From 4a2b78c869b12731a7346d415e580ae14d279820 Mon Sep 17 00:00:00 2001
From: maxlkatze <git@cubedpixels.net>
Date: Thu, 25 Jul 2024 13:24:28 +0200
Subject: [PATCH] feat(katzencore): Removed Any DOM Parser and Wrote own
 implementation

---
 package.json                                |   8 +-
 src/module.ts                               |   2 -
 src/runtime/components/ui/KatzeRichText.vue | 146 +++++++++++++++++---
 3 files changed, 131 insertions(+), 25 deletions(-)

diff --git a/package.json b/package.json
index 2c9caee..fb8afda 100644
--- a/package.json
+++ b/package.json
@@ -30,16 +30,14 @@
     "test:types": "vue-tsc --noEmit && cd playground && vue-tsc --noEmit"
   },
   "dependencies": {
-    "@nuxt/image": "1.7.0",
-    "@nuxtjs/tailwindcss": "6.12.1",
-    "@pinia/nuxt": "^0.5.2-beta.0",
+    "@nuxtjs/tailwindcss": "^6.12.1",
+    "@pinia/nuxt": "^0.5.1",
     "@tiptap/extension-highlight": "^2.5.2",
     "@tiptap/extension-placeholder": "^2.5.1",
     "@tiptap/pm": "^2.5.1",
     "@tiptap/starter-kit": "^2.5.1",
     "@tiptap/vue-3": "^2.5.1",
-    "node-html-parser": "^6.1.13",
-    "pinia": "^2.1.8-beta.0"
+    "pinia": "^2.1.7"
   },
   "overrides": {
     "vue": "latest",
diff --git a/src/module.ts b/src/module.ts
index 2251175..e28b7f2 100644
--- a/src/module.ts
+++ b/src/module.ts
@@ -96,8 +96,6 @@ export default defineNuxtModule<ModuleOptions>({
         },
       },
     })
-
-    await installModule('@nuxt/image')
     await installModule('@pinia/nuxt', {
       storesDirs: [
         './runtime/stores/**',
diff --git a/src/runtime/components/ui/KatzeRichText.vue b/src/runtime/components/ui/KatzeRichText.vue
index 3e19f15..314ecf1 100644
--- a/src/runtime/components/ui/KatzeRichText.vue
+++ b/src/runtime/components/ui/KatzeRichText.vue
@@ -1,42 +1,152 @@
 <script setup lang="ts">
-import { parse, type HTMLElement } from 'node-html-parser'
 import { onMounted, ref, watch } from '#imports'
 
 const props = defineProps({
   content: String,
 })
 
-const htmlElements = ref<HTMLElement[]>()
+interface Node {
+  type: string
+}
+
+interface ElementNode extends Node {
+  tag: string
+  nodes: Node[]
+}
+
+interface TextNode extends Node {
+  text: string
+}
+
+interface RecursiveElementNode extends ElementNode {
+  parent?: RecursiveElementNode
+}
+
+const parseIntoNodes = (html: string): Node[] => {
+  // loop through characters
+  const characters = html.split('')
+
+  let tagOpen = false
+  let tagEnd = false
+
+  let currentElementTag = ''
+  let currentTextContent = ''
+  let currentElement: RecursiveElementNode | undefined = undefined
+
+  const elementTree = []
+
+  for (let i = 0; i < characters.length; i++) {
+    const char = characters[i]
+
+    if (tagOpen) {
+      if (char === '/') {
+        tagEnd = true
+      }
+      else if (char === '>') {
+        tagOpen = false
+        if (tagEnd) {
+          // AN ELEMENT HAS ENDED
+          if (currentElement) {
+            currentElement = currentElement.parent
+          }
+        }
+        else {
+          // AN ELEMENT HAS STARTED
+          const parent: RecursiveElementNode | undefined = currentElement
+          currentElement = {
+            tag: currentElementTag,
+            nodes: [],
+            parent,
+            type: 'element',
+          }
+          if (parent) {
+            parent.nodes.push(currentElement)
+          }
+          else {
+            elementTree.push(currentElement)
+          }
+
+          if (currentElementTag === 'br') {
+            currentElement = parent
+            tagOpen = false
+          }
+        }
+      }
+      else {
+        currentElementTag += char
+      }
+      continue
+    }
+
+    if (char === '<') {
+      if (currentTextContent) {
+        // A TEXT NODE HAS ENDED
+        const textNode: TextNode = {
+          text: currentTextContent,
+          type: 'text',
+        }
+        currentTextContent = ''
+        if (currentElement) {
+          currentElement.nodes.push(textNode)
+        }
+        else {
+          elementTree.push(textNode)
+        }
+      }
+      currentElementTag = ''
+      tagOpen = true
+      tagEnd = false
+
+      continue
+    }
+
+    currentTextContent += char
+  }
+
+  return elementTree
+}
+
+const nodesToHtml = (nodes: Node[]): string => {
+  let html = ''
+  for (const node of nodes) {
+    if (node.type === 'element') {
+      const element = node as ElementNode
+      html += `<${element.tag}>${nodesToHtml(element.nodes)}</${element.tag}>`
+    }
+    else if (node.type === 'text') {
+      const text = node as TextNode
+      html += text.text
+    }
+  }
+  return html
+}
+
+const parsedNodes = ref<Node[]>(parseIntoNodes(props.content || ''))
 
 onMounted(() => {
-  updateHtmlElements(props.content || '')
+  parsedNodes.value = parseIntoNodes(props.content || '')
 })
 
 watch(() => props.content, (content) => {
-  updateHtmlElements(content || '')
+  parsedNodes.value = parseIntoNodes(content || '')
 })
 
-const updateHtmlElements = (content: string) => {
-  if (!content) return
-  const parsedContent = parse(content)
-  htmlElements.value = parsedContent.childNodes as HTMLElement[]
-}
-
-updateHtmlElements(props.content || '')
-
-const getElementTag = (element: HTMLElement) => {
-  return element.rawTagName
+const getElementTag = (element: Node) => {
+  if (element.type === 'element') {
+    return (element as ElementNode).tag
+  }
+  return 'span'
 }
-const getElementContent = (element: HTMLElement) => {
-  return element.innerHTML
+const getElementContent = (element: Node) => {
+  return element.type === 'element' ? nodesToHtml((element as ElementNode).nodes) : ''
 }
 </script>
 
 <template>
   <component
     :is="getElementTag(element)"
-    v-for="(element, index) in htmlElements"
-    :key="index+element.rawTagName"
+    v-for="(element, index) in parsedNodes"
+    :key="index+element.type"
     v-hypertext="getElementContent(element)"
   />
 </template>