Create uploadAndMergePDFs.gs

Add Google Apps Script sample code for merging PDFs

Google Apps Script/Advanced Integrations/Merge PDFs/uploadAndMergePDFs.gs

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+function uploadAndMergePDFs(pdfFiles) {
+  // Replace with your actual API key
+  const apiKey = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
+
+  const uploadUrl = "https://api.pdfrest.com/upload";
+  const mergeUrl = "https://api.pdfrest.com/merged-pdf";
+
+  const uploadedFiles = [];
+
+  const pagesArr = [];
+  const typeArr = [];
+
+  // Upload each PDF file
+  for (const pdfFile of pdfFiles) {
+    const uploadData = pdfFile.getBlob().getBytes();
+    const uploadOptions = {
+      "method" : "post",
+      "payload" : uploadData,
+      "headers" : {
+        "Api-Key": apiKey,
+        "Content-Filename": pdfFile.getName(),
+        "Content-Type": "application/octet-stream"
+      }
+    };
+
+    const uploadResponse = UrlFetchApp.fetch(uploadUrl, uploadOptions);
+    if (uploadResponse.getResponseCode() !== 200) {
+      throw new Error(`Failed to upload file: ${uploadResponse.getContentText()}`);
+    }
+
+    uploadedFiles.push(JSON.parse(uploadResponse.getContentText()).files[0].id);
+    pagesArr.push("1-last");
+    typeArr.push("id");
+  }
+
+  // Wait for all uploads to complete
+  uploadedFiles.forEach(fileId => waitForUploadCompletion(fileId));
+
+
+  // Prepare merge request data
+  const mergeData = {
+    "id": uploadedFiles,
+    "type": typeArr,
+    "pages": pagesArr,
+  };
+
+  const mergeOptions = {
+    "method" : "post",
+    "payload" : JSON.stringify(mergeData),
+    "headers" : {
+      "Api-Key": apiKey,
+      "Content-Type": "application/json"
+    }
+  };
+
+  const mergeResponse = UrlFetchApp.fetch(mergeUrl, mergeOptions);
+  if (mergeResponse.getResponseCode() !== 200) {
+    throw new Error(`Failed to merge PDFs: ${mergeResponse.getContentText()}`);
+  }
+
+  console.log("PDFs merged successfully!");
+
+  // You can access the response data here:
+  const mergedPdfInfo = JSON.parse(mergeResponse.getContentText());
+
+  return (mergedPdfInfo.outputId);
+}
+
+function checkUploadStatus(fileId) {
+    const options = {
+      "method": "get",
+    };
+    const response = UrlFetchApp.fetch(`https://api.pdfrest.com/resource/${fileId}?format=info`, options);
+    const data = JSON.parse(response.getContentText());
+    return data.size > 0;
+}
+
+function waitForUploadCompletion(fileId) {
+  while (!checkUploadStatus(fileId)) {
+    Utilities.sleep(1000); // Wait 1 second before checking again
+  }
+}
+
+function getFile(fileId, folderId) {
+  const options = {
+    "method": "get",
+    "responseType": UrlFetchApp.BLOB, // Specify response type as blob
+  };
+  const response = UrlFetchApp.fetch(`https://api.pdfrest.com/resource/${fileId}?format=file`, options);
+  const pdfBlob = response.getBlob(); // Directly get the blob from the response
+  const folder = DriveApp.getFolderById(folderId);
+  const result = folder.createFile(pdfBlob);
+  console.log("Merged PDF downloaded!");
+}
+
+// Example usage - merge all PDFs in Google Drive folder
+const folderId = "xxxxx-xxxxxx-xxxxxxxx_xxxxxxxxxxx"; // Replace with the ID of your target folder
+const folder = DriveApp.getFolderById(folderId);
+const files = folder.getFiles();
+
+const pdfFiles = [];
+while (files.hasNext()) {
+  const file = files.next();
+  if (file.getMimeType() === MimeType.PDF) {
+    pdfFiles.push(file);
+  }
+}
+
+const outputId = uploadAndMergePDFs(pdfFiles);
+
+getFile(outputId,folderId);