from random import randint as rint


chrome_ver = [
    '77.0', '77.0', '76.0.3809', '75.0.3770', '74.0.3729', '73.0.3683',
    '72.0.3626',  '71.0.3578.80', '71.0.3578.98', '70.0.3538.102',
    '70.0.3538.80', '70.0.3538.67', '70.0.3538.77', '70.0.3538.110',
    '69.0.3497.100', '69.0.3497.81', '69.0.3497.92', '68.0.3440.91',
    '68.0.3440.106', '68.0.3440.84', '68.0.3440.1805', '68.0.3440.75',
    '67.0.3396.87', '67.0.3396.99', '67.0.3396.79', '67.0.3396.62',
    '66.0.3359.117', '66.0.3359.139', '66.0.3359.181', '66.0.3359.158',
    '66.0.3359.170', '65.0.3325.181', '65.0.3325.109', '65.0.3325.162',
    '64.0.3282.186', '64.0.3282.140', '64.0.3282.137', '64.0.3282.167',
    '64.0.3282.119', '63.0.3239.83', '63.0.3239.111', '63.0.3239.108',
    '63.0.3239.84', '63.0.3239.132', '62.0.3202.94', '62.0.3202.89',
    '62.0.3202.84', '62.0.3202.62', '61.0.3163.100', '61.0.3163.79',
    '61.0.3163.98', '60.0.3112.78', '60.0.3112.90', '60.0.3112.113',
    '60.0.3112.116'
]


def firefox() -> str:
    main = 'Mozilla/5.0 (%PLAT%; rv:%VER%) Gecko/20100101 Firefox/%VER%'

    ver = [
        '67.0', '67.0.1', '67.0.2', '66.0', '66.0.1', '66.0.2', '66.0.3',
        '66.0.4', '66.0.5', '65.0', '65.0.1', '64.0', '64.0.2', '63.0',
        '63.0.1', '63.0.3', '62.0', '62.0.2', '62.0.3', '61.0', '61.0.1',
        '61.0.2', '60.0', '60.0.1', '60.0.2', '60.1.0', '60.2.0', '60.2.1',
        '60.2.2', '60.3.0', '60.4.0', '60.5.0', '60.5.1', '60.5.2', '59.0',
        '59.0.1', '59.0.2', '59.0.3', '58.0', '58.0.1', '58.0.2', '57.0',
        '57.0.1', '57.0.2', '57.0.3', '57.0.4', '56.0', '56.0.1', '56.0.2',
        '55.0', '55.0.1', '55.0.2', '55.0.3', '54.0', '54.0.1', '53.0',
        '53.0.2', '53.0.3', '52.0', '52.0.1', '52.0.2', '52.1.0', '52.1.1',
        '52.1.2', '52.2.0', '52.2.1', '52.3.0', '52.4.0', '52.4.1', '52.5.0',
        '52.5.2', '52.5.3', '52.6.0', '52.7.0', '52.7.1', '52.7.2', '52.7.3',
        '52.7.4', '52.8.0', '52.8.1', '52.9.0', '51.0', '51.0.1', '50.0',
        '50.0.1', '50.0.2'
    ]

    return main.replace('%VER%', ver[rint(0, len(ver)-1)])


def chrome() -> str:
    main = 'Mozilla/5.0 (%PLAT%) AppleWebKit/537.36 (KHTML,' + \
        ' like Gecko) Chrome/%VER% Safari/537.36'

    return main.replace('%VER%', chrome_ver[rint(0, len(chrome_ver)-1)])


def opera() -> str:
    main = 'Mozilla/5.0 (%PLAT%) AppleWebKit/537.36 (KHTML, like Gecko) ' + \
        'Chrome/%CVER% Safari/537.36 OPR/%OVER%'

    ver = [
        '60.0.3255.170', '58.0.3135.127', '58.0.3135.107',
        '57.0.3098.116', '57.0.3098.106', '57.0.3098.91', '56.0.3051.36',
        '56.0.3051.104', '56.0.3051.52', '56.0.3051.116', '56.0.3051.116',
        '56.0.3051.99', '56.0.3051.43', '56.0.3051.52', '55.0.2994.37',
        '55.0.2994.47', '55.0.2994.44', '55.0.2994.61', '55.0.2994.61',
        '54.0.2952.71', '54.0.2952.51', '54.0.2952.64', '54.0.2952.54',
        '54.0.2952.64', '54.0.2952.60', '53.0.2907.68', '53.0.2907.99',
        '53.0.2907.106', '53.0.2907.110', '52.0.2871.99', '52.0.2871.64',
        '52.0.2871.40', '51.0.2830.34', '51.0.2830.55', '51.0.2830.40',
        '50.0.2762.58', '50.0.2762.67'
    ]

    ua = rint(0, len(ver)-1)
    main = main.replace('%OVER%', ver[ua])
    main = main.replace('%CVER%', chrome_ver[ua])

    return main


def random_browser() -> str:
    os = [chrome, opera, firefox]
    return os[rint(0, 2)]()