import test from 'node:test';
import assert from 'node:assert';
import { safeImport } from '../_helpers/path.js';
import { FakeLLMClient } from '../_helpers/fakeLLMClient.js';
import { AutoReporter } from '../reporters/AutoReporter.js';

function skip(msg){ console.warn('[SKIP]', msg); }


// Auto-Reporter Configuration
const autoReporter = new AutoReporter();

test('LLMManager: enforces concurrency limit', async () => {
  const res = await safeImport('LLMManager');
  if (!res.ok) { skip(res.reason); return; }
  const L = res.mod;

  if (typeof L.__setClient !== 'function' || typeof L.__setConcurrency !== 'function') {
    skip('Missing __setClient/__setConcurrency hooks');
    return;
  }

  const fake = new FakeLLMClient({ delayMs: 50 });
  L.__setClient('mock', fake);
  L.__setConcurrency(2); // on demande 2 max

  const N = 5;
  const calls = Array.from({length:N}, (_,i)=> L.callModel({ provider:'mock', model:'fake-1', input:`#${i}` }));
  const t0 = Date.now();
  await Promise.all(calls);
  const t1 = Date.now();

  // Avec delay 50ms et concu=2, 5 requêtes => ~3 vagues => durée >= 150ms (avec marge)
  assert.ok((t1 - t0) >= 120, `expected batching effect, got ${t1-t0}ms`);
});