SEO: custom share template (canonical, per-page OG, JSON-LD, robots), robots.txt, OG banner; generator sets shareOpenGraphURL; ignis module STEP example

templates/share/prev_next.ejs

@@ -0,0 +1,62 @@
+<%
+    // TODO: code cleanup + putting this behind a toggle/attribute
+    const previousNote = (() => {
+        // If we are at the subRoot, there is no previous
+        if (note.noteId === subRoot.note.noteId) return null;
+
+        const parent = note.getParentNotes()[0];
+        const children = parent.getVisibleChildNotes();
+        const index = children.findIndex(n => n.noteId === note.noteId);
+
+        // If we are the first child, previous goes up a level
+        // this is already protected by the first if statement
+        if (index === 0) return parent;
+
+        // We are not the first child at this level so previous
+        // should go to the end of the previous tree
+        let candidate = children[index - 1];
+        while (candidate?.hasVisibleChildren()) {
+            const visibleChildren = candidate.getVisibleChildNotes();
+
+            if (visibleChildren.length === 0) {
+                break;
+            }
+
+            candidate = visibleChildren[visibleChildren.length - 1];
+        }
+
+        return candidate ?? null;
+    })();
+
+    const nextNote = (() => {
+        // If this currently active note has children, next
+        // should be the first child
+        if (note.hasVisibleChildren()) return note.getVisibleChildNotes()[0];
+
+        let parent = note.getParentNotes()[0];
+        let children = parent.getVisibleChildNotes();
+        let index = children.findIndex(n => n.noteId === note.noteId);
+
+        // If we are not the last of the current level, just go
+        // to the next sibling note
+        if (index !== children.length - 1) return children[index + 1];
+
+        // We are the last sibling, we need to find the next ancestral note
+        while (index === children.length - 1) {
+            // If we are already at subRoot level, no reason trying to go higher
+            if (parent.noteId === subRoot.note.noteId) return null;
+
+            const originalParent = parent;
+            parent = parent.getParentNotes()[0];
+            children = parent.getVisibleChildNotes();
+            index = children.findIndex(n => n.noteId === originalParent.noteId);
+        }
+
+        return children[index + 1];
+    })();
+%>
+
+<div class="navigation">
+    <% if (previousNote) { %><a class="previous" href="./<%= previousNote.shareId %>"><%= previousNote.title %></a><% } %>
+    <% if (nextNote) { %><a class="next" href="./<%= nextNote.shareId %>"><%= nextNote.title %></a><% } %>
+</div>