import { INestApplication } from '@nestjs/common';
import { AdminUserListView } from '@dorfteich/shared';
import { PrismaClient } from '@prisma/client';
import request from 'supertest';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';

import { PondsService } from '../ponds/ponds.service';
import { createTestApp, sessionCookieOf } from '../testing/test-app';
import { createTestPrisma, deletePondsWhere, hasTestDb, uniqueSuffix } from '../testing/test-db';
import { UsersService } from '../users/users.service';

/**
 * Site-Admin user management end to end (issue #59): disable logs a user out
 * and blocks login; delete pseudonymizes authorship and trashes the personal
 * pond; the last Site Admin and one's own account are protected.
 */
describe.skipIf(!hasTestDb)('user admin (e2e, issue #59)', () => {
  let app: INestApplication;
  let prisma: PrismaClient;
  const suffix = uniqueSuffix();
  const password = 'nutzerverwaltung ist ernst 1';
  const ids: Record<string, string> = {};
  const cookies: Record<string, string> = {};

  const api = () => request(app.getHttpServer());

  async function makeUser(handle: string, siteAdmin: boolean): Promise<void> {
    const users = app.get(UsersService);
    const username = `ua-${handle}-${suffix}`;
    const user = await users.createUser({
      username,
      email: `${username}@example.org`,
      displayName: `UA ${handle}`,
      password,
      locale: 'en',
    });
    await users.markEmailVerified(user.id);
    if (siteAdmin)
      await prisma.user.update({ where: { id: user.id }, data: { isSiteAdmin: true } });
    ids[handle] = user.id;
    cookies[handle] = sessionCookieOf(
      await api()
        .post('/api/v1/auth/login')
        .send({ usernameOrEmail: username, password })
        .expect(200),
    );
  }

  beforeAll(async () => {
    prisma = createTestPrisma();
    await prisma.rateLimit.deleteMany({});
    app = await createTestApp();
    await makeUser('admin1', true);
    await makeUser('admin2', true);
    await makeUser('bob', false);
    // Bob gets a personal pond (trashed on delete).
    await app
      .get(PondsService)
      .ensurePersonalPond(await prisma.user.findUniqueOrThrow({ where: { id: ids.bob! } }));
  });

  afterAll(async () => {
    const all = Object.values(ids);
    await prisma.session.deleteMany({ where: { userId: { in: all } } });
    await deletePondsWhere(prisma, { ownerId: { in: all } });
    await prisma.userIdentity.deleteMany({ where: { userId: { in: all } } });
    await prisma.user.deleteMany({ where: { id: { in: all } } });
    await prisma.$disconnect();
    await app.close();
  });

  it('lists and searches users (Site-Admin only)', async () => {
    const res = await api()
      .get(`/api/v1/admin/users?q=ua-bob-${suffix}`)
      .set('Cookie', cookies.admin1!)
      .expect(200);
    const body = res.body as AdminUserListView;
    expect(body.users.map((u) => u.id)).toContain(ids.bob);
    await api().get('/api/v1/admin/users').set('Cookie', cookies.bob!).expect(403);
  });

  it('disabling logs the user out everywhere and blocks login', async () => {
    await api()
      .patch(`/api/v1/admin/users/${ids.bob}/disabled`)
      .set('Cookie', cookies.admin1!)
      .send({ disabled: true })
      .expect(200);
    // Existing session is gone…
    await api().get('/api/v1/auth/me').set('Cookie', cookies.bob!).expect(401);
    // …and login is refused with a distinct code.
    await api()
      .post('/api/v1/auth/login')
      .send({ usernameOrEmail: `ua-bob-${suffix}`, password })
      .expect(403)
      .expect((r) => expect((r.body as { code: string }).code).toBe('account_disabled'));

    await api()
      .patch(`/api/v1/admin/users/${ids.bob}/disabled`)
      .set('Cookie', cookies.admin1!)
      .send({ disabled: false })
      .expect(200);
  });

  it('deleting pseudonymizes authorship and trashes the personal pond', async () => {
    await api().delete(`/api/v1/admin/users/${ids.bob}`).set('Cookie', cookies.admin1!).expect(204);
    const user = await prisma.user.findUniqueOrThrow({ where: { id: ids.bob! } });
    expect(user.displayName).toBe('Deleted user');
    expect(user.username).toBe(`deleted-${ids.bob}`);
    expect(user.status).toBe('DISABLED');
    const personal = await prisma.pond.findFirstOrThrow({
      where: { ownerId: ids.bob!, type: 'PERSONAL' },
    });
    expect(personal.deletedAt).not.toBeNull();
    // Credentials are gone → login impossible even with the old password.
    expect(await prisma.userIdentity.count({ where: { userId: ids.bob! } })).toBe(0);
  });

  it("protects the last Site Admin and one's own account", async () => {
    // Revoke admin2 → fine (admin1 remains).
    await api()
      .patch(`/api/v1/admin/users/${ids.admin2}/site-admin`)
      .set('Cookie', cookies.admin1!)
      .send({ isSiteAdmin: false })
      .expect(200);
    // Now admin1 is the last → cannot revoke self, and self-action is blocked anyway.
    await api()
      .patch(`/api/v1/admin/users/${ids.admin1}/site-admin`)
      .set('Cookie', cookies.admin1!)
      .send({ isSiteAdmin: false })
      .expect(400)
      .expect((r) => expect((r.body as { code: string }).code).toBe('cannot_modify_self'));
    await api()
      .delete(`/api/v1/admin/users/${ids.admin1}`)
      .set('Cookie', cookies.admin1!)
      .expect(400)
      .expect((r) => expect((r.body as { code: string }).code).toBe('cannot_modify_self'));
  });
});