from datetime import datetime, timedelta

import pytest
from sqlalchemy.exc import IntegrityError
from sqlalchemy.orm.exc import NoResultFound

from app.dao.api_key_dao import (
    save_model_api_key,
    get_model_api_keys,
    get_unsigned_secrets,
    get_unsigned_secret,
    expire_api_key
)
from app.models import ApiKey, KEY_TYPE_NORMAL


def test_save_api_key_should_create_new_api_key_and_history(sample_service):
    api_key = ApiKey(**{'service': sample_service,
                        'name': sample_service.name,
                        'created_by': sample_service.created_by,
                        'key_type': KEY_TYPE_NORMAL})
    save_model_api_key(api_key)

    all_api_keys = get_model_api_keys(service_id=sample_service.id)
    assert len(all_api_keys) == 1
    assert all_api_keys[0] == api_key
    assert api_key.version == 1

    all_history = api_key.get_history_model().query.all()
    assert len(all_history) == 1
    assert all_history[0].id == api_key.id
    assert all_history[0].version == api_key.version


def test_expire_api_key_should_update_the_api_key_and_create_history_record(notify_api,
                                                                            sample_api_key):
    expire_api_key(service_id=sample_api_key.service_id, api_key_id=sample_api_key.id)
    all_api_keys = get_model_api_keys(service_id=sample_api_key.service_id)
    assert len(all_api_keys) == 1
    assert all_api_keys[0].expiry_date <= datetime.utcnow()
    assert all_api_keys[0].secret == sample_api_key.secret
    assert all_api_keys[0].id == sample_api_key.id
    assert all_api_keys[0].service_id == sample_api_key.service_id

    all_history = sample_api_key.get_history_model().query.all()
    assert len(all_history) == 2
    assert all_history[0].id == sample_api_key.id
    assert all_history[1].id == sample_api_key.id
    sorted_all_history = sorted(all_history, key=lambda hist: hist.version)
    sorted_all_history[0].version = 1
    sorted_all_history[1].version = 2


def test_get_api_key_should_raise_exception_when_api_key_does_not_exist(sample_service, fake_uuid):
    with pytest.raises(NoResultFound):
        get_model_api_keys(sample_service.id, id=fake_uuid)


def test_should_return_api_key_for_service(notify_api, notify_db, notify_db_session, sample_api_key):
    api_key = get_model_api_keys(service_id=sample_api_key.service_id, id=sample_api_key.id)
    assert api_key == sample_api_key


def test_should_return_unsigned_api_keys_for_service_id(sample_api_key):
    unsigned_api_key = get_unsigned_secrets(sample_api_key.service_id)
    assert len(unsigned_api_key) == 1
    assert sample_api_key._secret != unsigned_api_key[0]
    assert unsigned_api_key[0] == sample_api_key.secret


def test_get_unsigned_secret_returns_key(sample_api_key):
    unsigned_api_key = get_unsigned_secret(sample_api_key.id)
    assert sample_api_key._secret != unsigned_api_key
    assert unsigned_api_key == sample_api_key.secret


def test_should_not_allow_duplicate_key_names_per_service(sample_api_key, fake_uuid):
    api_key = ApiKey(**{'id': fake_uuid,
                        'service': sample_api_key.service,
                        'name': sample_api_key.name,
                        'created_by': sample_api_key.created_by,
                        'key_type': KEY_TYPE_NORMAL})
    with pytest.raises(IntegrityError):
        save_model_api_key(api_key)


def test_save_api_key_can_create_key_with_same_name_if_other_is_expired(sample_service):
    expired_api_key = ApiKey(**{'service': sample_service,
                                'name': "normal api key",
                                'created_by': sample_service.created_by,
                                'key_type': KEY_TYPE_NORMAL,
                                'expiry_date': datetime.utcnow()})
    save_model_api_key(expired_api_key)
    api_key = ApiKey(**{'service': sample_service,
                        'name': "normal api key",
                        'created_by': sample_service.created_by,
                        'key_type': KEY_TYPE_NORMAL})
    save_model_api_key(api_key)
    keys = ApiKey.query.all()
    assert len(keys) == 2


def test_save_api_key_should_not_create_new_service_history(sample_service):
    from app.models import Service

    assert Service.query.count() == 1
    assert Service.get_history_model().query.count() == 1

    api_key = ApiKey(**{'service': sample_service,
                        'name': sample_service.name,
                        'created_by': sample_service.created_by,
                        'key_type': KEY_TYPE_NORMAL})
    save_model_api_key(api_key)

    assert Service.get_history_model().query.count() == 1


@pytest.mark.parametrize('days_old, expected_length', [(5, 1), (8, 0)])
def test_should_not_return_revoked_api_keys_older_than_7_days(
        sample_service,
        days_old,
        expected_length
):
    expired_api_key = ApiKey(**{'service': sample_service,
                                'name': sample_service.name,
                                'created_by': sample_service.created_by,
                                'key_type': KEY_TYPE_NORMAL,
                                'expiry_date': datetime.utcnow() - timedelta(days=days_old)})
    save_model_api_key(expired_api_key)

    all_api_keys = get_model_api_keys(service_id=sample_service.id)

    assert len(all_api_keys) == expected_length