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

interface TreatmentBody {
  id: string;
  colonyId: string;
  startDate: string | null;
  endDate: string | null;
}

interface WithdrawalStatusBody {
  colonyId: string;
  activeUntil: string;
  product: string;
}

describe('Treatments (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const beekeeperEmail = `treatments-e2e-beekeeper-${Date.now()}@example.com`;
  const staffEmail = `treatments-e2e-staff-${Date.now()}@example.com`;
  const password = 'SuperSecret123!';
  let beekeeperId: string;
  let staffId: string;
  let beekeeperToken: string;
  let staffToken: string;
  let apiaryId: string;
  let colonyId: string;
  let treatmentId: string;

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);

    const passwordHash = await bcrypt.hash(password, 12);
    const beekeeper = await prisma.user.create({
      data: {
        email: beekeeperEmail,
        passwordHash,
        name: 'Beekeeper',
        role: { connect: { key: 'BEEKEEPER' } },
      },
    });
    beekeeperId = beekeeper.id;
    const staff = await prisma.user.create({
      data: {
        email: staffEmail,
        passwordHash,
        name: 'Staff',
        role: { connect: { key: 'STAFF' } },
      },
    });
    staffId = staff.id;
    beekeeperToken = (await login(app, beekeeperEmail, password)).accessToken;
    staffToken = (await login(app, staffEmail, password)).accessToken;

    const apiary = await prisma.apiary.create({
      data: { name: `Stand ${Date.now()}` },
    });
    apiaryId = apiary.id;
    const colony = await prisma.colony.create({
      data: {
        code: `V-${Date.now()}`,
        apiaryId,
        colonyType: 'PRODUCTION_COLONY',
      },
    });
    colonyId = colony.id;
  });

  afterAll(async () => {
    await prisma.treatment.deleteMany({ where: { colonyId } });
    await prisma.colony.deleteMany({ where: { id: colonyId } });
    await prisma.apiary.deleteMany({ where: { id: apiaryId } });
    await prisma.refreshToken.deleteMany({
      where: { userId: { in: [beekeeperId, staffId] } },
    });
    await prisma.auditLog.deleteMany({
      where: { userId: { in: [beekeeperId, staffId] } },
    });
    await prisma.user.deleteMany({
      where: { id: { in: [beekeeperId, staffId] } },
    });
    await app.close();
  });

  it('rejects create for a STAFF user', () => {
    return request(app.getHttpServer())
      .post('/api/v1/treatments')
      .set('Authorization', `Bearer ${staffToken}`)
      .send({
        colonyId,
        date: new Date().toISOString(),
        product: 'Ameisensäure',
      })
      .expect(403);
  });

  it('lets a BEEKEEPER user record a treatment', async () => {
    const response = await request(app.getHttpServer())
      .post('/api/v1/treatments')
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .send({
        colonyId,
        date: new Date().toISOString(),
        product: 'Ameisensäure',
        amount: '15 ml',
      })
      .expect(201);
    treatmentId = (response.body as TreatmentBody).id;
    expect(treatmentId).toEqual(expect.any(String));
  });

  it('lists treatments for the colony', async () => {
    const response = await request(app.getHttpServer())
      .get(`/api/v1/colonies/${colonyId}/treatments`)
      .set('Authorization', `Bearer ${staffToken}`)
      .expect(200);
    const treatments = response.body as TreatmentBody[];
    expect(treatments.some((entry) => entry.id === treatmentId)).toBe(true);
  });

  it('clears start and end date on null and audits the edit', async () => {
    await request(app.getHttpServer())
      .patch(`/api/v1/treatments/${treatmentId}`)
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .send({ startDate: '2026-07-01', endDate: '2026-07-14' })
      .expect(200);

    const response = await request(app.getHttpServer())
      .patch(`/api/v1/treatments/${treatmentId}`)
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .send({ startDate: null, endDate: null })
      .expect(200);
    const treatment = response.body as TreatmentBody;
    expect(treatment.startDate).toBeNull();
    expect(treatment.endDate).toBeNull();
    const auditEntry = await prisma.auditLog.findFirst({
      where: {
        entityType: 'Treatment',
        entityId: treatmentId,
        action: 'UPDATE',
        userId: beekeeperId,
      },
      orderBy: { timestamp: 'desc' },
    });
    expect(auditEntry?.afterData).toEqual(
      expect.objectContaining({ startDate: null, endDate: null }),
    );
  });

  it.each(['date', 'product'])('rejects null for the required %s', (field) =>
    request(app.getHttpServer())
      .patch(`/api/v1/treatments/${treatmentId}`)
      .set('Authorization', `Bearer ${beekeeperToken}`)
      .send({ [field]: null })
      .expect(400),
  );

  describe('withdrawal status for a harvest date', () => {
    async function withdrawalStatusAt(at?: string) {
      const response = await request(app.getHttpServer())
        .get('/api/v1/treatments/withdrawal-status')
        .query(
          at === undefined
            ? { colonyIds: colonyId }
            : { colonyIds: colonyId, at },
        )
        .set('Authorization', `Bearer ${staffToken}`)
        .expect(200);
      return response.body as WithdrawalStatusBody[];
    }

