@codemafia0000/d0/src/lib/utils/git-utils.js

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const fs = require('fs');
const path = require('path');
const CONSTANTS = require('../constants');

function updateGitignore(projectDir) {
  const gitignorePath = path.join(projectDir, '.gitignore');
  
  // Define what should be ignored in .d0 directory
  const d0IgnoreEntries = CONSTANTS.D0_GITIGNORE_ENTRIES;
  
  let gitignoreContent = '';
  let needsUpdate = false;
  
  if (fs.existsSync(gitignorePath)) {
    gitignoreContent = fs.readFileSync(gitignorePath, 'utf8');
    
    // Check if d0 entries already exist
    if (!gitignoreContent.includes('.d0/tmp/')) {
      needsUpdate = true;
    }
  } else {
    needsUpdate = true;
  }
  
  if (needsUpdate) {
    // Append d0 ignore entries
    gitignoreContent += d0IgnoreEntries.join('\n');
    fs.writeFileSync(gitignorePath, gitignoreContent);
    return true;
  }
  
  return false;
}

module.exports = {
  updateGitignore
};