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';
import { drainDomainEvents } from './utils/domain-events';

interface BandBody {
  yellowFrom: number | null;
  redAbove: number;
  reason: string;
  youngColony: boolean;
}

interface ThresholdsBody {
  day: string;
  active: boolean;
  bands: Record<string, BandBody | undefined>;
  postTreatmentUntil: string | null;
}

interface RatedMeasurementBody {
  id: string;
  rating: {
    light: string | null;
    reasonCode: string | null;
    band: BandBody | null;
    postTreatmentUntil: string | null;
  };
}

describe('Varroa seasonal bands (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = Date.now();
  const email = `varroa-seasonal-${suffix}@example.com`;
  const password = 'SuperSecret123!';
  let userId: string;
  let token: string;
  let apiaryId: string;
  let productionColonyId: string;
  let youngColonyId: string;
  // Colonies of the rule cases: one per case, so no open suggestion of an
  // earlier case keeps a later one from appearing.
  const ruleColonyIds: string[] = [];

  const get = (path: string) =>
    request(app.getHttpServer())
      .get(`/api/v1${path}`)
      .set('Authorization', `Bearer ${token}`);

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    const user = await prisma.user.create({
      data: {
        email,
        passwordHash: await bcrypt.hash(password, 12),
        name: 'Varroa seasonal',
        role: { connect: { key: 'BEEKEEPER' } },
      },
    });
    userId = user.id;
    token = (await login(app, email, password)).accessToken;
    apiaryId = (
      await prisma.apiary.create({ data: { name: `Stand ${suffix}` } })
    ).id;
    productionColonyId = (
      await prisma.colony.create({
        data: {
          code: `VS-P-${suffix}`,
          apiaryId,
          colonyType: 'PRODUCTION_COLONY',
        },
      })
    ).id;
    youngColonyId = (
      await prisma.colony.create({
        data: { code: `VS-Y-${suffix}`, apiaryId, colonyType: 'YOUNG_COLONY' },
      })
    ).id;
  });

  afterAll(async () => {
    const colonyIds = [productionColonyId, youngColonyId, ...ruleColonyIds];
    const measurementIds = (
      await prisma.varroaMeasurement.findMany({
        where: { colonyId: { in: colonyIds } },
        select: { id: true },
      })
    ).map((measurement) => measurement.id);
    const suggestionIds = (
      await prisma.suggestion.findMany({
        where: { colonyId: { in: colonyIds } },
        select: { id: true },
      })
    ).map((suggestion) => suggestion.id);
    await prisma.notification.deleteMany({
      where: { relatedType: 'Suggestion', relatedId: { in: suggestionIds } },
    });
    await prisma.auditLog.deleteMany({
      where: {
        OR: [
          { entityType: 'Suggestion', entityId: { in: suggestionIds } },
          ...colonyIds.map((id) => ({
            entityType: 'AutomationRule',
            afterData: { path: ['relatedId'], equals: id },
          })),
        ],
      },
    });
    await prisma.suggestion.deleteMany({
      where: { colonyId: { in: colonyIds } },
    });
    await prisma.domainEvent.deleteMany({
      where: { aggregateId: { in: measurementIds } },
    });
    await prisma.treatment.deleteMany({
      where: { colonyId: { in: colonyIds } },
    });
    await prisma.varroaMeasurement.deleteMany({
      where: { colonyId: { in: colonyIds } },
    });
    await prisma.colony.deleteMany({ where: { id: { in: colonyIds } } });
    await prisma.apiary.deleteMany({ where: { id: apiaryId } });
    await prisma.refreshToken.deleteMany({ where: { userId } });
    await prisma.auditLog.deleteMany({ where: { userId } });
    await prisma.user.deleteMany({ where: { id: userId } });
    await app.close();
  });

  it('thresholds for a young colony are halved', async () => {
    const full = (
      await get(
        `/varroa-measurements/thresholds?colonyId=${productionColonyId}&date=2026-06-10`,
      ).expect(200)
    ).body as ThresholdsBody;
    const young = (
      await get(
        `/varroa-measurements/thresholds?colonyId=${youngColonyId}&date=2026-06-10`,
      ).expect(200)
    ).body as ThresholdsBody;

