@tool
class_name PropInspector extends CanvasLayer

enum { STATUS_HIDDEN, STATUS_INSPECTING_PROP, STATUS_INSPECTING_COVER, STATUS_INSPECTING_NOTES }

# must be connected to
signal quit_and_hidden

@onready var notes_bg = %NotesBG as TextureRect
@onready var prop_bg = %PropBG as TextureRect
@onready var origin_texture = %OriginPropTexture as TextureRect
@onready var full_texture = %FullTexture as TextureRect
@onready var content_label = %ContentLabel as Label
@onready var tip_label = %TipLabel as Label

var tip_cover = "Q: " + tr("ui_退出") + "     " + "E: " + tr("ui_阅读")
var tip_notes = "Q: " + tr("ui_退出") + "     " + "E: " + tr("ui_收起")
var texture_cover: Texture2D
var texture_notes: Texture2D

var status := STATUS_HIDDEN
var blinking_tween: Tween


# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	tip_label.text = tip_cover
	if Engine.is_editor_hint():
		return
	visible = false
	layer = GlobalConfig.CANVAS_LAYER_PROP_INSPECTOR
	origin_texture.modulate.a = 0.0
	prop_bg.modulate.a = 0.0
	full_texture.modulate.a = 0.0
	content_label.modulate.a = 0.0
	tip_label.modulate.a = 0.0


func _hide():
	status = STATUS_HIDDEN
	var tween = create_tween()
	tween.tween_property(origin_texture, "modulate:a", 0.0, 0.3)
	tween.parallel().tween_property(full_texture, "modulate:a", 0.0, 0.3)
	tween.parallel().tween_property(content_label, "modulate:a", 0.0, 0.15)
	if blinking_tween and blinking_tween.is_running():
		blinking_tween.stop()
		tween.parallel().tween_property(tip_label, "modulate:a", 0.0, 0.15)
	tween.tween_callback(_post_hide)
	SceneManager.release_player()


func _post_hide():
	origin_texture.texture = null
	full_texture.texture = null
	texture_cover = null
	texture_notes = null
	content_label.text = ""
	tip_label.text = tip_cover
	notes_bg.visible = false
	visible = false
	quit_and_hidden.emit()


func _blink_label(init := true):
	if status == STATUS_HIDDEN:
		return
	blinking_tween = create_tween()
	if init:
		blinking_tween.tween_property(tip_label, "modulate:a", 0.8, 2.0)
		blinking_tween.tween_callback(_blink_label.bind(false))
	else:
		blinking_tween.tween_property(tip_label, "modulate:a", 0.5, 1.0)
		blinking_tween.tween_callback(_blink_label.bind(true))


func pop_standard_inspection(cover_texture, notes_texture, inspection_note, centered := false):
	if centered:
		content_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	else:
		content_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_LEFT
	if status != STATUS_HIDDEN:
		_hide()
	status = STATUS_INSPECTING_COVER
	visible = true
	full_texture.texture = cover_texture
	texture_cover = cover_texture
	texture_notes = notes_texture
	content_label.text = inspection_note
	SceneManager.freeze_player(0)
	var tween = create_tween()
	tween.tween_property(full_texture, "modulate:a", 1.0, 0.15)
	tip_label.text = tip_cover
	_blink_label()


func pop_prop_inspection(prop_key: String, cover_texture: Texture2D, use_default_bg := false):
	if status != STATUS_HIDDEN:
		_hide()
	if not cover_texture:
		push_error("PropInspector: cover_texture is not set")
		return
	status = STATUS_INSPECTING_PROP
	visible = true
	var tween = create_tween()
	if use_default_bg:
		prop_bg.visible = true
		origin_texture.texture = cover_texture
		full_texture.texture = null
		tween.tween_property(origin_texture, "modulate:a", 1.0, 0.15)
		tween.tween_property(prop_bg, "modulate:a", 1.0, 0.15)
	else:
		origin_texture.texture = null
		full_texture.texture = cover_texture
		tween.tween_property(full_texture, "modulate:a", 1.0, 0.15)
	content_label.text = ""
	tip_label.text = ""

	# 显示道具获得提示
	if prop_key:
		var obtain_str = tr("ui_获得")
		var prop_title = tr(prop_key)
		# var detail = tr(prop_key + "_说明")
		var text = "~ title\n" + obtain_str + ": " + prop_title
		text += "[#item]\n=> END"
		var prop_res = DialogueManager.create_resource_from_text(text)
		var balloon = preload("res://scene/dialog/balloon.tscn").instantiate()
		# 手动跳过的同时隐藏
		balloon.manually_skipped_line.connect(_hide)
		DialogueManager.show_dialogue_balloon_scene(balloon, prop_res, "title")
	SceneManager.freeze_player(0)


func _unhandled_input(event: InputEvent) -> void:
	if status == STATUS_HIDDEN:
		return
	if event.is_action_pressed("cancel"):
		get_viewport().set_input_as_handled()
		_hide()
	if event.is_action_pressed("interact"):
		get_viewport().set_input_as_handled()
		# STATUS_INSPECTING_COVER 与 STATUS_INSPECTING_NOTES 之间互相切换
		if status == STATUS_INSPECTING_COVER:
			# inspect notes
			status = STATUS_INSPECTING_NOTES
			if not texture_notes:
				notes_bg.visible = true
			else:
				full_texture.texture = texture_notes
			tip_label.text = tip_notes
			create_tween().tween_property(content_label, "modulate:a", 1.0, 0.2)
		elif status == STATUS_INSPECTING_NOTES:
			# inspect cover
			status = STATUS_INSPECTING_COVER
			notes_bg.visible = false
			full_texture.texture = texture_cover
			tip_label.text = tip_cover
			create_tween().tween_property(content_label, "modulate:a", 0.0, 0.2)
		# STATUS_INSPECTING_PROP 直接退出
		elif status == STATUS_INSPECTING_PROP:
			_hide()