import os
import uuid
from django.utils.deconstruct import deconstructible

# Ref: https://stackoverflow.com/questions/2673647/enforce-unique-upload-file-names-using-django
@deconstructible
class RandomFileName(object):
	def __init__(self, path):
		self.path = os.path.join(path, "%s/%s/%s%s")

	def __call__(self, _, filename):
		extension = os.path.splitext(filename)[1]
		file_uuid = uuid.uuid4()
		uuid_str = str(file_uuid)
		first_char = uuid_str[0]
		second_char = uuid_str[1]

		return self.path % (first_char, second_char, file_uuid, extension)