[Fixes #77] CLI data parameter

README.md

@@ -50,6 +50,13 @@ start a firebase server on port 5555:
 
 	node_modules/.bin/firebase-server -p 5555
 
+To bootstrap the server with some data you can use the `-d,--data` or the `-f,--file` option. 
+_Note: The file option will override the data option._
+
+	node_modules/.bin/firebase-server -d '{"foo": "bar"}'
+
+	node_modules/.bin/firebase-server -f ./path/to/file.json
+
 For more information, run:
 
 	node_modules/.bin/firebase-server -h

bin/firebase-server.js

@@ -2,13 +2,17 @@
 
 'use strict';
 
+var fs = require('fs');
+var path = require('path');
 var cli = require('cli');
 var debug = require('debug');
 
 cli.parse({
 	verbose: ['v', 'Enable verbose (debug) output'],
 	port: ['p', 'Listen on this port', 'number', 5000],
-	name: ['n', 'Hostname of the firebase server', 'string', 'localhost.firebaseio.test']
+	name: ['n', 'Hostname of the firebase server', 'string', 'localhost.firebaseio.test'],
+	data: ['d', 'JSON data to bootstrap the server with', 'string', '{}'],
+	file: ['f', 'JSON file to bootstrap the server with', 'file']
 });
 
 cli.main(function (args, options) {
@@ -18,7 +22,27 @@ cli.main(function (args, options) {
 
 	var FirebaseServer = require('../index.js');
 
-	new FirebaseServer(options.port, options.name, {}); // eslint-disable-line no-new
+	var rawData;
+	if (options.file) {
+		try {
+			rawData = fs.readFileSync(path.resolve(process.cwd(), options.file)); // eslint-disable-line no-sync
+		} catch (e) {
+			this.output(e);
+			this.fatal('Provided file could not be read.');
+		}
+	} else {
+		rawData = options.data;
+	}
+
+	var data = {};
+	try {
+		data = JSON.parse(rawData);
+	} catch (e) {
+		this.output(e);
+		this.fatal('Provided data was not valid JSON.');
+	}
+
+	new FirebaseServer(options.port, options.name, data); // eslint-disable-line no-new
 
 	this.ok('Listening on port ' + options.port);
 });