const fs = require('fs');
const path = require('path');

function collectFromDir(dir) {
  const list = [];
  if (!fs.existsSync(dir)) return list;
  for (const file of fs.readdirSync(dir)) {
    if (!file.endsWith('.ts')) continue;
    const full = path.join(dir, file);
    const txt = fs.readFileSync(full, 'utf8');
    const rx = /request\.(get|post|put|delete)\(\s*[`'"]([^`'"\)]+)[`'"]/gi;
    let m;
    while ((m = rx.exec(txt))) {
      const method = m[1].toUpperCase();
      const p = m[2].replace(/^\//, '');
      if (/^https?:\/\//i.test(p)) continue;
      list.push({ method, path: p });
    }
  }
  return list;
}

function toKey(r) {
  return `${r.method} ${r.path}`;
}

function unique(list) {
  const map = new Map();
  for (const r of list) map.set(toKey(r), r);
  return Array.from(map.values()).sort((a, b) => (a.path === b.path ? a.method.localeCompare(b.method) : a.path.localeCompare(b.path)));
}

function main() {
  const javaDir = path.join(__dirname, '..', 'niucloud-admin-java', 'admin', 'src', 'app', 'api');
  const phpDir = path.join(__dirname, '..', 'niucloud-php', 'admin', 'src', 'app', 'api');

  const javaList = unique(collectFromDir(javaDir));
  const phpList = unique(collectFromDir(phpDir));

  const javaSet = new Set(javaList.map(toKey));
  const phpSet = new Set(phpList.map(toKey));

  const both = javaList.filter((r) => phpSet.has(toKey(r)));
  const onlyJava = javaList.filter((r) => !phpSet.has(toKey(r)));
  const onlyPhp = phpList.filter((r) => !javaSet.has(toKey(r)));

  const outDir = path.join(__dirname, 'contracts');
  if (!fs.existsSync(outDir)) fs.mkdirSync(outDir, { recursive: true });
  fs.writeFileSync(path.join(outDir, 'routes.java.json'), JSON.stringify(javaList, null, 2));
  fs.writeFileSync(path.join(outDir, 'routes.php.json'), JSON.stringify(phpList, null, 2));
  fs.writeFileSync(path.join(outDir, 'routes.intersection.json'), JSON.stringify(both, null, 2));
  fs.writeFileSync(path.join(outDir, 'routes.only-java.json'), JSON.stringify(onlyJava, null, 2));
  fs.writeFileSync(path.join(outDir, 'routes.only-php.json'), JSON.stringify(onlyPhp, null, 2));

  console.log(`Java total: ${javaList.length}`);
  console.log(`PHP total:  ${phpList.length}`);
  console.log(`Overlap:    ${both.length}`);
  console.log(`Only Java:  ${onlyJava.length}`);
  console.log(`Only PHP:   ${onlyPhp.length}`);
}

main();