deployd/lib/client/repl.js

var Server = require('../server')
	, os = require('os')
	, exec = require('child_process').exec
	, sh = require('shelljs')
	, internalClient = require('../internal-client')
	, _open = require('../util/open')
	, Keys = require('../keys')
	, keys = new Keys();

var server;

module.exports = function (dpd) {
	console.log('type help for a list of commands');
	var repl = require("repl")
	,	context = repl.start("dpd > ", null, replEval, true, true).context;
	server = dpd;

	context.dpd = buildReplClient(dpd);

	return commands;
};

function replEval(src, ctx, name, fn) {
	/*jshint evil:true*/
	var result;

	// first try to match a command
	// trim '(',')', and '\n'
	if(tryCommand(src.replace(/\(|\)|\n/g, ''))) {
		fn();
	} else {
		try {
			result = eval(src);
		} catch(e) {}
		fn(null, result);
	}
}


var commands = {
	help: function () {
		function pad(key) {
			var len = 0, padding = '';
			Object.keys(help).forEach(function (key) {
				if(key.length > len) len = key.length;
			});
			len -= key.length;
			len += 10;
			while(padding.length < len) {padding += ' '}
			return padding;
		}

		Object.keys(help).forEach(function (key) {
			console.log('\t' + key + pad(key) + help[key]);
		});
	},

	resources: function () {
		server.resources && server.resources.forEach(function (r) {
			if(r.settings.type) console.log('\t' + r.settings.path, '(' + r.settings.type + ')');
		});
	},

	dashboard: function () {
		open('/dashboard/');
	},

	open: function () {
		open();
	}
};

function open(url) {	
	url = url || '';
	_open('http://localhost:' + server.options.port + url);
}

var help = {
	dashboard: 'open the resource editor in a browser',
	dpd:       'the server object',
	resources: 'list your resources'
};

function tryCommand(cmd) {
	console.info(cmd);
	if(commands[cmd]) {
		return commands[cmd]() || true;
	}
}

function buildReplClient(dpd) {
	var client = internalClient.build(dpd, {isRoot: true});

	Object.keys(client).forEach(function (key) {
		Object.keys(client[key]).forEach(function(k) {
			var orig = client[key][k];
			client[key][k] = function () {
				var args = Array.protoype.slice.call(arguments);
				if(typeof args[args.length - 1] !== 'function') {
						args[args.length] = function(res, err) {
						if(err) {
							console.log('Error', err);
						} else {
							console.log(res);
						}
					};
					args.length++;
				}
				orig.apply(client[key], args);
			};
		});
	});

	return client;
}