use std::ffi::{OsStr, OsString};

pub const PRIVATE_SANDBOX_INIT_ROLE: &str = "--lazaret-private-sandbox-init-v1";

#[must_use]
pub fn is_private_sandbox_init_role(arguments: &[OsString]) -> bool {
    arguments.len() == 1 && arguments[0] == OsStr::new(PRIVATE_SANDBOX_INIT_ROLE)
}

#[must_use]
pub fn dispatch_private_sandbox_init(arguments: &[OsString]) -> bool {
    if !is_private_sandbox_init_role(arguments) {
        return false;
    }
    loop {
        std::thread::park();
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn private_role_dispatch_is_exact_and_closed() {
        assert!(is_private_sandbox_init_role(&[OsString::from(
            PRIVATE_SANDBOX_INIT_ROLE
        )]));
        assert!(!is_private_sandbox_init_role(&[]));
        assert!(!is_private_sandbox_init_role(&[
            OsString::from(PRIVATE_SANDBOX_INIT_ROLE),
            OsString::from("extra"),
        ]));
        assert!(!is_private_sandbox_init_role(&[OsString::from(
            "--private-sandbox-init"
        )]));
    }
}