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 { NotificationsService } from '../src/notifications/notifications.service';
import { CalendarSyncSettingsService } from '../src/calendar-sync/calendar-sync-settings.service';
import { AutomationService } from '../src/automation/automation.service';
import { createTestApp } from './utils/create-test-app';
import { login } from './utils/api';

/**
 * Side effects that follow a committed write (automation rules, calendar
 * sync, webhooks) must never turn that write into an error response: the
 * offline queue would send the request again and store the record twice -
 * for treatments that is a duplicate entry in the Bestandsbuch.
 */
describe('Post-commit side effects (e2e)', () => {
  let app: INestApplication<App>;
  let prisma: PrismaService;
  const suffix = `${Date.now()}-${Math.round(Math.random() * 1e6)}`;
  const email = `post-commit-e2e-${suffix}@example.com`;
  const password = 'SuperSecret123!';
  let token: string;
  let apiaryId: string;

  const server = () => app.getHttpServer();
  const auth = () => ({ Authorization: `Bearer ${token}` });

  async function createColony(code: string) {
    return prisma.colony.create({
      data: {
        code: `${code}-${suffix}`,
        apiaryId,
        colonyType: 'PRODUCTION_COLONY',
      },
    });
  }

  beforeAll(async () => {
    app = await createTestApp();
    prisma = app.get(PrismaService);
    await prisma.user.create({
      data: {
        email,
        passwordHash: await bcrypt.hash(password, 12),
        name: 'Post Commit',
        role: { connect: { key: 'ADMIN' } },
      },
    });
    token = (await login(app, email, password)).accessToken;
    apiaryId = (
      await prisma.apiary.create({ data: { name: `Post Commit ${suffix}` } })
    ).id;
  });

  afterEach(() => {
    jest.restoreAllMocks();
  });

  afterAll(async () => {
    await app.close();
  });

  describe('when a side effect fails', () => {
    beforeEach(() => {
      // Automation: the task is created, then the warning fails.
      jest
        .spyOn(app.get(NotificationsService), 'record')
        .mockRejectedValue(new Error('notifications down'));
      // Calendar sync: enqueue cannot read its settings.
      jest
        .spyOn(app.get(CalendarSyncSettingsService), 'get')
        .mockRejectedValue(new Error('calendar settings down'));
      // Webhooks: the subscriptions cannot be loaded.
      jest
        .spyOn(prisma.webhookSubscription, 'findMany')
        .mockRejectedValue(new Error('webhook subscriptions down'));
    });

    it('still answers 201 for an inspection and replays it on a retry', async () => {
      const colony = await createColony('PC-INSP');
      const key = `post-commit-${suffix}-inspection`;
      const body = {
        colonyId: colony.id,
        date: '2026-07-01T00:00:00.000Z',
        queenSeen: false,
        eggsPresent: false,
      };

      const first = await request(server())
        .post('/api/v1/inspections')
        .set(auth())
        .set('Idempotency-Key', key)
        .send(body)
        .expect(201);
      const retry = await request(server())
        .post('/api/v1/inspections')
        .set(auth())
        .set('Idempotency-Key', key)
        .send(body)
        .expect(201);

      expect((retry.body as { id: string }).id).toBe(
        (first.body as { id: string }).id,
      );
      expect(
        await prisma.inspection.count({ where: { colonyId: colony.id } }),
      ).toBe(1);
      // The rule still did its main job before the warning failed.
      expect(
        await prisma.task.count({
          where: {
            relatedId: colony.id,
            sourceAutomationTrigger: 'QUEENLESS_NO_EGGS',
          },
        }),
      ).toBe(1);
    });

    it('still answers 201 for a treatment when the rule evaluation fails', async () => {
      jest
        .spyOn(prisma.automationRule, 'upsert')
        .mockRejectedValue(new Error('automation rules down'));
      const colony = await createColony('PC-TREAT');
      const key = `post-commit-${suffix}-treatment`;
      const body = {
        colonyId: colony.id,
        date: '2026-08-01T00:00:00.000Z',
        product: 'Oxalsäure',
      };

      const first = await request(server())
        .post('/api/v1/treatments')
        .set(auth())
        .set('Idempotency-Key', key)
        .send(body)
        .expect(201);
      const retry = await request(server())
        .post('/api/v1/treatments')
        .set(auth())
        .set('Idempotency-Key', key)
        .send(body)
        .expect(201);

      expect((retry.body as { id: string }).id).toBe(
        (first.body as { id: string }).id,
      );
      expect(
        await prisma.treatment.count({ where: { colonyId: colony.id } }),
      ).toBe(1);
    });
  });

  describe('automation tasks', () => {
    it('leaves one open task when several triggers for the same colony arrive at once', async () => {
      const automation = app.get(AutomationService);
      // The same object crossing the threshold on several pods/requests at
      // once: every evaluation sees "no open task yet" unless checking and
      // creating are serialised.
      const item = await prisma.stockItem.create({
        data: {
          name: `Race ${suffix}`,
          category: 'CONSUMABLE',
          unit: 'Stück',
          quantity: 1,
          minThreshold: 5,
        },
      });

      await Promise.all(
        Array.from({ length: 8 }, () => automation.evaluateStockItem(item)),
      );

      expect(
        await prisma.task.count({
          where: {
            relatedId: item.id,
            sourceAutomationTrigger: 'STOCK_ITEM_LOW',
            status: { in: ['OPEN', 'IN_PROGRESS'] },
          },
        }),
      ).toBe(1);
    });

    it('leaves one open task when several measurements for the same colony arrive at once', async () => {
      const colony = await createColony('PC-RACE-HTTP');
      const measurement = {
        colonyId: colony.id,
        date: '2026-08-15T00:00:00.000Z',
        method: 'NATURAL_MITE_FALL',
        miteCount: 20,
        // One day on the board: 20 mites per day, above the default 10.
        durationMinutes: 24 * 60,
      };

      await Promise.all(
        Array.from({ length: 6 }, () =>
          request(server())
            .post('/api/v1/varroa-measurements')
            .set(auth())
            .send(measurement)
            .expect(201),
        ),
      );

      expect(
        await prisma.task.count({
          where: {
            relatedId: colony.id,
            sourceAutomationTrigger: 'VARROA_THRESHOLD',
            status: { in: ['OPEN', 'IN_PROGRESS'] },
          },
        }),
      ).toBe(1);
    });
  });
});