"""Fetch EUR/USD M1 bars from histdata.com (free, research use).

Polite: one request per year, spaced; past years query month=None. Uses the
maintained `histdata` package which handles histdata's anti-hotlink tk token.
Output: data/raw/DAT_ASCII_EURUSD_M1_<year>.zip

    YEARS=2019,2020,2021 python scripts/fetch_data.py
"""
import os
import time

from histdata import download_hist_data
from histdata.api import Platform as P, TimeFrame as T

YEARS = [y.strip() for y in os.environ.get("YEARS", "2019,2020,2021").split(",")]


def main():
    os.makedirs("data/raw", exist_ok=True)
    for yr in YEARS:
        f = download_hist_data(
            year=yr, month=None, pair="eurusd",
            platform=P.GENERIC_ASCII, time_frame=T.ONE_MINUTE,
            output_directory="data/raw",
        )
        print("fetched", yr, "->", f)
        time.sleep(2)  # be a good citizen


if __name__ == "__main__":
    main()