import type { Prisma } from '../../generated/prisma';
import type {
  AnyDomainEventEnvelope,
  DomainEventType,
} from '../domain-events/domain-event-types';
import { domainEventHandlerMetadata } from '../domain-events/on-domain-event.decorator';
import type { NotificationsService } from '../notifications/notifications.service';
import type {
  WithdrawalCheckService,
  WithdrawalConflict,
} from './withdrawal-check.service';
import { WithdrawalEventHandlers } from './withdrawal.handlers';

const conflict: WithdrawalConflict = {
  harvestId: 'h1',
  harvestedOn: '2026-08-10',
  colonyId: 'c1',
  treatmentId: 't1',
  product: 'Oxuvar',
  untilDay: '2026-08-20',
};

const envelope = <T extends DomainEventType>(
  type: T,
  aggregateId: string,
  payload: Record<string, unknown>,
) => ({ type, aggregateId, payload }) as unknown as AnyDomainEventEnvelope<T>;

const treatmentRow = (overrides: Record<string, unknown> = {}) => ({
  id: 't1',
  colonyId: 'c1',
  product: 'Oxuvar',
  date: new Date('2026-07-31T00:00:00.000Z'),
  startDate: null,
  endDate: null,
  withdrawalPeriodDays: 20,
  colony: { code: 'B3', status: 'ACTIVE' },
  ...overrides,
});

describe('WithdrawalEventHandlers', () => {
  // The texts add the year outside the current one: pin 'today'.
  beforeAll(() => {
    jest.useFakeTimers({ now: new Date('2026-06-01T10:00:00Z') });
  });
  afterAll(() => {
    jest.useRealTimers();
  });

  let check: {
    conflictsForHarvests: jest.Mock;
    conflictsForHoneyBatch: jest.Mock;
    conflictsForExtraction: jest.Mock;
    conflictsForTreatment: jest.Mock;
    notifyConflictsIn: jest.Mock;
  };
  let notifications: { recordForPermission: jest.Mock };
  let tx: {
    treatment: { findUnique: jest.Mock; findMany: jest.Mock };
    automationRule: { findUnique: jest.Mock };
  };
  let handlers: WithdrawalEventHandlers;

  beforeEach(() => {
    check = {
      conflictsForHarvests: jest.fn().mockResolvedValue([conflict]),
      conflictsForHoneyBatch: jest.fn().mockResolvedValue([conflict]),
      conflictsForExtraction: jest.fn().mockResolvedValue([conflict]),
      conflictsForTreatment: jest.fn().mockResolvedValue([conflict]),
      notifyConflictsIn: jest.fn().mockResolvedValue(1),
    };
    notifications = { recordForPermission: jest.fn().mockResolvedValue([]) };
    tx = {
      treatment: {
        findUnique: jest.fn().mockResolvedValue(treatmentRow()),
        findMany: jest.fn().mockResolvedValue([]),
      },
      automationRule: { findUnique: jest.fn().mockResolvedValue(null) },
    };
    handlers = new WithdrawalEventHandlers(
      check as unknown as WithdrawalCheckService,
      notifications as unknown as NotificationsService,
    );
  });

  const asTx = () => tx as unknown as Prisma.TransactionClient;

  it('registers the three handlers under their ids', () => {
    const entries = (method: keyof WithdrawalEventHandlers) =>
      domainEventHandlerMetadata(
        Object.getOwnPropertyDescriptor(
          WithdrawalEventHandlers.prototype,
          method,
        )?.value as object,
      );

    expect(entries('harvestCheck')).toEqual([
      {
        types: ['HarvestRecorded', 'HarvestCorrected'],
        handlerId: 'withdrawal.harvest-check',
      },
    ]);
    expect(entries('bottlingCheck')).toEqual([
      {
        types: ['BatchBottled', 'BottlingCorrected'],
        handlerId: 'withdrawal.bottling-check',
      },
    ]);
    expect(entries('treatmentCheck')).toEqual([
      {
        types: ['TreatmentRecorded', 'TreatmentCorrected'],
        handlerId: 'withdrawal.treatment-check',
      },
    ]);
    expect(entries('withdrawalEnded')).toEqual([
      {
        types: ['WithdrawalEnded'],
        handlerId: 'notifications.withdrawal-ended',
      },
    ]);
  });

  describe('harvest check', () => {
    it.each(['HarvestRecorded', 'HarvestCorrected'] as const)(
      'notifies the conflicts of the harvest on %s',
      async (type) => {
        await handlers.harvestCheck(
          envelope(type, 'h1', { apiaryId: 'a1', colonyIds: ['c1'] }),
          asTx(),
        );

        expect(check.conflictsForHarvests).toHaveBeenCalledWith(tx, ['h1']);
        expect(check.notifyConflictsIn).toHaveBeenCalledWith(tx, [conflict]);
      },
    );
  });

  describe('extraction check', () => {
    it('registers under its id', () => {
      expect(
        domainEventHandlerMetadata(
          Object.getOwnPropertyDescriptor(
            WithdrawalEventHandlers.prototype,
            'extractionCheck',
          )?.value as object,
        ),
      ).toEqual([
        {
          types: ['ExtractionRecorded', 'ExtractionCorrected'],
          handlerId: 'withdrawal.extraction-check',
        },
      ]);
    });

