First/last links on articles; lastmod hidden when null

README.md

@@ -0,0 +1,3 @@
+# Jimsite
+
+<!-- TODO: Write README -->

jimsite/articles.py

@@ -107,7 +107,23 @@ def build_articles(
     '''Generates HTML files for all of a given site's Markdown articles
     by interpolating the contents and metadata into the HTML templates.'''
 
-    for article in index.values():
+    # Include the previous and next articles (if available) in the iteration
+    # in case the article template wants to link to them.
+    for previous_article, article, next_article in zip(
+        ([None] + [*index.values()][:-1]),
+        index.values(),
+        ([*index.values()][1:] + [None])
+    ):
+        # Create a dummy to be used for the first article's "previous" and the last 
+        # article's "next" to avoid errors if trying to access into None.
+        dummy_article = Article(
+            path = '',
+            content = '',
+            metadata = ArticleMetadata(
+                title = '', date = date(1,1,1), published = False, tags = []
+            )
+        )
+
         article_html = format_html_template(
             template_selections['article'],
             article = article,
@@ -115,7 +131,9 @@ def build_articles(
                 article.metadata.tags, template_selections['tag'], site = site
             )),
             templates = templates,
-            site = site
+            site = site,
+            previous_article = previous_article or dummy_article,
+            next_article = next_article or dummy_article
         )
 
         page_html = format_html_template(

jimsite/common.py

@@ -2,15 +2,32 @@ import os
 import inspect
 import subprocess
 import pydantic
+import logging
 from dotmap import DotMap
 from typing import Optional
 from datetime import date, datetime
 
-run = lambda cmd: subprocess.run(
-    cmd.split(' '),
-    stdout = subprocess.PIPE,
-    stderr = subprocess.PIPE
-)
+logger = logging.getLogger(__name__)
+
+
+def run(cmd: list|str, log_errors = True, debug = True) -> tuple:
+
+    if isinstance(cmd, str):
+        cmd = cmd.split(' ')
+
+    res = subprocess.run(cmd, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
+    res.stdout = res.stdout.decode().strip()
+    res.stderr = res.stderr.decode().strip()
+    res.cmd = cmd
+
+    if debug:
+        logger.debug(res)
+
+    if log_errors and res.stderr:
+        logger.exception(res.stderr)
+
+    return res
+
 
 def filepath_or_string(s: str) -> str:
     '''Loads the contents of a string if it is a filepath, otherwise returns the string.'''

site/assets/css/theme.css

@@ -232,7 +232,6 @@ img {
 
 ul > li::marker {
     content: '⍟ ';
-    /* TODO: Decide on a default li marker for the theme*/
 }
 
 ul:has(> .blog-archive-li){
@@ -255,4 +254,21 @@ ul:has(> .blog-archive-li){
 
 .blog-archive-li > time {
     float: right;
+}
+
+a.next-article-link{
+    float: right;
+}
+
+a.previous-article-link[data=""], a.next-article-link[data=""]{
+    display: none;
+}
+
+time.last-modified-date[data="None"],
+time.last-modified-date[data="None"] ~ span.first-published-label,
+time.last-modified-date[data="None"] ~ span.last-modified-label,
+span.first-published-label:has(~ time.last-modified-date[data="None"]),
+span.last-modified-label:has(~ time.last-modified-date[data="None"])
+{
+    display: None;
 }

site/templates/components/blog_article.html

@@ -1,6 +1,9 @@
 <article>
     <!-- TODO: Fix the layout -->
-    First published: <time pubdate datetime="{article.metadata.date}">{article.metadata.date}</time> · Last modified: <time pubdate datetime="{article.metadata.lastmod}">{article.metadata.lastmod}</time>
+    <span class="first-published-label">First published: </span>
+    <time class="first-published-date" pubdate data="{article.metadata.date}" datetime="{article.metadata.date}">{article.metadata.date}</time>
+    <span class="last-modified-label"> · Last modified: </span>
+    <time class="last-modified-date" data="{article.metadata.lastmod}" datetime="{article.metadata.lastmod}">{article.metadata.lastmod}</time>
     <hr />
     <h1 class="headline">{article.metadata.title}</h1>
     <p class="byline">
@@ -8,5 +11,9 @@
     </p>
     {article.content}
     <br /><hr /><br />
+    <p>
+        <a href="{previous_article.path}" title="{previous_article.metadata.title}" data="{previous_article.path}" class="previous-article-link">&lt; Previous</a>
+        <a href="{next_article.path}" title="{next_article.metadata.title}" data="{next_article.path}" class="next-article-link">Next &gt;</a>
+    </p>
     <p>Tags: {blog_tags}<span>{templates.components.rss_icon}</span></p>
 </article>

site/templates/partials/footer.html

@@ -1,3 +1,4 @@
 <footer>
+    <!-- Add socials (email, Matrix, Friendica, Gitea)-->
 <br /><span class='copyright'>Copyright &copy; 2021-{globalvars.today.year} Jim Shepich</span>
 </footer>