import { describe, test, expect, beforeEach, afterEach } from 'bun:test';
import { GroupSyncService } from '../../../src/services/group-sync';

const envBackup = { ...process.env };
let originalSyncMembers: any;
let originalSyncGroups: any;

function sleep(ms: number) {
  return new Promise(res => setTimeout(res, ms));
}

describe('GroupSyncService - scheduler de miembros', () => {
  beforeEach(() => {
    originalSyncMembers = GroupSyncService.syncMembersForActiveGroups;
    originalSyncGroups = GroupSyncService.syncGroups;
  });

  afterEach(() => {
    GroupSyncService.stopMembersScheduler();
    GroupSyncService.stopGroupsScheduler();
    GroupSyncService.syncMembersForActiveGroups = originalSyncMembers;
    GroupSyncService.syncGroups = originalSyncGroups;
    process.env = envBackup;
  });

  test('no arranca en entorno de test', async () => {
    process.env = { ...envBackup, NODE_ENV: 'test' };
    let called = 0;
    GroupSyncService.syncMembersForActiveGroups = async () => {
      called++;
      return { groups: 0, added: 0, updated: 0, deactivated: 0 };
    };

    GroupSyncService.startMembersScheduler();
    await sleep(100);
    expect(called).toBe(0);
  });

  test('arranca en producción y ejecuta según intervalo', async () => {
    process.env = { ...envBackup, NODE_ENV: 'production', GROUP_MEMBERS_SYNC_INTERVAL_MS: '30' };
    let called = 0;
    GroupSyncService.syncMembersForActiveGroups = async () => {
      called++;
      return { groups: 0, added: 0, updated: 0, deactivated: 0 };
    };

    GroupSyncService.startMembersScheduler();
    await sleep(120);
    GroupSyncService.stopMembersScheduler();
    expect(called).toBeGreaterThanOrEqual(1);
  });

  test('groups scheduler no arranca en entorno de test', async () => {
    process.env = { ...envBackup, NODE_ENV: 'test' };
    let called = 0;
    GroupSyncService.syncGroups = async () => {
      called++;
      return { added: 0, updated: 0 };
    };

    GroupSyncService.startGroupsScheduler();
    await sleep(100);
    expect(called).toBe(0);
    expect(GroupSyncService.getSecondsUntilNextGroupSync()).toBeNull();
  });

  test('groups scheduler arranca en producción y programa next tick', async () => {
    process.env = { ...envBackup, NODE_ENV: 'production', GROUP_SYNC_INTERVAL_MS: '30' };
    let called = 0;
    GroupSyncService.syncGroups = async () => {
      called++;
      return { added: 0, updated: 0 };
    };

    GroupSyncService.startGroupsScheduler();
    const secs1 = GroupSyncService.getSecondsUntilNextGroupSync();
    expect(secs1).not.toBeNull();
    expect(Number(secs1)).toBeGreaterThan(0);

    await sleep(120);
    GroupSyncService.stopGroupsScheduler();
    expect(called).toBeGreaterThanOrEqual(1);
  });
});