import { INestApplication } from '@nestjs/common';
import * as bcrypt from 'bcryptjs';
import request from 'supertest';
import { App } from 'supertest/types';
import { loadHerdApiaryRows } from '../src/compliance/herd-snapshot';
import { PrismaService } from '../src/prisma/prisma.service';
import { login } from './utils/api';
import { createTestApp } from './utils/create-test-app';

interface NoticeBody {
  id: string;
  kind: string;
  status: string;
  totalColonies: number;
  sentOn: string | null;
  openKey: string | null;
  existingId?: string;
  code?: string;
}

describe('Authority notices (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = Date.now();
  const password = 'SuperSecret123!';
  const beekeeperEmail = `notices-e2e-beekeeper-${suffix}@example.com`;
  const staffEmail = `notices-e2e-staff-${suffix}@example.com`;
  let beekeeperToken: string;
  let staffToken: string;
  let noRightsToken: string;
  let noRightsRoleId: string;
  const noRightsEmail = `notices-e2e-norights-${suffix}@example.com`;
  let apiaryId: string;
  let keyCounter = 0;

  const server = () => app.getHttpServer();
  const as = (token: string) => ({ Authorization: `Bearer ${token}` });
  const nextKey = () =>
    `notices-e2e-${suffix}-${(keyCounter += 1).toString().padStart(4, '0')}`;

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    const passwordHash = await bcrypt.hash(password, 12);
    for (const [email, roleKey] of [
      [beekeeperEmail, 'BEEKEEPER'],
      [staffEmail, 'STAFF'],
    ]) {
      await prisma.user.create({
        data: {
          email,
          passwordHash,
          name: roleKey,
          role: { connect: { key: roleKey } },
        },
      });
    }
    const role = await prisma.role.create({
      data: { key: `NOTICES_E2E_${suffix}`, name: 'Ohne Rechte' },
    });
    noRightsRoleId = role.id;
    await prisma.user.create({
      data: {
        email: noRightsEmail,
        passwordHash,
        name: 'NoRights',
        roleId: role.id,
      },
    });
    noRightsToken = (await login(app, noRightsEmail, password)).accessToken;
    beekeeperToken = (await login(app, beekeeperEmail, password)).accessToken;
    staffToken = (await login(app, staffEmail, password)).accessToken;
    const apiary = await prisma.apiary.create({
      data: { name: `Notices Stand ${suffix}` },
    });
    apiaryId = apiary.id;
    await prisma.colony.create({
      data: {
        code: `N-${suffix}`,
        apiaryId,
        colonyType: 'PRODUCTION_COLONY',
      },
    });
  });

  beforeEach(async () => {
    // The test database is shared and not empty: the notices are this file's
    // own table to clear.
    await prisma.authorityNotice.deleteMany();
  });

  afterAll(async () => {
    await prisma.authorityNotice.deleteMany();
    await prisma.colony.deleteMany({ where: { apiaryId } });
    await prisma.apiary.deleteMany({ where: { id: apiaryId } });
    await prisma.refreshToken.deleteMany({
      where: { user: { roleId: noRightsRoleId } },
    });
    await prisma.user.deleteMany({ where: { roleId: noRightsRoleId } });
    await prisma.role.deleteMany({ where: { id: noRightsRoleId } });
    await app.close();
  });

  async function livingCount(): Promise<number> {
    const rows = await loadHerdApiaryRows(prisma);
    return rows.reduce((sum, row) => sum + row.colonyTypes.length, 0);
  }

  it('two parallel creates of the same draft: one 201, one 409 with existingId', async () => {
    const send = () =>
      request(server())
        .post('/api/v1/authority-notices')
        .set(as(beekeeperToken))
        .set('Idempotency-Key', nextKey())
        .send({ kind: 'REGISTRATION' });

    const responses = await Promise.all([send(), send()]);

    const statuses = responses.map((response) => response.status).sort();
    expect(statuses).toEqual([201, 409]);
    const created = responses.find((response) => response.status === 201)!
      .body as NoticeBody;
    const conflict = responses.find((response) => response.status === 409)!
      .body as NoticeBody;
    expect(conflict.code).toBe('DRAFT_EXISTS');
    expect(conflict.existingId).toBe(created.id);
    expect(created).toMatchObject({
      status: 'DRAFT',
      openKey: 'REGISTRATION',
    });
    expect(created.totalColonies).toBeGreaterThan(0);
    expect(await prisma.authorityNotice.count()).toBe(1);
  });

  it('a repeated POST with the same Idempotency-Key returns the stored answer', async () => {
    const key = nextKey();
    const send = () =>
      request(server())
        .post('/api/v1/authority-notices')
        .set(as(beekeeperToken))
        .set('Idempotency-Key', key)
        .send({ kind: 'REGISTRATION' });

