import time
from unittest import mock

import pytest

from mitmproxy.net.http import cookies

cookie_pairs = [
    ["=uno", [["", "uno"]]],
    ["", []],
    ["one=uno", [["one", "uno"]]],
    ["one", [["one", ""]]],
    ["one=uno; two=due", [["one", "uno"], ["two", "due"]]],
    ['one="uno"; two="\\due"', [["one", "uno"], ["two", "due"]]],
    ['one="un\\"o"', [["one", 'un"o']]],
    ['one="uno,due"', [["one", "uno,due"]]],
    ["one=uno; two; three=tre", [["one", "uno"], ["two", ""], ["three", "tre"]]],
    [
        "_lvs2=zHai1+Hq+Tc2vmc2r4GAbdOI5Jopg3EwsdUT9g=; _rcc2=53VdltWl+Ov6ordflA==;",
        [
            ["_lvs2", "zHai1+Hq+Tc2vmc2r4GAbdOI5Jopg3EwsdUT9g="],
            ["_rcc2", "53VdltWl+Ov6ordflA=="],
        ],
    ],
]


def test_read_key():
    tokens = [
        [("foo", 0), ("foo", 3)],
        [("foo", 1), ("oo", 3)],
        [(" foo", 0), (" foo", 4)],
        [(" foo", 1), ("foo", 4)],
        [(" foo;", 1), ("foo", 4)],
        [(" foo=", 1), ("foo", 4)],
        [(" foo=bar", 1), ("foo", 4)],
    ]
    for q, a in tokens:
        assert cookies._read_key(*q) == a


def test_read_quoted_string():
    tokens = [
        [('"foo" x', 0), ("foo", 5)],
        [('"f\\oo" x', 0), ("foo", 6)],
        [(r'"f\\o" x', 0), (r"f\o", 6)],
        [(r'"f\\" x', 0), (r"f" + "\\", 5)],
        [('"fo\\"" x', 0), ('fo"', 6)],
        [('"foo" x', 7), ("", 8)],
    ]
    for q, a in tokens:
        assert cookies._read_quoted_string(*q) == a


def test_read_cookie_pairs():
    vals = [
        ["=uno", [["", "uno"]]],
        ["one", [["one", ""]]],
        ["one=two", [["one", "two"]]],
        ["one=", [["one", ""]]],
        ['one="two"', [["one", "two"]]],
        ['one="two"; three=four', [["one", "two"], ["three", "four"]]],
        [
            'one="two"; three=four; five',
            [["one", "two"], ["three", "four"], ["five", ""]],
        ],
        ['one="\\"two"; three=four', [["one", '"two'], ["three", "four"]]],
    ]
    for s, lst in vals:
        ret, off = cookies._read_cookie_pairs(s)
        assert ret == lst


def test_pairs_roundtrips():
    for s, expected in cookie_pairs:
        ret, off = cookies._read_cookie_pairs(s)
        assert ret == expected

        s2 = cookies._format_pairs(expected)
        ret, off = cookies._read_cookie_pairs(s2)
        assert ret == expected


def test_cookie_roundtrips():
    for s, expected in cookie_pairs:
        ret = cookies.parse_cookie_header(s)
        assert ret == expected

        s2 = cookies.format_cookie_header(expected)
        ret = cookies.parse_cookie_header(s2)
        assert ret == expected


def test_parse_set_cookie_pairs():
    pairs = [
        ["=", [[("", "")]]],
        ["=;foo=bar", [[("", ""), ("foo", "bar")]]],
        ["=;=;foo=bar", [[("", ""), ("", ""), ("foo", "bar")]]],
        ["=uno", [[("", "uno")]]],
        ["one=uno", [[("one", "uno")]]],
        ["one=un\x20", [[("one", "un\x20")]]],
        ["one=uno; foo", [[("one", "uno"), ("foo", None)]]],
        [
            "mun=1.390.f60; "
            "expires=sun, 11-oct-2015 12:38:31 gmt; path=/; "
            "domain=b.aol.com",
            [
                [
                    ("mun", "1.390.f60"),
                    ("expires", "sun, 11-oct-2015 12:38:31 gmt"),
                    ("path", "/"),
                    ("domain", "b.aol.com"),
                ]
            ],
        ],
        [
            r"rpb=190%3d1%2616726%3d1%2634832%3d1%2634874%3d1; "
            "domain=.rubiconproject.com; "
            "expires=mon, 11-may-2015 21:54:57 gmt; "
            "path=/",
            [
                [
                    ("rpb", r"190%3d1%2616726%3d1%2634832%3d1%2634874%3d1"),
                    ("domain", ".rubiconproject.com"),
                    ("expires", "mon, 11-may-2015 21:54:57 gmt"),
                    ("path", "/"),
                ]
            ],
        ],
    ]
    for s, expected in pairs:
        ret, off = cookies._read_set_cookie_pairs(s)
        assert ret == expected

        s2 = cookies._format_set_cookie_pairs(expected[0])
        ret2, off = cookies._read_set_cookie_pairs(s2)
        assert ret2 == expected


def test_parse_set_cookie_header():
    def set_cookie_equal(obs, exp):
        assert obs[0] == exp[0]
        assert obs[1] == exp[1]
        assert obs[2].items(multi=True) == exp[2]