    expect(full.bands.NATURAL_MITE_FALL).toMatchObject({
      yellowFrom: 5,
      redAbove: 10,
      reason: 'NATURAL_FALL_SEASON',
      youngColony: false,
    });
    expect(young.bands.NATURAL_MITE_FALL).toMatchObject({
      yellowFrom: 2.5,
      redAbove: 5,
      youngColony: true,
    });
  });

  it('thresholds return no band for powdered sugar in April', async () => {
    const body = (
      await get(
        `/varroa-measurements/thresholds?colonyId=${productionColonyId}&date=2026-04-10`,
      ).expect(200)
    ).body as ThresholdsBody;

    expect(body.bands.POWDERED_SUGAR).toBeUndefined();
    expect(body.bands.NATURAL_MITE_FALL).toBeDefined();
  });

  it('thresholds reject an unknown colony and an invalid date', async () => {
    await get('/varroa-measurements/thresholds?colonyId=unknown').expect(404);
    await get('/varroa-measurements/thresholds?date=2026-02-30').expect(400);
    await get('/varroa-measurements/thresholds?date=10.08.2026').expect(400);
  });

  describe('range form', () => {
    interface SegmentsBody {
      segments: {
        from: string;
        to: string;
        bands: Record<string, unknown>;
        postTreatmentUntil: string | null;
        active: boolean;
      }[];
    }
    const range = (query: string) =>
      get(`/varroa-measurements/thresholds?${query}`);

    it('returns merged segments split at the season edges', async () => {
      const body = (
        await range(
          `colonyId=${productionColonyId}&from=2026-10-30&to=2026-11-02`,
        ).expect(200)
      ).body as SegmentsBody;

      expect(body.segments.map((s) => [s.from, s.to, s.active])).toEqual([
        ['2026-10-30', '2026-10-31', true],
        ['2026-11-01', '2026-11-02', true],
      ]);
      expect(body.segments[0].bands.NATURAL_MITE_FALL).toMatchObject({
        reason: 'NATURAL_FALL_SEASON',
      });
      expect(body.segments[1].bands.NATURAL_MITE_FALL).toMatchObject({
        reason: 'NATURAL_FALL_WINTER',
      });
    });

    it('accepts 731 days and rejects 732', async () => {
      await range('from=2025-01-01&to=2027-01-01').expect(200);
      await range('from=2025-01-01&to=2027-01-02').expect(400);
    });

    it('rejects from after to, a missing bound, a mix with date and a bad day', async () => {
      await range('from=2026-06-02&to=2026-06-01').expect(400);
      await range('from=2026-06-02').expect(400);
      await range('to=2026-06-02').expect(400);
      await range('date=2026-06-01&from=2026-06-01&to=2026-06-02').expect(400);
      await range('from=2026-02-30&to=2026-03-05').expect(400);
      await range('colonyId=unknown&from=2026-06-01&to=2026-06-02').expect(404);
    });
  });

  it('the old /threshold route is gone (404)', async () => {
    await get('/varroa-measurements/threshold').expect(404);
  });

  it('colony measurements carry a rating with band and light', async () => {
    const create = (body: object) =>
      request(app.getHttpServer())
        .post('/api/v1/varroa-measurements')
        .set('Authorization', `Bearer ${token}`)
        .send(body)
        .expect(201);
    const red = (
      await create({
        colonyId: productionColonyId,
        date: '2026-08-10T00:00:00.000Z',
        method: 'NATURAL_MITE_FALL',
        miteCount: 22,
        durationMinutes: 1440,
      })
    ).body as { id: string; calculatedValue: number };
    const percent = (
      await create({
        colonyId: productionColonyId,
        date: '2026-07-10T00:00:00.000Z',
        method: 'POWDERED_SUGAR',
        miteCount: 10,
        sampleBees: 500,
      })
    ).body as { id: string; calculatedValue: number };
    expect(percent.calculatedValue).toBe(2);

    const rated = (
      await get(`/colonies/${productionColonyId}/varroa-measurements`).expect(
        200,
      )
    ).body as RatedMeasurementBody[];

