Add Base protobuf generation for types.

Author: G8XSU

rust/api/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "api"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+prost = { version = "0.11.6", default-features = false, features = ["std", "prost-derive"] }
+bytes = "1.4.0"
+
+[target.'cfg(genproto)'.build-dependencies]
+prost-build = { version = "0.11.3" }
+reqwest =  { version = "0.11.13", default-features = false, features = ["rustls-tls", "blocking"] }

rust/api/build.rs

@@ -0,0 +1,35 @@
+#[cfg(genproto)]
+extern crate prost_build;
+#[cfg(genproto)]
+use std::{env, fs, fs::File, path::Path};
+
+/// To generate updated proto objects, run `RUSTFLAGS="--cfg genproto" cargo build`
+fn main() {
+	#[cfg(genproto)]
+	generate_protos();
+}
+
+#[cfg(genproto)]
+fn generate_protos() {
+	download_file(
+		"https://raw.githubusercontent.com/lightningdevkit/vss-server/7f492fcac0c561b212f49ca40f7d16075822440f/app/src/main/proto/vss.proto",
+		"src/proto/vss.proto",
+	).unwrap();
+
+	prost_build::Config::new()
+		.bytes(&["."])
+		.compile_protos(&["src/proto/vss.proto"], &["src/"])
+		.expect("protobuf compilation failed");
+	println!("OUT_DIR: {}", &env::var("OUT_DIR").unwrap());
+	let from_path = Path::new(&env::var("OUT_DIR").unwrap()).join("vss.rs");
+	fs::copy(from_path, "src/types.rs").unwrap();
+}
+
+#[cfg(genproto)]
+fn download_file(url: &str, save_to: &str) -> Result<(), Box<dyn std::error::Error>> {
+	let mut response = reqwest::blocking::get(url)?;
+	fs::create_dir_all(Path::new(save_to).parent().unwrap())?;
+	let mut out_file = File::create(save_to)?;
+	response.copy_to(&mut out_file)?;
+	Ok(())
+}

rust/api/src/lib.rs

@@ -0,0 +1 @@
+pub mod types;