PR title: Fix deep page nesting in sidebar, prev/next order, and parent dropdown indent

package.json

@@ -1,7 +1,7 @@
 {
   "name": "codex.docs",
   "license": "Apache-2.0",
-  "version": "2.2.4",
+  "version": "2.3.0",
   "type": "module",
   "bin": {
     "codex.docs": "dist/backend/app.js"

src/backend/build-static.ts

@@ -105,8 +105,7 @@ export default async function buildStatic(): Promise<void> {
     const parentIdOfRootPages = '0' as EntityId;
     const previousPage = await PagesFlatArray.getPageBefore(pageId);
     const nextPage = await PagesFlatArray.getPageAfter(pageId);
-    const menu = createMenuTree(parentIdOfRootPages, allPages, pagesOrder, 2);
-
+    const menu = createMenuTree(parentIdOfRootPages, allPages, pagesOrder);
     const result = await renderTemplate('./views/pages/page.twig', {
       page,
       pageParent,

src/backend/controllers/pages.ts

@@ -86,6 +86,42 @@ class Pages {
     return pagesMap;
   }
 
+  /**
+   * Depth in parent chain: 0 for root pages, +1 per ancestor below root (for select indent).
+   */
+  private static computePageDepth(page: Page, pagesMap: Map<string, Page>): number {
+    let depth = 0;
+    let cur: Page | undefined = page;
+
+    while (cur?._parent && !isEqualIds(cur._parent, '0' as EntityId)) {
+      depth++;
+      cur = pagesMap.get(cur._parent.toString());
+    }
+
+    return depth;
+  }
+
+  /**
+   * Ordered pages for the parent `<select>` with visual nesting (indent = depth).
+   *
+   * @param excludePageId - when editing, exclude this page and its descendants (same as groupByParent)
+   */
+  public static async getParentSelectOptions(
+    excludePageId?: EntityId
+  ): Promise<Array<{ page: Page; depth: number; indent: string }>> {
+    const pages = excludePageId
+      ? await this.groupByParent(excludePageId)
+      : await this.groupByParent();
+    const pagesMap = await this.getPagesMap();
+    const indentUnit = '\u00a0\u00a0';
+
+    return pages.map((page) => {
+      const depth = Pages.computePageDepth(page, pagesMap);
+
+      return { page, depth, indent: indentUnit.repeat(depth) };
+    });
+  }
+
   /**
    * Group all pages by their parents
    * If the pageId is passed, it excludes passed page from result pages

src/backend/models/pagesFlatArray.ts

@@ -51,7 +51,8 @@ class PagesFlatArray {
   /**
    * Returns pages flat array
    *
-   * @param nestingLimit - number of flat array nesting, set null to dismiss the restriction, default nesting 2
+   * @param nestingLimit - max `level` to keep (level 0 = root pages, 1 = their children, …).
+   * Pass **null** to return the full tree order (needed for prev/next links past depth 2).
    * @returns {Promise<Array<PagesFlatArrayData>>}
    */
   public static async get(nestingLimit: number | null = 2): Promise<Array<PagesFlatArrayData>> {
@@ -108,7 +109,8 @@ class PagesFlatArray {
    * @returns {Promise<PagesFlatArrayData | undefined>}
    */
   public static async getPageBefore(pageId: EntityId): Promise<PagesFlatArrayData | undefined> {
-    const arr = await this.get();
+    /** `null` = no level cap; default (2) would drop pages at level ≥2 from the chain */
+    const arr = await this.get(null);
 
     const pageIndex = arr.findIndex((item) => isEqualIds(item.id, pageId));
 
@@ -128,7 +130,7 @@ class PagesFlatArray {
    * @returns {Promise<PagesFlatArrayData | undefined>}
    */
   public static async getPageAfter(pageId: EntityId): Promise<PagesFlatArrayData | undefined> {
-    const arr = await this.get();
+    const arr = await this.get(null);
 
     const pageIndex = arr.findIndex( (item) => isEqualIds(item.id, pageId));
 

src/backend/routes/index.ts

@@ -14,6 +14,6 @@ router.use('/', pagesMiddleware, home);
 router.use('/', pagesMiddleware, pages);
 router.use('/', pagesMiddleware, auth);
 router.use('/api', verifyToken, allowEdit, api);
-router.use('/', aliases);
+router.use('/', pagesMiddleware, aliases);
 
 export default router;

src/backend/routes/middlewares/pages.ts

@@ -25,7 +25,7 @@ export default asyncMiddleware(async (req: Request, res: Response, next: NextFun
     const pages = await Pages.getAllPages();
     const pagesOrder = await PagesOrder.getAll();
 