    const byId = new Map(rated.map((entry) => [entry.id, entry.rating]));
    expect(byId.get(red.id)).toMatchObject({
      light: 'red',
      reasonCode: 'NATURAL_FALL_SEASON',
      band: { yellowFrom: 5, redAbove: 10 },
      postTreatmentUntil: null,
    });
    expect(byId.get(percent.id)).toMatchObject({
      light: 'yellow',
      reasonCode: 'INFESTATION_SUMMER',
    });
  });

  it('a measurement after a treatment has no light and names the recheck day', async () => {
    await prisma.treatment.create({
      data: {
        colonyId: youngColonyId,
        userId,
        date: new Date('2026-08-02T00:00:00.000Z'),
        startDate: new Date('2026-07-20T00:00:00.000Z'),
        product: 'Oxuvar',
      },
    });
    const created = (
      await request(app.getHttpServer())
        .post('/api/v1/varroa-measurements')
        .set('Authorization', `Bearer ${token}`)
        .send({
          colonyId: youngColonyId,
          date: '2026-08-07T00:00:00.000Z',
          method: 'NATURAL_MITE_FALL',
          calculatedValue: 12,
        })
        .expect(201)
    ).body as { id: string };

    const rated = (
      await get(`/colonies/${youngColonyId}/varroa-measurements`).expect(200)
    ).body as RatedMeasurementBody[];

    expect(rated.find((entry) => entry.id === created.id)?.rating).toEqual({
      light: 'POST_TREATMENT',
      reasonCode: 'POST_TREATMENT',
      band: null,
      postTreatmentUntil: '2026-08-16',
    });
  });
  describe('the varroa rule', () => {
    const newColony = async (): Promise<string> => {
      const colony = await prisma.colony.create({
        data: {
          code: `VS-R-${suffix}-${ruleColonyIds.length}`,
          apiaryId,
          colonyType: 'PRODUCTION_COLONY',
        },
      });
      ruleColonyIds.push(colony.id);
      return colony.id;
    };

    /** Records a measurement and runs the handlers of its event. */
    const measure = async (
      colonyId: string,
      date: string,
      miteCount: number,
    ): Promise<string> => {
      const created = (
        await request(app.getHttpServer())
          .post('/api/v1/varroa-measurements')
          .set('Authorization', `Bearer ${token}`)
          .send({
            colonyId,
            date,
            method: 'NATURAL_MITE_FALL',
            miteCount,
            // One day on the board: the count is the rate per day.
            durationMinutes: 24 * 60,
          })
          .expect(201)
      ).body as { id: string };
      await drainDomainEvents(app, [created.id]);
      return created.id;
    };

    const ruleSuggestions = (colonyId: string) =>
      prisma.suggestion.findMany({
        where: { colonyId, ruleKey: 'VARROA_THRESHOLD' },
      });

    it('12 mites/day in August proposes a treatment check', async () => {
      const colonyId = await newColony();

      const id = await measure(colonyId, '2026-08-10T00:00:00.000Z', 12);

      const suggestions = await ruleSuggestions(colonyId);
      expect(suggestions).toHaveLength(1);
      expect(suggestions[0]).toMatchObject({
        intent: 'VARROA_TREAT',
        reasonCode: 'VARROA_RED',
        status: 'OPEN',
        dedupeKey: `VARROA_THRESHOLD:${colonyId}:${id}`,
        evidence: { value: 12, redAbove: 10, unit: 'MITES_PER_DAY' },
      });
    });

    it('12 mites/day five days after treatment end proposes nothing', async () => {
      const colonyId = await newColony();
      await prisma.treatment.create({
        data: {
          colonyId,
          userId,
          date: new Date('2026-08-01T00:00:00.000Z'),
          endDate: new Date('2026-08-05T00:00:00.000Z'),
          product: 'Oxuvar',
        },
      });

      await measure(colonyId, '2026-08-10T00:00:00.000Z', 12);

      expect(await ruleSuggestions(colonyId)).toHaveLength(0);
    });

    it('10.0 mites/day in August proposes nothing (yellow)', async () => {
      const colonyId = await newColony();

      await measure(colonyId, '2026-08-10T00:00:00.000Z', 10);

      expect(await ruleSuggestions(colonyId)).toHaveLength(0);
    });
  });
});