extends Node

signal on_collectible_unlocked(collectible_id: String)
signal on_photo_saved(filePath: String)

var collectibles_library: CollectibleLibrary = preload("res://core/photo_mode/collectible_library.tres")

var unlocked_collectibles_ids: Array[String] = []
var saved_photos: Array[String] = []

func _ready() -> void:
	add_to_group("Saveable")
	load_save_data()

func unlock_collectible(collectible_id: String) -> void:
	if not collectible_id in unlocked_collectibles_ids:
		var new_collectible = get_collectible_by_id(collectible_id)
		if new_collectible:
			unlocked_collectibles_ids.append(collectible_id)
			on_collectible_unlocked.emit(collectible_id)

func get_collectible_by_id(id: String) -> CollectibleResource:
	for collectible in collectibles_library.collectibles:
		if collectible.id == id:
			return collectible
	return null

func get_all_collectibles() -> Array[CollectibleResource]:
	return collectibles_library.collectibles

func get_unlocked_collectible_ids() -> Array[String]:
	return unlocked_collectibles_ids

func save_photo_to_disk_async() -> void:
	await RenderingServer.frame_post_draw
	var image = get_viewport().get_texture().get_image()
	
	if not DirAccess.dir_exists_absolute("user://photos"):
		DirAccess.make_dir_absolute("user://photos")
	
	var timestamp = str(Time.get_unix_time_from_system())
	var file_path = "user://photos/photo_" + timestamp + ".png"
	image.save_png(file_path)
	
	saved_photos.append(file_path)
	on_photo_saved.emit(file_path)

func get_save_data() -> Dictionary:
	return {
		"unlocked_collectibles_ids": unlocked_collectibles_ids,
		"saved_photos": saved_photos
	}

func load_save_data() -> void:
	var my_path = str(get_path())
	if GameState.save_data.has(my_path):
		var data = GameState.save_data[my_path]
		if data.has("unlocked_collectibles_ids"):
			var loaded_ids = data["unlocked_collectibles_ids"]
			unlocked_collectibles_ids.clear()
			for id in loaded_ids:
				unlocked_collectibles_ids.append(str(id))
				
		if data.has("saved_photos"):
			var loaded_photos = data["saved_photos"]
			saved_photos.clear()
			for photo in loaded_photos:
				saved_photos.append(str(photo))
	else:
		unlocked_collectibles_ids.append("cane")