game/scripts/autoload/DownloadManager.gd

extends Node

func _ready() -> void:
	print(OS.get_user_data_dir())

func create_file(file_path: String) -> void:
	var base_dir = file_path.get_base_dir()
	if !DirAccess.dir_exists_absolute(base_dir):
		DirAccess.make_dir_recursive_absolute(base_dir)
	var file = FileAccess.open(file_path, FileAccess.WRITE)
	file.close()

func download_file(server_path: String, local_path: String) -> void:
	var http = HTTPRequest.new()
	add_child(http)
	var file_path = local_path
	if !FileAccess.file_exists(file_path):
		create_file(file_path)
	http.download_file = file_path
	http.request(server_path)

func download_defs(type: String, origin: String) -> void:
	var list_file = FileAccess.open("user://download/source/%ss/list.json" % [type], FileAccess.READ)
	var list_text = list_file.get_as_text()
	print(list_text)
	var list = JSON.parse_string(list_text)
	if !list:
		return
	for k in list:
		var filename = list[k]
		download_file("%s%s/id/%s" % [origin, type, k], "user://download/source/%ss/%s.json" % [type, filename])

func download_assets(origin: String) -> void:
	var list_file = FileAccess.open("user://download/source/assets/list.json", FileAccess.READ)
	var list_text = list_file.get_as_text()
	print(list_text)
	var list = JSON.parse_string(list_text)
	if !list:
		return
	for k in list["pics"]:
		var filename = list["pics"][k]
		download_file("%sasset/pic/%s" % [origin, k], "user://download/source/assets/pics/%s" % [filename])
	for k in list["sounds"]:
		var filename = list["sounds"][k]
		download_file("%sasset/sound/%s" % [origin, k], "user://download/source/assets/sounds/%s" % [filename])

func download_from_origin() -> int:
	var origin = GameManager.data_origin
	var http = HTTPRequest.new()
	add_child(http)

	if origin.substr(0, 4) != "http":
		return 1
	
	if http.request(origin) != OK:
		return 2

	if origin[-1] != "/":
		origin = origin + "/"

	download_file(origin + "card/list", "user://download/source/cards/list.json")
	download_file(origin + "reaction/list", "user://download/source/reactions/list.json")
	download_file(origin + "matter/list", "user://download/source/matters/list.json")
	download_file(origin + "asset/list", "user://download/source/assets/list.json")
	
	download_defs("card", origin)
	download_defs("reaction", origin)
	download_defs("matter", origin)
	
	download_assets(origin)

	return 0

func load_resource():
	pass