Refactor for i18n, CMS integration, and project slugs; enhance admin & analytics

Co-authored-by: dennis <dennis@konkol.net>

lib/richtext.ts

@@ -0,0 +1,71 @@
+import sanitizeHtml from "sanitize-html";
+import type { JSONContent } from "@tiptap/react";
+import { generateHTML } from "@tiptap/html";
+import StarterKit from "@tiptap/starter-kit";
+import Underline from "@tiptap/extension-underline";
+import Link from "@tiptap/extension-link";
+import { TextStyle } from "@tiptap/extension-text-style";
+import Color from "@tiptap/extension-color";
+import Highlight from "@tiptap/extension-highlight";
+import { FontFamily } from "@/lib/tiptap/fontFamily";
+
+export function richTextToSafeHtml(doc: JSONContent): string {
+  const raw = generateHTML(doc, [
+    StarterKit,
+    Underline,
+    Link.configure({
+      openOnClick: false,
+      autolink: false,
+      HTMLAttributes: { rel: "noopener noreferrer", target: "_blank" },
+    }),
+    TextStyle,
+    FontFamily,
+    Color,
+    Highlight,
+  ]);
+
+  return sanitizeHtml(raw, {
+    allowedTags: [
+      "p",
+      "br",
+      "h1",
+      "h2",
+      "h3",
+      "blockquote",
+      "strong",
+      "em",
+      "u",
+      "a",
+      "ul",
+      "ol",
+      "li",
+      "code",
+      "pre",
+      "span"
+    ],
+    allowedAttributes: {
+      a: ["href", "rel", "target"],
+      span: ["style"],
+      code: ["class"],
+      pre: ["class"],
+      p: ["class"],
+      h1: ["class"],
+      h2: ["class"],
+      h3: ["class"],
+      blockquote: ["class"],
+      ul: ["class"],
+      ol: ["class"],
+      li: ["class"]
+    },
+    allowedSchemes: ["http", "https", "mailto"],
+    allowProtocolRelative: false,
+    allowedStyles: {
+      span: {
+        color: [/^#[0-9a-fA-F]{3,8}$/],
+        "background-color": [/^#[0-9a-fA-F]{3,8}$/],
+        "font-family": [/^(Inter|ui-sans-serif|ui-serif|ui-monospace)$/],
+      },
+    },
+  });
+}
+