process.env.DATABASE_PATH = ':memory:';
process.env.THEMES_DIR = './themes';
process.env.FRONTEND_DIST = './frontend/dist';
process.env.UPLOAD_DIR = '/tmp/hipctf-challenges-status-rest-test';

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 { 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';
import { SettingsService } from '../../backend/src/modules/settings/settings.module';
import { SETTINGS_KEYS } from '../../backend/src/config/env.schema';

describe('GET /api/v1/challenges/status (REST snapshot)', () => {
  let app: INestApplication;
  let settings: SettingsService;
  let adminToken: string;
  let adminCsrf: string;

  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);
    settings = app.get(SettingsService);

    const server = app.getHttpServer();
    await request(server).post('/api/v1/auth/register-first-admin')
      .send({ username: 'admin', password: 'Sup3rSecret!Pass' })
      .expect(201);
    const csrfPrime = await request(server).get('/api/v1/auth/csrf');
    const csrfCookie = (csrfPrime.headers['set-cookie'] as unknown as string[] | undefined)?.find((c) => c.startsWith('csrf='));
    adminCsrf = csrfCookie ? decodeURIComponent(csrfCookie.split(';')[0].split('=')[1]) : '';
    const login = await request(server).post('/api/v1/auth/login')
      .set('Cookie', `csrf=${adminCsrf}`)
      .set('X-CSRF-Token', adminCsrf)
      .send({ username: 'admin', password: 'Sup3rSecret!Pass' })
      .expect(201);
    adminToken = login.body.accessToken;
  });

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

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

  it('returns the running window snapshot for an authenticated user', async () => {
    const start = new Date(Date.now() - 60_000).toISOString();
    const end = new Date(Date.now() + 3600_000).toISOString();
    await settings.set(SETTINGS_KEYS.EVENT_START_UTC, start);
    await settings.set(SETTINGS_KEYS.EVENT_END_UTC, end);

    const res = await request(app.getHttpServer())
      .get('/api/v1/challenges/status')
      .set('Authorization', `Bearer ${adminToken}`)
      .expect(200);
    expect(res.body.state).toBe('running');
    expect(typeof res.body.serverNowUtc).toBe('string');
    expect(res.body.eventStartUtc).toBe(start);
    expect(res.body.eventEndUtc).toBe(end);
    expect(res.body.secondsToStart).toBeNull();
    expect(res.body.secondsToEnd).toBeGreaterThan(3500);
  });

  it('returns countdown state when the event has not started yet', async () => {
    const start = new Date(Date.now() + 3600_000).toISOString();
    const end = new Date(Date.now() + 7200_000).toISOString();
    await settings.set(SETTINGS_KEYS.EVENT_START_UTC, start);
    await settings.set(SETTINGS_KEYS.EVENT_END_UTC, end);

    const res = await request(app.getHttpServer())
      .get('/api/v1/challenges/status')
      .set('Authorization', `Bearer ${adminToken}`)
      .expect(200);
    expect(res.body.state).toBe('countdown');
    expect(res.body.secondsToStart).toBeGreaterThan(3500);
  });
});