import { INestApplication } from '@nestjs/common';
import { Test } from '@nestjs/testing';
import request from 'supertest';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';
import { createHmac, randomUUID } from 'crypto';

process.env.DB_HOST = '127.0.0.1';
process.env.DB_PORT = '3307';
process.env.DB_USER = 'fabric';
process.env.DB_PASSWORD = 'fabric';
process.env.DB_NAME = 'fabric_center';
process.env.DB_SYNC = 'true';
process.env.CENTER_SHARED_SECRET = 'test-center-secret';
process.env.JWT_ACCESS_SECRET = 'test-access-secret';
process.env.JWT_REFRESH_SECRET = 'test-refresh-secret';

describe('center integration (mysql + api)', () => {
  let app: INestApplication;

  beforeAll(async () => {
    const { AppModule } = await import('./app.module');
    const moduleRef = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleRef.createNestApplication();
    app.setGlobalPrefix('api');
    await app.init();
  }, 30000);

  afterAll(async () => {
    if (app) await app.close();
  });

  it('GET /api/healthz returns db ready', async () => {
    const res = await request(app.getHttpServer()).get('/api/healthz');
    expect(res.status).toBe(200);
    expect(res.body.ok).toBe(true);
    expect(res.body.database).toBe('ready');
  });

  it('POST /api/nodes/register follows center-guild contract (version + hmac)', async () => {
    const body = {
      nodeId: `guild-node-${Date.now()}`,
      name: 'Guild Node Contract Test',
      endpoint: `http://guild-${Date.now()}:7002`,
    };

    const timestamp = new Date().toISOString();
    const nonce = randomUUID();
    const canonical = ['POST', '/api/nodes/register', timestamp, nonce, JSON.stringify(body)].join('\n');
    const signature = createHmac('sha256', process.env.CENTER_SHARED_SECRET as string)
      .update(canonical)
      .digest('hex');

    const res = await request(app.getHttpServer())
      .post('/api/nodes/register')
      .set('x-fabric-version', '1')
      .set('x-fabric-timestamp', timestamp)
      .set('x-fabric-nonce', nonce)
      .set('x-fabric-signature', signature)
      .send(body);

    expect(res.status).toBe(201);
    expect(res.body.status).toBe('accepted');
    expect(res.body.negotiatedVersion).toBe('1');
    expect(res.body.node.nodeId).toBe(body.nodeId);
  });
});