GitHub files diff by commits

GitHub files diff script

name: Diff Changed Files

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  diff-files:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
        with:
          fetch-depth: 2

      - name: Install Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '16'

      - name: Install dependencies
        run: npm install

      - name: Run diff script
        run: node <PATH_TO_YOUR_SCRIPT>
        env:
          GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}

script.js

const https = require('https');
const querystring = require('querystring');

// Replace <YOUR_ACCESS_TOKEN> with your personal access token
const accessToken = '<YOUR_ACCESS_TOKEN>';

// Replace <OWNER> and <REPO> with the owner and repository name
const owner = '<OWNER>';
const repo = '<REPO>';

// Replace <BASE_COMMIT_SHA> and <HEAD_COMMIT_SHA> with the commit SHAs
const baseCommitSha = '<BASE_COMMIT_SHA>';
const headCommitSha = '<HEAD_COMMIT_selectBox.value = e.target.value;

// Function to make a request to the GitHub API
function makeApiRequest(path, method = 'GET', data) {
  const options = {
    hostname: 'api.github.com',
    port: 443,
    path: `/repos/${owner}/${repo}${path}`,
    method: method,
    headers: {
      'User-Agent': 'Node.js Script',
      'Authorization': `token ${accessToken}`,
      'Accept': 'application/vnd.github.v3+json'
    }
  };

  return new Promise((resolve, reject) => {
    const req = https.request(options, (res) => {
      let responseBody = '';

      res.on('data', (chunk) => {
        responseBody += chunk;
      });

      res.on('end', () => {
        if (res.statusCode >= 200 && res.statusCode < 300) {
          resolve(JSON.parse(responseBody));
        } else {
          reject(new Error(`Request failed with status code ${res.statusCode}: ${responseBody}`));
        }
      });
    });

    req.on('error', (error) => {
      reject(error);
    });

    if (data) {
      req.write(JSON.stringify(data));
    }

    req.end();
  });
}

// Function to get the files changed between two commits
async function getChangedFiles(baseSha, headSha) {
  const baseTree = await makeApiRequest(`/commits/${baseSha}/tree`);
  const headTree = await makeApiRequest(`/commits/${headSha}/tree`);

  const baseTreeFiles = baseTree.tree.map(file => file.path);
  const headTreeFiles = headTree.tree.map(file => file.path);

  return headTreeFiles.filter(file => !baseTreeFiles.includes(file));
}

// Main function
async function main() {
  try {
    const changedFiles = await getChangedFiles(baseCommitSha, headCommitSha);
    console.log('Changed files:', changedFiles);
  } catch (error) {
    console.error('An error occurred:', error.message);
  }
}

main();