"use strict";

var Minimist = require('minimist');
var Class = require('class.extend');

var Input = Class.extend('Input', {
    /**
     * Constructor.
     *
     * @param object process
     */
    init: function(process) {
        this.args = Minimist(process.argv.slice(2));
        this.node = process.argv[0];
        this.script = process.argv[1];
    },

    /**
     * Return the value of the given name argument.
     *
     * @param string name
     * @param mixed default
     *
     * @return mixed
     */
    get: function(name, defaultValue) {
        if (this.has(name)) {
            return this.args[name];
        }

        if (defaultValue !== undefined) {
            return defaultValue;
        }

        return null;
    },

    /**
     * Check the given argument name exists.
     *
     * @param string name
     *
     * @return boolean
     */
    has: function(name) {
        return this.args.hasOwnProperty(name);
    },

    /**
     * Return if args is empty.
     *
     * @return boolean
     */
    empty: function() {
        return Object.keys(this.args).length === 1;
    },
});

module.exports = Input;