Prompt Title: PDF Payslip Extraction

Building such a system involves several steps and requires combining multiple libraries. For brevity, I'll outline a simplified version that demonstrates the core concept.

Let's break the task into parts:

1. Split the PDF into individual pages: For this, you can use the pdf-lib package.

2. Extract text from each page: You can use the pdf-parse package.

3. Extract phone numbers and names from the text: Regular expressions will help here.

4. Send an email with extracted information: Use the nodemailer package.

Here's a simplified outline with sample code:

1. Setting up:

First, install the necessary packages:

bashCopy code
npm install pdf-lib pdf-parse nodemailer
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2. Code:

javascriptCopy code
const { PDFDocument } = require('pdf-lib');
const pdf = require('pdf-parse');
const nodemailer = require('nodemailer');

async function extractDataFromPDF(buffer) {
  let data = await pdf(buffer);

  // Using a basic regular expression for demonstration purposes
  let phoneRegex = /(\+?\d{1,3}?[-.\s]?)?(\d{2,4}[-.\s]?\d{2,4}[-.\s]?\d{2,4})/g;
  let nameRegex = /Name:\s*([A-Za-z\s]+)/;  // Assumes format: "Name: John Doe"

  let phone = data.text.match(phoneRegex);
  let nameMatch = data.text.match(nameRegex);

  let name = nameMatch && nameMatch[1];

  return { phone, name };
}

async function sendEmail(details) {
  let transporter = nodemailer.createTransport({
    // Replace with your email configuration
    service: 'gmail',
    auth: {
      user: '[email protected]',
      pass: 'YOUR_PASSWORD'
    }
  });

  let mailOptions = {
    from: '[email protected]',
    to: '[email protected]',
    subject: 'Payslip Details',
    text: `Name: ${details.name}, Phone: ${details.phone}`
  };

  transporter.sendMail(mailOptions);
}

async function processPDF(pdfBuffer) {
  const pdfDoc = await PDFDocument.load(pdfBuffer);
  const pageCount = pdfDoc.getPageCount();

  for (let i = 0; i < pageCount; i++) {
    const [page] = await pdfDoc.copyPages(pdfDoc, [i]);
    const singlePageDoc = await PDFDocument.create();
    singlePageDoc.addPage(page);
    
    const pageBuffer = await singlePageDoc.save();
    const details = await extractDataFromPDF(pageBuffer);

    // Send email with the extracted details
    await sendEmail(details);
  }
}

// Load the PDF and begin processing
const fs = require('fs');
fs.readFile('./path_to_your_pdf.pdf', async (err, data) => {
  if (err) throw err;

  await processPDF(data);
});
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Remember:

• Replace placeholders (YOUR_EMAIL, YOUR_PASSWORD, RECIPIENT_EMAIL, and ./path_to_your_pdf.pdf) with your actual values.

• The regex patterns for extracting phone numbers and names are quite basic. In a real-world scenario, you'd need more robust patterns or other techniques to ensure accurate extraction.

• Handling emails in this way exposes your email/password. In production, you'd want a safer mechanism, like OAuth2 authentication or using an email service API.

• To avoid getting blocked or flagged by Gmail, consider using a dedicated email sending service like SendGrid or Mailgun.

• Make sure you have permission to process and email personal data. Handling sensitive data has legal implications (e.g., GDPR, CCPA), so ensure compliance with all relevant regulations.