Upload a PDF to a sales order programmatically

import { readFile } from 'node:fs/promises';

const GRAPHQL_URL = process.env.BONX_GRAPHQL_URL;
const API_KEY = process.env.BONX_API_KEY;
const PDF_CONTENT_TYPE = 'application/pdf';

async function graphql(query, variables) {
  const response = await fetch(GRAPHQL_URL, {
    method: 'POST',
    headers: {
      'x-api-key': API_KEY,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({ query, variables }),
  });

  if (!response.ok) {
    throw new Error(`GraphQL HTTP error: ${response.status}`);
  }

  const result = await response.json();
  if (result.errors) {
    throw new Error(JSON.stringify(result.errors));
  }

  return result.data;
}

async function uploadPdfToSalesOrder({ salesOrderId, filePath, fileName }) {
  const pdf = await readFile(filePath);

  // 1. Request a temporary upload URL
  const { generatePresignedUrlUpload: upload } = await graphql(
    `
      mutation CreateUploadUrl($fileName: String!, $contentType: String) {
        generatePresignedUrlUpload(fileName: $fileName, contentType: $contentType) {
          uploadUrl
          fileName
        }
      }
    `,
    { fileName, contentType: PDF_CONTENT_TYPE },
  );

  // 2. Send the PDF to this URL
  const uploadResponse = await fetch(upload.uploadUrl, {
    method: 'PUT',
    headers: { 'Content-Type': PDF_CONTENT_TYPE },
    body: pdf,
  });

  if (!uploadResponse.ok) {
    throw new Error(`PDF upload failed: ${uploadResponse.status}`);
  }

  // 3. Link the file to the sales order
  const { insertFilesOne: file } = await graphql(
    `
      mutation AttachFile($fileId: String!, $name: String!, $size: Int!, $recordId: Int!) {
        insertFilesOne(
          object: {
            fileId: $fileId
            name: $name
            contentType: "application/pdf"
            size: $size
            recordId: $recordId
            recordType: "salesOrders"
          }
        ) {
          id
        }
      }
    `,
    {
      fileId: upload.fileName,
      name: fileName,
      size: pdf.length,
      recordId: salesOrderId,
    },
  );

  return file;
}

const file = await uploadPdfToSalesOrder({
  salesOrderId: 42,
  filePath: './customer-purchase-order.pdf',
  fileName: 'Customer purchase order.pdf',
});

console.log('PDF added:', file.id);