-    res.locals.menu = createMenuTree(parentIdOfRootPages, pages, pagesOrder, 2);
+    res.locals.menu = createMenuTree(parentIdOfRootPages, pages, pagesOrder);
   } catch (error) {
     console.log('Can not load menu:', error);
   }

src/backend/routes/pages.ts

@@ -13,12 +13,10 @@ const router = express.Router();
  */
 router.get('/page/new', verifyToken, allowEdit, async (req: Request, res: Response, next: NextFunction) => {
   try {
-    const pagesAvailableGrouped = await Pages.groupByParent();
-
-    console.log(pagesAvailableGrouped);
+    const parentSelectOptions = await Pages.getParentSelectOptions();
 
     res.render('pages/form', {
-      pagesAvailableGrouped,
+      parentSelectOptions,
       page: null,
     });
   } catch (error) {
@@ -36,7 +34,7 @@ router.get('/page/edit/:id', verifyToken, allowEdit, async (req: Request, res: R
   try {
     const page = await Pages.get(pageId);
     const pagesAvailable = await Pages.getAllExceptChildren(pageId);
-    const pagesAvailableGrouped = await Pages.groupByParent(pageId);
+    const parentSelectOptions = await Pages.getParentSelectOptions(pageId);
 
     if (!page._parent) {
       throw new Error('Parent not found');
@@ -47,7 +45,7 @@ router.get('/page/edit/:id', verifyToken, allowEdit, async (req: Request, res: R
     res.render('pages/form', {
       page,
       parentsChildrenOrdered,
-      pagesAvailableGrouped,
+      parentSelectOptions,
     });
   } catch (error) {
     res.status(404);

src/backend/utils/menu.ts

@@ -3,17 +3,26 @@ import Page from '../models/page.js';
 import PageOrder from '../models/pageOrder.js';
 import { isEqualIds } from '../database/index.js';
 
+/** Max sidebar nesting depth (root sections count as depth 1). */
+const MENU_MAX_DEPTH = 64;
+
 /**
- * Process one-level pages list to parent-children list
+ * Build parent→children menu tree for the sidebar.
  *
  * @param parentPageId - parent page id
  * @param pages - list of all available pages
  * @param pagesOrder - list of pages order
- * @param level - max level recursion
- * @param currentLevel - current level of element
+ * @param maxDepth - stop recursing deeper than this (default: MENU_MAX_DEPTH)
+ * currentDepth - current depth from the tree root (1 = direct children of parentPageId)
  */
-export function createMenuTree(parentPageId: EntityId, pages: Page[], pagesOrder: PageOrder[], level = 1, currentLevel = 1): Page[] {
-  const childrenOrder = pagesOrder.find(order => isEqualIds(order.data.page, parentPageId));
+export function createMenuTree(
+  parentPageId: EntityId,
+  pages: Page[],
+  pagesOrder: PageOrder[],
+  maxDepth: number = MENU_MAX_DEPTH,
+  currentDepth: number = 1
+): Page[] {
+  const childrenOrder = pagesOrder.find((order) => isEqualIds(order.data.page, parentPageId));
 
   /**
    * branch is a page children in tree
@@ -31,19 +40,19 @@ export function createMenuTree(parentPageId: EntityId, pages: Page[], pagesOrder
   const unordered = pages.filter(page => isEqualIds(page._parent, parentPageId));
   const branch = Array.from(new Set([...ordered, ...unordered]));
 
-  /**
-   * stop recursion when we got the passed max level
-   */
-  if (currentLevel === level + 1) {
-    return [];
-  }
+  const canRecurse = currentDepth < maxDepth;
 
