//! Move the world's extension branch to its last successful commit.
fn run() -> std::io::Result<i32> {
    let good = std::fs::read_to_string("/src/sausage/.git/sausage-last-good")?;
    if good.trim().is_empty() {
        return Err(std::io::Error::other("No successful extension commit"));
    }
    sausage_spawn::Command::new("git")
        .args([
            "-C",
            "/src/sausage",
            "update-ref",
            "refs/heads/main",
            good.trim(),
        ])
        .status()
}
fn main() {
    std::process::exit(match run() {
        Ok(code) => code,
        Err(error) => {
            eprintln!("extensions-revert: {error}");
            1
        }
    });
}