fn main() {
    let out_dir = std::env::var("OUT_DIR").unwrap();
    let target_dir = std::path::Path::new(&out_dir)
        .ancestors()
        .nth(3) // Volta 3 níveis de `target/debug/build/inference-server-XYZ/out` para `target/debug/` ou `target/release/`
        .unwrap();

    let vendor_dir = std::path::PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap())
        .parent()
        .unwrap()
        .parent()
        .unwrap()
        .join("vendor")
        .join("llama-bin");

    if vendor_dir.exists() {
        println!(
            "cargo:warning=Copying DLLs from {:?} to {:?}",
            vendor_dir, target_dir
        );

        // Vamos copiar todos os arquivos .dll
        if let Ok(entries) = std::fs::read_dir(&vendor_dir) {
            for entry in entries.flatten() {
                let path = entry.path();
                if path.is_file() && path.extension().and_then(|s| s.to_str()) == Some("dll") {
                    let file_name = path.file_name().unwrap();
                    let dest = target_dir.join(file_name);
                    let _ = std::fs::copy(&path, &dest);
                }
            }
        }
    }

    // Rebuildar apenas se houver mudanças nessa build file ou nos bins da vendor
    println!("cargo:rerun-if-changed=build.rs");
    println!("cargo:rerun-if-changed=../../vendor/llama-bin");
}