    vals = [
        ["", []],
        [";", []],
        ["=uno", [("", "uno", ())]],
        ["one=uno", [("one", "uno", ())]],
        ["one=uno; foo=bar", [("one", "uno", (("foo", "bar"),))]],
        [
            "one=uno; foo=bar; foo=baz",
            [("one", "uno", (("foo", "bar"), ("foo", "baz")))],
        ],
        # Comma Separated Variant of Set-Cookie Headers
        [
            "foo=bar, doo=dar",
            [
                ("foo", "bar", ()),
                ("doo", "dar", ()),
            ],
        ],
        [
            "foo=bar; path=/, doo=dar; roo=rar; zoo=zar",
            [
                ("foo", "bar", (("path", "/"),)),
                ("doo", "dar", (("roo", "rar"), ("zoo", "zar"))),
            ],
        ],
        [
            "foo=bar; expires=Mon, 24 Aug 2133",
            [
                ("foo", "bar", (("expires", "Mon, 24 Aug 2133"),)),
            ],
        ],
        [
            "foo=bar; expires=Mon, 24 Aug 2133 00:00:00 GMT, doo=dar",
            [
                ("foo", "bar", (("expires", "Mon, 24 Aug 2133 00:00:00 GMT"),)),
                ("doo", "dar", ()),
            ],
        ],
    ]
    for s, expected in vals:
        ret = cookies.parse_set_cookie_header(s)
        if expected:
            for i in range(len(expected)):
                set_cookie_equal(ret[i], expected[i])

            s2 = cookies.format_set_cookie_header(ret)
            ret2 = cookies.parse_set_cookie_header(s2)
            for i in range(len(expected)):
                set_cookie_equal(ret2[i], expected[i])
        else:
            assert not ret


def test_refresh_cookie():
    # Invalid expires format, sent to us by Reddit.
    c = "rfoo=bar; Domain=reddit.com; expires=Thu, 31 Dec 2133 23:59:59 GMT; Path=/"
    assert cookies.refresh_set_cookie_header(c, 60)

    c = "MOO=BAR; Expires=Tue, 08-Mar-2011 00:20:38 GMT; Path=foo.com; Secure"
    assert "00:21:38" in cookies.refresh_set_cookie_header(c, 60)

    c = "rfoo=bar; Domain=reddit.com; expires=Thu, 31 Dec 2133; Path=/"
    assert "expires" not in cookies.refresh_set_cookie_header(c, 60)

    c = "foo,bar"
    with pytest.raises(ValueError):
        cookies.refresh_set_cookie_header(c, 60)

    # https://github.com/mitmproxy/mitmproxy/issues/773
    c = ">=A"
    assert cookies.refresh_set_cookie_header(c, 60)

    # https://github.com/mitmproxy/mitmproxy/issues/1118
    c = "foo:bar=bla"
    assert cookies.refresh_set_cookie_header(c, 0)
    c = "foo/bar=bla"
    assert cookies.refresh_set_cookie_header(c, 0)

    # https://github.com/mitmproxy/mitmproxy/issues/2250
    c = ""
    assert cookies.refresh_set_cookie_header(c, 60) == ""


@mock.patch("time.time")
def test_get_expiration_ts(*args):
    # Freeze time
    now_ts = 17
    time.time.return_value = now_ts

    CA = cookies.CookieAttrs
    F = cookies.get_expiration_ts

    assert F(CA([("Expires", "Thu, 01-Jan-1970 00:00:00 GMT")])) == 0
    assert F(CA([("Expires", "Mon, 24-Aug-2133 00:00:00 GMT")])) == 5164128000

    assert F(CA([("Max-Age", "0")])) == now_ts
    assert F(CA([("Max-Age", "31")])) == now_ts + 31


def test_is_expired():
    CA = cookies.CookieAttrs

    # A cookie can be expired
    # by setting the expire time in the past
    assert cookies.is_expired(CA([("Expires", "Thu, 01-Jan-1970 00:00:00 GMT")]))

    # or by setting Max-Age to 0
    assert cookies.is_expired(CA([("Max-Age", "0")]))

    # or both
    assert cookies.is_expired(
        CA([("Expires", "Thu, 01-Jan-1970 00:00:00 GMT"), ("Max-Age", "0")])
    )

    assert not cookies.is_expired(CA([("Expires", "Mon, 24-Aug-2133 00:00:00 GMT")]))
    assert not cookies.is_expired(CA([("Max-Age", "1")]))
    assert not cookies.is_expired(
        CA([("Expires", "Wed, 15-Jul-2133 00:00:00 GMT"), ("Max-Age", "1")])
    )

    assert not cookies.is_expired(CA([("Max-Age", "nan")]))
    assert not cookies.is_expired(CA([("Expires", "false")]))


def test_group_cookies():
    CA = cookies.CookieAttrs
    groups = [
        [
            "one=uno; foo=bar; foo=baz",
            [("one", "uno", CA([])), ("foo", "bar", CA([])), ("foo", "baz", CA([]))],
        ],
        [
            "one=uno; Path=/; foo=bar; Max-Age=0; foo=baz; expires=24-08-1993",
            [
                ("one", "uno", CA([("Path", "/")])),
                ("foo", "bar", CA([("Max-Age", "0")])),
                ("foo", "baz", CA([("expires", "24-08-1993")])),
            ],
        ],
        ["one=uno;", [("one", "uno", CA([]))]],
        [
            "one=uno; Path=/; Max-Age=0; Expires=24-08-1993",
            [
                (
                    "one",
                    "uno",
                    CA([("Path", "/"), ("Max-Age", "0"), ("Expires", "24-08-1993")]),
                )
            ],
        ],
        ["path=val; Path=/", [("path", "val", CA([("Path", "/")]))]],
    ]

    for c, expected in groups:
        observed = cookies.group_cookies(cookies.parse_cookie_header(c))
        assert observed == expected
