:lightning: client-side nav

README.md

@@ -5,7 +5,10 @@ A Flask-based webcomic website with server-side rendering using Jinja2 templates
 ## Features
 
 - Comic viewer with navigation (First, Previous, Next, Latest)
+- Client-side navigation using JSON API (no page reloads)
 - Archive page with thumbnail grid
+- RSS feed support
+- JSON API for programmatic access
 - Responsive design
 - Server-side rendering with Jinja2
 - Clean, comic-focused layout
@@ -33,6 +36,8 @@ sunday/
 └── static/                  # Static files
     ├── css/
     │   └── style.css        # Main stylesheet
+    ├── js/
+    │   └── comic-nav.js     # Client-side navigation
     ├── images/              # Comic images
     │   └── thumbs/          # Thumbnail images for archive
     └── feed.rss             # RSS feed (generated)

static/js/comic-nav.js

@@ -0,0 +1,151 @@
+// Client-side comic navigation using the API
+(function() {
+    'use strict';
+
+    let totalComics = 0;
+
+    // Fetch and display a comic
+    async function loadComic(comicId) {
+        try {
+            const response = await fetch(`/api/comics/${comicId}`);
+
+            if (!response.ok) {
+                if (response.status === 404) {
+                    window.location.href = '/404';
+                    return;
+                }
+                throw new Error('Failed to load comic');
+            }
+
+            const comic = response.json ? await response.json() : comic;
+            displayComic(comic);
+
+        } catch (error) {
+            console.error('Error loading comic:', error);
+        }
+    }
+
+    // Update the page with comic data
+    function displayComic(comic) {
+        // Update title
+        const title = comic.title || `#${comic.number}`;
+        document.querySelector('.comic-header h1').textContent = title;
+
+        // Update date
+        document.querySelector('.comic-date').textContent = comic.date;
+
+        // Update image
+        const img = document.querySelector('.comic-image img');
+        img.src = `/static/images/${comic.filename}`;
+        img.alt = title;
+        img.title = comic.alt_text;
+
+        // Update author note
+        const transcriptDiv = document.querySelector('.comic-transcript');
+        if (comic.author_note) {
+            if (!transcriptDiv) {
+                const container = document.querySelector('.comic-container');
+                const newDiv = document.createElement('div');
+                newDiv.className = 'comic-transcript';
+                newDiv.innerHTML = '<h3>Author Note</h3><p></p>';
+                container.appendChild(newDiv);
+            }
+            document.querySelector('.comic-transcript p').textContent = comic.author_note;
+            document.querySelector('.comic-transcript').style.display = 'block';
+        } else if (transcriptDiv) {
+            transcriptDiv.style.display = 'none';
+        }
+
+        // Update navigation buttons
+        updateNavButtons(comic.number);
+
+        // Update page title
+        document.title = `${title} - Sunday Comics`;
+
+        // Update URL without reload
+        history.pushState({ comicId: comic.number }, '', `/comic/${comic.number}`);
+    }
+
+    // Update navigation button states
+    function updateNavButtons(currentNumber) {
+        const navButtons = document.querySelector('.nav-buttons');
+
+        // First button
+        const firstBtn = navButtons.children[0];
+        if (currentNumber > 1) {
+            firstBtn.className = 'btn btn-nav';
+            firstBtn.onclick = (e) => { e.preventDefault(); loadComic(1); };
+        } else {
+            firstBtn.className = 'btn btn-nav btn-disabled';
+            firstBtn.onclick = null;
+        }
+
+        // Previous button
+        const prevBtn = navButtons.children[1];
+        if (currentNumber > 1) {
+            prevBtn.className = 'btn btn-nav';
+            prevBtn.onclick = (e) => { e.preventDefault(); loadComic(currentNumber - 1); };
+        } else {
+            prevBtn.className = 'btn btn-nav btn-disabled';
+            prevBtn.onclick = null;
+        }
+
+        // Comic number display
+        navButtons.children[2].textContent = `Comic #${currentNumber}`;
+
+        // Next button
+        const nextBtn = navButtons.children[3];
+        if (currentNumber < totalComics) {
+            nextBtn.className = 'btn btn-nav';
+            nextBtn.onclick = (e) => { e.preventDefault(); loadComic(currentNumber + 1); };
+        } else {
+            nextBtn.className = 'btn btn-nav btn-disabled';
+            nextBtn.onclick = null;
+        }
+
+        // Latest button
+        const latestBtn = navButtons.children[4];
+        if (currentNumber < totalComics) {
+            latestBtn.className = 'btn btn-nav';
+            latestBtn.onclick = (e) => { e.preventDefault(); loadComic(totalComics); };
+        } else {
+            latestBtn.className = 'btn btn-nav btn-disabled';
+            latestBtn.onclick = null;
+        }
+    }
+
+    // Initialize on page load
+    async function init() {
+        // Only run on comic pages
+        if (!document.querySelector('.comic-container')) {
+            return;
+        }
+
+        // Get total comics count from the page
+        totalComics = parseInt(document.querySelector('.comic-container').dataset.totalComics || 0);
+
+        // Get current comic number
+        const currentNumber = parseInt(document.querySelector('.comic-container').dataset.comicNumber || 0);
+
+        if (currentNumber && totalComics) {
+            updateNavButtons(currentNumber);
+        }
+
+        // Handle browser back/forward
+        window.addEventListener('popstate', (event) => {
+            if (event.state && event.state.comicId) {
+                loadComic(event.state.comicId);
+            }
+        });
+
+        // Set initial state
+        history.replaceState({ comicId: currentNumber }, '', window.location.pathname);
+    }
+
+    // Run when DOM is ready
+    if (document.readyState === 'loading') {
+        document.addEventListener('DOMContentLoaded', init);
+    } else {
+        init();
+    }
+})();

templates/base.html

@@ -61,6 +61,7 @@
         </div>
     </footer>
 
+    <script src="{{ url_for('static', filename='js/comic-nav.js') }}"></script>
     {% block extra_js %}{% endblock %}
 </body>
 </html>

templates/comic.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block content %}
-<div class="comic-container">
+<div class="comic-container" data-comic-number="{{ comic.number }}" data-total-comics="{{ total_comics }}">
     <div class="comic-header">
         <h1>{{ comic.title if comic.title else '#' ~ comic.number }}</h1>
         <p class="comic-date">{{ comic.date }}</p>

templates/index.html

@@ -1,7 +1,7 @@
 {% extends "base.html" %}
 
 {% block content %}
-<div class="comic-container">
+<div class="comic-container" data-comic-number="{{ comic.number }}" data-total-comics="{{ total_comics }}">
     <div class="comic-header">
         <h1>{{ comic.title if comic.title else '#' ~ comic.number }}</h1>
         <p class="comic-date">{{ comic.date }}</p>