feat(new tool): pdf signature checker (#745)

src/tools/pdf-signature-checker/pdf-signature-checker.vue

@@ -0,0 +1,59 @@
+<script setup lang="ts">
+import verifyPDF from 'pdf-signature-reader';
+import type { SignatureInfo } from './pdf-signature-checker.types';
+import { formatBytes } from '@/utils/convert';
+
+const signatures = ref<SignatureInfo[]>([]);
+const status = ref<'idle' | 'parsed' | 'error' | 'loading'>('idle');
+const file = ref<File | null>(null);
+
+async function onVerifyClicked(uploadedFile: File) {
+  file.value = uploadedFile;
+  const fileBuffer = await uploadedFile.arrayBuffer();
+
+  status.value = 'loading';
+  try {
+    const { signatures: parsedSignatures } = verifyPDF(fileBuffer);
+    signatures.value = parsedSignatures;
+    status.value = 'parsed';
+  }
+  catch (e) {
+    signatures.value = [];
+    status.value = 'error';
+  }
+}
+</script>
+
+<template>
+  <div style="flex: 0 0 100%">
+    <div mx-auto max-w-600px>
+      <c-file-upload title="Drag and drop a PDF file here, or click to select a file" accept=".pdf" @file-upload="onVerifyClicked" />
+
+      <c-card v-if="file" mt-4 flex gap-2>
+        <div font-bold>
+          {{ file.name }}
+        </div>
+
+        <div>
+          {{ formatBytes(file.size) }}
+        </div>
+      </c-card>
+
+      <div v-if="status === 'error'">
+        <c-alert mt-4>
+          No signatures found in the provided file.
+        </c-alert>
+      </div>
+    </div>
+  </div>
+
+  <div v-if="status === 'parsed' && signatures.length" style="flex: 0 0 100%" mt-5 flex flex-col gap-4>
+    <div v-for="(signature, index) of signatures" :key="index">
+      <div mb-2 font-bold>
+        Signature {{ index + 1 }} certificates :
+      </div>
+
+      <pdf-signature-details :signature="signature" />
+    </div>
+  </div>
+</template>