fn main() {
    println!("cargo:rerun-if-changed=proto/runner/v1/messages.proto");
    println!("cargo:rerun-if-changed=proto/runner/v1/services.proto");

    // Include system protobuf path for google/protobuf well-known types
    // (e.g. /usr/include from protobuf-compiler in container builds).
    let mut include_dirs = vec!["proto".to_string()];
    for candidate in ["/usr/include", "/usr/local/include"] {
        let p = std::path::Path::new(candidate).join("google/protobuf/timestamp.proto");
        if p.exists() {
            include_dirs.push(candidate.to_string());
            break;
        }
    }

    let include_refs: Vec<&str> = include_dirs.iter().map(|s| s.as_str()).collect();

    tonic_prost_build::configure()
        .build_server(false)
        .build_client(false) // We implement connect-rpc transport manually
        .compile_protos(
            &[
                "proto/runner/v1/messages.proto",
                "proto/runner/v1/services.proto",
            ],
            &include_refs,
        )
        .expect("failed to compile Forgejo actions proto");
}