#!/usr/bin/env node
const fs = require('fs');
const path = require('path');
const { CASE_PATTERNS, PATTERN_LIBRARY } = require('../mcp/src/features/tihao-sourcing/brief-rule-patterns');

function main() {
  const args = parseArgs(process.argv.slice(2));
  const outputDir = path.resolve(args.output || path.join(__dirname, '..', 'docs'));
  fs.mkdirSync(outputDir, { recursive: true });
  const outFile = path.join(outputDir, 'brief-rule-patterns.json');
  fs.writeFileSync(outFile, JSON.stringify({
    generatedAt: new Date().toISOString(),
    caseCount: CASE_PATTERNS.length,
    casePatterns: CASE_PATTERNS,
    patternLibrary: Object.entries(PATTERN_LIBRARY).map(([key, item]) => ({
      key,
      label: item.label,
      note: item.note,
      regex: item.regex.source
    }))
  }, null, 2), 'utf8');
  console.log(JSON.stringify({ outFile, caseCount: CASE_PATTERNS.length, patternCount: Object.keys(PATTERN_LIBRARY).length }, null, 2));
}

function parseArgs(argv) {
  const args = {};
  for (let index = 0; index < argv.length; index += 1) {
    const raw = argv[index];
    if (!raw.startsWith('--')) continue;
    const key = raw.slice(2).replace(/-([a-z])/g, (_, char) => char.toUpperCase());
    const next = argv[index + 1];
    if (!next || next.startsWith('--')) args[key] = true;
    else {
      args[key] = next;
      index += 1;
    }
  }
  return args;
}

if (require.main === module) {
  try {
    main();
  } catch (error) {
    console.error(error && error.stack ? error.stack : String(error));
    process.exit(1);
  }
}

module.exports = { main };