import { generateKeyPairSync } from 'crypto';
import request from 'supertest';
import nock from 'nock';
import jwt from 'jsonwebtoken';

process.env.KEYCLOAK_BASE_URL = 'http://keycloak.test';
process.env.KEYCLOAK_REALM = 'scouthub';
process.env.KEYCLOAK_MAGAZZINO_CLIENT_ID = 'test-client';
process.env.KEYCLOAK_MAGAZZINO_CLIENT_SECRET = 'test-secret';
process.env.DATABASE_URL = 'postgresql://user:pass@localhost:5432/scouthub_magazzino_test';

const categoriaFindMany = jest.fn();
const categoriaFindUnique = jest.fn();
const categoriaCreate = jest.fn();
const categoriaUpdate = jest.fn();
const categoriaDelete = jest.fn();

jest.mock('../../src/db/prisma', () => ({
  prisma: {
    categoria: {
      findMany: (...args: unknown[]) => categoriaFindMany(...args),
      findUnique: (...args: unknown[]) => categoriaFindUnique(...args),
      create: (...args: unknown[]) => categoriaCreate(...args),
      update: (...args: unknown[]) => categoriaUpdate(...args),
      delete: (...args: unknown[]) => categoriaDelete(...args),
    },
  },
}));

import { app } from '../../src/app';

const KEYCLOAK_HOST = 'http://keycloak.test';
const CERTS_PATH = '/realms/scouthub/protocol/openid-connect/certs';
const KID = 'test-kid';

const { publicKey, privateKey } = generateKeyPairSync('rsa', { modulusLength: 2048 });
const jwk = publicKey.export({ format: 'jwk' }) as Record<string, unknown>;
const privateKeyPem = privateKey.export({ type: 'pkcs1', format: 'pem' }) as string;

function signToken(payload: object): string {
  return jwt.sign(payload, privateKeyPem, { algorithm: 'RS256', keyid: KID, expiresIn: '5m' });
}

function utenteToken(orgId = 'org-1'): string {
  return signToken({
    sub: 'user-1',
    realm_access: { roles: ['censito'] },
    organization: { 'gruppo-alfa': { id: orgId, roles: [] } },
  });
}

function adminCatalogoToken(): string {
  return signToken({
    sub: 'admin-1',
    realm_access: { roles: ['moderatore'] },
    organization: { 'gruppo-omega': { id: 'org-9', roles: [] } },
  });
}

beforeAll(() => {
  nock(KEYCLOAK_HOST).persist().get(CERTS_PATH).reply(200, {
    keys: [{ ...jwk, kid: KID, alg: 'RS256', use: 'sig' }],
  });
});

afterAll(() => {
  nock.cleanAll();
});

beforeEach(() => {
  jest.clearAllMocks();
});

describe('GET /categorie', () => {
  test('un utente normale non può accedere', async () => {
    const response = await request(app).get('/categorie').set('Authorization', `Bearer ${utenteToken()}`);

    expect(response.status).toBe(403);
    expect(categoriaFindMany).not.toHaveBeenCalled();
  });

  test('un moderatore vede tutte le categorie', async () => {
    categoriaFindMany.mockResolvedValueOnce([{ id: 'c-1', nome: 'Cucina', stato: 'confermata' }]);

    const response = await request(app).get('/categorie').set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(200);
    expect(response.body).toEqual([{ id: 'c-1', nome: 'Cucina', stato: 'confermata' }]);
  });

  test('risponde 401 senza token', async () => {
    const response = await request(app).get('/categorie');

    expect(response.status).toBe(401);
    expect(categoriaFindMany).not.toHaveBeenCalled();
  });
});

describe('POST /categorie', () => {
  test('un utente normale non può creare una categoria direttamente', async () => {
    const response = await request(app)
      .post('/categorie')
      .set('Authorization', `Bearer ${utenteToken()}`)
      .send({ nome: 'Campeggio' });

    expect(response.status).toBe(403);
    expect(categoriaCreate).not.toHaveBeenCalled();
  });

  test('un moderatore crea una categoria già confermata', async () => {
    categoriaCreate.mockResolvedValueOnce({ id: 'c-2', nome: 'Campeggio', stato: 'confermata' });

    const response = await request(app)
      .post('/categorie')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`)
      .send({ nome: 'Campeggio' });

    expect(response.status).toBe(201);
    expect(categoriaCreate).toHaveBeenCalledWith({ data: { nome: 'Campeggio', stato: 'confermata' } });
  });
});

