Print git changes by file name

find-get-commits-by-file-name.js

const { execSync } = require('child_process');

// Replace the array with the usernames of the developers whose commits you want to fetch
const developers = ['developer1', 'developer2', 'developer3'];

function getCommitsByDevelopers() {
  const commits = [];
  for (const developer of developers) {
    const gitCommand = `git log --author="${developer}" --pretty=format:"%h"`;
    const commitHashes = execSync(gitCommand).toString().trim().split('\n');
    commits.push(...commitHashes);
  }
  return commits;
}

/*
' ' = unmodified
M = modified
A = added
D = deleted
R = renamed
C = copied
U = updated but unmerged
*/

function getFileChanges(commit) {
  const gitCommand = `git show --name-status --pretty=format:"%ci: %h- %s - %an" ${commit}`;
  const output = execSync(gitCommand).toString();

  const lines = output.split('\n');
  const commitMetadata = lines.shift(); // Get commit metadata (hash, message, date, author) from the first line

  const changes = {};
  const s = {
    'A': '+',
    'M': '*',
    'D': '-',
  }
  for (const line of lines) {
    if (!line) continue;

    const [status, file] = line.split('\t');
    if (!changes[file]) {
      changes[file] = [];
    }
    const t = s[status] || status;
    changes[file].push(`${t} ${commitMetadata.replace(' +0800', '')}`);
  }

  return changes;
}



function processData() {
  const commits = getCommitsByDevelopers();
  const allChanges = {};

  for (const commit of commits) {
    const changes = getFileChanges(commit);

    for (const file in changes) {
      if (!allChanges[file]) {
        allChanges[file] = [];
      }
      allChanges[file].push(...changes[file]);
    }
  }

  return allChanges;
}

const changes = processData();

// sort changes by key
const sortedChanges = {};
Object.keys(changes).sort().forEach(key => {
  sortedChanges[key] = changes[key];
  // sort commits
  sortedChanges[key].sort((a, b) => {
    return a.slice(1).localeCompare(b.slice(1));
  }).reverse();
});
console.log(JSON.stringify(sortedChanges, null, 2));