from cryptography.fernet import Fernet

from app import app
from app.models.endpoint import Endpoint
from app.utils.session import generate_key, valid_user_session

JAPAN_PREFS = 'uG7IBICwK7FgMJNpUawp2tKDb1Omuv_euy-cJHVZ' \
  + 'BSydthgwxRFIHxiVA8qUGavKaDXyiM5uNuPIjKbEAW-zB_vzNXWVaafFhW7k2' \
  + 'fO2_mS5e5eK41XXWwiViTz2VVmGWje0UgQwwVPe1A7aH0s10FgARsd2xl5nlg' \
  + 'RLHT2krPUw-iLQ5uHZSnYXFuF4caYemWcj4vqB2ocHkt-aqn04jgnnlWWME_K' \
  + '9ySWdWmPyS66HtLt1tCwc_-xGZklvbHw=='


def test_generate_user_keys():
    key = generate_key()
    assert Fernet(key)
    assert generate_key() != key


def test_valid_session(client):
    assert not valid_user_session({'key': '', 'config': {}})
    with client.session_transaction() as session:
        assert valid_user_session(session)


def test_valid_translation_keys(client):
    valid_lang_keys = [_['value'] for _ in app.config['LANGUAGES']]
    en_keys = app.config['TRANSLATIONS']['lang_en'].keys()
    for translation_key in app.config['TRANSLATIONS']:
        # Ensure the translation is using a valid language value
        assert translation_key in valid_lang_keys

        # Ensure all translations match the same size/content of the original
        # English translation
        assert app.config['TRANSLATIONS'][translation_key].keys() == en_keys


def test_query_decryption(client):
    # FIXME: Handle decryption errors in search.py and rewrite test
    # This previously was used to test swapping decryption keys between
    # queries. While this worked in theory and usually didn't cause problems,
    # they were tied to session IDs and those are really unreliable (meaning
    # that occasionally page navigation would break).
    rv = client.get('/')
    cookie = rv.headers['Set-Cookie']

    rv = client.get(f'/{Endpoint.search}?q=test+1', headers={'Cookie': cookie})
    assert rv._status_code == 200

    with client.session_transaction() as session:
        assert valid_user_session(session)

    rv = client.get(f'/{Endpoint.search}?q=test+2', headers={'Cookie': cookie})
    assert rv._status_code == 200

    with client.session_transaction() as session:
        assert valid_user_session(session)


def test_prefs_url(client):
    base_url = f'/{Endpoint.search}?q=wikipedia'
    rv = client.get(base_url)
    assert rv._status_code == 200
    assert b'wikipedia.org' in rv.data
    assert b'ja.wikipedia.org' not in rv.data

    rv = client.get(f'{base_url}&preferences={JAPAN_PREFS}')
    assert rv._status_code == 200
    assert b'ja.wikipedia.org' in rv.data