#!/usr/bin/env node

const decrypt = require('decrypt-dlc');
const fs = require('fs-extra');
const isFile = require('is-file');
const isUrl = require('is-url');
const path = require('path');
const program = require('commander');
const signale = require('signale');


program
  .version('1.0.0')
  .usage('[options] <file|url>')
  .option('-o, --output <file>', 'File to store decrypted urls in. (Default: urls.txt)', path.join(process.cwd(), 'urls.txt'))
	.parse(process.argv);

/**
 * Check if a filepath has an allowed extension. Allowed are `.dlc`, `.ccf` and `.rsdf`.
 * @param {String} filepath The filepath to check
 * @returns {Boolean}
 */
const hasAllowedExtension = (filepath = '') => ['.dlc', '.ccf', '.rsdf'].indexOf(path.extname(filepath)) > -1;
	
const run = async () => {
	const filepath = path.isAbsolute(program.output) ? program.output : path.resolve(process.cwd(), program.output);
	const input = program.args[0];

	let links = [];

	try {
		if (isFile(input) && hasAllowedExtension(input)) links = await decrypt.upload(input);
		else if (isUrl(input)) links = await decrypt.container(input);
		else throw new Error('Positional argument must be a filepath or an url.');
	
		await fs.outputFile(filepath, links.join('\n'));
		signale.success(`Urls stored at ${filepath}`);
	} catch (err) {
		signale.fatal(err);
	}
};

run();