"use strict";

const fs = require("fs");
const assert = require("assert");

const transpile = require("./src/transpile");
const measureTime = require("./src/astformer/util/measure-time");

assert(process.argv[2] != null);

const nixFilePath = process.argv[2];
const nixFile = fs.readFileSync(nixFilePath, "utf8");

let transpiled = transpile(nixFile);

const api = {
	builtins: {},
	$$jsNix$memoize: function (func) {
		let isCalled = false;
		let storedResult;

		return function (arg) {
			if (isCalled === false) {
				storedResult = func(arg);
				isCalled = true;
			}

			return storedResult;
		};
	}
};

// TODO: Switch to Node `vm` API instead, and check whether there's a polyfill for it for non-Node environments, build a custom one if not
const context = { module: {}, exports: {} };
context.module.exports = exports;

new Function("module", transpiled)(context.module);

console.log("-- EVALUATION RESULT:");

// Warm-up for hot VM performance testing
// for (let i = 0; i < 10000; i++) {
// 	context.module.exports(api);
// }

console.log(measureTime(() => context.module.exports(api)));