tema2 actualizado y ejercicios

ejercicios/code.js

@@ -0,0 +1,7 @@
+var Reloj = require("./reloj").Reloj;
+var reloj = new Reloj();
+
+reloj.on("segundo", function(fecha) {
+  console.log("Un segundo! son las:", fecha);
+  reloj.removeAllListeners("segundo");
+});

ejercicios/cp.js

@@ -0,0 +1,18 @@
+var fs = require("fs");
+
+var origen = process.argv[2],
+    dest = process.argv[3];
+
+var readStream = fs.createReadStream(origen, { flags: "r", autoClose: true});
+var writeStream = fs.createWriteStream(dest, { flags: "w"});
+
+// readStream.on("data", writeStream.write.bind(writeStream));
+// readStream.on("end", writeStream.end.bind(writeStream));
+
+readStream.on("data", function(chunk) {
+  writeStream.write(chunk);
+});
+
+readStream.on("end", function() {
+  writeStream.end();
+});

ejercicios/cuentalineas.js

@@ -0,0 +1,15 @@
+var fs = require("fs");
+
+var readStream = fs.createReadStream(process.argv[2],
+                                     { flags: "r",
+                                       autoClose: true });
+
+var contenido = "";
+
+readStream.on("data", function(chunk) {
+  contenido += chunk;
+});
+
+readStream.on("end", function() {
+  console.log(contenido.split("\n").length - 1);
+});

ejercicios/events.js

@@ -0,0 +1,16 @@
+var EventEmitter = require("events").EventEmitter,
+    inherits = require("util").inherits;
+
+function Tambor() {
+  var self = this;
+  setInterval(function() {
+    self.emit("pom!");
+  }, 1000);
+};
+inherits(Tambor, EventEmitter);
+
+var tambor1 = new Tambor();
+
+tambor1.on("pom!", function() {
+  console.log("El tambor suena!");
+});

ejercicios/hola.js

@@ -0,0 +1,14 @@
+var start = Date.now();
+
+setTimeout(function() {
+  for (var i=Number.MAX_VALUE; i--;) {
+    Math.pow(12345, 123455);
+  }
+}, 100);
+
+setInterval(function() {
+  var now = Date.now();
+  console.log("Han pasado", now - start, "ms");
+  start = now;
+  console.log("Hola otra vez, Mundo del futuro!");
+}, 1000);

ejercicios/reloj.js

@@ -0,0 +1,9 @@
+var EventEmitter = require("events").EventEmitter,
+    inherits = require("util").inherits;
+
+function Reloj() {
+  this.emit("segundo", new Date());
+}
+inherits(Reloj, EventEmitter);
+
+exports.Reloj = Reloj;

tema7/simple/public/code.js

@@ -1,5 +1,18 @@
 $(function() {
 
-  /* Tu código aquí! */
+  var socket = io.connect("http://localhost:3000/"),
+      me = $.get("/me");
+
+  Chat.registerHandler(function(msg) {
+    var msgData = {text: msg, date: new Date()}
+    me.then(function(me) {
+      socket.emit("send:message", me, msgData);
+      Chat.showMyMsg(me, msgData);
+    })
+  })
+
+  socket.on("posted:message", function(user, msgData) {
+    Chat.postMsg(user, msgData);
+  })
 
 });

tema7/simple/server.js

@@ -15,8 +15,8 @@ function extend() {
 function gravatar(email, s) {
   var baseUrl = "http://www.gravatar.com/avatar/",
       parEmail = email.toLowerCase().trim(),
-      hash = crypto.createHash("md5").update(parEmail).digest("hex")
-  return baseUrl + hash + (s? "s="+s : "")
+      hash = crypto.createHash("md5").update(parEmail).digest("hex");
+  return baseUrl + hash + (s? "s="+s : "");
 }
 
 app.configure(function() {
@@ -33,13 +33,26 @@ app.configure(function() {
 
 /* Routas */
 
-app.post("/session", function(req, res) {
+var userData = {}
 
+app.post("/session", function(req, res) {
+  req.session.nick = req.body.nick;
+  req.session.avatar = gravatar(req.body.gravatar, 50);
+  res.redirect("/chat.html")
 });
 
+app.get("/me", function(req, res) {
+  res.send({name: req.session.nick, avatar: req.session.avatar})
+})
 
 app.use(function(req, res) { res.redirect("/login.html"); });
 
 /* WebSockets */
 
+io.sockets.on("connection", function(socket) {
+  socket.on("send:message", function(user, msgData) {
+    socket.broadcast.emit("posted:message", user, msgData)
+  })
+})
+
 server.listen(3000);