from typing import Optional
from pyinfra import host
from pyinfra.api import deploy
from pyinfra.operations import dnf, systemd, server
from pyinfra.facts.server import LinuxName, LinuxDistribution


@deploy("Install PostgreSQL")
def install():
    linux_name = host.get_fact(LinuxName)
    version = host.data.postgresql_version

    if linux_name == "Fedora":
        fedora_release = host.get_fact(LinuxDistribution)["major"]
        dnf.rpm(
            f"https://download.postgresql.org/pub/repos/yum/reporpms/F-{fedora_release}-x86_64/pgdg-fedora-repo-latest.noarch.rpm"
        )

        result = dnf.packages(
            name=f"Install psql {version} packages",
            packages=[
                f"postgresql{version}",
                f"postgresql{version}-server",
                f"postgresql{version}-contrib",
            ],
        )

        if result.changed:
            server.shell(
                name="initialize pgsql db",
                commands=[
                    f"/usr/pgsql-{version}/bin/postgresql-{version}-setup initdb"
                ],
            )

        systemd.service(
            name="install psql {version} unit",
            service=f"postgresql-{version}",
            running=True,
            enabled=True,
            daemon_reload=True,
        )