import pytest
from bs4 import BeautifulSoup

import routing
import init
from tests_examples import login_data


@pytest.fixture()
def app():
    """
    Erstellt die App und konfiguriert sie zum Test-Modus
    :yield app:
    """
    app = init.create(testing=True)
    app.config.update({
        "TESTING": True,
    })
    routing.initRoutes(app)
    yield app


@pytest.fixture()
def client(app):
    """
    Liefert einen Test-Client
    :param app:
    :return client:
    """
    return app.test_client(use_cookies=True)


def login(client):
    """
    Hilfsfunktion, die den Client einloggt
    :param client:
    :return Bool (true if successful, false otherwise):
    """
    client.post('/log-in', data=dict(email=login_data.email, password=login_data.password),
                follow_redirects=True)
    cookie = client.get_cookie("cnsc")
    try:
        return len(cookie.value) == 32  # CNSC-Länge: 32 → Wenn der Cookie so lang ist, ist man erfolgreich eingeloggt.
    except AttributeError:
        return False


def test_login(client):
    """
    Testet die Login-Funktion
    :param client:
    """
    loginpage = client.get("/log-in", follow_redirects=True)
    assert b"Einloggen" in loginpage.data
    assert loginpage.status_code == 200
    loginpage_html = BeautifulSoup(loginpage.text, "lxml")
    login_form = loginpage_html.find("form")
    login_action = login_form.get("action")
    login_request = client.post(login_action, data=dict(email=login_data.email, password=login_data.password),
                                follow_redirects=True)
    assert login_request.status_code == 200
    cookie = client.get_cookie("cnsc")
    assert len(cookie.value) == 32  # CNSC-Länge: 32 → Wenn der Cookie so lang ist, ist man erfolgreich eingeloggt.


def test_kurssetup(client):
    """
    Testet die Konfiguration eines Kurses
    :param client:
    """
    if login(client):
        kurspage = client.get("/set-up", follow_redirects=True)
        assert kurspage.status_code == 200
        kurspage_html = BeautifulSoup(kurspage.text, "lxml")
        kursbutton = kurspage_html.find("form", {"id": "manualForm"})
        kursbutton_action = kursbutton.get("action")
        planpage = client.get(kursbutton_action, follow_redirects=True)
        assert planpage.status_code == 200
        planpage_html = BeautifulSoup(planpage.text, "lxml")
        planpage_form = planpage_html.find("form", {"id": "manualForm"})
        planpage_action = planpage_form.get("action")
        set_request = client.post(planpage_action, data=dict(url=login_data.kurs_url), follow_redirects=True)
        assert set_request.status_code == 200
        assert b"Willkommen, " in set_request.data
    else:
        assert False


def test_semestersetup(client):
    """
    Testet die Konfiguration eines Semesters
    :param client:
    """
    if login(client):
        semesterpage = client.get("/set-up/semester", follow_redirects=True)
        assert semesterpage.status_code == 200
        semesterpageHTML = BeautifulSoup(semesterpage.text, "lxml")
        semesterform = semesterpageHTML.find("form")
        semesterformAction = semesterform.get("action")
        semesterformOptions = semesterform.find_all("option")
        nextpage = client.post(semesterformAction, data=dict(sem=semesterformOptions[-1].get("value")),
                               follow_redirects=True)
        assert nextpage.status_code == 200
        assert b"Willkommen, " in nextpage.data
    else:
        assert False


def test_noten(client):
    """
    Testet das Abrufen der Noten aus zwei verschiedenen Semestern
    :param client:
    """
    if login(client):
        notenpage = client.get("/theorie/noten", follow_redirects=True)
        assert notenpage.status_code == 200
        notenpageHTML = BeautifulSoup(notenpage.text, "lxml")
        notenpageHeading = notenpageHTML.find("h1")
        notenpageForm = notenpageHTML.find("form")
        notenpageAction = notenpageForm.get("action")
        notenpageSelection = notenpageForm.find("select")
        notenpageOptions = notenpageSelection.find_all("option")
        notenpageSemester = "Not found!"
        nextpage = "Not found!"
        for i in notenpageOptions:
            if i.get("selected") == "":
                notenpageSemester = i.text[:-1]
            else:
                nextpage = i.get("value")
        assert notenpageSemester.encode("utf-8") in notenpageHeading.encode("utf-8")
        nextpage = client.post(notenpageAction, data=dict(sem=nextpage), follow_redirects=True)
        assert nextpage.status_code == 200
    else:
        assert False


def test_logout(client):
    """
    Testet die Logout-Funktion
    :param client:
    """
    if login(client):
        loginpage = client.get("/log-out", follow_redirects=True)
        assert loginpage.status_code == 200
        assert b"Einloggen" in loginpage.data
        cookie = client.get_cookie("cnsc")
        assert len(cookie.value) != 32  # CNSC-Länge: 32 → CNSC darf ausgeloggt nicht gesetzt sein
    else:
        assert False