git-find-deleted

#!/usr/bin/env node
const { exec } = require('child_process');
const { resolve } = require('path');

const cwd = process.argv[2] ? resolve(process.argv[2]) : process.cwd();
const maxBuffer = 10 * 1024 * 1024;

const execShell = (command) => {
  return new Promise((resolve) => {
    exec(command, { cwd, maxBuffer }, (error, stdout, stderr) => {
      const errorMessage = (error && error.message) || stderr;
      if (errorMessage) {
        console.error(errorMessage);
        process.exit(1);
      }
      resolve(stdout);
    });
  });
};

const run = async () => {
  try {
    const repoUrl = await getRepo();
    const getCommitUrl = (commitHash) => `${repoUrl}/commit/${commitHash}`;

    const commits = await getCommits();
    commits.forEach(({ commit, files }, index) => {
      if (index) {
        console.log('-----------------');
      }
      console.log('\x1b[36m%s\x1b[0m', getCommitUrl(commit));
      console.log();
      files.forEach((file) => console.log(file));
    });
  } catch (error) {
    console.error(error);
  }
};

const getRepo = async () => {
  const origin = await execShell('git remote -v | grep fetch');
  const repoUrl = origin.split(/\s+/)[1];
  return repoUrl
    .replace('git@', 'http://')
    .replace('com:', 'com/')
    .replace(/.git$/, '');
};

const getCommits = async () => {
  const output = await execShell(`git log --diff-filter=D --summary -C ${cwd}`);

  const result = [];
  let current = null;
  output.split('\n').forEach((line) => {
    const commitMatch = line.match(/^commit ([a-f0-9]+)/);
    if (commitMatch) {
      current && result.push(current);
      const commit = commitMatch[1];
      current = { commit, files: [] };
    } else {
      const fileMatch = line.match(/^\s*delete mode \d+ (.*)/);
      if (fileMatch) {
        current.files.push(fileMatch[1]);
      }
    }
  });
  return result;
};

run();