#!/usr/bin/env node

import { execFile } from 'node:child_process';
import { promisify } from 'node:util';

const execFileAsync = promisify(execFile);

function parseArgs(argv) {
  const out = {};
  for (let i = 0; i < argv.length; i += 1) {
    const token = argv[i];
    if (!token.startsWith('--')) continue;
    const key = token.slice(2);
    const next = argv[i + 1];
    if (!next || next.startsWith('--')) {
      out[key] = 'true';
      continue;
    }
    out[key] = next;
    i += 1;
  }
  return out;
}

function required(args, key) {
  const value = args[key];
  if (!value || !String(value).trim()) {
    throw new Error(`missing_required_arg: --${key}`);
  }
  return String(value).trim();
}

async function main() {
  const args = parseArgs(process.argv.slice(2));
  const action = {
    action: 'sin.github.issue.comment.as_app',
    agentSlug: required(args, 'agent'),
    repo: required(args, 'repo'),
    issueNumber: Number(required(args, 'issue-number')),
    installationId: Number(required(args, 'installation-id')),
    body: required(args, 'body'),
  };

  if (!Number.isFinite(action.issueNumber) || !Number.isFinite(action.installationId)) {
    throw new Error('invalid_numeric_args: --issue-number and --installation-id must be numbers');
  }

  const { stdout } = await execFileAsync('node', ['dist/src/cli.js', 'run-action', JSON.stringify(action)], {
    cwd: process.cwd(),
  });
  process.stdout.write(stdout);
}

main().catch((error) => {
  console.error(error instanceof Error ? error.message : String(error));
  process.exit(1);
});