fn main() {

    let output = Command::new("git")

        .args(["rev-parse", "HEAD"])

        .output()

        .expect("Can't get git revision");

    let git_hash = String::from_utf8(output.stdout).expect("Can't parse git revision");

    println!("cargo:rustc-env=GIT_HASH={git_hash}");

    let build_date = chrono::Utc::now().to_rfc3339();

    println!("cargo:rustc-env=BUILD_DATE={build_date}");

    println!("cargo:rerun-if-changed=locales");

    println!("cargo:rerun-if-changed=testdata");

    let buildwasm = |name: &str| {

        let output_path = format!("../target/{name}.wasm");

        let source_path = format!("testdata/{name}.rs");

        let status = Command::new("rustc")

            .args(RUSTC_WASM_ARGS.split_whitespace()) // Split the arguments string by whitespace

            .arg(&source_path)

            .arg("-o")

            .arg(&output_path)

            .status()

            .expect("Failed to build wasmscript");

        assert!(status.success(), "Building wasmscript {name} failed");

    };

    fs::read_dir("testdata")

        .unwrap_or_else(|_| fs::read_dir("").unwrap())

        .flatten()

        .filter_map(|entry| {

            let path = entry.path();

            if path.extension() == Some("rs".as_ref()) {

                path.file_stem()

                    .map(|stem| stem.to_string_lossy().into_owned())

                None

        })

        .for_each(|filename| buildwasm(&filename));

}