"""Random code generation utility."""

import secrets

# Character sets
all_visible_characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()-_=+[]{}|;:,.<>?/~`"\'\\'
alphanumeric_characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
digit_characters = '0123456789'
special_characters = '!@#$%^&*()-_=+[]{}|;:,.<>?/~`"\'\\'
uppercase_only = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
lowercase_only = 'abcdefghijklmnopqrstuvwxyz'
lowercase_digits = 'abcdefghijklmnopqrstuvwxyz0123456789'
uppercase_digits = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'


def get_all_visible_characters_code_8():
    """Generate an 8-character code from all visible characters."""
    return ''.join(secrets.choice(all_visible_characters) for _ in range(8))


def get_all_visible_characters_code_6():
    """Generate a 6-character code from all visible characters."""
    return ''.join(secrets.choice(all_visible_characters) for _ in range(6))


def get_all_visible_characters_code(length: int):
    """Generate a code of given length from all visible characters."""
    return ''.join(secrets.choice(all_visible_characters) for _ in range(length))


def get_alphanumeric_characters_code(length: int):
    """Generate a code of given length from alphanumeric characters."""
    return ''.join(secrets.choice(alphanumeric_characters) for _ in range(length))


def get_alphanumeric_characters_code_6():
    """Generate a 6-character code from alphanumeric characters."""
    return ''.join(secrets.choice(alphanumeric_characters) for _ in range(6))


def get_alphanumeric_characters_code_8():
    """Generate an 8-character code from alphanumeric characters."""
    return ''.join(secrets.choice(alphanumeric_characters) for _ in range(8))


def get_digit_characters_code(length: int):
    """Generate a code of given length from digit characters."""
    return ''.join(secrets.choice(digit_characters) for _ in range(length))


def get_digit_characters_code_6():
    """Generate a 6-character code from digit characters."""
    return ''.join(secrets.choice(digit_characters) for _ in range(6))


def get_digit_characters_code_8():
    """Generate an 8-character code from digit characters."""
    return ''.join(secrets.choice(digit_characters) for _ in range(8))