    const first = await send();
    const second = await send();

    expect(first.status).toBe(201);
    expect(second.status).toBe(201);
    expect((second.body as NoticeBody).id).toBe((first.body as NoticeBody).id);
    expect(await prisma.authorityNotice.count()).toBe(1);
  });

  it('BEEKEEPER manages notices, STAFF may read but gets 403 on POST', async () => {
    const created = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'REGISTRATION' })
      .expect(201);
    const id = (created.body as NoticeBody).id;

    await request(server())
      .post('/api/v1/authority-notices')
      .set(as(staffToken))
      .send({ kind: 'TSK_REPORT', year: 2027 })
      .expect(403);
    await request(server())
      .post(`/api/v1/authority-notices/${id}/cancel`)
      .set(as(staffToken))
      .expect(403);
    await request(server())
      .patch('/api/v1/compliance/settings')
      .set(as(staffToken))
      .send({ noticeOnApiaryChange: false })
      .expect(403);

    const list = await request(server())
      .get('/api/v1/authority-notices?kind=REGISTRATION')
      .set(as(staffToken))
      .expect(200);
    expect((list.body as NoticeBody[]).map((notice) => notice.id)).toContain(
      id,
    );
    await request(server())
      .get(`/api/v1/authority-notices/${id}`)
      .set(as(staffToken))
      .expect(200);
    await request(server())
      .get('/api/v1/compliance/settings')
      .set(as(staffToken))
      .expect(200);
  });

  it('a SENT registration with sentOn in the past is the baseline of the next herd change', async () => {
    await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'HERD_CHANGE' })
      .expect(409);

    const registration = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'REGISTRATION', sentOn: '2026-01-10' })
      .expect(201);
    expect(registration.body).toMatchObject({
      status: 'SENT',
      openKey: null,
      sentOn: '2026-01-10T00:00:00.000Z',
    });
    await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'REGISTRATION' })
      .expect(409);

    // The shared database may change meanwhile: the count lies between the
    // counts taken before and after the request.
    const before = await livingCount();
    const change = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'HERD_CHANGE' })
      .expect(201);
    const after = await livingCount();
    const body = change.body as NoticeBody;
    expect(body).toMatchObject({ kind: 'HERD_CHANGE', status: 'DRAFT' });
    expect(body.totalColonies).toBeGreaterThanOrEqual(Math.min(before, after));
    expect(body.totalColonies).toBeLessThanOrEqual(Math.max(before, after));
  });

  it('rejects a sent day in the future on create, mark-sent and patch', async () => {
    const message = 'Das Sendedatum darf nicht in der Zukunft liegen.';
    const future = '2999-01-01';
    const create = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'REGISTRATION', sentOn: future })
      .expect(400);
    expect((create.body as { message: string }).message).toBe(message);

    const draft = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'TSK_REPORT', year: 2031 })
      .expect(201);
    const url = `/api/v1/authority-notices/${(draft.body as NoticeBody).id}`;
    const markSent = await request(server())
      .post(`${url}/mark-sent`)
      .set(as(beekeeperToken))
      .send({ sentOn: future })
      .expect(400);
    expect((markSent.body as { message: string }).message).toBe(message);
    const patch = await request(server())
      .patch(url)
      .set(as(beekeeperToken))
      .send({ sentOn: future })
      .expect(400);
    expect((patch.body as { message: string }).message).toBe(message);

    const unchanged = await request(server())
      .get(url)
      .set(as(beekeeperToken))
      .expect(200);
    expect(unchanged.body).toMatchObject({ status: 'DRAFT', sentOn: null });
  });

  it('walks a draft through mark-sent, reopen and cancel', async () => {
    const created = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'TSK_REPORT', year: 2027 })
      .expect(201);
    const id = (created.body as NoticeBody).id;
    const url = `/api/v1/authority-notices/${id}`;

    await request(server())
      .post(`${url}/mark-sent`)
      .set(as(beekeeperToken))
      .send({ sentOn: '2026-02-01', sentVia: 'E-Mail' })
      .expect(201);
    await request(server())
      .post(`${url}/recount`)
      .set(as(beekeeperToken))
      .expect(409);
    await request(server())
      .patch(url)
      .set(as(beekeeperToken))
      .send({ totalColonies: 42 })
      .expect(200);
    const reopened = await request(server())
      .post(`${url}/reopen`)
      .set(as(beekeeperToken))
      .expect(201);
    expect(reopened.body).toMatchObject({
      status: 'DRAFT',
      totalColonies: 42,
      openKey: 'TSK_REPORT:2027',
    });
    await request(server())
      .post(`${url}/cancel`)
      .set(as(beekeeperToken))
      .expect(201);
    await request(server())
      .post(`${url}/mark-sent`)
      .set(as(beekeeperToken))
      .send({})
      .expect(409);
    await request(server())
      .patch(url)
      .set(as(beekeeperToken))
      .send({ notes: 'x' })
      .expect(409);

