From ad7fee9ad6d9235e366388014e1ea167dc26bfd8 Mon Sep 17 00:00:00 2001
From: Anton Tranelis <mail@antontranelis.de>
Date: Wed, 9 Jul 2025 10:24:06 +0200
Subject: [PATCH] added hashtags

---
 .../ItemPopupComponents/TextPreview.tsx       | 99 +++++++++++++++++--
 1 file changed, 89 insertions(+), 10 deletions(-)

diff --git a/lib/src/Components/Map/Subcomponents/ItemPopupComponents/TextPreview.tsx b/lib/src/Components/Map/Subcomponents/ItemPopupComponents/TextPreview.tsx
index 33bfd868..71acb997 100644
--- a/lib/src/Components/Map/Subcomponents/ItemPopupComponents/TextPreview.tsx
+++ b/lib/src/Components/Map/Subcomponents/ItemPopupComponents/TextPreview.tsx
@@ -1,19 +1,98 @@
-import { RichTextEditor } from '#components/Input/RichTextEditor/RichTextEditor'
-import { fixUrls, mailRegex } from '#utils/ReplaceURLs'
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+import truncate from 'markdown-truncate'
+import Markdown from 'react-markdown'
+import rehypeRaw from 'rehype-raw'
+import remarkBreaks from 'remark-breaks'
+import remarkGfm from 'remark-gfm'
+
+import { useAddFilterTag } from '#components/Map/hooks/useFilter'
+import { useGetItemTags, useTags } from '#components/Map/hooks/useTags'
+import { decodeTag } from '#utils/FormatTags'
 
 import type { Item } from '#types/Item'
 
 export const TextPreview = ({ item }: { item: Item }) => {
-  let replacedText = ''
+  const getItemTags = useGetItemTags()
 
   if (!item.text) return null
-  else replacedText = fixUrls(item.text)
+  // Text auf ~100 Zeichen stutzen (inkl. Ellipse „…“)
+  const previewRaw = truncate(
+    removeGfmTables(convertImgTagsToMarkdown(removeMentionSpans(removeHashtags(item.text)))),
+    {
+      limit: 150,
+      ellipsis: true,
+    },
+  ) as string
 
-  if (replacedText) {
-    replacedText = replacedText.replace(mailRegex, (url) => {
-      return `[${url}](mailto:${url})`
-    })
-  }
+  const withExtraHashes = previewRaw.replace(
+    /^(#{1,6})\s/gm,
+    (_match: string, hashes: string): string => `${hashes}## `,
+  )
 
-  return <RichTextEditor defaultValue={replacedText} readOnly={true} />
+  return (
+    <div className='markdown'>
+      <Markdown remarkPlugins={[remarkBreaks, remarkGfm]} rehypePlugins={[rehypeRaw]}>
+        {withExtraHashes}
+      </Markdown>
+      {getItemTags(item).map((tag) => (
+        <HashTag tag={tag} key={tag} />
+      ))}
+    </div>
+  )
+}
+
+export const HashTag = ({ tag }: { tag: Tag }) => {
+  const tags = useTags()
+  const t = tags.find((t) => t.name.toLocaleLowerCase() === tag.name.toLocaleLowerCase())
+  const addFilterTag = useAddFilterTag()
+  if (!t) return null
+  return (
+    <a
+      className='hashtag'
+      style={{ color: t.color }}
+      key={`${t.name}`}
+      onClick={(e) => {
+        e.stopPropagation()
+        addFilterTag(t)
+      }}
+    >
+      {`#${decodeTag(tag.name)} `}
+    </a>
+  )
+}
+
+export function removeMentionSpans(html: string): string {
+  const mentionSpanRegex =
+    /<span\b(?=[^>]*\bdata-type="mention")(?=[^>]*\bclass="mention")[^>]*>[\s\S]*?<\/span>/gi
+  return html.replace(mentionSpanRegex, '')
+}
+
+export function removeHashtags(input: string): string {
+  const hashtagRegex = /(^|\s)(?!#{1,6}\s)(#[A-Za-z0-9_]+)\b/g
+  return input.replace(hashtagRegex, '$1').trim()
+}
+
+export function convertImgTagsToMarkdown(input: string): string {
+  return input.replace(/<img\s+[^>]*>/gi, (imgTag) => {
+    const srcMatch = imgTag.match(/src\s*=\s*"([^"]+)"/i)
+    if (!srcMatch) {
+      return imgTag
+    }
+    const src = srcMatch[1]
+
+    const altMatch = imgTag.match(/alt\s*=\s*"([^"]*)"/i)
+    const alt = altMatch ? altMatch[1] : ''
+
+    const titleMatch = imgTag.match(/title\s*=\s*"([^"]*)"/i)
+    const title = titleMatch ? titleMatch[1] : ''
+
+    return `![${alt}](${src}${title ? ` "${title}"` : ''})`
+  })
+}
+
+export function removeGfmTables(input: string): string {
+  const gfmTableRegex =
+    // eslint-disable-next-line security/detect-unsafe-regex
+    /^[ \t]*\|.*\|.*\r?\n^[ \t]*\|[ \t\-:|]+\r?\n(?:^[ \t]*\|.*\|.*(?:\r?\n|$))*/gm
+  return input.replace(gfmTableRegex, '')
 }