/**
 * Concurrent smoke test: 10 parallel calls to generateQuoteNumberServer
 * must produce 10 unique, contiguous quote numbers (no collisions).
 */
import { generateQuoteNumberServer } from "../../src/lib/server/quotes-service";

async function main() {
  const calls = Array.from({ length: 10 }, () => generateQuoteNumberServer());
  const results = await Promise.all(calls);
  console.log("Generated:", results);

  const set = new Set(results);
  if (set.size !== results.length) {
    console.error(`FAIL — got ${results.length} results but only ${set.size} unique`);
    process.exit(1);
  }
  // Numbers must be contiguous (Q-2026-06-004..013, since -001..-003 are taken)
  const seqs = results
    .map((r) => Number(r.match(/Q-\d{4}-\d{2}-(\d{3})$/)![1]))
    .sort((a, b) => a - b);
  for (let i = 0; i < seqs.length; i += 1) {
    if (seqs[i] !== seqs[0] + i) {
      console.error(`FAIL — non-contiguous sequence: ${seqs.join(",")}`);
      process.exit(1);
    }
  }
  console.log("OK — 10 concurrent calls, all unique and contiguous.");
}

main().catch((err) => {
  console.error(err);
  process.exit(1);
});