"""tests/test_middleware.py.

Tests the middleware integrated into Hug

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"""
from http.cookies import SimpleCookie

import pytest

import hug
from hug.exceptions import SessionNotFound
from hug.middleware import CORSMiddleware, 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[0] == "Requested: GET /test None"
    assert len(output[1]) > 0


def test_cors_middleware(hug_api):
    hug_api.http.add_middleware(CORSMiddleware(hug_api, max_age=10))

    @hug.get("/demo", api=hug_api)
    def get_demo():
        return {"result": "Hello World"}

    @hug.get("/demo/{param}", api=hug_api)
    def get_demo(param):
        return {"result": "Hello {0}".format(param)}

    @hug.post("/demo", api=hug_api)
    def post_demo(name: "your name"):
        return {"result": "Hello {0}".format(name)}

    @hug.put("/demo/{param}", api=hug_api)
    def get_demo(param, name):
        old_name = param
        new_name = name
        return {"result": "Goodbye {0} ... Hello {1}".format(old_name, new_name)}

    @hug.delete("/demo/{param}", api=hug_api)
    def get_demo(param):
        return {"result": "Goodbye {0}".format(param)}

    assert hug.test.get(hug_api, "/demo").data == {"result": "Hello World"}
    assert hug.test.get(hug_api, "/demo/Mir").data == {"result": "Hello Mir"}
    assert hug.test.post(hug_api, "/demo", name="Mundo")
    assert hug.test.put(hug_api, "/demo/Carl", name="Junior").data == {
        "result": "Goodbye Carl ... Hello Junior"
    }
    assert hug.test.delete(hug_api, "/demo/Cruel_World").data == {"result": "Goodbye Cruel_World"}

    response = hug.test.options(hug_api, "/demo")
    methods = response.headers_dict["access-control-allow-methods"].replace(" ", "")
    allow = response.headers_dict["allow"].replace(" ", "")
    assert set(methods.split(",")) == set(["OPTIONS", "GET", "POST"])
    assert set(allow.split(",")) == set(["OPTIONS", "GET", "POST"])

    response = hug.test.options(hug_api, "/demo/1")
    methods = response.headers_dict["access-control-allow-methods"].replace(" ", "")
    allow = response.headers_dict["allow"].replace(" ", "")
    assert set(methods.split(",")) == set(["OPTIONS", "GET", "DELETE", "PUT"])
    assert set(allow.split(",")) == set(["OPTIONS", "GET", "DELETE", "PUT"])
    assert response.headers_dict["access-control-max-age"] == "10"

    response = hug.test.options(hug_api, "/v1/demo/1")
    methods = response.headers_dict["access-control-allow-methods"].replace(" ", "")
    allow = response.headers_dict["allow"].replace(" ", "")
    assert set(methods.split(",")) == set(["OPTIONS", "GET", "DELETE", "PUT"])
    assert set(allow.split(",")) == set(["OPTIONS", "GET", "DELETE", "PUT"])
    assert response.headers_dict["access-control-max-age"] == "10"

    response = hug.test.options(hug_api, "/v1/demo/123e4567-midlee89b-12d3-a456-426655440000")
    methods = response.headers_dict["access-control-allow-methods"].replace(" ", "")
    allow = response.headers_dict["allow"].replace(" ", "")
    assert set(methods.split(",")) == set(["OPTIONS", "GET", "DELETE", "PUT"])
    assert set(allow.split(",")) == set(["OPTIONS", "GET", "DELETE", "PUT"])
    assert response.headers_dict["access-control-max-age"] == "10"