git-bolt/lib/commands/pull.js

Git utilities for faster development

import chalk from 'chalk';
import fs from 'fs';
import git from 'isomorphic-git';
import http from 'isomorphic-git/http/node/index.js';
import { getGitHubToken } from '../utils/auth.js';
import { closeReadlineInterface } from '../utils/input.js';

async function pullCommand(options) {
  try {
    // Load GitHub token
    const token = getGitHubToken();
    
    if (!token) {
      console.error(chalk.red('Error: GitHub token not found'));
      console.log('Set it using:');
      console.log('  - The GITHUB_TOKEN environment variable');
      console.log('  - A .env file with GITHUB_TOKEN=your_token');
      process.exit(1);
    }
    
    // Get current branch or use the branch specified as option
    const branch = options.branch || await git.currentBranch({ fs, dir: '.' });
        
    if (!branch) {
      console.error(chalk.red('Error: Could not determine current branch and no branch specified'));
      console.log('Use: npx git-bolt pull -b <branch-name>');
      process.exit(1);
    }
    
    console.log(chalk.blue(`Pulling from branch: ${branch}`));

    // Use isomorphic-git's built-in pull function
    try {
      await git.pull({
        fs,
        http,
        dir: '.',
        ref: branch,
        remote: 'origin',
        fastForwardOnly: true, // Only allow fast-forward merges
        onAuth: () => ({ username: token }),
        singleBranch: true,
        tags: true,
        depth: Infinity,
        prune: true
      });
      
      console.log(chalk.green('✓ Pull completed successfully'));
    } catch (pullError) {
      if (pullError.code === 'MergeNotSupportedError') {
        console.error(chalk.red('Error: Fast-forward merge failed.'));
        console.log(chalk.yellow('This pull command only supports fast-forward merges.'));
      } else {
        console.error(chalk.red('Error during pull:'), pullError.message);
      }
      process.exit(1);
    }
  } catch (error) {
    console.error(chalk.red('Error during pull:'), error.message);
    process.exit(1);
  } finally {
    // Close any readline interfaces if they were opened
    if (typeof closeReadlineInterface === 'function') {
      closeReadlineInterface();
    }
  }
}

export { pullCommand };