'use strict';
const {promisify} = require('util');
const fs = require('fs');

async function isType(fsStatType, statsMethodName, filePath) {
    if (typeof filePath !== 'string') {
        throw new TypeError(`Expected a string, got ${typeof filePath}`);
    }

    try {
        const stats = await promisify(fs[fsStatType])(filePath);
        return stats[statsMethodName]();
    } catch (error) {
        if (error.code === 'ENOENT') {
            return false;
        }

        throw error;
    }
}

function isTypeSync(fsStatType, statsMethodName, filePath) {
    if (typeof filePath !== 'string') {
        throw new TypeError(`Expected a string, got ${typeof filePath}`);
    }

    try {
        return fs[fsStatType](filePath)[statsMethodName]();
    } catch (error) {
        if (error.code === 'ENOENT') {
            return false;
        }

        throw error;
    }
}

exports.isFile = isType.bind(null, 'stat', 'isFile');
exports.isDirectory = isType.bind(null, 'stat', 'isDirectory');
exports.isSymlink = isType.bind(null, 'lstat', 'isSymbolicLink');
exports.isFileSync = isTypeSync.bind(null, 'statSync', 'isFile');
exports.isDirectorySync = isTypeSync.bind(null, 'statSync', 'isDirectory');
exports.isSymlinkSync = isTypeSync.bind(null, 'lstatSync', 'isSymbolicLink');