use chrono::Utc;
use std::process::Command;

fn main() {
    // Set the build date
    let build_date = Utc::now().format("%Y-%m-%d %H:%M:%S UTC").to_string();
    println!("cargo:rustc-env=BUILD_DATE={}", build_date);

    // Get the git hash if possible
    let git_hash = Command::new("git")
        .args(["rev-parse", "--short", "HEAD"])
        .output()
        .ok()
        .and_then(|output| String::from_utf8(output.stdout).ok())
        .unwrap_or_else(|| "unknown".to_string());
    println!("cargo:rustc-env=GIT_HASH={}", git_hash.trim());

    // Tell cargo to rerun this if any git changes occur
    println!("cargo:rerun-if-changed=.git/HEAD");
    println!("cargo:rerun-if-changed=.git/refs/heads/main");
}