index.js

#!/usr/bin/env node
const { program } = require('commander');
const { spawnSync } = require('child_process');
const fs = require('fs');
const path = require('path');
const os = require('os');

async function reviewProposal(input, option) {
  try {
    const pythonScript = path.join(__dirname, 'evaluator.py');
    let filePath = null;

    if (option === '-f') {
      const validExtensions = ['.pdf', '.docx', '.txt'];
      const fileExt = path.extname(input).toLowerCase();

      if (!fs.existsSync(input) || !validExtensions.includes(fileExt)) {
        throw new Error('Please provide a valid PDF or DOCX file path');
      }
      filePath = input;
    } else if (option === '-t') {
      // Write the text to a temporary file
      const tempDir = os.tmpdir();
      const tempFileName = `proposal_${Date.now()}.txt`;
      filePath = path.join(tempDir, tempFileName);
      fs.writeFileSync(filePath, input, 'utf-8');
    } else {
      throw new Error('Invalid option. Use -f for file path or -t for text.');
    }

    const result = spawnSync('python', [pythonScript, filePath], {
      encoding: 'utf-8'
    });

    // Clean up the temporary file if it was created
    if (option === '-t' && fs.existsSync(filePath)) {
      fs.unlinkSync(filePath);
    }

    if (result.error) {
      throw new Error(`Error executing Python script: ${result.error.message}`);
    }

    if (result.status !== 0) {
        throw new Error(`Python script exited with status ${result.status}: ${result.stderr}`);
    }

    return JSON.parse(result.stdout);

  } catch (error) {
    console.error('Error:', error.message);
    throw error; // Re-throw the error for the caller to handle
  }
}

// CLI Logic
if (require.main === module) {
  program
    .name('proposal-reviewer')
    .description('CLI tool to evaluate research proposals')
    .version('1.0.0')
    .argument('<input>', 'File path or text to evaluate')
    .option('-f, --file', 'Input is a file path')
    .option('-t, --text', 'Input is text content')
    .action(async (input, options) => {
      let option = null;
      if (options.file) {
        option = '-f';
      } else if (options.text) {
        option = '-t';
      } else {
        console.error('Please specify either -f for file path or -t for text.');
        program.help();
      }

      try {
        const evaluation = await reviewProposal(input, option);
        console.log(JSON.stringify(evaluation, null, 2));
      } catch (error) {
        // Error already logged in reviewProposal
        process.exit(1);
      }
    });

  program.parse();
}

module.exports = {
  reviewProposal
};