Move sharing message management into a lib

shareMessage.js

+const querystring = require('querystring');
+
+module.exports = function(req) {
+  let _req = req;
+  let _ = req.i18n._;
+  let _lqdnName = "@laquadrature";
+
+  this.getUrl = function() {
+    return _req.protocol + '://'
+      + _req.headers.host + '/'
+      + (global.config.subdir || '')
+      + '?'
+      + querystring.stringify(_req.args)
+      + '&lang=' + _req.i18n.getLocale();
+  }
+
+  this.getTitle = function() {
+    return (_req.args.signature ? _('Faites comme ') + encodeURIComponent(_req.args.signature) + ', s' : 'S')
+      + _('outenez ')
+      + _lqdnName + ' ! #LQDoN';
+  }
+
+  this.getContent = function() {
+    return _req.protocol + "://" + _req.headers.host;
+  }
+
+  this.getTwitterLink = function() {
+    return 'https://twitter.com/intent/tweet?text='
+      + encodeURIComponent(this.getTitle()
+			   + ' ' + this.getContent()
+			   + ' ' + this.getUrl());
+  }
+
+  this.getFacebookLink = function() {
+    return 'https://www.facebook.com/sharer/sharer.php?u='
+      + encodeURIComponent(this.getUrl());
+  }
+
+  this.getDiasporaLink = function() {
+    _lqdnName = "La Quadrature du Net";
+    return 'https://share.diasporafoundation.org/?title='
+      + encodeURIComponent(this.getTitle() + ' ' + this.getContent())
+      + '&url=' + encodeURIComponent(this.getUrl());
+  }
+
+  this.getMastodonLink = function() {
+    return 'https://mamot.fr/share?text='
+      + encodeURIComponent(this.getTitle()
+			   + ' ' + this.getContent()
+			   + ' ' + this.getUrl());
+  }
+}

srv.js

@@ -6,8 +6,9 @@ const express = require('express');
 const Canvas = require('canvas');
 const Image = Canvas.Image;
 const app = express();
-const config = require('./config.json');
+global.config = require('./config.json');
 const i18n = require('./i18n.js');
+const ShareMessage = require('./shareMessage.js');
 
 app.set('trust proxy', true);
 app.set('x-powered-by', false);
@@ -83,57 +84,6 @@ for (let i in fonts) {
 }
 Canvas.registerFont('./static/fonts/FiraSans-Bold.otf', {family: 'FiraSans', weight: 'bold'});
 
-function ShareMessage(req) {
-  let _req = req;
-  let _ = req.i18n._;
-  let _lqdnName = "@laquadrature";
-
-  this.getUrl = function() {
-    return _req.protocol + '://'
-      + _req.headers.host + '/'
-      + (config.subdir || '')
-      + '?'
-      + querystring.stringify(_req.args)
-      + '&lang=' + _req.i18n.getLocale();
-  }
-
-  this.getTitle = function() {
-    return (_req.args.signature ? _('Faites comme ') + encodeURIComponent(_req.args.signature) + ', s' : 'S')
-      + _('outenez ')
-      + _lqdnName + ' ! #LQDoN';
-  }
-
-  this.getContent = function() {
-    return _req.protocol + "://" + _req.headers.host;
-  }
-
-  this.getTwitterLink = function() {
-    return 'https://twitter.com/intent/tweet?text='
-      + encodeURIComponent(this.getTitle()
-			   + ' ' + this.getContent()
-			   + ' ' + this.getUrl());
-  }
-
-  this.getFacebookLink = function() {
-    return 'https://www.facebook.com/sharer/sharer.php?u='
-      + encodeURIComponent(this.getUrl());
-  }
-
-  this.getDiasporaLink = function() {
-    _lqdnName = "La Quadrature du Net";
-    return 'https://share.diasporafoundation.org/?title='
-      + encodeURIComponent(this.getTitle() + ' ' + this.getContent())
-      + '&url=' + encodeURIComponent(this.getUrl());
-  }
-
-  this.getMastodonLink = function() {
-    return 'https://mamot.fr/share?text='
-      + encodeURIComponent(this.getTitle()
-			   + ' ' + this.getContent()
-			   + ' ' + this.getUrl());
-  }
-}
-
 app.get('/generate.png', function (req, res) {
   let _ = req.i18n._;