"""Generate jail.conf.d entries."""

from __future__ import annotations

from .config import JailConfig, MainConfig
def render_jail_conf(
    main: MainConfig,
    jail: JailConfig,
    *,
    jailname: str | None = None,
    root: str | None = None,
) -> str:
    """Render jail.conf content for the jail."""
    name = jailname or jail.name
    if not root:
        raise ValueError("root path is required to render jail.conf")
    lines = [
        f"{name} {{",
        f"  host.hostname = \"{name}\";",
        f"  path = \"{root}\";",
        "  mount.devfs;",
        "  exec.clean;",
        "  exec.start = \"/bin/sh /etc/rc\";",
        "  exec.stop = \"/bin/sh /etc/rc.shutdown jail\";",
        "}",
    ]

    base = "\n".join(lines)
    if jail.extra_jail_conf:
        base += "\n" + jail.extra_jail_conf.rstrip() + "\n"
    return base