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

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 { initDb } from './db-helper';
import { SettingsService } from '../../backend/src/modules/settings/settings.module';

describe('POST /api/v1/auth/register (player self-registration)', () => {
  let app: INestApplication;
  let settings: SettingsService;

  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));
    const httpAdapterHost = app.get(HttpAdapterHost);
    app.useGlobalFilters(new GlobalExceptionFilter(httpAdapterHost));
    await app.init();
    await initDb(app);
    settings = app.get(SettingsService);
    await settings.set('registrationsEnabled', 'true');
  });

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

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

  it('rejects without CSRF token', async () => {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    await agent.get('/api/v1/auth/csrf');
    await agent
      .post('/api/v1/auth/register')
      .send({ username: 'alice', password: 'Sup3rSecret!Pass', passwordConfirm: 'Sup3rSecret!Pass' })
      .expect(403);
  });

  it('registers a new player and returns a session', async () => {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    const csrf = await primeCsrf(agent);
    const res = await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf)
      .send({ username: 'alice', password: 'Sup3rSecret!Pass', passwordConfirm: 'Sup3rSecret!Pass' })
      .expect(201);
    expect(res.body.accessToken).toBeDefined();
    expect(res.body.user.username).toBe('alice');
    expect(res.body.user.role).toBe('player');
    const cookies: any = agent.jar.getCookies(CookieAccessInfo.All);
    expect(cookies.find((c: any) => c.name === 'rt')).toBeDefined();
  });

  it('rejects mismatched password confirmation', async () => {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    const csrf = await primeCsrf(agent);
    const res = await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf)
      .send({ username: 'bob', password: 'Sup3rSecret!Pass', passwordConfirm: 'OtherP4ss!' });
    expect(res.status).toBe(400);
    expect(res.body.code).toBe('VALIDATION_FAILED');
  });

  it('rejects weak password', async () => {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    const csrf = await primeCsrf(agent);
    const res = await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf)
      .send({ username: 'weak', password: 'short', passwordConfirm: 'short' });
    expect(res.status).toBe(400);
    expect(res.body.code).toBe('WEAK_PASSWORD');
  });

  it('rejects duplicate username', async () => {
    const server = app.getHttpServer();
    const agent = request.agent(server);
    const csrf = await primeCsrf(agent);
    await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf)
      .send({ username: 'carol', password: 'Sup3rSecret!Pass', passwordConfirm: 'Sup3rSecret!Pass' })
      .expect(201);
    const csrf2 = await primeCsrf(agent);
    const res = await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf2)
      .send({ username: 'carol', password: 'Sup3rSecret!Pass', passwordConfirm: 'Sup3rSecret!Pass' });
    expect(res.status).toBe(409);
    expect(res.body.code).toBe('USERNAME_TAKEN');
  });

  it('rejects when registrations are disabled', async () => {
    await settings.set('registrationsEnabled', 'false');
    const server = app.getHttpServer();
    const agent = request.agent(server);
    const csrf = await primeCsrf(agent);
    const res = await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf)
      .send({ username: 'dave', password: 'Sup3rSecret!Pass', passwordConfirm: 'Sup3rSecret!Pass' });
    expect(res.status).toBe(403);
    expect(res.body.code).toBe('REGISTRATIONS_DISABLED');
    await settings.set('registrationsEnabled', 'true');
  });

  it('rejects when per-IP registration rate limit exceeded', async () => {
    const { RegistrationRateLimitService } = await import('../../backend/src/common/services/registration-rate-limit.service');
    const rl = app.get(RegistrationRateLimitService);
    const now = Date.now();
    for (let i = 0; i < 10; i++) {
      rl.record('::ffff:127.0.0.1', now + i);
      rl.record('127.0.0.1', now + i);
    }
    const server = app.getHttpServer();
    const agent = request.agent(server);
    const csrf = await primeCsrf(agent);
    const res = await agent
      .post('/api/v1/auth/register')
      .set('X-CSRF-Token', csrf)
      .send({ username: 'eve', password: 'Sup3rSecret!Pass', passwordConfirm: 'Sup3rSecret!Pass' });
    expect(res.status).toBe(429);
    expect(res.body.code).toBe('RATE_LIMITED');
  });
});