extern crate parity_wasm;
extern crate pwasm_utils as utils;
use pwasm_utils::logger;
extern crate clap;

use clap::{App, Arg};

fn main() {
	logger::init();

	let target_runtime = utils::TargetRuntime::pwasm();

	let matches = App::new("wasm-pack")
		.arg(Arg::with_name("input")
			.index(1)
			.required(true)
			.help("Input WASM file"))
		.arg(Arg::with_name("output")
			.index(2)
			.required(true)
			.help("Output WASM file"))
		.get_matches();

	let input = matches.value_of("input").expect("is required; qed");
	let output = matches.value_of("output").expect("is required; qed");

	let module = parity_wasm::deserialize_file(&input).expect("Input module deserialization failed");
	let ctor_module = module.clone();
	let raw_module = parity_wasm::serialize(module).expect("Serialization failed");

	// Invoke packer
	let mut result_module = utils::pack_instance(raw_module, ctor_module, &utils::TargetRuntime::pwasm()).expect("Packing failed");
	// Optimize constructor, since it does not need everything
	utils::optimize(&mut result_module, vec![target_runtime.symbols().call]).expect("Optimization failed");

	parity_wasm::serialize_to_file(&output, result_module).expect("Serialization failed");
}
