git-bolt/lib/commands/log.js

Git utilities for faster development

import chalk from 'chalk';
import fs from 'fs';
import git from 'isomorphic-git';

async function logCommand(options) {
  try {
    const depth = options.depth || 10; // Default to showing 10 commits
    
    // Get current branch
    const currentBranch = await git.currentBranch({ fs, dir: '.' })
      .catch(() => 'HEAD');
    
    console.log(chalk.blue(`Commit history for branch: ${currentBranch || 'HEAD'}`));
    console.log(chalk.gray('─'.repeat(80)));
    
    // Get the latest commit
    let commitOid = await git.resolveRef({ fs, dir: '.', ref: currentBranch || 'HEAD' });
    
    // Track visited commits to avoid duplicates
    const visitedCommits = new Set();
    let count = 0;
    
    // Traverse the commit history
    while (commitOid && count < depth) {
      // Skip if we've seen this commit (prevents cycles)
      if (visitedCommits.has(commitOid)) break;
      visitedCommits.add(commitOid);
      
      try {
        // Read commit
        const { commit, oid } = await git.readCommit({ fs, dir: '.', oid: commitOid });
        
        // Format date
        const date = new Date(commit.author.timestamp * 1000);
        const formattedDate = date.toLocaleDateString() + ' ' + date.toLocaleTimeString();
        
        // Short commit hash
        const shortOid = oid.substring(0, 7);
        
        // Print commit info
        console.log(chalk.yellow(`Commit: ${shortOid}`));
        console.log(chalk.green(`Author: ${commit.author.name} <${commit.author.email}>`));
        console.log(chalk.green(`Date:   ${formattedDate}`));
        console.log('');
        console.log(`    ${commit.message.split('\n').join('\n    ')}`);
        console.log(chalk.gray('─'.repeat(80)));
        
        // Move to parent commit
        if (commit.parent.length > 0) {
          commitOid = commit.parent[0];
        } else {
          // No more parents
          commitOid = null;
        }
        
        count++;
      } catch (error) {
        console.error(chalk.red(`Error reading commit ${commitOid}: ${error.message}`));
        break;
      }
    }
    
    if (count === 0) {
      console.log(chalk.yellow('No commits found in this repository.'));
    } else if (count === depth && commitOid) {
      console.log(chalk.blue(`Showing ${depth} most recent commits. Use --depth <number> to see more.`));
    }
  } catch (error) {
    console.error(chalk.red('Error getting commit history:'), error.message);
    process.exit(1);
  }
}

export { logCommand };