    const audit = await prisma.auditLog.findMany({
      where: { entityType: 'AuthorityNotice', entityId: id },
    });
    expect(audit.map((entry) => entry.action).sort()).toEqual([
      'CREATE',
      'UPDATE',
      'UPDATE',
      'UPDATE',
      'UPDATE',
    ]);
  });

  it('reopen answers 409 while another draft of the kind exists', async () => {
    const sent = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'TSK_REPORT', year: 2027, sentOn: '2026-02-01' })
      .expect(201);
    const draft = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'TSK_REPORT', year: 2027 })
      .expect(201);

    const reopen = await request(server())
      .post(`/api/v1/authority-notices/${(sent.body as NoticeBody).id}/reopen`)
      .set(as(beekeeperToken))
      .expect(409);

    expect((reopen.body as NoticeBody).existingId).toBe(
      (draft.body as NoticeBody).id,
    );
  });

  it('a notice recorded as sent is created although a draft is open', async () => {
    await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'TSK_REPORT', year: 2027 })
      .expect(201);

    await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'TSK_REPORT', year: 2027, sentOn: '2026-02-01' })
      .expect(201);
  });

  it('a user without compliance rights sees neither notices nor addresses', async () => {
    const created = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .send({ kind: 'REGISTRATION' })
      .expect(201);
    const id = (created.body as NoticeBody).id;

    await request(server())
      .get('/api/v1/authority-notices')
      .set(as(noRightsToken))
      .expect(403);
    await request(server())
      .get(`/api/v1/authority-notices/${id}`)
      .set(as(noRightsToken))
      .expect(403);
    await request(server())
      .get('/api/v1/compliance/settings')
      .set(as(noRightsToken))
      .expect(403);
  });

  it('validates the compliance settings', async () => {
    await request(server())
      .patch('/api/v1/compliance/settings')
      .set(as(beekeeperToken))
      .send({ tskReferenceDay: '02-29' })
      .expect(400);
    await request(server())
      .patch('/api/v1/compliance/settings')
      .set(as(beekeeperToken))
      .send({ noticeOnApiaryChange: null })
      .expect(400);

    const settings = await request(server())
      .patch('/api/v1/compliance/settings')
      .set(as(beekeeperToken))
      .send({ tskReferenceDay: '04-15', tskReportDueDay: null })
      .expect(200);

    expect(settings.body).toMatchObject({
      tskReferenceDay: '04-15',
      tskReportDueDay: null,
    });
    await request(server())
      .patch('/api/v1/compliance/settings')
      .set(as(beekeeperToken))
      .send({ tskReferenceDay: '01-01' })
      .expect(200);
  });

  it('GET /authority-notices/:id/pdf answers application/pdf with Cache-Control no-store and the file name anzeige-<id>.pdf', async () => {
    const created = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .set('Idempotency-Key', nextKey())
      .send({ kind: 'TSK_REPORT', year: 2027 })
      .expect(201);
    const id = (created.body as NoticeBody).id;

    const response = await request(server())
      .get(`/api/v1/authority-notices/${id}/pdf`)
      .set(as(staffToken))
      .buffer(true)
      .parse((res, callback) => {
        const chunks: Buffer[] = [];
        res.on('data', (chunk: Buffer) => chunks.push(chunk));
        res.on('end', () => callback(null, Buffer.concat(chunks)));
      })
      .expect(200);

    expect(response.headers['content-type']).toContain('application/pdf');
    expect(response.headers['cache-control']).toContain('no-store');
    expect(response.headers['content-disposition']).toBe(
      `attachment; filename="anzeige-${id}.pdf"`,
    );
    expect((response.body as Buffer).subarray(0, 4).toString('latin1')).toBe(
      '%PDF',
    );
    await request(server())
      .get('/api/v1/authority-notices/does-not-exist/pdf')
      .set(as(staffToken))
      .expect(404);
  });

  it('the pdf route needs compliance:read', async () => {
    const created = await request(server())
      .post('/api/v1/authority-notices')
      .set(as(beekeeperToken))
      .set('Idempotency-Key', nextKey())
      .send({ kind: 'REGISTRATION' })
      .expect(201);
    const id = (created.body as NoticeBody).id;

    await request(server())
      .get(`/api/v1/authority-notices/${id}/pdf`)
      .set(as(noRightsToken))
      .expect(403);
    await request(server())
      .get(`/api/v1/authority-notices/${id}/pdf`)
      .expect(401);
  });
});