import { randomUUID } from 'node:crypto';
import { INestApplication } from '@nestjs/common';
import { NestExpressApplication } from '@nestjs/platform-express';
import { Test } from '@nestjs/testing';
import * as bcrypt from 'bcryptjs';
import request from 'supertest';
import { App } from 'supertest/types';
import { berlinToday, dayToDate } from '../src/common/dates';
import type {
  ReadinessItem,
  ReadinessReport,
  ReadinessRule,
} from '../src/compliance/readiness/readiness.types';
import {
  READINESS_RULES,
  READINESS_RULES_TOKEN,
} from '../src/compliance/readiness/rules';
import { AppModule } from '../src/app.module';
import { configureApp } from '../src/app.config';
import { THROTTLER_NAMESPACE } from '../src/common/throttler/prisma-throttler.storage';
import { PrismaService } from '../src/prisma/prisma.service';
import { login } from './utils/api';

const READINESS = '/api/v1/compliance/readiness';
const ACKNOWLEDGEMENTS = '/api/v1/compliance/acknowledgements';
const SOFT_KEY = 'e2e-soft-check';

interface SiteFields {
  holderName: string | null;
  holderAddress: string | null;
  foodBusinessName: string | null;
  foodBusinessAddress: string | null;
}

describe('Compliance readiness (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = Date.now();
  const password = 'SuperSecret123!';
  const tokens: Record<string, string> = {};
  let apiaryOnlyRoleId: string;
  let apiaryId: string;
  let keyCounter = 0;
  let softValue = 1;
  let originalSite: SiteFields;
  let originalVetOffice: string | null | undefined;
  // Only rows this file created are ever deleted (the database is shared).
  const noticeIds: string[] = [];
  const restrictionIds: string[] = [];
  const acknowledgementIds: string[] = [];

  // A rule that can be acknowledged: the real ones of this task cannot, the
  // later ones will. It gives the acknowledgement flow a real database.
  const softRule: ReadinessRule = {
    key: SOFT_KEY,
    area: 'ETIKETTEN',
    severity: 'PRUEFEN',
    title: 'Testpunkt',
    legalBasis: null,
    acknowledgeable: true,
    evaluate: () => [
      {
        subjectId: 'global',
        detail: 'Bitte prüfen.',
        fingerprintParts: { value: softValue },
        subjects: [],
      },
    ],
  };

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

  async function report(user = 'beekeeper'): Promise<ReadinessReport> {
    const response = await request(server()).get(READINESS).set(as(user));
    expect(response.status).toBe(200);
    return response.body as ReadinessReport;
  }

  function itemOf(
    body: ReadinessReport,
    key: string,
    subjectId = 'global',
  ): ReadinessItem {
    const found = body.items.find(
      (item) => item.key === key && item.subjectId === subjectId,
    );
    if (!found) {
      throw new Error(`No readiness item ${key}/${subjectId}`);
    }
    return found;
  }

  function acknowledge(body: Record<string, string>, user = 'beekeeper') {
    return request(server())
      .post(ACKNOWLEDGEMENTS)
      .set(as(user))
      .set('Idempotency-Key', nextKey())
      .send(body);
  }

  async function createUser(
    name: string,
    roleWhere: { key: string } | { id: string },
  ) {
    const email = `readiness-e2e-${name}-${suffix}@example.com`;
    await prisma.user.create({
      data: {
        email,
        passwordHash: await bcrypt.hash(password, 12),
        name,
        role: { connect: roleWhere },
      },
    });
    tokens[name] = (await login(app, email, password)).accessToken;
  }

