use std::env;
use std::process::Command;

fn main() {
    println!("cargo:rerun-if-changed=migrations");
    println!("cargo:rerun-if-changed=.git");

    if env::var("GIT_REV").is_err() {
        let git_rev: String = Command::new("git")
            .args(["rev-parse", "HEAD"])
            .output()
            .expect("Failed to run git rev-parse")
            .stdout
            .try_into()
            .expect("Failed to parse output from git");

        println!("cargo:rustc-env=GIT_REV={git_rev}");
    }
}