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//http server
var fs = require('fs');
var httpServer = require('http');
var path = require('path');
var connect = require('connect');
//mongo server
var mongoose = require('mongoose/');
var restify = require('restify');
var config = require('./config');
// localhost
var httpPort = process.env.PORT || 8080;
var mongodbPort = 8888;
/*
see README.md for a more detailed write up
*/
//////////////////////////////////////////////////////// HTTP - sends html/js/css to the browswer
var sendHTML = function( filePath, contentType, response ){
console.log('sendHTML: ' + filePath) ;
path.exists(filePath, function( exists ) {
if (exists) {
fs.readFile(filePath, function(error, content) {
if (error) {
response.writeHead(500);
response.end();
}
else {
response.writeHead(200, { 'Content-Type': contentType });
response.end(content, 'utf-8');
}
});
}
else {
response.writeHead(404);
response.end();
}
});
}
var getFilePath = function(url) {
var filePath = './public' + url;
if (url == '/' ) filePath = './public/index.html';
console.log("url: " + url)
return filePath;
}
var getContentType = function(filePath) {
var extname = path.extname(filePath);
var contentType = 'text/html';
switch (extname) {
case '.js':
contentType = 'text/javascript';
break;
case '.css':
contentType = 'text/css';
break;
}
return contentType;
}
var onHtmlRequestHandler = function(request, response) {
console.log('onHtmlRequestHandler... request.url: ' + request.url) ;
/*
when this is live, nodjitsu only listens on 1 port(80) so the httpServer will hear it first but
we need to pass the request to the mongodbServer
*/
if ( process.env.PORT && url === '/messages') {
// pass the request to mongodbServer
return;
}
var filePath = getFilePath(request.url);
var contentType = getContentType(filePath);
console.log('onHtmlRequestHandler... getting: ' + filePath) ;
sendHTML(filePath, contentType, response);
}
httpServer.createServer(onHtmlRequestHandler).listen(httpPort);
////////////////////////////////////////////////////// MONGODB - saves data in the database and posts data to the browser
var mongoURI = ( process.env.PORT ) ? config.creds.mongoose_auth_jitsu : config.creds.mongoose_auth_local;
db = mongoose.connect(mongoURI),
Schema = mongoose.Schema;
var mongodbServer = restify.createServer({
formatters: {
'application/json': function(req, res, body){
if(req.params.callback){
var callbackFunctionName = req.params.callback.replace(/[^A-Za-z0-9_\.]/g, '');
return callbackFunctionName + "(" + JSON.stringify(body) + ");";
} else {
return JSON.stringify(body);
}
},
'text/html': function(req, res, body){
return body;
}
}
});
mongodbServer.use(restify.bodyParser());
// Create a schema for our data
var MessageSchema = new Schema({
message: String,
date: Date
});
// Use the schema to register a model
mongoose.model('Message', MessageSchema);
var Message = mongoose.model('Message');
// This function is responsible for returning all entries for the Message model
var getMessages = function(req, res, next) {
// Resitify currently has a bug which doesn't allow you to set default headers
// This headers comply with CORS and allow us to mongodbServer our response to any origin
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
console.log("mongodbServer getMessages");
Message.find().limit(20).sort('date', -1).execFind(function (arr,data) {
res.send(data);
});
}
var postMessage = function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
// Create a new message model, fill it up and save it to Mongodb
var message = new Message();
console.log("mongodbServer postMessage: " + req.params.message);
message.message = req.params.message;
message.date = new Date()
message.save(function () {
res.send(req.body);
});
}
mongodbServer.listen(mongodbPort, function() {
var consoleMessage = '\n A Simple MongoDb, Mongoose, Restify, and Backbone Tutorial'
consoleMessage += '\n +++++++++++++++++++++++++++++++++++++++++++++++++++++'
consoleMessage += '\n\n %s says your mongodbServer is listening at %s';
consoleMessage += '\n great! now open your browser to http://localhost:3501';
consoleMessage += '\n where you will connect to your httpServer that will';
consoleMessage += '\n talk to your mongodbServer to get and post your messages. \n\n';
consoleMessage += '+++++++++++++++++++++++++++++++++++++++++++++++++++++ \n\n'
console.log(consoleMessage, mongodbServer.name, mongodbServer.url);
});
mongodbServer.get('/messages', getMessages);
mongodbServer.post('/messages', postMessage);
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