add "how to blog" blog post

feed.xml

@@ -59,6 +59,14 @@
   <summary>What did people make and what did I learn?</summary>
 </entry>
 
+<entry>
+  <title>How to create a blog (gist)</title>
+  <link href='https://blog.alifeee.co.uk/https://gist.github.com/alifeee/c857bfb45bfd260a9b9dd9c45e4f7478' />
+  <id>https://blog.alifeee.co.uk//https://gist.github.com/alifeee/c857bfb45bfd260a9b9dd9c45e4f7478</id>
+  <updated>2024-01-17T00:00:00+00:00</updated>
+  <summary>How to create a blog (gist)</summary>
+</entry>
+
 <entry>
   <title>Making my own Font - BogFace</title>
   <link href='https://blog.alifeee.co.uk/making-bogface' />

index.html

@@ -362,6 +362,28 @@ <h2 class="title">I ran a computer font-making workshop!</h2>
             </hgroup>
           </a>
         </li>
+        <li class="post">
+          <a
+            href="https://gist.github.com/alifeee/c857bfb45bfd260a9b9dd9c45e4f7478"
+            class="link"
+          >
+            <div class="preview-image">
+              <img
+                src="./images/hat.png"
+                alt="picture of a hat"
+                height="450"
+                width="450"
+              />
+            </div>
+            <hgroup class="info">
+              <h2 class="title">How to create a blog (gist)</h2>
+              <p class="date">
+                <time datetime="2024-01-17">2024-01-17</time>
+              </p>
+              <ul class="categories"></ul>
+            </hgroup>
+          </a>
+        </li>
         <li class="post">
           <a href="./making-bogface" class="link">
             <div class="preview-image">

utilities.py/post_parser.py

@@ -67,10 +67,14 @@ def get_all_posts() -> List[Post]:
         date = date.replace(tzinfo=ZoneInfo("Etc/UTC"))
 
         index_path = f"{relative_url}/index.html"
-        with open(index_path, "r", encoding="utf-8") as file:
-            post_soup = BeautifulSoup(file, "html.parser")
-        title = post_soup.find("meta", property="og:title")["content"]
-        description = post_soup.find("meta", property="og:description")["content"]
+        if os.path.exists(index_path):
+            with open(index_path, "r", encoding="utf-8") as file:
+                post_soup = BeautifulSoup(file, "html.parser")
+            title = post_soup.find("meta", property="og:title")["content"]
+            description = post_soup.find("meta", property="og:description")["content"]
+        else:
+            title = post.find("h2").get_text()
+            description = title
 
         posts.append(
             Post(
@@ -85,13 +89,9 @@ def get_all_posts() -> List[Post]:
 
     # make sure all relative_url's exist
     for post in posts:
-        assert os.path.exists(
+        assert post.relative_url.startswith("https") or os.path.exists(
             post.relative_url
         ), f"post {post.relative_url} does not exist"
-    # make sure all md_url's exist
-    for post in posts:
-        if not os.path.exists(post.md_url):
-            print(f"warning: post {post.md_url} does not exist")
 
     posts.sort(key=lambda x: x.date, reverse=True)
     return posts