Working version of wiki

app.js

@@ -1,4 +1,40 @@
-var Stack = require('stack');
+var Express = require('express');
+var Routes = require('./routes');
 
-module.exports = Stack.compose(
+// TODO: Uncomment when we have internet
-);
+// var TryCatch = require('./trycatch');
+
+var App = module.exports = Express.createServer();
+
+// Configuration
+
+App.configure(function(){
+  App.set('views', __dirname + '/views');
+  App.set('view engine', 'jade');
+  // This gives us scoped errors with long stack traces
+  // TODO: Uncomment when we have internet
+  // App.use(function (req, res, next) {
+  //   TryCatch(next, next);
+  // });
+  App.use(Express.bodyParser());
+  App.use(Express.methodOverride());
+  App.use(App.router);
+  App.use(Express.static(__dirname + '/public'));
+});
+
+App.configure('development', function(){
+  App.use(Express.errorHandler({ dumpExceptions: true, showStack: true })); 
+});
+
+App.configure('production', function(){
+  App.use(Express.errorHandler()); 
+});
+
+// Routes
+App.get('/', Routes.index);
+App.get('/:name', Routes.view);
+App.get('/:name/edit', Routes.edit);
+App.post('/:name', Routes.save);
+
+App.listen(process.env.PORT || 3000);
+console.log("Express server listening on port %d in %s mode", App.address().port, App.settings.env);

db.js

@@ -0,0 +1,57 @@
+var FS = require('fs');
+var Path = require('path');
+var Markdown = require('markdown').markdown;
+
+// This function is used to map wiki page names to files
+// on the real filesystem.
+function pathFromName(name) {
+  return Path.join(__dirname, "pages", name + ".markdown");
+}
+
+// Load a file from disk and parse out the title and generate the HTML
+exports.loadPage = function (name, callback) {
+  // Attempt to load the file from disk
+  var path = pathFromName(name);
+  FS.readFile(path, 'utf8', function (err, markdown) {
+    var exists = true;
+    if (err) {
+      // If it's not there, generate a placeholder body
+      if (err.code === "ENOENT") {
+        markdown = "# " + name.replace(/_/g, " ") + "\n\n" + 
+                   "This page does not exist yet.  Be the first to write it.";
+        exists = false;
+      } else {
+        // Forward all other errors on
+        return callback(err);
+      }
+    }
+
+    // Parse the markdown extracting the first header as the title
+    // and then render as an HTML string
+    var tree = Markdown.parse(markdown);
+    var title = name;
+    for (var i = 1, l = tree.length; i < l; i++) {
+      if (tree[i] && tree[i][0] === "header") {
+        title = tree[i][2];
+        tree.splice(i, 1);
+        break;
+      }
+    }
+    var html = Markdown.toHTML(tree);
+
+    // Send back the page as an object
+    callback(null, {
+      name: name,
+      title: title,
+      exists: exists,
+      markdown: markdown,
+      html: html,
+    });
+  });
+};
+
+// Saving is simple.  Just put the markdown in the file
+exports.savePage = function (name, value, callback) {
+  var path = pathFromName(name);
+  FS.writeFile(path, value, callback);
+};

package.json

@@ -1,8 +1,10 @@
 {
   "name": "wiki-contest",
   "version": "0.0.0",
-  "author": "Tim Caswell <tim@c9.io>",
   "private": true,
   "dependencies": {
+    "express": "2.5.5",
+    "jade": ">= 0.0.1",
+    "markdown": "~0.3.1"
   }
 }

pages/home.markdown

@@ -0,0 +1,5 @@
+# Home Page
+
+This is the homepage of the wiki.
+
+Cool stuff here.

public/stylesheets/style.css

@@ -0,0 +1,8 @@
+body {
+  padding: 50px;
+  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
+}
+
+a {
+  color: #00B7FF;
+}

routes/index.js

@@ -0,0 +1,31 @@
+// Load our model abstraction so we can load and save pages in the wiki.
+var DB = require('../db');
+
+// When the wiki is initially loaded, simply redirect to the `home` page.
+exports.index = function(req, res) {
+  res.redirect("/home");
+};
+
+// Load a page from the database and render as html
+exports.view = function (req, res, next) {
+  DB.loadPage(req.params.name, function (err, page) {
+    if (err) return next(err);
+    res.render('view', page);
+  });
+};
+
+// Load a page from the database and render edit form
+exports.edit = function (req, res, next) {
+  DB.loadPage(req.params.name, function (err, page) {
+    if (err) return next(err);
+    res.render('edit', page);
+  });
+};
+
+// Save changes to a page and redirect to view page
+exports.save = function (req, res, next) {
+  DB.savePage(req.params.name, req.body.markdown, function (err) {
+    if (err) return next(err)
+    res.redirect("/" + req.params.name);
+  });
+}

server.js

@@ -1,13 +0,0 @@
-var Http = require('http');
-var Stack = require('stack');
-var Creationix = require('creationix');
-var App = require('./app');
-
-var PORT = process.env.PORT || 8080;
-
-Http.createServer(Stack(
-  Creationix.log(),
-  App
-)).listen(PORT);
-console.log("Server listening on http://localhost:%s/", PORT);
-

views/edit.jade

@@ -0,0 +1,4 @@
+h1= title
+form(method="post", action="/" + name)
+  textarea(name="markdown")= markdown
+  input(type="submit")

views/layout.jade

@@ -0,0 +1,6 @@
+!!!
+html
+  head
+    title= title
+    link(rel='stylesheet', href='/stylesheets/style.css')
+  body!= body

views/view.jade

@@ -0,0 +1,3 @@
+h1= title
+.article!= html
+a(href="/" + name + "/edit")= (exists ? "Edit" : "Create") + " this Page"