# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""timecast/series/unemployment.py"""
import os
from typing import Tuple

import numpy as np

from timecast.series._core import generate_timeline


def generate(path=None) -> Tuple[np.ndarray, np.ndarray]:
    """
    Description: Monthly unemployment rate since 1948.

    References:
        * https://fred.stlouisfed.org/series/UNRATE
    """

    return generate_timeline(
        path
        or os.path.join(os.path.dirname(os.path.abspath(__file__)), "../../data/unemployment.csv"),
        name="UNRATE",
    )
