120 lines
3.4 KiB
GDScript
120 lines
3.4 KiB
GDScript
class_name NetworkProfilePreferences
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extends Node
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const FORMAT_VERSION: int = 1
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const PROFILE_PATH: String = "user://network_profile.json"
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const TEMP_PATH: String = "user://network_profile.json.tmp"
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const BACKUP_PATH: String = "user://network_profile.json.backup"
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var profile_id: String = ""
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var display_name: String = "Player"
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var created_at_unix: int = 0
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func load_or_create() -> bool:
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_recover_interrupted_write()
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if FileAccess.file_exists(PROFILE_PATH):
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if _load_existing():
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return true
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var corrupt_path: String = (
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"user://network_profile.corrupt.%d.json"
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% int(Time.get_unix_time_from_system())
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)
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if not _rename(PROFILE_PATH, corrupt_path):
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push_warning("Invalid network profile was preserved and not overwritten.")
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return false
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profile_id = Crypto.new().generate_random_bytes(16).hex_encode()
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if profile_id.is_empty():
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profile_id = "%d-%d" % [
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int(Time.get_unix_time_from_system()),
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Time.get_ticks_usec(),
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]
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display_name = "Player"
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created_at_unix = int(Time.get_unix_time_from_system())
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return _save_atomic()
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func _load_existing() -> bool:
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var file := FileAccess.open(PROFILE_PATH, FileAccess.READ)
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if file == null:
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return false
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var json := JSON.new()
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var error: Error = json.parse(file.get_as_text())
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file.close()
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if error != OK or typeof(json.data) != TYPE_DICTIONARY:
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return false
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var data: Dictionary = json.data
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if (
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data.get("format_version") != FORMAT_VERSION
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or typeof(data.get("profile_id")) != TYPE_STRING
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or typeof(data.get("display_name")) != TYPE_STRING
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or typeof(data.get("created_at_unix")) not in [TYPE_INT, TYPE_FLOAT]
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):
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return false
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var loaded_id: String = data["profile_id"]
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var loaded_name: String = data["display_name"]
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if (
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loaded_id.is_empty()
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or loaded_id.length() > NetworkProtocol.MAX_PROFILE_ID_LENGTH
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or loaded_name.is_empty()
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or loaded_name.length() > NetworkProtocol.MAX_DISPLAY_NAME_LENGTH
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):
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return false
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profile_id = loaded_id
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display_name = loaded_name
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created_at_unix = int(data["created_at_unix"])
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return true
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func _save_atomic() -> bool:
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var data: Dictionary = {
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"format_version": FORMAT_VERSION,
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"profile_id": profile_id,
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"display_name": display_name,
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"created_at_unix": created_at_unix,
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}
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var file := FileAccess.open(TEMP_PATH, FileAccess.WRITE)
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if file == null:
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return false
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file.store_string(JSON.stringify(data, "\t"))
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file.flush()
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var error: Error = file.get_error()
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file.close()
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if error != OK:
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_remove_if_present(TEMP_PATH)
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return false
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_remove_if_present(BACKUP_PATH)
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var had_primary: bool = FileAccess.file_exists(PROFILE_PATH)
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if had_primary and not _rename(PROFILE_PATH, BACKUP_PATH):
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_remove_if_present(TEMP_PATH)
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return false
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if not _rename(TEMP_PATH, PROFILE_PATH):
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if had_primary:
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_rename(BACKUP_PATH, PROFILE_PATH)
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return false
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_remove_if_present(BACKUP_PATH)
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return true
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func _recover_interrupted_write() -> void:
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if FileAccess.file_exists(PROFILE_PATH):
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_remove_if_present(TEMP_PATH)
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_remove_if_present(BACKUP_PATH)
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return
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if FileAccess.file_exists(BACKUP_PATH):
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_rename(BACKUP_PATH, PROFILE_PATH)
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_remove_if_present(TEMP_PATH)
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func _rename(from_path: String, to_path: String) -> bool:
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return DirAccess.rename_absolute(
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ProjectSettings.globalize_path(from_path),
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ProjectSettings.globalize_path(to_path)
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) == OK
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func _remove_if_present(path: String) -> bool:
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return (
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not FileAccess.file_exists(path)
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or DirAccess.remove_absolute(ProjectSettings.globalize_path(path)) == OK
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)
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