extern crate git2;
extern crate prost_build;

use git2::Repository;
use prost_build::compile_protos;
use std::path::Path;

fn update_repo(path: &Path) -> Result<(), git2::Error> {
    let repo = Repository::open(path)?;
    let mut remote = repo.find_remote("origin")?;
    let refspecs: [&str; 0] = [];
    remote.fetch(&refspecs, None, None)
}

fn main() {
    let repo = "https://github.com/meshtastic/protobufs.git";
    let path = Path::new("protobufs");

    if path.exists() {
        if let Err(e) = update_repo(path) {
            eprintln!("Error could not update meshtastic protobuf repo");
            eprintln!("{e}");
            std::process::exit(1);
        }
    } else {
        if let Err(e) = Repository::clone(repo, path) {
            eprintln!("Error could not clone meshtastic protobuf repo");
            eprintln!("{e}");
            std::process::exit(1);
        }
    }

    let protos = &["protobufs/meshtastic/mesh.proto"];
    let includes = &["protobufs"];

    if let Err(e) = compile_protos(protos, includes) {
        eprintln!("Error could not compile protobufs");
        eprintln!("{e}");
        std::process::exit(1);
    }
}