Wiki navigation bar

lib/Helper/WikiTree.php

@@ -0,0 +1,83 @@
+<?php
+namespace OCA\MyWiki\Helper;
+
+class WikiTree {
+    private array $wikiPages;
+
+    public function __construct(?array $wikiPages) {
+        $this->wikiPages = $wikiPages??[];
+    }
+
+    public function getWikiPages(): array {
+        return $this->wikiPages;
+    }
+
+    public function get($id): ?WikiTreePage {
+        $wikiTreePage = null;
+        foreach($this->wikiPages as $page) {
+            if ( $page['id']==$id) {
+                $wikiTreePage = new WikiTreePage();
+                $wikiTreePage->id = $page['id'];
+                $wikiTreePage->pid = $page['pid'];
+                $wikiTreePage->title = $page['title'];
+                $wikiTreePage->sort = $page['sort'];
+                break;
+            }
+        }
+        return $wikiTreePage;
+    }
+
+    private function countChilds($id): int {
+        $n = 0;
+        foreach($this->wikiPages as $page) {
+            if ($page['pid']==$id) {
+                $n++;
+            }
+        }
+        return $n;
+    }
+
+    public function set(WikiTreePage $wikiTreePage): WikiTree {
+        if ( $this->get($wikiTreePage->id) === null ) {
+            $this->add($wikiTreePage);
+        } else {
+            $this->modify($wikiTreePage);
+        }
+        return $this;
+    }
+
+    private function add(WikiTreePage $wikiTreePage): WikiTree {
+        if ($wikiTreePage->sort<=0) {
+            $wikiTreePage->sort = $this->countChilds($wikiTreePage->pid) + 1;
+        }
+        $this->wikiPages[] = [
+            "id"=>$wikiTreePage->id,
+            "pid"=>$wikiTreePage->pid,
+            "title"=>$wikiTreePage->title,
+            "sort"=>$wikiTreePage->sort
+        ];
+        return $this;
+    }
+
+    private function modify(WikiTreePage $wikiTreePage): WikiTree {
+        foreach($this->wikiPages as &$page) {
+            if ( $page['id']==$wikiTreePage->id) {
+                $page['pid'] = $wikiTreePage->pid;
+                $page['title'] = $wikiTreePage->title;
+                $page['sort'] = $wikiTreePage->sort;
+            }
+        }
+        return $this;
+    }
+
+    public function del($id): ?WikiTree {
+        $pages = [];
+        foreach($this->wikiPages as $k => $page) {
+            if ($page['id']!=$id && $page['pid']!=$id) {
+                $pages[] = $page;
+            }
+        }
+        $this->wikiPages = $pages;
+        return $this;
+    }
+}

lib/Helper/WikiTreePage.php

@@ -0,0 +1,9 @@
+<?php
+namespace OCA\MyWiki\Helper;
+
+class WikiTreePage {
+    public int $id;
+    public int $pid;
+    public string $title;
+    public int $sort = 0;
+}