@tool
class_name Ground2D extends Node2D

@export var scene_name := ""
@export_group("Player", "player_")
@export var player_y_fixed := true
@export var player_y := 70:
	set(val):
		player_y = val
		if is_node_ready():
			_reset_player_positon()
@export var reset_player_pos := false:
	set(val):
		reset_player_pos = false
		_reset_player_positon()
@export_group("Sound")
@export_enum("none", "ghost", "walking", "running", "crawling", "concrete")
var footstep_type: String = "concrete":
	set(val):
		footstep_type = val
		if is_node_ready():
			_load_footstep_audio()

@onready var player = %MainPlayer as MainPlayer
@onready var directional_light := %DirectionalLight2D as DirectionalLight2D
@onready var bg_sprite = %BGSprite2D as Sprite2D
@onready var foreground = %ParallaxForeground as ParallaxBackground
@onready var camera_focus_marker = %CameraFocusMarker as CameraFocusMarker
@onready var camera = %Camera2D as Camera2D

@onready var footstep_audio = %FootstepAudioPlayer as RandomAudioStreamPlayer

const FOOTSTEP_AUDIO = {
	#"wood": preload("res://config/audio/footstep/footstep_wood.tres"),
	#"carpet": preload("res://config/audio/footstep/footstep_carpet.tres"),
	"concrete": preload("res://config/audio/footstep/footstep_concrete.tres"),
	#"grass": preload("res://config/audio/footstep/footstep_grass.tres"),
	#"snow": preload("res://config/audio/footstep/footstep_snow.tres"),
	"ghost": preload("res://config/audio/sfx/footstep_ghost.tres"),
	"walking": preload("res://config/audio/sfx/footstep_walking.tres"),
	"running": preload("res://config/audio/sfx/footstep_running.tres"),
	"crawling": preload("res://config/audio/sfx/footstep_crawling.tres"),
}


func _ready() -> void:
	foreground.layer = GlobalConfig.CANVAS_LAYER_FG
	_reset_player_positon()
	# 检查 scene_name 是否合法
	scene_name = scene_name.strip_edges()
	if not scene_name or scene_name.length() != 7:
		printerr("scene_name is not valid")
		return
	if Engine.is_editor_hint():
		return
	# 如果 debug 模式下不通过 GroundLoader 启动，读取 palyer 位置
	if GlobalConfig.DEBUG and not get_parent() is GroundLoader:
		player.global_position.x = ArchiveManager.archive.player_global_position_x
	_set_camera_and_player_boundary()
	_load_footstep_audio()
	focus_player()
	# %ColorRectTop.visible = true
	# %ColorRectBottom.visible = true


func _enter_tree() -> void:
	if camera:
		camera.enabled = true


func _reset_player_positon():
	player.position.x = $DeployLayer/portal_left.position.x
	# 从屏幕下边缘算起
	player.set_y_from_ground(158.0 - player_y)


func _set_camera_and_player_boundary():
	# set current_boarder by bg size
	if bg_sprite.texture and not Engine.is_editor_hint():
		var size = bg_sprite.texture.get_size() * bg_sprite.scale
		# camera rect
		var camera_size = Vector2(max(564.0, size.x), max(size.y, 316.0))
		var camera_upleft = Vector2(0, -camera_size.y / 2.0)
		var camera_rect = Rect2(camera_upleft, camera_size)
		# player rect should be set centered, with 30px x padding
		var up_left = Vector2(0, -size.y / 2.0)
		size.x -= 36.0
		up_left.x = bg_sprite.position.x + 18.0
		var player_rect = Rect2(up_left, size)
		SceneManager.set_camera_boundary(camera_rect)
		SceneManager.set_player_boundary(player_rect)
		if GlobalConfig.DEBUG:
			print("_set_camera_and_player_boundary:", camera_rect, player_rect)


func _load_footstep_audio():
	# foot step sound
	footstep_audio.audio_collections.clear()
	if footstep_type != "none":
		var audio = FOOTSTEP_AUDIO[footstep_type] as AudioStreamCollection
		footstep_audio.audio_collections.append(audio)


func play_footstep_sound() -> void:
	if not footstep_audio.audio_collections.is_empty():
		footstep_audio.play_random()


var focus_mutex := Mutex.new()


func get_player() -> MainPlayer:
	return player


func focus_node(node: CanvasItem) -> void:
	if node.is_ancestor_of(camera_focus_marker):
		return
	focus_mutex.lock()
	var parent = camera_focus_marker.get_parent()
	if parent:
		parent.remove_child(camera_focus_marker)
	node.add_child(camera_focus_marker)
	focus_mutex.unlock()


func focus_player() -> void:
	focus_node(player)