const fs = require("node:fs");
const path = require("node:path");

const projectRoot = path.resolve(__dirname, "..");
const cliEntry = path.join(projectRoot, "dist", "cli", "index.js");
const shebang = "#!/usr/bin/env node\n";

if (!fs.existsSync(cliEntry)) {
  console.log(`dist/cli/index.js not found — skipping shebang check (build may not have run yet)`);
  process.exit(0);
}

const content = fs.readFileSync(cliEntry, "utf-8");

if (content.startsWith(shebang.trim())) {
  console.log("Shebang already present in dist/cli/index.js");
  process.exit(0);
}

const updated = shebang + content;
fs.writeFileSync(cliEntry, updated, "utf-8");
console.log("Prepended shebang to dist/cli/index.js");
process.exit(0);