'''for an example of printing a string of bits in binary, octal, hex, and base64

Creates a string of 120 random bits by decoding a base64 string
(flawed, because I skipped two characters).

Then, converts the string to a bytes array. 

'''

import random
import base64
import math

# flawed, incomplete
base64_charset = 'ABCDEFGHIJKLMNOPQRSTUVXYZ' + 'abcdefghijklmnopqrstuvxyz' + '0123456789'

# rand_chars = [ random.choice(base64_charset) for i in range(20) ]
# rand_str = ''.join(rand_chars)
# rand_bytes = bytes(rand_str,'utf-8')
# rand_int = int.from_bytes(rand_bytes, 'little')

rand_int = random.getrandbits(120)

print(rand_int)
## printing
bin_str = "{0:b}".format(rand_int)
oct_str = "{0:o}".format(rand_int)
dec_str = "{}".format(rand_int)
hex_str = "{0:x}".format(rand_int)
b64_str = base64.encodebytes(rand_int.to_bytes(15,'big'))

print([len(bin_str), len(oct_str), len(dec_str), len(hex_str), len(b64_str)])

def print_rand_bits(n):
    rand_int = random.getrandbits(n)
    print(['rand_int',rand_int])

    rand_bytes = rand_int.to_bytes(math.ceil(n/8), 'big')
    print(['rand_bytes',rand_bytes])

    b64_str = base64.b64encode(rand_bytes)
    print(['b64_str',b64_str])

    bin_str = "{0:b}".format(rand_int)
    oct_str = "{0:o}".format(rand_int)
    dec_str = "{}".format(rand_int)
    hex_str = "{0:x}".format(rand_int)

    print(['lengths',len(bin_str), len(oct_str), len(dec_str), len(hex_str), len(b64_str)])

    print("bin: {}".format(bin_str))
    print("oct: {}".format(oct_str))
    print("dec: {}".format(dec_str))
    print("hex: {}".format(hex_str))
    print("b64: {}".format(b64_str))


print('================================================================')
for n in range(20):
    print_rand_bits(6*n+6)