import StarterKit from '@tiptap/starter-kit';
import Link from '@tiptap/extension-link';
import Placeholder from '@tiptap/extension-placeholder';
import type { AnyExtension } from '@tiptap/core';

export interface BuildExtensionsOptions {
  /** Placeholder text shown when the doc is empty. */
  placeholder?: string;
  /** Extra extensions to append (e.g. a configured Mention or SlashCommands). */
  extra?: AnyExtension[];
}

/**
 * The canonical extension set shared by `<RichTextEditor>` and
 * `<RichTextViewer>` — keeping them in sync guarantees that serialised HTML
 * matches what the editor produced.
 */
export function buildExtensions(options: BuildExtensionsOptions = {}): AnyExtension[] {
  const { placeholder = 'Write something…', extra = [] } = options;
  return [
    StarterKit.configure({ link: false }),
    Link.configure({ openOnClick: false, autolink: true }),
    Placeholder.configure({ placeholder }),
    ...extra,
  ];
}