"""tests/test_middleware.py.

Tests the middleware integrated into Hug

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"""
import pytest
from falcon.request import SimpleCookie

import hug
from hug.exceptions import SessionNotFound
from hug.middleware import LogMiddleware, SessionMiddleware
from hug.store import InMemoryStore

api = hug.API(__name__)

# Fix flake8 undefined names (F821)
__hug__ = __hug__  # noqa


def test_session_middleware():
    @hug.get()
    def count(request):
        session = request.context['session']
        counter = session.get('counter', 0) + 1
        session['counter'] = counter
        return counter

    def get_cookies(response):
        simple_cookie = SimpleCookie(response.headers_dict['set-cookie'])
        return {morsel.key: morsel.value for morsel in simple_cookie.values()}

    # Add middleware
    session_store = InMemoryStore()
    middleware = SessionMiddleware(session_store, cookie_name='test-sid')
    __hug__.http.add_middleware(middleware)

    # Get cookies from response
    response = hug.test.get(api, '/count')
    cookies = get_cookies(response)

    # Assert session cookie has been set and session exists in session store
    assert 'test-sid' in cookies
    sid = cookies['test-sid']
    assert session_store.exists(sid)
    assert session_store.get(sid) == {'counter': 1}

    # Assert session persists throughout the requests
    headers = {'Cookie': 'test-sid={}'.format(sid)}
    assert hug.test.get(api, '/count', headers=headers).data == 2
    assert session_store.get(sid) == {'counter': 2}

    # Assert a non-existing session cookie gets ignored
    headers = {'Cookie': 'test-sid=foobarfoo'}
    response = hug.test.get(api, '/count', headers=headers)
    cookies = get_cookies(response)
    assert response.data == 1
    assert not session_store.exists('foobarfoo')
    assert cookies['test-sid'] != 'foobarfoo'


def test_logging_middleware():
    output = []

    class Logger(object):
        def info(self, content):
            output.append(content)

    @hug.middleware_class()
    class CustomLogger(LogMiddleware):
        def __init__(self, logger=Logger()):
            super().__init__(logger=logger)

    @hug.get()
    def test(request):
        return 'data'

    hug.test.get(api, '/test')
    assert output == ['Requested: GET /test None', 'Responded: 200 OK /test application/json']