Add basic functionality

src/App.vue

@@ -1,11 +1,120 @@
-<script setup lang="ts"></script>
-
 <template>
-  <h1>You did it!</h1>
-  <p>
-    Visit <a href="https://vuejs.org/" target="_blank" rel="noopener">vuejs.org</a> to read the
-    documentation
-  </p>
+  <div class="csv-clipboard">
+    <label class="upload-label" for="csvInput">
+      CSV-Datei auswählen
+      <input
+        id="csvInput"
+        type="file"
+        accept=".csv"
+        @change="handleFileChange"
+        class="hidden-input"
+      />
+    </label>
+
+    <button v-if="parsedRows" @click="copyToClipboard" class="copy-button">
+      In Zwischenablage kopieren
+    </button>
+
+    <p v-if="status === 'success'" class="status success">✅ Kopiert!</p>
+    <p v-else-if="status === 'error'" class="status error">❌ {{ errorMessage }}</p>
+  </div>
 </template>
 
-<style scoped></style>
+<script setup>
+import { ref } from 'vue'
+
+const parsedRows = ref(null)
+const status = ref(null)
+const errorMessage = ref('')
+
+async function handleFileChange(event) {
+  status.value = null
+  const file = event.target.files[0]
+  if (!file) return
+
+  const text = await file.text()
+  parsedRows.value = parseCSV(text)
+  event.target.value = ''
+}
+
+async function copyToClipboard() {
+  if (!parsedRows.value) return
+
+  const html = buildHtmlTable(parsedRows.value)
+  const plain = parsedRows.value.map((r) => r.join('\t')).join('\n')
+
+  try {
+    await navigator.clipboard.write([
+      new ClipboardItem({
+        'text/plain': new Blob([plain], { type: 'text/plain' }),
+      }),
+    ])
+    status.value = 'success'
+  } catch (err) {
+    console.error('Kopieren fehlgeschlagen:', err)
+    status.value = 'error'
+    errorMessage.value = 'Kopieren fehlgeschlagen – bitte erneut versuchen.'
+    errorMessage.value = `${err.name}: ${err.message}`
+  }
+}
+
+function parseCSV(text) {
+  const rows = []
+  let row = []
+  let field = ''
+  let insideQuotes = false
+
+  for (let i = 0; i < text.length; i++) {
+    const char = text[i]
+    const next = text[i + 1]
+
+    if (insideQuotes) {
+      if (char === '"' && next === '"') {
+        field += '"'
+        i++
+      } else if (char === '"') {
+        insideQuotes = false
+      } else {
+        field += char
+      }
+    } else {
+      if (char === '"') {
+        insideQuotes = true
+      } else if (char === ',') {
+        row.push(field)
+        field = ''
+      } else if (char === '\n' || char === '\r') {
+        if (field.length > 0 || row.length > 0) {
+          row.push(field)
+          rows.push(row)
+          row = []
+          field = ''
+        }
+        if (char === '\r' && next === '\n') i++
+      } else {
+        field += char
+      }
+    }
+  }
+  if (field.length > 0 || row.length > 0) {
+    row.push(field)
+    rows.push(row)
+  }
+  return rows
+}
+
+function buildHtmlTable(rows) {
+  const trs = rows
+    .map((r, i) => {
+      const tag = i === 0 ? 'th' : 'td'
+      const cells = r.map((cell) => `<${tag}>${escapeHtml(cell)}</${tag}>`).join('')
+      return `<tr>${cells}</tr>`
+    })
+    .join('')
+  return `<table>${trs}</table>`
+}
+
+function escapeHtml(str) {
+  return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
+}
+</script>

test.csv

@@ -0,0 +1,3 @@
+1,2
+3,4
+5,6