    beforeAll(async () => {
      // Ended 2026-07-01 with 14 days withdrawal: harvestable from 2026-07-15.
      await request(app.getHttpServer())
        .post('/api/v1/treatments')
        .set('Authorization', `Bearer ${beekeeperToken}`)
        .send({
          colonyId,
          date: '2026-06-20',
          endDate: '2026-07-01',
          product: 'Oxalsäure',
          withdrawalPeriodDays: 14,
        })
        .expect(201);
    });

    it('reports the window as active on a harvest date inside it', async () => {
      await expect(withdrawalStatusAt('2026-07-10')).resolves.toEqual([
        {
          colonyId,
          activeUntil: '2026-07-15T00:00:00.000Z',
          product: 'Oxalsäure',
        },
      ]);
    });

    it('accepts a full ISO timestamp', async () => {
      await expect(
        withdrawalStatusAt('2026-07-14T23:59:59.000Z'),
      ).resolves.toHaveLength(1);
    });

    it('reports nothing once the window has ended by the harvest date', async () => {
      await expect(withdrawalStatusAt('2026-07-15')).resolves.toEqual([]);
    });

    it('ignores a treatment that starts after the harvest date', async () => {
      await expect(withdrawalStatusAt('2026-06-01')).resolves.toEqual([]);
    });

    it('evaluates against now without a date', async () => {
      await expect(withdrawalStatusAt()).resolves.toEqual([]);
    });

    it('rejects asking for more than 200 colonies at once', async () => {
      const ids = Array.from(
        { length: 201 },
        (_, index) => `cl${index.toString().padStart(23, '0')}`,
      );
      const response = await request(app.getHttpServer())
        .get('/api/v1/treatments/withdrawal-status')
        .query({ colonyIds: ids.join(',') })
        .set('Authorization', `Bearer ${staffToken}`)
        .expect(400);
      expect(JSON.stringify(response.body)).toContain(
        'colonyIds darf höchstens 200 Volk-IDs enthalten',
      );
    });

    it.each(["colony'a", 'colony;drop', 'c'.repeat(65)])(
      'rejects the invalid colony id %s',
      (badId) =>
        request(app.getHttpServer())
          .get('/api/v1/treatments/withdrawal-status')
          .query({ colonyIds: `${colonyId},${badId}` })
          .set('Authorization', `Bearer ${staffToken}`)
          .expect(400),
    );

    it.each(['gestern', '2026-02-30', '20260715', '2026-07-15T10Z', '2026'])(
      'rejects the invalid date %s',
      (at) =>
        request(app.getHttpServer())
          .get('/api/v1/treatments/withdrawal-status')
          .query({ colonyIds: colonyId, at })
          .set('Authorization', `Bearer ${staffToken}`)
          .expect(400),
    );
  });

  describe('GET /treatments/last-by-product', () => {
    const productName = `Oxuvar-${Date.now()}`;

    const lastByProduct = (token: string, product?: string) =>
      request(app.getHttpServer())
        .get('/api/v1/treatments/last-by-product')
        .query(product === undefined ? {} : { product })
        .set('Authorization', `Bearer ${token}`);

    beforeAll(async () => {
      await prisma.treatment.createMany({
        data: [
          {
            colonyId,
            userId: beekeeperId,
            date: new Date('2026-05-01T00:00:00.000Z'),
            product: productName,
            supplier: 'Alt GmbH',
          },
          {
            colonyId,
            userId: beekeeperId,
            date: new Date('2026-06-01T00:00:00.000Z'),
            product: productName,
            activeIngredient: 'Oxalsäure',
            withdrawalPeriodDays: 0,
            supplier: 'Neu GmbH',
            purchaseProof: 'RE-2026-17',
            prescribingVet: 'Dr. Imker',
          },
          {
            colonyId,
            userId: staffId,
            date: new Date('2026-07-01T00:00:00.000Z'),
            product: productName,
            supplier: 'Fremd GmbH',
          },
        ],
      });
    });

    it("returns the caller's newest treatment with that product, case-insensitive", async () => {
      const response = await lastByProduct(
        beekeeperToken,
        ` ${productName.toLowerCase()} `,
      ).expect(200);
      const newest = await prisma.treatment.findFirstOrThrow({
        where: {
          userId: beekeeperId,
          product: productName,
          supplier: 'Neu GmbH',
        },
        select: { id: true },
      });

      expect(response.body).toEqual({
        treatment: {
          sourceTreatmentId: newest.id,
          sourceDate: '2026-06-01T00:00:00.000Z',
          product: productName,
          activeIngredient: 'Oxalsäure',
          withdrawalPeriodDays: 0,
          supplier: 'Neu GmbH',
          purchaseProof: 'RE-2026-17',
          prescribingVet: 'Dr. Imker',
        },
      });
    });

    it("never returns another user's treatment", async () => {
      const response = await lastByProduct(beekeeperToken, productName).expect(
        200,
      );

      expect(JSON.stringify(response.body)).not.toContain('Fremd GmbH');
    });

    it('returns { treatment: null } without a match', async () => {
      const response = await lastByProduct(
        beekeeperToken,
        `Unbekannt-${Date.now()}`,
      ).expect(200);

      expect(response.body).toEqual({ treatment: null });
    });

    it('rejects a request without product', () =>
      lastByProduct(beekeeperToken).expect(400));

    it('rejects an empty product', () =>
      lastByProduct(beekeeperToken, '   ').expect(400));

    it('rejects a role without treatments:create', () =>
      lastByProduct(staffToken, productName).expect(403));
  });
});