From e5e2c126e20e04f1737b655ed74e8b23cc826e65 Mon Sep 17 00:00:00 2001
From: Ellpeck <megamaximal@gmail.com>
Date: Fri, 4 Oct 2019 23:20:47 +0200
Subject: [PATCH] added feeds

---
 .gitignore      |  2 ++
 index.html      |  2 ++
 node/rss.js     | 75 ++++++++++++++++++++++++++++++++++++++++++++++
 node/server.js  |  6 ++++
 node/sitemap.js | 80 ++++++++++++++++++++++++-------------------------
 5 files changed, 125 insertions(+), 40 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 node/rss.js
 create mode 100644 node/server.js

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..25c8fdb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+package-lock.json
\ No newline at end of file
diff --git a/index.html b/index.html
index b514e07..b9fedc6 100644
--- a/index.html
+++ b/index.html
@@ -148,7 +148,9 @@
             <h1>Blog</h1>
             <p>
                 Occasionally I enjoy writing stuff. So here's some of the stuff I've written. Just click on any of the headers to expand the post.
+                <br>Alternatively, you can subscribe to this blog using <a href="/rss.xml">RSS</a>, <a href="/atom.xml">Atom</a> or <a href="/feed.json">JSON</a>.
             </p>
+
             <div id="blog-list">
                 <em>The content that should be here is dynamically generated. Please enable JavaScript if you see this.</em>
             </div>
diff --git a/node/rss.js b/node/rss.js
new file mode 100644
index 0000000..133a8db
--- /dev/null
+++ b/node/rss.js
@@ -0,0 +1,75 @@
+const {
+    Feed
+} = require("feed");
+const fs = require("fs");
+const showdown = require("showdown");
+const converter = new showdown.Converter({
+    parseImgDimensions: true
+});
+
+module.exports = function (app) {
+    app.get('/rss.xml', function (_req, res) {
+        createFeed(function (feed) {
+            res.header('Content-Type', 'application/xml');
+            res.send(feed.rss2());
+        });
+    });
+    app.get('/feed.json', function (_req, res) {
+        createFeed(function (feed) {
+            res.header('Content-Type', 'application/json');
+            res.send(feed.json1());
+        });
+    });
+    app.get('/atom.xml', function (_req, res) {
+        createFeed(function (feed) {
+            res.header('Content-Type', 'application/xml');
+            res.send(feed.atom1());
+        });
+    })
+}
+
+function createFeed(callback) {
+    const feed = new Feed({
+        title: "Ellpeck's Blog",
+        description: "Occasionally I enjoy writing stuff. So here's some of the stuff I've written about gaming, programming and life.",
+        id: "https://ellpeck.de",
+        link: "https://ellpeck.de",
+        image: "https://ellpeck.de/res/logo.png",
+        favicon: "https://ellpeck.de/favicon.ico",
+        feedLinks: {
+            json: "https://ellpeck.de/feed.json",
+            atom: "https://ellpeck.de/atom.xml"
+        },
+        author: {
+            name: "Ellpeck",
+            email: "me@ellpeck.de",
+            link: "https://ellpeck.de"
+        }
+    });
+
+    fs.readFile(__dirname + "/../blog/posts.json", function (_, data) {
+        var json = JSON.parse(data);
+        for (let i = json.length - 1; i >= 0; i--) {
+            var post = json[i];
+            var id = post["id"];
+            var date = new Date(post["date"]);
+
+            fs.readFile(__dirname + "/../blog/" + id + ".md", function (_, content) {
+                var html = converter.makeHtml(content.toString());
+                feed.addItem({
+                    title: post["name"],
+                    id: id,
+                    link: "https://ellpeck.de/#blog-" + id,
+                    description: post["summary"],
+                    content: html,
+                    date: date,
+                    published: date
+                });
+
+                if (i == 0) {
+                    callback(feed);
+                }
+            });
+        }
+    });
+}
\ No newline at end of file
diff --git a/node/server.js b/node/server.js
new file mode 100644
index 0000000..3b47ce2
--- /dev/null
+++ b/node/server.js
@@ -0,0 +1,6 @@
+const express = require("express");
+
+var app = express();
+require("./rss")(app);
+require("./sitemap")(app);
+app.listen(3000);
\ No newline at end of file
diff --git a/node/sitemap.js b/node/sitemap.js
index 9756bdc..cb729b3 100644
--- a/node/sitemap.js
+++ b/node/sitemap.js
@@ -1,48 +1,48 @@
-const express = require('express');
 const {
     createSitemap
 } = require('sitemap');
 const fs = require("fs");
 
-let app = express();
-app.get('/sitemap.xml', function (_req, res) {
-    let sitemap = createSitemap({
-        hostname: 'https://ellpeck.de',
-        urls: [{
-                url: '/',
-                priority: 0.8
-            },
-            {
-                url: '/#projects',
-                changefreq: 'monthly'
-            },
-            {
-                url: '/#social',
-                changefreq: 'yearly'
-            },
-            {
-                url: '/#about',
-                changefreq: 'monthly'
-            },
-            {
-                url: '/#blog',
-                changefreq: 'weekly',
-                priority: 0.6
+module.exports = function (app) {
+    app.get('/sitemap.xml', function (_req, res) {
+        let sitemap = createSitemap({
+            hostname: 'https://ellpeck.de',
+            urls: [{
+                    url: '/',
+                    priority: 0.8
+                },
+                {
+                    url: '/#projects',
+                    changefreq: 'monthly'
+                },
+                {
+                    url: '/#social',
+                    changefreq: 'yearly'
+                },
+                {
+                    url: '/#about',
+                    changefreq: 'monthly'
+                },
+                {
+                    url: '/#blog',
+                    changefreq: 'weekly',
+                    priority: 0.6
+                }
+            ]
+        });
+
+        fs.readFile(__dirname + "/../blog/posts.json", function (_, data) {
+            var json = JSON.parse(data);
+
+            for (var post of json) {
+                sitemap.add({
+                    url: "/#blog-" + post["id"],
+                    priority: 0.4
+                });
             }
-        ]
-    });
 
-    fs.readFile(__dirname + "/../blog/posts.json", function (_, data) {
-        var json = JSON.parse(data);
-        for (var post of json) {
-            sitemap.add({
-                url: "/#blog-" + post["id"],
-                priority: 0.4
-            });
-        }
-
-        res.header('Content-Type', 'application/xml');
-        res.send(sitemap.toXML());
+            res.header('Content-Type', 'application/xml');
+            res.send(sitemap.toXML());
+        });
     });
-});
-app.listen(3000);
\ No newline at end of file
+}
\ No newline at end of file