  // Settings rows are saved in beforeAll and put back in afterAll, never
  // deleted: other suites rely on the seeded rows.
  async function setSite(data: SiteFields) {
    await prisma.siteSettings.upsert({
      where: { id: 'singleton' },
      update: data,
      create: { id: 'singleton', ...data },
    });
  }

  async function setVetOffice(name: string | null) {
    await prisma.complianceSettings.upsert({
      where: { id: 'singleton' },
      update: { veterinaryOfficeName: name },
      create: { id: 'singleton', veterinaryOfficeName: name },
    });
  }

  async function removeOwnRows() {
    await prisma.complianceAcknowledgement.deleteMany({
      where: { id: { in: acknowledgementIds } },
    });
    await prisma.authorityNotice.deleteMany({
      where: { id: { in: noticeIds } },
    });
    await prisma.apiaryRestriction.deleteMany({
      where: { id: { in: restrictionIds } },
    });
    noticeIds.length = 0;
    restrictionIds.length = 0;
    acknowledgementIds.length = 0;
  }

  beforeAll(async () => {
    // The module gets the soft test rule through its token; the shared list
    // stays untouched.
    const moduleFixture = await Test.createTestingModule({
      imports: [AppModule],
    })
      .overrideProvider(THROTTLER_NAMESPACE)
      .useValue(randomUUID())
      .overrideProvider(READINESS_RULES_TOKEN)
      .useValue([...READINESS_RULES, softRule])
      .compile();
    const nest = moduleFixture.createNestApplication<NestExpressApplication>();
    configureApp(nest);
    await nest.init();
    app = nest;
    prisma = app.get(PrismaService);
    originalVetOffice = (
      await prisma.complianceSettings.findUnique({ where: { id: 'singleton' } })
    )?.veterinaryOfficeName;
    const site = await prisma.siteSettings.findUnique({
      where: { id: 'singleton' },
    });
    originalSite = {
      holderName: site?.holderName ?? null,
      holderAddress: site?.holderAddress ?? null,
      foodBusinessName: site?.foodBusinessName ?? null,
      foodBusinessAddress: site?.foodBusinessAddress ?? null,
    };
    await createUser('beekeeper', { key: 'BEEKEEPER' });
    await createUser('staff', { key: 'STAFF' });
    await createUser('readonly', { key: 'READONLY' });
    await createUser('apiclient', { key: 'API_CLIENT' });
    // compliance:read only, without apiaries:read.
    const role = await prisma.role.create({
      data: { key: `READINESS_E2E_${suffix}`, name: 'Nur Prüfbereitschaft' },
    });
    apiaryOnlyRoleId = role.id;
    const permission = await prisma.permission.findFirstOrThrow({
      where: { key: 'compliance:read' },
    });
    await prisma.rolePermission.create({
      data: { roleId: role.id, permissionId: permission.id },
    });
    await createUser('complianceonly', { id: role.id });
    const apiary = await prisma.apiary.create({
      data: { name: `Readiness Stand ${suffix}` },
    });
    apiaryId = apiary.id;
  });

  beforeEach(async () => {
    await removeOwnRows();
    softValue = 1;
  });

  afterAll(async () => {
    await removeOwnRows();
    await setSite(originalSite);
    if (originalVetOffice !== undefined) {
      await setVetOffice(originalVetOffice);
    }
    await prisma.apiary.deleteMany({ where: { id: apiaryId } });
    const mine = {
      email: {
        startsWith: 'readiness-e2e-',
        endsWith: `-${suffix}@example.com`,
      },
    };
    const userIds = (
      await prisma.user.findMany({ where: mine, select: { id: true } })
    ).map((user) => user.id);
    await prisma.refreshToken.deleteMany({
      where: { userId: { in: userIds } },
    });
    await prisma.user.deleteMany({ where: { id: { in: userIds } } });
    await prisma.rolePermission.deleteMany({
      where: { roleId: apiaryOnlyRoleId },
    });
    await prisma.role.deleteMany({ where: { id: apiaryOnlyRoleId } });
    await app.close();
  });

  it('without site data and without a SENT registration the Stammdaten and registration items are open and the status is OPEN', async () => {
    await setSite({
      holderName: null,
      holderAddress: null,
      foodBusinessName: null,
      foodBusinessAddress: null,
    });
    await setVetOffice(null);
    // Rows of other suites stay: the registration follows what exists.
    const sentRegistrations = await prisma.authorityNotice.count({
      where: { kind: 'REGISTRATION', status: 'SENT' },
    });

    const body = await report();

