use std::process::Command;
use chrono::Local;

fn main() {
    let now = Local::now();
    let build_date = now.format("%Y.%m.%d").to_string();
    println!("cargo:rustc-env=BUILD_DATE={}", build_date);

    if let Ok(output) = Command::new("git").args(&["rev-parse", "--short", "HEAD"]).output() {
        if let Ok(hash) = String::from_utf8(output.stdout) {
            println!("cargo:rustc-env=GIT_HASH={}", hash.trim());
        }
    }
    println!("cargo:rerun-if-changed=../.git/HEAD");
    println!("cargo:rerun-if-changed=../.git/index");
}