add comments feed

backend/main.mjs

@@ -6,6 +6,7 @@ import helmet from 'helmet';
 import RateLimit from 'express-rate-limit';
 import morgan from 'morgan';
 import cors from 'cors';
+import { Feed } from 'feed';
 
 // Constants
 
@@ -187,6 +188,59 @@ ORDER BY c.id
     res.json(comments);
 });
 
+// Feed
+
+const domain = process.env.DOMAIN || 'comments.alloca.space';
+
+app.get('/atom/:site', (req, res) => {
+    const site = req.params.site;
+
+    /* lets create an rss feed */
+    var feed = new Feed({
+        title: 'UCS',
+        description: 'תגובות עבור האתר ' + site,
+        id: domain + '/feed/' + site,
+        link: domain,
+        language: 'he'
+    });
+
+    const stmt = db.prepare(`
+SELECT
+  c.id,
+  s.url as site,
+  c.path,
+  c.user,
+  c.user_website,
+  c.message,
+  c.published
+FROM
+  (SELECT id, url from site where url = @site) s
+JOIN comment c
+ON c.site = s.id
+ORDER BY c.published DESC
+;`);
+    const comments = stmt.all({ site });
+
+   for (const comment of comments) {
+       feed.addItem({
+           title:  `New message by '${comment.user}' on ${comment.path}`,
+           description: comment.message,
+           id: `${comment.site}/${comment.path}#comment-${comment.id}`,
+           link: `${comment.site}/${comment.path}#comment-${comment.id}`,
+           date: new Date(comment.published)
+       });
+   }
+
+    var xml = feed.atom1();
+
+    res.set('Content-Type', 'text/xml');
+    res.send(xml);
+});
+
+
+// Listen
+
+
 app.listen(port, () => {
     console.log(`Listening on port ${port}`);
 });

backend/package-lock.json

@@ -15,6 +15,7 @@
         "cors": "^2.8.5",
         "express": "^4.21.2",
         "express-rate-limit": "^7.5.0",
+        "feed": "^4.2.2",
         "helmet": "^8.0.0",
         "morgan": "^1.10.0"
       },
@@ -646,6 +647,18 @@
       "integrity": "sha512-C55Cr/dQWQHdwuMTF+ySNMYqydVclmKdgFHoC/8gTu5Zoe1Nrx6jgArwfZ+7jKU78VjDfhrkGAJ38ucf0lozeQ==",
       "license": "MIT"
     },
+    "node_modules/feed": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/feed/-/feed-4.2.2.tgz",
+      "integrity": "sha512-u5/sxGfiMfZNtJ3OvQpXcvotFpYkL0n9u9mM2vkui2nGo8b4wvDkJ8gAkYqbA8QpGyFCv3RK0Z+Iv+9veCS9bQ==",
+      "license": "MIT",
+      "dependencies": {
+        "xml-js": "^1.6.11"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/file-uri-to-path": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
@@ -1452,6 +1465,12 @@
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
       "license": "MIT"
     },
+    "node_modules/sax": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-1.4.1.tgz",
+      "integrity": "sha512-+aWOz7yVScEGoKNd4PA10LZ8sk0A/z5+nXQG5giUO5rprX9jgYsTdov9qCchZiPIZezbZH+jRut8nPodFAX4Jg==",
+      "license": "ISC"
+    },
     "node_modules/semver": {
       "version": "7.7.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.1.tgz",
@@ -1824,6 +1843,18 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
       "license": "ISC"
+    },
+    "node_modules/xml-js": {
+      "version": "1.6.11",
+      "resolved": "https://registry.npmjs.org/xml-js/-/xml-js-1.6.11.tgz",
+      "integrity": "sha512-7rVi2KMfwfWFl+GpPg6m80IVMWXLRjO+PxTq7V2CDhoGak0wzYzFgUY2m4XJ47OGdXd8eLE8EmwfAmdjw7lC1g==",
+      "license": "MIT",
+      "dependencies": {
+        "sax": "^1.2.4"
+      },
+      "bin": {
+        "xml-js": "bin/cli.js"
+      }
     }
   }
 }

backend/package.json

@@ -21,6 +21,7 @@
     "cors": "^2.8.5",
     "express": "^4.21.2",
     "express-rate-limit": "^7.5.0",
+    "feed": "^4.2.2",
     "helmet": "^8.0.0",
     "morgan": "^1.10.0"
   },