"""A util script used on daryl's laptop to switch 'iemdb' /etc/hosts entry."""

import os
import pathlib
import tempfile

import click

DB1, DB2, DB3, DB4 = range(4)
IPS = "172.16.170.1 172.16.172.1 172.16.174.1 172.16.176.1".split()
LOOKUP = {
    "": IPS[DB1],
    "-afos": IPS[DB1],
    "-asos": IPS[DB3],
    "-asos1min": IPS[DB1],
    "-awos": IPS[DB3],
    "-coop": IPS[DB2],
    "-dep": IPS[DB3],
    "-dep_china": IPS[DB1],
    "-dep_europe": IPS[DB1],
    "-dep_sa": IPS[DB1],
    "-frost": IPS[DB1],
    "-hads": IPS[DB2],
    "-hml": IPS[DB3],
    "-id3b": IPS[DB1],
    "-iem": IPS[DB3],
    "-iembot": IPS[DB4],
    "-iemre": IPS[DB2],
    "-iemre_china": IPS[DB2],
    "-iemre_europe": IPS[DB2],
    "-iemre_sa": IPS[DB2],
    "-isuag": IPS[DB1],
    "-kcci": IPS[DB1],
    "-mesonet": IPS[DB1],
    "-mesosite": IPS[DB2],
    "-mos": IPS[DB1],
    "-nc1018": IPS[DB1],
    "-nldn": IPS[DB2],
    "-nwx": IPS[DB1],
    "-openfire": IPS[DB3],
    "-other": IPS[DB1],
    "-portfolio": IPS[DB1],
    "-postgis": IPS[DB2],
    "-radar": IPS[DB2],
    "-raob": IPS[DB2],
    "-rtstats": IPS[DB1],
    "-rwis": IPS[DB1],
    "-scan": IPS[DB1],
    "-smos": IPS[DB2],
    "-snet": IPS[DB3],
    "-squaw": IPS[DB1],
    "-sustainablecorn": IPS[DB1],
    "-talltowers": IPS[DB4],
    "-td": IPS[DB1],
    "-uscrn": IPS[DB1],
    "-wepp": IPS[DB1],
}


@click.command()
@click.argument(
    "host", required=True, type=click.Choice(["local", "proxy", "test"])
)
def main(host):
    """Go Main Go"""
    data = pathlib.Path("/etc/hosts").read_text(encoding="utf-8")
    result = []
    for line in data.split("\n"):
        result.append(line)
        if line.startswith("# ---AUTOGEN---"):
            print("Found ---AUTOGEN---")
            break
    for dbname, lkp in LOOKUP.items():
        ip = lkp if host == "proxy" else "127.0.0.1"
        if host == "test":
            ip = "172.16.171.1"  # docker iem_database container
        result.append(f"{ip} iemdb{dbname}.local")
    print(f"added {len(LOOKUP)} entries")
    (tmpfd, tmpfn) = tempfile.mkstemp()
    os.write(tmpfd, ("\n".join(result)).encode("ascii"))
    os.write(tmpfd, b"\n")
    os.close(tmpfd)
    os.rename(tmpfn, "/etc/hosts")
    os.chmod("/etc/hosts", 0o644)

    if host == "test":
        print(
            "docker run -d -p 172.16.171.1:5432:5432 "
            "ghcr.io/akrherz/iem_database:test_data"
        )


if __name__ == "__main__":
    main()
