_tween().set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_BACK)
		tween.parallel().tween_property(view, "scale", Vector3.ONE, 1.0).set_delay(0.5)
		tween.parallel().tween_property(view, "rotation:z", 0, 0.8).set_delay(0.5)
		tween.parallel().tween_property(frame, "modulate:a", 1.0, 2.0)

	elif not hover and shown or shown and not active:
		shown = false
		if tween: tween.kill()
		tween = create_tween().set_ease(Tween.EASE_IN).set_trans(Tween.TRANS_BACK)
		tween.parallel().tween_property(view, "scale", Vector3.ZERO, 0.3)
		tween.parallel().tween_property(frame, "modulate:a", 0, 0.6)

func _input(event: InputEvent) -> void:
	if not active or not hover or not shown: return
	print(event, event.is_action_pressed("ui_accept"))
	var clicked : bool = (event.is_action_pressed("ui_accept")) or (event is InputEventMouseButton and event.pressed)

	if hover and shown and clicked:
		collect_memento()


func collect_memento() -> void:
	shown = false
	collected = true

	# Hide mouse and collapse other interactables BEFORE showing canvas
	get_tree().call_group("interactables", "collapse")

	# Show the CanvasLayer so the story is visible full-screen
	canvas_layer.show()

	if interaction_ui is StoryPlayable:
		Input.mouse_mode = Input.MOUSE_MODE_HIDDEN

		canvas_layer.show()
		Scenes.begin_sequence(interaction_ui.scene_id)

		# Play the story
		await interaction_ui.play()

		# Pick the cards
		var picker := State.room.get_node("%Picker") as CardPicker
		await picker.pick_cards(interaction_ui.scene_id, false)

		# Hide the CanvasLayer when done
		canvas_layer.hide()
		Scenes.end_sequence(interaction_ui.scene_id) # todo: maybe later?

		Input.mouse_mode = Input.MOUSE_MODE_CAPTURED
		Scenes.player_enable.emit(true) # TODO: this may not be our job?