import pytest
import yaml
from sachet.server.users import manage
from click.testing import CliRunner
from sachet.server import app, db
from sachet.server.models import Permissions, UserSchema
from bitmask import Bitmask

user_schema = UserSchema()


@pytest.fixture
def client():
    """Flask application with DB already set up and ready."""
    with app.test_client() as client:
        with app.app_context():
            db.drop_all()
            db.create_all()
            db.session.commit()
            yield client
            db.session.remove()
            db.drop_all()


@pytest.fixture
def flask_app_bare():
    """Flask application with empty DB."""
    with app.test_client() as client:
        with app.app_context():
            yield client
            db.drop_all()


@pytest.fixture
def users(client):
    """Creates all the test users.

    Returns a dictionary with all the info for each user.
    """
    userinfo = dict(
        jeff=dict(password="1234", permissions=Bitmask()),
        administrator=dict(password="4321", permissions=Bitmask(Permissions.ADMIN)),
    )

    for user, info in userinfo.items():
        info["username"] = user
        manage.create_user(info["permissions"], info["username"], info["password"])

    return userinfo


@pytest.fixture
def validate_info(users):
    """Given a response, deserialize and validate the information against a given user's info."""

    verify_fields = [
        "username",
        "permissions",
    ]

    def _validate(user, info):
        info = user_schema.load(info)

        for k in verify_fields:
            assert users[user][k] == info[k]

    return _validate


@pytest.fixture
def tokens(client, users):
    """Logs in all test users.

    Returns a dictionary of auth tokens for all test users.
    """

    toks = {}

    for user, creds in users.items():
        resp = client.post(
            "/users/login",
            json={"username": creds["username"], "password": creds["password"]},
        )
        resp_json = resp.get_json()
        token = resp_json.get("auth_token")
        assert token is not None and token != ""
        toks[creds["username"]] = token

    return toks


@pytest.fixture
def cli():
    """click's testing fixture"""
    return CliRunner()