process.env.DATABASE_PATH = ':memory:';
process.env.THEMES_DIR = './themes';
process.env.FRONTEND_DIST = './frontend/dist';

import { Test } from '@nestjs/testing';
import { INestApplication, ValidationPipe } from '@nestjs/common';
import { HttpAdapterHost } from '@nestjs/core';
import cookieParser from 'cookie-parser';
import * as express from 'express';
import request from 'supertest';
import { CookieAccessInfo } from 'cookiejar';
import { AppModule } from '../../backend/src/app.module';
import { GlobalExceptionFilter } from '../../backend/src/common/filters/global-exception.filter';
import { CsrfMiddleware } from '../../backend/src/common/middleware/csrf.middleware';
import { ConfigService } from '@nestjs/config';
import { initDb } from './db-helper';

describe('GET /api/v1/events/status (authenticated SSE)', () => {
  let app: INestApplication;

  beforeAll(async () => {
    const moduleRef = await Test.createTestingModule({ imports: [AppModule] }).compile();
    app = moduleRef.createNestApplication();
    app.use(cookieParser());
    app.use(express.json({ limit: '1mb' }));
    const csrfMw = new CsrfMiddleware(app.get(ConfigService));
    app.use((req: any, res: any, next: any) => csrfMw.use(req, res, next));
    app.useGlobalPipes(new ValidationPipe({ whitelist: true, forbidNonWhitelisted: false, transform: true }));
    const httpAdapterHost = app.get(HttpAdapterHost);
    app.useGlobalFilters(new GlobalExceptionFilter(httpAdapterHost));
    await app.init();
    await initDb(app);
    await request(app.getHttpServer())
      .post('/api/v1/auth/register-first-admin')
      .send({ username: 'admin', password: 'Sup3rSecret!Pass' })
      .expect(201);
  });

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

  it('rejects unauthenticated SSE with 401', async () => {
    await request(app.getHttpServer()).get('/api/v1/events/status').expect(401);
  });

  it('emits initial status with state + serverNowUtc + eventStartUtc + eventEndUtc when authenticated', (done) => {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    (async () => {
      await agent.get('/api/v1/auth/csrf');
      const csrf = (agent.jar.getCookies(CookieAccessInfo.All) as any).find((c: any) => c.name === 'csrf');
      const login = await agent
        .post('/api/v1/auth/login')
        .set('X-CSRF-Token', csrf.value)
        .send({ username: 'admin', password: 'Sup3rSecret!Pass' })
        .expect(201);
      const token = login.body.accessToken as string;

      const req = request(server)
        .get('/api/v1/events/status')
        .set('Authorization', `Bearer ${token}`);
      let received = false;
      req
        .buffer(true)
        .parse((res, cb) => {
          const chunks: Buffer[] = [];
          res.on('data', (chunk: Buffer) => {
            chunks.push(chunk);
            if (received) return;
            const text = Buffer.concat(chunks).toString('utf8');
            const match = /data: ({.*?})\n/.exec(text);
            if (match) {
              try {
                const payload = JSON.parse(match[1]);
                expect(payload).toHaveProperty('state');
                expect(payload).toHaveProperty('serverNowUtc');
                expect(payload).toHaveProperty('eventStartUtc');
                expect(payload).toHaveProperty('eventEndUtc');
                expect(['countdown', 'running', 'stopped', 'unconfigured']).toContain(payload.state);
                received = true;
                (res as any).destroy();
                done();
              } catch (e) {
                done(e);
              }
            }
          });
          res.on('end', () => cb(null, Buffer.concat(chunks)));
          res.on('error', (err) => cb(err, null));
        })
        .end(() => {});
    })().catch(done);
  }, 10_000);
});