Simple python port of https://github.com/zackmark29/NetflixESNGenerator for cli use

esngen.py

import argparse
from typing import Tuple

"""

Examples:

esngen.py -p a -dt tv -4k -mf hisense -m 75A6G -sid 19793 -c

NFANDROID2-PRV-HISEN75A6G-19793-97FB2CAF2688F9459551F0096E075B68B6FF551FC8636BFAA35B4E68258D2B26

esngen.py -p c

NFCDCH-02-45A51BA00DEEBDAF20796A164BECC6

"""

aparser = argparse.ArgumentParser()
aparser.add_argument('-p', '--platform', choices = ['c', 'a'], help = 'Chrome or Android', required = True)
aparser.add_argument('-dt', '--devicetype', choices = ['tb', 'p', 'tv'], help = 'Tablet, Phone, or TV', required = False)
aparser.add_argument('-mf', '--manufacturer', required = False)
aparser.add_argument('-m', '--model', required = False)
aparser.add_argument('-sid', '--systemid', required = False)
aparser.add_argument('-4k', dest = 'uhd', help = '4K capable device', action = 'store_true')
aparser.add_argument('-c', dest = 'copy', help = 'Copy ESN to clipboard', action = 'store_true')

args = aparser.parse_args()

def get_types(platform: str, **kwargs) -> Tuple[str, Tuple[None, str], bool]:
    prefixes = {'Chrome':'NFCDCH-02-', 'Android':'NFANDROID1', 'Android4K':'NFANDROID2'}
    suffixes = {'Tablet':'-PRV-T', 'Phone':'-PRV-P', 'TV':'-PRV'}
    
    if platform == 'c': 
        browser = True
        prefix = prefixes['Chrome']
        suffix = None
    elif platform == 'a':
        browser = False
        devicetype = kwargs['devicetype']
        prefix = (prefixes['Android4K'] if args.uhd else prefixes['Android'])
        suffix = (suffixes['Tablet'] if devicetype == 'tb' 
                  else suffixes['Phone'] if devicetype == 'p' 
                  else suffixes['TV'])
                
    return prefix, suffix, browser

def generate(prefix: str, suffix: Tuple[None, str], browser: bool, **kwargs) -> str:
    def make_sn(len: int) -> str:
        import random
        return "".join(random.choice("0123456789ABCDEF") for _ in range(len))
    
    sn = (make_sn(64) if not browser else make_sn(30))
    
    if not browser:   
        manufacturer = kwargs['manufacturer'].upper()[:5]
        model = kwargs['model'].upper()
        systemid = kwargs['systemid']
    
        if len(systemid) > 5:
            exit('Incorrect system id length')
                   
        return f'\n{prefix}{suffix}-{manufacturer}{model}-{systemid}-{sn}'
    
    return f'\n{prefix}{sn}'
    
prefix, suffix, browser = get_types(platform = args.platform, devicetype = args.devicetype)

esn = generate(prefix = prefix, suffix = suffix, browser = browser, manufacturer = args.manufacturer, model = args.model, systemid = args.systemid)

if args.copy:
    import pyperclip
    pyperclip.copy(esn)

print(esn)