import re

import uuid

from logging import getLogger

from os import path

logger = getLogger(__name__)

def build_batch_filenames(filename: str, start_idx=0, separator: str = "-"):

"""

Create a generator for filenames in sequential order.

Example:

build_batch_filenames('somefile.pdf') will yield filenames:

* somefile-1.pdf

* somefile-2.pdf

* somefile-3.pdf

:param filename: Full filename, including extension

:param start_idx: Starting index number

:param separator:

:return:

"""

idx = start_idx or 0

sep = separator or "-"

file_part, ext = path.splitext(filename)

while True:

yield f"{file_part}{sep}{idx}{ext}"

idx += 1

def create_unique_id(prefix: str = "field") -> str:

"""Create a prefixed unique id."""

return f"{prefix}-{uuid.uuid4().hex}"

def remove_empty_items(dict_obj: dict):

"""Remove null values from a dict."""

return {k: v for k, v in dict_obj.items() if v is not None}

def camel_to_snake(name: str) -> str:

return re.sub(r'(?<!^)(?=[A-Z])', '_', name).lower()