import { describe, test, expect, beforeAll, afterAll, beforeEach, afterEach } from 'bun:test';
import { Database } from 'bun:sqlite';
import { WebhookServer } from '../../../src/server';
import { initializeDatabase } from '../../../src/db';
import { ResponseQueue } from '../../../src/services/response-queue';
import { AllowedGroups } from '../../../src/services/allowed-groups';
import { GroupSyncService } from '../../../src/services/group-sync';

let testDb: Database;
let originalAdd: any;

let simulatedQueue: any[] = [];
const SimulatedResponseQueue = {
  async add(responses: any[]) {
    simulatedQueue.push(...responses);
  },
  clear() { simulatedQueue = []; },
  get() { return simulatedQueue; }
};

const createTestRequest = (payload: any) =>
  new Request('http://localhost:3007', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(payload)
  });

describe('WebhookServer - enforce gating (modo=enforce)', () => {
  const envBackup = process.env;

  beforeAll(() => {
    testDb = new Database(':memory:');
    initializeDatabase(testDb);
    originalAdd = (ResponseQueue as any).add;
  });

  afterAll(() => {
    (ResponseQueue as any).add = originalAdd;
    testDb.close();
  });

  beforeEach(() => {
    process.env = {
      ...envBackup,
      NODE_ENV: 'test',
      GROUP_GATING_MODE: 'enforce'
    };
    SimulatedResponseQueue.clear();
    (ResponseQueue as any).add = SimulatedResponseQueue.add;
    WebhookServer.dbInstance = testDb;
    (AllowedGroups as any).dbInstance = testDb;

    // Limpiar tablas relevantes
    testDb.exec('DELETE FROM response_queue');
    testDb.exec('DELETE FROM allowed_groups');
    testDb.exec('DELETE FROM users');
  });

  afterEach(() => {
    process.env = envBackup;
  });

  test('bloquea mensaje de grupo no permitido (no se encolan respuestas)', async () => {
    const payload = {
      event: 'messages.upsert',
      instance: 'test-instance',
      data: {
        key: {
          remoteJid: 'blocked-group@g.us',
          participant: '1234567890@s.whatsapp.net'
        },
        message: { conversation: '/t ayuda' }
      }
    };

    const res = await WebhookServer.handleRequest(createTestRequest(payload));
    expect(res.status).toBe(200);

    // No debe haber respuestas encoladas (retorno temprano)
    expect(SimulatedResponseQueue.get().length).toBe(0);

    // allowed_groups no contiene allowed para ese grupo (get() devuelve null cuando no hay filas)
    const row = testDb.query(`SELECT status FROM allowed_groups WHERE group_id = 'blocked-group@g.us'`).get() as any;
    expect(row == null).toBe(true);
  });

  test('permite mensaje en grupo allowed y procesa comando', async () => {
    // Sembrar grupo como allowed
    testDb.exec(`
      INSERT INTO allowed_groups (group_id, status, discovered_at, updated_at)
      VALUES ('allowed-group@g.us', 'allowed', strftime('%Y-%m-%d %H:%M:%f','now'), strftime('%Y-%m-%d %H:%M:%f','now'))
    `);

    // Marcar el grupo como activo en la caché para evitar retorno temprano por "grupo inactivo" en tests
    GroupSyncService.activeGroupsCache.set('allowed-group@g.us', 'Allowed Group');

    const payload = {
      event: 'messages.upsert',
      instance: 'test-instance',
      data: {
        key: {
          remoteJid: 'allowed-group@g.us',
          participant: '1234567890@s.whatsapp.net'
        },
        message: { conversation: '/t ayuda' }
      }
    };

    const res = await WebhookServer.handleRequest(createTestRequest(payload));
    expect(res.status).toBe(200);

    // Debe haberse encolado al menos una respuesta (ayuda)
    expect(SimulatedResponseQueue.get().length).toBeGreaterThan(0);
  });
});