    for (const key of ['holder-data', 'food-business-data']) {
      expect(itemOf(body, key)).toMatchObject({ state: 'OPEN' });
    }
    expect(itemOf(body, 'registration').state).toBe(
      sentRegistrations === 0 ? 'OPEN' : 'DONE',
    );
    expect(itemOf(body, 'holder-data').subjects[0].missing).toEqual([
      'Name',
      'Anschrift',
    ]);
    expect(itemOf(body, 'vet-office').state).toBe('OPEN');
    expect(body.status).toBe('OPEN');
    expect(body.openCount).toBeGreaterThanOrEqual(3);
    expect(Number.isNaN(Date.parse(body.generatedAt))).toBe(false);

    const summary = await request(server())
      .get(`${READINESS}/summary`)
      .set(as('beekeeper'));
    expect(summary.status).toBe(200);
    expect(summary.body).toMatchObject({ status: 'OPEN' });
    expect((summary.body as { firstItemKey: string }).firstItemKey).toEqual(
      expect.any(String),
    );
  });

  it('complete master data and a SENT registration make those items DONE', async () => {
    await setSite({
      holderName: 'Imker E2E',
      holderAddress: 'Weg 1, 12345 Ort',
      foodBusinessName: 'Imkerei E2E',
      foodBusinessAddress: 'Weg 2, 12345 Ort',
    });
    await setVetOffice('Amt E2E');
    const sent = await prisma.authorityNotice.create({
      data: {
        kind: 'REGISTRATION',
        status: 'SENT',
        referenceDate: dayToDate('2026-01-01'),
        countedAt: new Date('2026-01-01T10:00:00.000Z'),
        snapshot: { version: 1, takenAt: 'x', apiaries: [], totalLiving: 0 },
        totalColonies: 0,
        sentOn: dayToDate('2026-01-02'),
      },
    });
    noticeIds.push(sent.id);

    const body = await report();

    for (const key of [
      'holder-data',
      'food-business-data',
      'vet-office',
      'registration',
    ]) {
      expect(itemOf(body, key)).toMatchObject({
        state: 'DONE',
        subjects: [],
        more: 0,
      });
    }
  });

  it('READONLY may read the report but gets 403 acknowledging; STAFF gets 403 on acknowledgements; API_CLIENT gets 403 everywhere', async () => {
    const payload = {
      itemKey: SOFT_KEY,
      subjectId: 'global',
      fingerprint: 'a'.repeat(64),
      note: 'Geprüft und in Ordnung.',
    };

    expect((await report('readonly')).items.length).toBeGreaterThan(0);
    expect((await report('staff')).items.length).toBeGreaterThan(0);
    expect((await acknowledge(payload, 'readonly')).status).toBe(403);
    expect((await acknowledge(payload, 'staff')).status).toBe(403);
    expect(
      (
        await request(server())
          .post(`${ACKNOWLEDGEMENTS}/someid/revoke`)
          .set(as('staff'))
      ).status,
    ).toBe(403);
    for (const path of [READINESS, `${READINESS}/summary`]) {
      expect(
        (await request(server()).get(path).set(as('apiclient'))).status,
      ).toBe(403);
    }
    expect((await acknowledge(payload, 'apiclient')).status).toBe(403);
    expect((await request(server()).get(READINESS)).status).toBe(401);
  });

  it('shows the apiaries of an active restriction only with apiaries:read, but counts them for everyone', async () => {
    const created = await prisma.apiaryRestriction.create({
      data: {
        apiaryId,
        disease: 'Faulbrut',
        authority: 'Amt Geheim',
        startsOn: dayToDate(berlinToday()),
      },
    });
    restrictionIds.push(created.id);

    const full = itemOf(await report('beekeeper'), 'restriction-active');
    const masked = itemOf(await report('complianceonly'), 'restriction-active');

    expect(full.state).toBe('OPEN');
    expect(full.subjects.map((subject) => subject.id)).toContain(apiaryId);
    expect(masked.state).toBe('OPEN');
    expect(masked.subjects).toEqual([]);
    expect(masked.more).toBeGreaterThanOrEqual(1);
    expect(JSON.stringify(masked)).not.toContain('Readiness Stand');
    expect(JSON.stringify(masked)).not.toContain('Amt Geheim');
    expect(JSON.stringify(full)).not.toContain('Amt Geheim');
  });

