use std::process::Command;

fn main() {
    // Get the current Git commit hash
    let output = Command::new("git").args(["rev-parse", "HEAD"]).output();

    let git_hash = match output {
        Ok(output) => {
            if output.status.success() {
                String::from_utf8_lossy(&output.stdout).trim().to_string()
            } else {
                "unknown".to_string()
            }
        }
        Err(_) => "unknown".to_string(),
    };

    // Get the short hash (first 7 characters)
    let short_hash = if git_hash != "unknown" && git_hash.len() >= 7 {
        git_hash[..7].to_string()
    } else {
        git_hash.clone()
    };

    // Set the environment variables that will be available at compile time
    println!("cargo:rustc-env=GIT_COMMIT_HASH={}", git_hash);
    println!("cargo:rustc-env=GIT_COMMIT_SHORT={}", short_hash);

    // Rebuild if the Git commit changes
    println!("cargo:rerun-if-changed=.git/HEAD");
    println!("cargo:rerun-if-changed=.git/refs/heads");
}