use std::{env, fs, path::PathBuf};

use protox::Compiler;
use protox::prost::Message;

fn main() -> Result<(), std::io::Error> {
    let proto_paths = [
        "proto/history.proto",
        "proto/control.proto",
    ];
    let proto_include_dirs = ["proto"];

    let file_descriptor_set = Compiler::new(proto_include_dirs)
        .map_err(std::io::Error::other)?
        .include_source_info(true)
        .include_imports(true)
        .open_files(proto_paths)
        .map_err(std::io::Error::other)?
        .file_descriptor_set();

    let file_descriptor_path = PathBuf::from(env::var_os("OUT_DIR").expect("OUT_DIR not set"))
        .join("file_descriptor_set.bin");
    fs::write(&file_descriptor_path, file_descriptor_set.encode_to_vec()).unwrap();

    tonic_prost_build::configure()
        .build_server(true)
        .file_descriptor_set_path(&file_descriptor_path)
        .skip_protoc_run()
        .compile_protos(&proto_paths, &proto_include_dirs)?;

    Ok(())
}