

import random
import sys

from . import cryptomath_module as cryptomath

__snake_case							:			Tuple      		= (
    r""" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`"""
    r"""abcdefghijklmnopqrstuvwxyz{|}~"""
)


def 				_UpperCAmelCase							(	a__     ,  a__     ,  a__):

			'''simple docstring'''



			if mode == "encrypt":
						if key_a == 1:
									sys.exit(
									    """The affine cipher becomes weak when key """
									    """A is set to 1. Choose different key""")
						if key_b == 0:
									sys.exit(
									    """The affine cipher becomes weak when key """
									    """B is set to 0. Choose different key""")
			if key_a < 0 or key_b < 0 or key_b > len(a__) - 1:
						sys.exit(
						    """Key A must be greater than 0 and key B must """
						    f'''be between 0 and {len(a__) - 1}.''')
			if cryptomath.gcd(a__     ,  len(a__)) != 1:
						sys.exit(
						    f'''Key A {key_a} and the symbol set size {len(a__)} '''
						    """are not relatively prime. Choose a different key.""")


def 				_UpperCAmelCase							(	a__     ,  a__):

			'''simple docstring'''



			a_       ,				a_	:	List[Any]          =   divmod(a__     ,  len(a__))
			check_keys(a__     ,  a__     ,  """encrypt""")
			a_	:	List[Any]          =   """"""
			for symbol in message:
						if symbol in SYMBOLS:
									a_	:	Tuple          =   SYMBOLS.find(a__)
									cipher_text += SYMBOLS[(sym_index * key_a + key_b) % len(a__)]
						else:
									cipher_text += symbol
			return cipher_text


def 				_UpperCAmelCase							(	a__     ,  a__):

			'''simple docstring'''



			a_       ,				a_	:	int          =   divmod(a__     ,  len(a__))
			check_keys(a__     ,  a__     ,  """decrypt""")
			a_	:	List[str]          =   """"""
			a_	:	int          =   cryptomath.find_mod_inverse(a__     ,  len(a__))
			for symbol in message:
						if symbol in SYMBOLS:
									a_	:	str          =   SYMBOLS.find(a__)
									plain_text += SYMBOLS[
									    (sym_index - key_b) * mod_inverse_of_key_a % len(a__)
									]
						else:
									plain_text += symbol
			return plain_text


def 				_UpperCAmelCase							(	):

			'''simple docstring'''



			while True:
						a_	:	Union[str, Any]          =   random.randint(2     ,  len(a__))
						a_	:	str          =   random.randint(2     ,  len(a__))
						if cryptomath.gcd(a__     ,  len(a__)) == 1 and key_b % len(a__) != 0:
									return key_b * len(a__) + key_b


def 				_UpperCAmelCase							(	):

			'''simple docstring'''



			a_	:	str          =   input("""Enter message: """).strip()
			a_	:	Optional[int]          =   int(input("""Enter key [2000 - 9000]: """).strip())
			a_	:	Tuple          =   input("""Encrypt/Decrypt [E/D]: """).strip().lower()

			if mode.startswith("""e"""):
						a_	:	Any          =   """encrypt"""
						a_	:	str          =   encrypt_message(a__     ,  a__)
			elif mode.startswith("""d"""):
						a_	:	int          =   """decrypt"""
						a_	:	Tuple          =   decrypt_message(a__     ,  a__)
			print(f'''\n{mode.title()}ed text: \n{translated}''')


if __name__ == "__main__":
	import doctest

	doctest.testmod()
	# main()





from cva import destroyAllWindows, imread, imshow, waitKey


def 				_UpperCAmelCase							(	a__     ,  a__):

			'''simple docstring'''



			a_       ,				a_	:	Optional[int]          =   img.shape[0], img.shape[1]

			def to_grayscale(a__     ,  a__     ,  a__):
						return 0.2126 * red + 0.587 * green + 0.114 * blue

			def normalize(a__):
						return min(a__     ,  2_5_5)

			for i in range(a__):
						for j in range(a__):
									a_	:	Optional[Any]          =   int(to_grayscale(*img[i][j]))
									a_	:	Union[str, Any]          =   [
									    normalize(a__),
									    normalize(greyscale + factor),
									    normalize(greyscale + 2 * factor),
									]

			return img


if __name__ == "__main__":
	# read original image
	__snake_case							:			Dict      		= {
	    percentage: imread("""image_data/lena.jpg""", 1) for percentage in (10, 20, 30, 40)
	}

	for percentage, img in images.items():
		make_sepia(img, percentage)

	for percentage, img in images.items():
		imshow(F"""Original image with sepia (factor: {percentage})""", img)

	waitKey(0)
	destroyAllWindows()


