feat: playground add submenu

src/utils/pdf-reader.ts

@@ -0,0 +1,48 @@
+import * as pdfjsLib from 'pdfjs-dist';
+
+pdfjsLib.GlobalWorkerOptions.workerSrc = new URL(
+  'pdfjs-dist/build/pdf.worker.mjs',
+  // @ts-ignore
+  import.meta.url
+).href;
+
+const readPDFContent = (file: File): Promise<string> => {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onload = async function (e: any) {
+      try {
+        const arrayBuffer = e.target.result;
+        const loadingTask = pdfjsLib.getDocument({ data: arrayBuffer });
+
+        const pdf = await loadingTask.promise;
+        const numPages = pdf.numPages;
+
+        const pagePromises = [];
+
+        for (let i = 1; i <= numPages; i++) {
+          const pagePromise = pdf.getPage(i).then(function (page) {
+            return page.getTextContent().then(function (textContent) {
+              return textContent.items
+                .map(function (item: any) {
+                  return item.str;
+                })
+                .join(' ');
+            });
+          });
+          pagePromises.push(pagePromise);
+        }
+
+        const pageTexts = await Promise.all(pagePromises);
+        const result = pageTexts?.join(' ');
+        resolve(result);
+      } catch (error) {
+        reject(error);
+      }
+    };
+
+    reader.onerror = (error) => reject(error);
+    reader.readAsArrayBuffer(file);
+  });
+};
+
+export default readPDFContent;