smart-git-commit/getDiff/index.js

AI-powered smart commit message generator for Git diffs.

import { execSync } from "child_process";

function isGitInstalled() {
  try {
    execSync("git --version", { stdio: "ignore" });
    return true;
  } catch {
    return false;
  }
}

export default function getGitDiff() {
  if (!isGitInstalled()) {
    console.error("Git is not installed or not found in PATH.");
    process.exit(1);
  }

  try {
    const output = execSync("git diff --cached", { encoding: "utf-8" });

    if (!output.trim()) {
      console.log("No staged changes found.");
      process.exit(0);
    }

    return output;
  } catch (err) {
    console.error("Failed to get git diff:", err.message);
    process.exit(1);
  }
}