from datetime import datetime, timedelta
from http.cookies import SimpleCookie
from sanic.response import text
import pytest
from sanic.cookies import Cookie

# ------------------------------------------------------------ #
#  GET
# ------------------------------------------------------------ #

def test_cookies(app):

    @app.route('/')
    def handler(request):
        response = text('Cookies are: {}'.format(request.cookies['test']))
        response.cookies['right_back'] = 'at you'
        return response

    request, response = app.test_client.get('/', cookies={"test": "working!"})
    response_cookies = SimpleCookie()
    response_cookies.load(response.headers.get('Set-Cookie', {}))

    assert response.text == 'Cookies are: working!'
    assert response_cookies['right_back'].value == 'at you'


@pytest.mark.parametrize("httponly,expected", [
        (False, False),
        (True, True),
])
def test_false_cookies_encoded(app, httponly, expected):

    @app.route('/')
    def handler(request):
        response = text('hello cookies')
        response.cookies['hello'] = 'world'
        response.cookies['hello']['httponly'] = httponly
        return text(response.cookies['hello'].encode('utf8'))

    request, response = app.test_client.get('/')

    assert ('HttpOnly' in response.text) == expected


@pytest.mark.parametrize("httponly,expected", [
        (False, False),
        (True, True),
])
def test_false_cookies(app, httponly, expected):

    @app.route('/')
    def handler(request):
        response = text('hello cookies')
        response.cookies['right_back'] = 'at you'
        response.cookies['right_back']['httponly'] = httponly
        return response

    request, response = app.test_client.get('/')
    response_cookies = SimpleCookie()
    response_cookies.load(response.headers.get('Set-Cookie', {}))

    assert ('HttpOnly' in response_cookies['right_back'].output()) == expected


def test_http2_cookies(app):

    @app.route('/')
    async def handler(request):
        response = text('Cookies are: {}'.format(request.cookies['test']))
        return response

    headers = {'cookie': 'test=working!'}
    request, response = app.test_client.get('/', headers=headers)

    assert response.text == 'Cookies are: working!'


def test_cookie_options(app):

    @app.route('/')
    def handler(request):
        response = text("OK")
        response.cookies['test'] = 'at you'
        response.cookies['test']['httponly'] = True
        response.cookies['test']['expires'] = (datetime.now() +
                                               timedelta(seconds=10))
        return response

    request, response = app.test_client.get('/')
    response_cookies = SimpleCookie()
    response_cookies.load(response.headers.get('Set-Cookie', {}))

    assert response_cookies['test'].value == 'at you'
    assert response_cookies['test']['httponly'] is True


def test_cookie_deletion(app):

    @app.route('/')
    def handler(request):
        response = text("OK")
        del response.cookies['i_want_to_die']
        response.cookies['i_never_existed'] = 'testing'
        del response.cookies['i_never_existed']
        return response

    request, response = app.test_client.get('/')
    response_cookies = SimpleCookie()
    response_cookies.load(response.headers.get('Set-Cookie', {}))

    assert int(response_cookies['i_want_to_die']['max-age']) == 0
    with pytest.raises(KeyError):
        response.cookies['i_never_existed']


def test_cookie_reserved_cookie():
    with pytest.raises(expected_exception=KeyError) as e:
        Cookie("domain", "testdomain.com")
        assert e.message == "Cookie name is a reserved word"


def test_cookie_illegal_key_format():
    with pytest.raises(expected_exception=KeyError) as e:
        Cookie("testå", "test")
        assert e.message == "Cookie key contains illegal characters"


def test_cookie_set_unknown_property():
    c = Cookie("test_cookie", "value")
    with pytest.raises(expected_exception=KeyError) as e:
        c["invalid"] = "value"
        assert e.message == "Unknown cookie property"