describe('PUT /categorie/:id', () => {
  test('un moderatore può modificare una categoria', async () => {
    categoriaUpdate.mockResolvedValueOnce({ id: 'c-1', nome: 'Cucina da campo', stato: 'confermata' });

    const response = await request(app)
      .put('/categorie/c-1')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`)
      .send({ nome: 'Cucina da campo' });

    expect(response.status).toBe(200);
    expect(categoriaUpdate).toHaveBeenCalledWith({ where: { id: 'c-1' }, data: { nome: 'Cucina da campo' } });
  });
});

describe('DELETE /categorie/:id', () => {
  test('un moderatore può eliminare una categoria', async () => {
    categoriaDelete.mockResolvedValueOnce({ id: 'c-1' });

    const response = await request(app).delete('/categorie/c-1').set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(204);
    expect(categoriaDelete).toHaveBeenCalledWith({ where: { id: 'c-1' } });
  });
});

describe('POST /categorie/proposte', () => {
  test("un utente autenticato con un'org propone una categoria, che nasce 'da_approvare'", async () => {
    categoriaCreate.mockResolvedValueOnce({
      id: 'c-3',
      nome: 'Escursionismo',
      stato: 'da_approvare',
      creatoDaOrgId: 'org-1',
    });

    const response = await request(app)
      .post('/categorie/proposte')
      .set('Authorization', `Bearer ${utenteToken('org-1')}`)
      .send({ nome: 'Escursionismo' });

    expect(response.status).toBe(201);
    expect(response.body).toMatchObject({ stato: 'da_approvare', creatoDaOrgId: 'org-1' });
    expect(categoriaCreate).toHaveBeenCalledWith({
      data: { nome: 'Escursionismo', stato: 'da_approvare', creatoDaOrgId: 'org-1' },
    });
  });

  test('risponde 401 senza token', async () => {
    const response = await request(app).post('/categorie/proposte').send({ nome: 'Escursionismo' });

    expect(response.status).toBe(401);
    expect(categoriaCreate).not.toHaveBeenCalled();
  });
});

describe('POST /categorie/:id/approva', () => {
  test('un moderatore può approvare una categoria proposta', async () => {
    categoriaFindUnique.mockResolvedValueOnce({ id: 'c-3', nome: 'Escursionismo', stato: 'da_approvare' });
    categoriaUpdate.mockResolvedValueOnce({ id: 'c-3', nome: 'Escursionismo', stato: 'confermata' });

    const response = await request(app)
      .post('/categorie/c-3/approva')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(200);
    expect(response.body.stato).toBe('confermata');
    expect(categoriaUpdate).toHaveBeenCalledWith({ where: { id: 'c-3' }, data: { stato: 'confermata' } });
  });

  test('risponde 409 se la categoria è già confermata', async () => {
    categoriaFindUnique.mockResolvedValueOnce({ id: 'c-1', nome: 'Cucina', stato: 'confermata' });

    const response = await request(app)
      .post('/categorie/c-1/approva')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(409);
    expect(categoriaUpdate).not.toHaveBeenCalled();
  });

  test('risponde 404 se la categoria non esiste', async () => {
    categoriaFindUnique.mockResolvedValueOnce(null);

    const response = await request(app)
      .post('/categorie/inesistente/approva')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(404);
    expect(categoriaUpdate).not.toHaveBeenCalled();
  });
});

describe('POST /categorie/:id/rifiuta', () => {
  test('un moderatore può rifiutare una categoria proposta, che viene eliminata', async () => {
    categoriaFindUnique.mockResolvedValueOnce({ id: 'c-3', nome: 'Escursionismo', stato: 'da_approvare' });
    categoriaDelete.mockResolvedValueOnce({ id: 'c-3' });

    const response = await request(app)
      .post('/categorie/c-3/rifiuta')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(204);
    expect(categoriaDelete).toHaveBeenCalledWith({ where: { id: 'c-3' } });
  });

  test('risponde 409 se la categoria è già confermata', async () => {
    categoriaFindUnique.mockResolvedValueOnce({ id: 'c-1', nome: 'Cucina', stato: 'confermata' });

    const response = await request(app)
      .post('/categorie/c-1/rifiuta')
      .set('Authorization', `Bearer ${adminCatalogoToken()}`);

    expect(response.status).toBe(409);
    expect(categoriaDelete).not.toHaveBeenCalled();
  });
});