  it('an ended restriction does not keep the item open', async () => {
    const ended = await prisma.apiaryRestriction.create({
      data: {
        apiaryId,
        disease: 'Faulbrut',
        startsOn: dayToDate('2020-01-01'),
        endsOn: dayToDate('2020-02-01'),
      },
    });
    restrictionIds.push(ended.id);

    const body = await report();

    expect(
      body.items
        .find((item) => item.key === 'restriction-active')
        ?.subjects.map((subject) => subject.id) ?? [],
    ).not.toContain(apiaryId);
  });

  describe('acknowledgements', () => {
    it('refuses a PFLICHT item, an unknown item and a short note with 400', async () => {
      const body = await report();
      const holder = itemOf(body, 'holder-data');
      const soft = itemOf(body, SOFT_KEY);

      const pflicht = await acknowledge({
        itemKey: 'holder-data',
        subjectId: 'global',
        fingerprint: holder.fingerprint,
        note: 'Geprüft und in Ordnung.',
      });
      const unknown = await acknowledge({
        itemKey: 'no-such-item',
        subjectId: 'global',
        fingerprint: soft.fingerprint,
        note: 'Geprüft und in Ordnung.',
      });
      const shortNote = await acknowledge({
        itemKey: SOFT_KEY,
        subjectId: 'global',
        fingerprint: soft.fingerprint,
        note: 'kurz',
      });

      expect(pflicht.status).toBe(400);
      expect(unknown.status).toBe(400);
      expect(shortNote.status).toBe(400);
    });

    it('acknowledges with the current fingerprint, reopens on changed data, and a revoke reopens it', async () => {
      const before = itemOf(await report(), SOFT_KEY);

      const stale = await acknowledge({
        itemKey: SOFT_KEY,
        subjectId: 'global',
        fingerprint: 'b'.repeat(64),
        note: 'Geprüft und in Ordnung.',
      });
      const created = await acknowledge({
        itemKey: SOFT_KEY,
        subjectId: 'global',
        fingerprint: before.fingerprint,
        note: 'Geprüft und in Ordnung.',
      });

      expect(stale.status).toBe(409);
      expect(created.status).toBe(201);
      const createdItem = created.body as ReadinessItem;
      expect(createdItem.state).toBe('ACKNOWLEDGED');
      const acknowledgementId = createdItem.acknowledgement!.id;
      acknowledgementIds.push(acknowledgementId);
      expect(itemOf(await report(), SOFT_KEY)).toMatchObject({
        state: 'ACKNOWLEDGED',
        acknowledgement: { id: acknowledgementId },
      });
      expect(
        await prisma.auditLog.count({
          where: {
            entityType: 'ComplianceAcknowledgement',
            entityId: acknowledgementId,
            action: 'CREATE',
          },
        }),
      ).toBe(1);

      softValue = 2;
      expect(itemOf(await report(), SOFT_KEY).state).toBe('OPEN');
      softValue = 1;
      expect(itemOf(await report(), SOFT_KEY).state).toBe('ACKNOWLEDGED');

      const revoke = () =>
        request(server())
          .post(`${ACKNOWLEDGEMENTS}/${acknowledgementId}/revoke`)
          .set(as('beekeeper'));
      expect((await revoke()).status).toBe(201);
      expect(itemOf(await report(), SOFT_KEY).state).toBe('OPEN');
      expect((await revoke()).status).toBe(409);
      const row = await prisma.complianceAcknowledgement.findUniqueOrThrow({
        where: { id: acknowledgementId },
      });
      expect(row.revokedAt).not.toBeNull();
      expect(row.revokedByUserId).not.toBeNull();
    });

    it('revoking an unknown acknowledgement is a 404', async () => {
      const response = await request(server())
        .post(`${ACKNOWLEDGEMENTS}/does-not-exist/revoke`)
        .set(as('beekeeper'));

      expect(response.status).toBe(404);
    });
  });
});