trade-opskins-manager/lib/FileStorage.js

Trade Opskins Manager for Node.js (ExpressTrade manager)

/**
 * Modules
 * */
const fs = require('fs');
const path = require('path');


/**
 * Creates a new FileStorage object
 * @param {string} directory - The local directory where files will be saved if events aren't listened to. No trailing slash. No nesting.
 * @constructor
 */
function FileStorage (directory) {
  this.directory = directory;
}


/**
 * Saves a file
 * @param {string} filename - The name of the file
 * @param {*} contents - The contents of the file
 * @return {undefined}
 */
FileStorage.prototype.save = function (filename, contents) {
	contents = new Buffer(JSON.stringify(contents), 'utf8');

	const dir = path.join(this.directory, filename);

	checkDirExists(this.directory);

	return fs.writeFileSync(dir, contents);
};


/**
 * Reads the contents of a single file
 * @param {string} filename - The name of the file to read
 * @return {Object|null}
 */
FileStorage.prototype.read = function (filename) {
	const dir = path.join(this.directory, filename);

	if(fs.existsSync(dir)){
		const data = fs.readFileSync(dir);

		try{
			return JSON.parse(data);
		} catch (e) {
			return null;
		}
	}else{
		return null;
	}
};


function checkDirExists (dir) {
	if(!dir) {
		return;
	}

	let pathDir = '';
	dir.replace(/\\/g, '/').split('/').forEach(function (dir, index) {
		if(index === 0 && !dir) {
			pathDir = '/';
		} else {
			pathDir += (pathDir ? '/' : '') + dir;
		}

		if(!fs.existsSync(pathDir)) {
			fs.mkdirSync(pathDir, 0o750);
		}
	});
}


module.exports = FileStorage;