Rewrite RSS post feed to be generated

client/public/gen.ex

@@ -2,6 +2,9 @@
 index_template = File.read!("./templates/post_index_page.html")
 post_template = File.read!("./templates/post_single_page.html")
 
+post_feed_item_template = File.read!("./templates/post_item.xml")
+post_feed_template = File.read!("./templates/posts.xml")
+
 post_contents = File.ls!("./posts")
   |> Enum.reject(fn(x) -> String.starts_with?(x, ".") end)
   |> Enum.map(fn f -> File.read!("./posts/" <> f) end)
@@ -47,3 +50,20 @@ post_contents
           end))
       |> File.close()
   end)
+
+post_feed = post_contents
+  |> Enum.sort_by(fn m -> Map.get(m, :date) end)
+  |> Enum.reverse()
+  |> Enum.map(fn post ->
+          Regex.compile!("{{(.*)}}") |>
+    Regex.replace(post_feed_item_template, fn _, key -> Map.get(post, String.to_atom(key))
+    end)
+  end)
+  |> Enum.join("\n")
+  |> (fn items -> (Regex.compile!("{{items}}") |>
+    Regex.replace(post_feed_template, fn _, __ -> items end))
+      end).()
+
+File.open!("./gen/rss.xml", [:write])
+  |> IO.binwrite(post_feed)
+  |> File.close()

client/public/templates/post_item.xml

@@ -0,0 +1,14 @@
+    <item>
+      <title>{{title}}</title>
+      <link>https://raymon.dev/posts/{{id}}.html</link>
+      <guid>https://raymon.dev/posts/{{id}}.html</guid>
+      <description>
+	<![CDATA[
+          {{content}}
+	]]>
+      </description>
+      <content type="html">
+        {{content}}
+      </content>
+      <pubDate>{{date}}</pubDate>
+    </item>

client/public/templates/post_single_page.html

@@ -26,7 +26,7 @@
     <article>
       <header>
         <h1>{{title}}</h1>
-  	<h3>For those using a RSS reader, subscribe here: <a href="/api/posts/rss.xml">rss.xml</a></h3>
+	<h3>For those using a RSS reader, subscribe here: <a href="/posts/rss.xml">rss.xml</a></h3>
       </header>
       <time datetime="{{date}}"></time>
       {{content}}

client/public/templates/posts.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <atom:link href="https://raymon.dev/api/posts/rss.xml" rel="self" type="application/rss+xml" />
+    <title>Posts</title>
+    <link>https://raymon.dev</link>
+    <description>Personal blog</description>
+    <language>en-us</language>
+
+{{items}}
+  </channel>
+</rss>