146 lines
No EOL
4.6 KiB
JavaScript
146 lines
No EOL
4.6 KiB
JavaScript
// Load Modules
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const express = require('express');
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const multer = require('multer');
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const pdf = require('pdf-parse');
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const { Document, Packer, Paragraph, TextRun } = require('docx');
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const Anthropic = require('@anthropic-ai/sdk');
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// Load Environment Variables
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require('dotenv').config();
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const router = express.Router();
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const upload = multer({ storage: multer.memoryStorage() });
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// initialize LLM
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//TODO Update to have User Provide their own key
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const anthropic = new Anthropic({
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apiKey: process.env.ANTHROPIC_API_KEY,
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});
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// Handle Resume upload and user input for Job Description
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router.post('/', upload.single('resume'), async (req, res) =>{
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try{
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if (!req.file || !req.body.jobDescription) {
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return res.status(400).json({ error: 'Resume and Job Description are required' });
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}
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let resumeText = req.file.buffer.toString('utf-8');
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const jobDescription = req.body.jobDescription;
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if (req.file.mimetype === 'application/pdf') {
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const pdfData = await pdf(req.file.buffer);
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resumeText = pdfData.text;
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}
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// Load the LLM APi Messages
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// These include placeholders to be replaced later in function
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const resume_parser_api = require('../data/resume_parser_api.json');
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const cover_letter_api = require('../data/cover_letter_api.json');
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// Replace placeholder in resume api with extracted text
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resume_parser_api.messages[0].content[0].text = resume_parser_api.messages[0].content[0].text.replace("{{resume}}", resumeText);
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// Send resume to LLM
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const resumeResponse = await anthropic.messages.create(resume_parser_api);
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const candidateProfile = resumeResponse.content[0].text.split('```json')[1].split('```')[0].trim();
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// Replace variables in cover letter API prompt
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cover_letter_api.messages[0].content[0].text = cover_letter_api.messages[0].content[0].text
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.replace('{{resume_json}}', candidateProfile)
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.replace('{{job_description}}', jobDescription)
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.replace('{{date}}', new Date().toDateString());
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//Send data to LLM to generate Cover Letter
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const coverLetterResponse = await anthropic.messages.create(cover_letter_api);
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const coverLetterRawText = coverLetterResponse.content[0].text.split('<cover_letter>')[1].split('</cover_letter>')[0].trim();
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res.json({ coverLetter: coverLetterRawText });
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} catch (error) {
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console.error(error);
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res.status(500).json({ error: 'Error generating cover letter' });
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}
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});
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router.post('/download', async (req, res) => {
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try {
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const { coverLetterText } = req.body;
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// Generate .docx file dynamically
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const docBuffer = await generateCoverLetter(coverLetterText);
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// Set response headers for file download
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res.setHeader('Content-Disposition', 'attachment; filename="cover_letter.docx"');
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res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document');
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res.send(docBuffer);
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} catch (error) {
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console.error(error);
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res.status(500).json({ error: 'Error generating document' });
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}
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});
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function generateCoverLetter(rawText, outputFilename) {
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const header = rawText.match(/<header>(.*?)<\/header>/s)[1].trim();
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const greeting = rawText.match(/<greeting>(.*?)<\/greeting>/s)[1].trim();
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const introduction = rawText.match(/<introduction>(.*?)<\/introduction>/s)[1].trim();
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const body = rawText.match(/<body>(.*?)<\/body>/s)[1].trim();
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const conclusion = rawText.match(/<conclusion>(.*?)<\/conclusion>/s)[1].trim();
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const signature = rawText.match(/<signature>(.*?)<\/signature>/s)[1].trim();
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// Create a new document using docx
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const doc = new Document({
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sections: [
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{
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properties: {},
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children: [
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new Paragraph({
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children: [
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new TextRun(header),
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new TextRun("\n\n"), // Add line breaks between sections
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],
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}),
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new Paragraph({
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children: [
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new TextRun(greeting),
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new TextRun("\n\n"),
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],
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}),
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new Paragraph({
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children: [
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new TextRun(introduction),
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new TextRun("\n\n"),
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],
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}),
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new Paragraph({
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children: [
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new TextRun(body),
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new TextRun("\n\n"),
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],
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}),
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new Paragraph({
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children: [
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new TextRun(conclusion),
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new TextRun("\n\n"),
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],
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}),
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new Paragraph({
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children: [
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new TextRun(signature),
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new TextRun("\n\n"),
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],
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}),
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],
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},
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],
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});
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return Packer.toBuffer(doc);
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}
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module.exports = router; |