fn main() {
    // Compile protobuf definitions
    prost_build::compile_protos(&["proto/agent.proto"], &["proto/"]).unwrap();

    // Compile C helper for SNMP
    cc::Build::new()
        .file("native/snmp_helper.c")
        .include("native")
        .compile("snmp_helper");

    // Link against netsnmp library
    println!("cargo:rustc-link-lib=netsnmp");

    // Inject compile timestamp as version
    // This allows tracking when a specific agent binary was built
    let version = get_version();
    println!("cargo:rustc-env=BUILD_VERSION={}", version);
}

fn get_version() -> String {
    // Generate RFC 3339 timestamp at compile time
    // Format: YYYY-MM-DDTHH:MM:SSZ
    let now = chrono::Utc::now();
    now.format("%Y-%m-%dT%H:%M:%SZ").to_string()
}