process.env.DATABASE_PATH = ':memory:';
process.env.THEMES_DIR = './themes';
process.env.FRONTEND_DIST = './frontend/dist';
process.env.UPLOAD_DIR = '/tmp/hipctf-challenges-create-category-job902';

import * as fs from 'fs';
import * as os from 'os';
import * as path from 'path';
import { Test } from '@nestjs/testing';
import { INestApplication } 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 { getRepositoryToken } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
import { CategoryEntity } from '../../backend/src/database/entities/category.entity';
import { initDb } from './db-helper';

describe('Admin Challenges API - create with empty/invalid categoryId (Job 902)', () => {
  let app: INestApplication;
  let adminToken: string;
  const uploadDir = fs.mkdtempSync(path.join(os.tmpdir(), 'hipctf-challenges-create-cat-'));
  let validCategoryId: string;

  async function primeCsrf(): Promise<{ agent: any; csrf: string }> {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    await agent.get('/api/v1/auth/csrf');
    const cookies: any = agent.jar.getCookies(CookieAccessInfo.All);
    return { agent, csrf: cookies.find((c: any) => c.name === 'csrf').value };
  }

  function wellFormedBody(categoryId: string): any {
    return {
      name: 'Missing Category Attempt',
      descriptionMd: 'desc',
      categoryId,
      difficulty: 'MEDIUM',
      initialPoints: 100,
      minimumPoints: 50,
      decaySolves: 10,
      flag: 'flag{X}',
      protocol: 'WEB',
      port: null,
      ipAddress: '',
      enabled: true,
    };
  }

  beforeAll(async () => {
    process.env.UPLOAD_DIR = uploadDir;
    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 (require('@nestjs/common').ValidationPipe)({ whitelist: true, forbidNonWhitelisted: false, transform: true }));
    const httpAdapterHost = app.get(HttpAdapterHost);
    app.useGlobalFilters(new GlobalExceptionFilter(httpAdapterHost));
    await app.init();
    await initDb(app);

    const catRepo: Repository<CategoryEntity> = app.get(getRepositoryToken(CategoryEntity));
    const cry = await catRepo.findOne({ where: { systemKey: 'CRY' } });
    if (!cry) throw new Error('expected CRY category seed');
    validCategoryId = cry.id;

    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='));
    const csrfToken = csrfCookie ? decodeURIComponent(csrfCookie.split(';')[0].split('=')[1]) : '';

    const login = await request(server).post('/api/v1/auth/login')
      .set('Cookie', `csrf=${csrfToken}`)
      .set('X-CSRF-Token', csrfToken)
      .send({ username: 'admin', password: 'Sup3rSecret!Pass' })
      .expect(201);
    adminToken = login.body.accessToken;
  });

  afterAll(async () => {
    await app.close();
    if (fs.existsSync(uploadDir)) {
      try {
        fs.rmSync(uploadDir, { recursive: true, force: true });
      } catch {
        // ignore
      }
    }
  });

  it('rejects an empty categoryId with 400 VALIDATION_FAILED and a categoryId detail', async () => {
    const { agent, csrf } = await primeCsrf();
    const res = await agent
      .post('/api/v1/admin/challenges')
      .set('Authorization', `Bearer ${adminToken}`)
      .set('X-CSRF-Token', csrf)
      .send(wellFormedBody(''));
    expect(res.status).toBe(400);
    expect(res.body?.code).toBe('VALIDATION_FAILED');
    const details = Array.isArray(res.body?.details) ? res.body.details : [];
    const categoryDetail = details.find((d: any) => d.path === 'categoryId');
    expect(categoryDetail).toBeDefined();
  });

  it('rejects a non-UUID categoryId with 400 VALIDATION_FAILED and a categoryId detail', async () => {
    const { agent, csrf } = await primeCsrf();
    const res = await agent
      .post('/api/v1/admin/challenges')
      .set('Authorization', `Bearer ${adminToken}`)
      .set('X-CSRF-Token', csrf)
      .send(wellFormedBody('not-a-uuid'));
    expect(res.status).toBe(400);
    expect(res.body?.code).toBe('VALIDATION_FAILED');
    const details = Array.isArray(res.body?.details) ? res.body.details : [];
    const categoryDetail = details.find((d: any) => d.path === 'categoryId');
    expect(categoryDetail).toBeDefined();
  });

  it('accepts a valid UUID categoryId and returns 201', async () => {
    const { agent, csrf } = await primeCsrf();
    const res = await agent
      .post('/api/v1/admin/challenges')
      .set('Authorization', `Bearer ${adminToken}`)
      .set('X-CSRF-Token', csrf)
      .send(wellFormedBody(validCategoryId));
    expect(res.status).toBe(201);
    expect(res.body?.id).toBeDefined();
    expect(res.body?.categoryId).toBe(validCategoryId);
  });
});