import os

CHAR_LOWERCASE = 'abcdefghijklmnopqrstuvwxyz'
CHAR_UPPERCASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
CHAR_NUMERIC = '0123456789'

VALID_NAME_CHARS = CHAR_UPPERCASE + CHAR_LOWERCASE + CHAR_NUMERIC + "_-"

VALID_RECIPE_NAME_CHARS = VALID_NAME_CHARS
VALID_PATTERN_NAME_CHARS = VALID_NAME_CHARS
VALID_RULE_NAME_CHARS = VALID_NAME_CHARS
VALID_VARIABLE_NAME_CHARS = CHAR_UPPERCASE + CHAR_LOWERCASE + CHAR_NUMERIC + "_"

VALID_JUPYTER_NOTEBOOK_FILENAME_CHARS = VALID_NAME_CHARS + "." + os.path.sep
VALID_JUPYTER_NOTEBOOK_EXTENSIONS = [".ipynb"]

VALID_TRIGGERING_PATH_CHARS = VALID_NAME_CHARS + "." + os.path.sep