import test from 'node:test';
import assert from 'node:assert/strict';
import monitorModule from '../src/main/repository-monitor.cjs';

const { RepositoryMonitor } = monitorModule;

test('repository monitor establishes a baseline and emits only on later changes', async () => {
  let revision = 1;
  const changes = [];
  const git = {
    status: async (localPath) => ({ localPath, revision }),
    statusFingerprint: (status) => String(status.revision)
  };
  const store = { data: { preferences: { autoRefresh: true, repositoryPollSeconds: 2 } } };
  const monitor = new RepositoryMonitor({ store, git, onChange: (change) => changes.push(change) });
  monitor.setPaths(['/repo']);
  await monitor.tick();
  assert.equal(changes.length, 0);
  revision = 2;
  await monitor.tick();
  assert.equal(changes.length, 1);
  assert.equal(changes[0].reason, 'working-tree-changed');
  monitor.pause('/repo');
  revision = 3;
  await monitor.tick();
  assert.equal(changes.length, 1);
  monitor.resume('/repo');
  await monitor.tick();
  assert.equal(changes.length, 2);
});
test('repository monitor checks multiple repositories concurrently with a bounded worker pool', async () => {
  let active = 0;
  let peak = 0;
  const git = {
    status: async (localPath) => {
      active += 1;
      peak = Math.max(peak, active);
      await new Promise((resolve) => setTimeout(resolve, 15));
      active -= 1;
      return { localPath, revision: 1 };
    },
    statusFingerprint: (status) => String(status.revision)
  };
  const store = { data: { preferences: { autoRefresh: true, repositoryPollSeconds: 2 } } };
  const monitor = new RepositoryMonitor({ store, git });
  monitor.setPaths(Array.from({ length: 10 }, (_, index) => `/repo-${index}`));
  await monitor.tick();
  assert.equal(peak, 4);
  assert.equal(active, 0);
  assert.equal(monitor.fingerprints.size, 10);
});