   /**
    * Each parents children can have subbranches
    */
-  return branch.filter(page => page && page._id).map(page => {
-    return Object.assign({
-      children: createMenuTree(page._id, pages, pagesOrder, level, currentLevel + 1),
-    }, page.data);
-  });
+  return branch
+    .filter((page) => page && page._id)
+    .map((page) => {
+      const subtree = canRecurse
+        ? createMenuTree(page._id!, pages, pagesOrder, maxDepth, currentDepth + 1)
+        : [];
+
+      /** `children` must win over anything stored on the page document */
+      return { ...page.data, children: subtree };
+    });
 }

src/backend/views/components/sidebar-section.twig

@@ -0,0 +1,26 @@
+{% set is_leaf = node.children is not defined or node.children is empty %}
+<section class="docs-sidebar__section{{ nested ? ' docs-sidebar__section--nested' : '' }}{{ is_leaf ? ' docs-sidebar__section--leaf' : '' }}" data-id="{{ node._id }}">
+  <a class="docs-sidebar__section-title-wrapper"
+    href="{{ node.uri ? '/' ~ node.uri : '/page/' ~ node._id }}"
+  >
+    <div class="docs-sidebar__section-title {{ page is defined and toString(page._id) == toString(node._id) ? 'docs-sidebar__section-title--active' : '' }}">
+      <span>
+        {{ node.title | striptags }}
+      </span>
+      {% if node.children is defined and node.children is not empty %}
+        <button type="button" class="docs-sidebar__section-toggler" aria-label="Toggle section">
+          {{ svg('arrow-up') }}
+        </button>
+      {% endif %}
+    </div>
+  </a>
+  {% if node.children is defined and node.children is not empty %}
+    <ul class="docs-sidebar__section-list docs-sidebar__section-list--nested">
+      {% for child in node.children %}
+        <li>
+          {% include 'components/sidebar-section.twig' with { node: child, nested: true } %}
+        </li>
+      {% endfor %}
+    </ul>
+  {% endif %}
+</section>

src/backend/views/components/sidebar.twig

@@ -10,37 +10,7 @@
 	    <input class="docs-sidebar__search" type="text" placeholder="Search" />
 	  </span>
     {% for firstLevelPage in menu %}
-      <section class="docs-sidebar__section" data-id="{{firstLevelPage._id}}">
-        <a class="docs-sidebar__section-title-wrapper"
-          href="{{firstLevelPage.uri ? '/' ~ firstLevelPage.uri : '/page/' ~ firstLevelPage._id }}"
-        >
-        <div class="docs-sidebar__section-title {{page is defined and page._id == firstLevelPage._id ? 'docs-sidebar__section-title--active' : ''}}">
-          <span>
-            {{ firstLevelPage.title | striptags }}
-          </span>
-          {% if firstLevelPage.children is not empty %}
-            <button class="docs-sidebar__section-toggler">
-              {{ svg('arrow-up') }}
-            </button>
-          {% endif %}
-        </div>
-        </a>
-        {% if firstLevelPage.children is not empty %}
-          <ul class="docs-sidebar__section-list">
-            {% for child in firstLevelPage.children %}
-              <li>
-                <a
-                  class="docs-sidebar__section-list-item-wrapper"
-                  href="{{ child.uri ? '/' ~ child.uri : '/page/' ~ child._id }}">
-                    <div class="docs-sidebar__section-list-item {{page is defined and toString(page._id) == toString(child._id) ? 'docs-sidebar__section-list-item--active' : ''}}">
-                      <span>{{ child.title | striptags }}</span>
-                    </div>
-                </a>
-              </li>
-            {% endfor %}
-          </ul>
-        {% endif %}
-      </section>
+      {% include 'components/sidebar-section.twig' with { node: firstLevelPage, nested: false } %}
     {% endfor %}
 
     <div class="docs-sidebar__logo">

src/backend/views/pages/form.twig

@@ -26,14 +26,11 @@
           {% endif %}
           <select id="parent" name="parent">
             <option value="0">Root</option>
-            {% for _page in pagesAvailableGrouped %}
+            {% for entry in parentSelectOptions %}
+              {% set _page = entry.page %}
               {% if toString(_page._id) != toString(currentPageId) %}
                 <option value="{{ toString(_page._id) }}" {{ page is not empty and toString(page._parent) == toString(_page._id) ? 'selected' : ''}}>
-                  {% if _page._parent != "0" %}
-                    &nbsp;
-                    &nbsp;
-                  {% endif %}
-                  {{ _page.title }}
+                  {{- entry.indent -}}{{- _page.title -}}
                 </option>
               {% endif %}
             {% endfor %}