'use strict';

const Promise = require("bluebird");
const fs = Promise.promisifyAll(require("fs"));
const path = require("path");
const util = require("util");

const parse = require("./lib");

let completed = 0;

Promise.try(() => {
	return fs.readdirAsync("/nix/store")
}).filter((storePath) => {
	return /.+\.drv$/.test(storePath);
}).map((storePath, i, total) => {
	return Promise.try(() => {
		return fs.readFileAsync(path.join("/nix/store", storePath));
	}).then((contents) => {
		parse(contents.toString());
	}).catch((err) => {
		console.error(path.join("/nix/store", storePath));
		console.error(util.inspect(err, {colors: true}));
		throw err;
	}).then(() => {
		completed += 1;
		console.log(`Completed ${completed}/${total} derivations...`);
	});
}, {concurrency: 1}).catch((err) => {
	// do nothing
});