#!/usr/bin/env bun
import * as fs from 'fs';
import * as path from 'path';
import { loadLensRegistry, resolveLensName } from '../scripts/lenses/registry';
import { parseLensOutput } from '../scripts/lenses/parser';

function arg(name: string): string | undefined {
  const index = process.argv.indexOf(name);
  return index >= 0 ? process.argv[index + 1] : undefined;
}

const repoRoot = path.resolve(arg('--repo-root') ?? process.cwd());
const lensName = arg('--lens');
if (!lensName) {
  console.error('Usage: gstack-lens-parse --lens <name> [--file <path>] [--repo-root <path>]');
  process.exit(2);
}
const spec = resolveLensName(loadLensRegistry(repoRoot), lensName!);
if (!spec) {
  console.error(`Unknown stakeholder lens: ${lensName}`);
  process.exit(2);
}
const file = arg('--file');
const raw = file ? fs.readFileSync(path.resolve(file), 'utf8') : fs.readFileSync(0, 'utf8');
const parsed = parseLensOutput(raw, spec!);
process.stdout.write(`${JSON.stringify(parsed)}\n`);
process.exit(parsed.result ? 0 : 1);