Using Negotiator for accept-language parsing

[KiwiIRC.git] / server / httphandler.js

diff --git a/server/httphandler.js b/server/httphandler.js
index e58a9deaa8ff4ee2e6a55bf9f20b4a63f8856769..1fdcf95f7dead34e69d0d33c72a84f5262e7f4c5 100644 (file)
--- a/server/httphandler.js
+++ b/server/httphandler.js
@@ -1,13 +1,17 @@
 var url         = require('url'),
     fs          = require('fs'),
     node_static = require('node-static'),
-    _           = require('lodash');
+    Negotiator  = require('negotiator'),
+    _           = require('lodash'),
+    config      = require('./configuration.js'),
+    SettingsGenerator = require('./settingsgenerator.js');
+
 
 
 
 var HttpHandler = function (config) {
-    var public_html = config.public_html || 'client/';
-    this.file_server = new node_static.Server(public_html);
+    var public_http = config.public_http || 'client/';
+    this.file_server = new node_static.Server(public_http);
 };
 
 module.exports.HttpHandler = HttpHandler;
@@ -30,18 +34,24 @@ HttpHandler.prototype.serve = function (request, response) {
     // Any asset request to head into the asset dir
     request.url = request.url.replace(base_path + '/assets/', '/assets/');
 
+    // Any src request to head into the src dir
+    request.url = request.url.replace(base_path + '/src/', '/src/');
+
     // Any requests for /client to load the index file
     if (request.url.match(new RegExp('^' + base_path_regex + '([/$]|$)', 'i'))) {
-        request.url = '/';
+        request.url = '/index.html';
     }
 
     // If the 'magic' translation is requested, figure out the best language to use from
-    // the Accept-Language HTTP header. If nothing is suitible, serve an empty response,
-    // Kiwi will just use the default en-gb strings baked in to it.
-    if (request.url === '/assets/locales/magic.json') {
-        return serveMagicLocale.call(this, request, response);
-    } else if (request.url.substr(0, 16) === '/assets/locales/') {
-        response.setHeader('Content-Language', request.url.substr(16, request.url.indexOf('.') - 16));
+    // the Accept-Language HTTP header. If nothing is suitible, fallback to our en-gb default translation
+    if (request.url.substr(0, 16) === '/assets/locales/') {
+        if (request.url === '/assets/locales/magic.json') {
+            return serveMagicLocale.call(this, request, response);
+        } else {
+            response.setHeader('Content-Language', request.url.substr(16, request.url.indexOf('.') - 16));
+        }
+    } else if (request.url.substr(0, 21) === '/assets/settings.json') {
+        return serveSettings.call(this, request, response);
     }
 
     this.file_server.serve(request, response, function (err) {
@@ -52,45 +62,74 @@ HttpHandler.prototype.serve = function (request, response) {
     });
 };
 
-var serveMagicLocale = function (request, response) {
-    var langs = [],
-        available = [],
-        i = 0;
-    if (request.headers['accept-language']) {
-        // Example: en-gb,en;q=0.5
-        langs = request.headers['accept-language'].split(',');
-        available = (function () {
-            var files = [],
-                l = [];
-            files = fs.readdirSync('client/assets/locales');
-            files.forEach(function (file) {
-                if (file.slice(-5) === '.json') {
-                    l.push(file.slice(0, -5));
-                }
-            });
-            return l;
-        })();
-        for (i = 0; i < langs.length; i++) {
-            langs[i] = langs[i].split(';q=');
-            langs[i][1] = (typeof langs[i][1] === 'string') ? parseFloat(langs[i][1]) : 1.0;
+
+// Cached list of available translations
+var cached_available_locales = [];
+
+// Get a list of the available translations we have
+fs.readdir('client/assets/locales', function (err, files) {
+    files.forEach(function (file) {
+        if (file.substr(-5) === '.json') {
+            cached_available_locales.push(file.slice(0, -5));
         }
-        langs.sort(function (a, b) {
-            return b[1] - a[1];
-        });
+    });
+});
+
+
+
+/**
+ * Handle the /assets/locales/magic.json request
+ * Find the closest translation we have for the language
+ * set in the browser.
+ **/
+var serveMagicLocale = function (request, response) {
+    var default_locale_id = 'en-gb',
+        found_locale, negotiator;
 
-        for (i = 0; i < langs.length; i++) {
-            if (langs[i][0] === '*') {
-                break;
-            } else if (_.contains(available, langs[i][0])) {
-                return this.file_server.serveFile('/assets/locales/' + langs[i][0] + '.json', 200, {Vary: 'Accept-Language', 'Content-Language': langs[i][0]}, request, response);
-            }
+    if (!request.headers['accept-language']) {
+        // No accept-language specified in the request so send the default
+        found_locale = default_locale_id;
+
+    } else {
+        negotiator = new Negotiator(request);
+        found_locale = negotiator.language(cached_available_locales);
+    }
+
+    // Send a locale to the browser
+    this.file_server.serveFile('/assets/locales/' + found_locale + '.json', 200, {
+        Vary: 'Accept-Language',
+        'Content-Language': found_locale
+    }, request, response);
+};
+
+
+
+/**
+ * Handle the settings.json request
+ */
+var serveSettings = function(request, response) {
+    var referrer_url,
+        debug = false,
+        settings;
+
+    // Check the referrer for a debug option
+    if (request.headers['referer']) {
+        referrer_url = url.parse(request.headers['referer'], true);
+        if (referrer_url.query && referrer_url.query.debug) {
+            debug = true;
         }
     }
 
-    response.writeHead(200, {
-        'Vary': 'Accept-Language',
-        'Content-Type': 'application/json',
-        'Content-Language': 'en-gb'
+    SettingsGenerator.get(debug, function(settings) {
+        if (request.headers['if-none-match'] && request.headers['if-none-match'] === settings.hash) {
+            response.writeHead(304, 'Not Modified');
+            return response.end();
+        }
+
+        response.writeHead(200, {
+            'ETag': settings.hash,
+            'Content-Type': 'application/json'
+        });
+        response.end(settings.settings);
     });
-    response.end('{"en-gb": {"":{}}}');
 };