    it.each(['ExtractionRecorded', 'ExtractionCorrected'] as const)(
      'notifies the conflicts of the extraction on %s',
      async (type) => {
        await handlers.extractionCheck(
          envelope(type, 'e1', { harvestIds: ['h1'] }),
          asTx(),
        );

        expect(check.conflictsForExtraction).toHaveBeenCalledWith(tx, 'e1');
        expect(check.notifyConflictsIn).toHaveBeenCalledWith(tx, [conflict]);
      },
    );
  });

  describe('treatment check', () => {
    it.each(['TreatmentRecorded', 'TreatmentCorrected'] as const)(
      'notifies harvests that already lie in the window of the treatment on %s',
      async (type) => {
        await handlers.treatmentCheck(
          envelope(type, 't1', { colonyId: 'c1' }),
          asTx(),
        );

        expect(check.conflictsForTreatment).toHaveBeenCalledWith(tx, 't1');
        expect(check.notifyConflictsIn).toHaveBeenCalledWith(tx, [conflict]);
      },
    );
  });

  describe('bottling check', () => {
    it('checks the harvests behind the honey batch on BatchBottled', async () => {
      await handlers.bottlingCheck(
        envelope('BatchBottled', 'bb1', { honeyBatchId: 'hb1' }),
        asTx(),
      );

      expect(check.conflictsForHoneyBatch).toHaveBeenCalledWith(tx, 'hb1');
      expect(check.notifyConflictsIn).toHaveBeenCalledWith(tx, [conflict]);
    });

    it('checks on a corrected bottling too', async () => {
      await handlers.bottlingCheck(
        envelope('BottlingCorrected', 'bb1', {
          honeyBatchId: 'hb1',
          removed: false,
        }),
        asTx(),
      );

      expect(check.notifyConflictsIn).toHaveBeenCalledTimes(1);
    });

    it('does nothing for a removed bottling', async () => {
      await handlers.bottlingCheck(
        envelope('BottlingCorrected', 'bb1', {
          honeyBatchId: 'hb1',
          removed: true,
        }),
        asTx(),
      );

      expect(check.conflictsForHoneyBatch).not.toHaveBeenCalled();
      expect(check.notifyConflictsIn).not.toHaveBeenCalled();
    });
  });

  describe('withdrawal ended', () => {
    const ended = () =>
      envelope('WithdrawalEnded', 't1', {
        colonyId: 'c1',
        endedOn: '2026-08-20',
      });

    it('tells readiness to harvest once, with colony, product and end day', async () => {
      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).toHaveBeenCalledWith(
        ['harvests:create', 'treatments:read'],
        {
          priority: 'INFO',
          category: 'WITHDRAWAL',
          message:
            'B3: Wartezeit nach Oxuvar bis einschließlich 19.08. – ab 20.08. wieder erntefähig.',
          relatedType: 'Colony',
          relatedId: 'c1',
          link: '/colonies/c1',
          dedupeKeyPrefix: 'withdrawal-ended:t1:2026-08-20',
        },
        tx,
      );
    });

    it('stays quiet while another window of the colony still runs', async () => {
      tx.treatment.findMany.mockResolvedValue([
        treatmentRow({
          id: 't2',
          date: new Date('2026-08-10T00:00:00.000Z'),
          withdrawalPeriodDays: 14,
        }),
      ]);

      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).not.toHaveBeenCalled();
    });

    it('ignores a window of another treatment that has ended or not begun', async () => {
      tx.treatment.findMany.mockResolvedValue([
        // Ended on 2026-08-20 itself: the day is free again.
        treatmentRow({
          id: 't2',
          date: new Date('2026-07-01T00:00:00.000Z'),
          withdrawalPeriodDays: 50,
        }),
        // Starts after the end day.
        treatmentRow({
          id: 't3',
          date: new Date('2026-08-21T00:00:00.000Z'),
          withdrawalPeriodDays: 10,
        }),
      ]);

      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).toHaveBeenCalledTimes(1);
    });

    it('reads the other treatments of the colony without the ended one', async () => {
      await handlers.withdrawalEnded(ended(), asTx());

      expect(tx.treatment.findMany).toHaveBeenCalledWith(
        expect.objectContaining({
          where: {
            colonyId: 'c1',
            id: { not: 't1' },
            withdrawalPeriodDays: { not: null },
          },
        }),
      );
    });

    it('is silent when the rule is switched off', async () => {
      tx.automationRule.findUnique.mockResolvedValue({
        id: 'r1',
        active: false,
        config: { notify: true },
        actionTemplate: null,
      });

      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).not.toHaveBeenCalled();
    });

    it('is silent when notify is off', async () => {
      tx.automationRule.findUnique.mockResolvedValue({
        id: 'r1',
        active: true,
        config: { notify: false },
        actionTemplate: null,
      });

      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).not.toHaveBeenCalled();
    });

    it('is silent for a colony that no longer exists as a living unit', async () => {
      tx.treatment.findUnique.mockResolvedValue(
        treatmentRow({ colony: { code: 'B3', status: 'DISSOLVED' } }),
      );

      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).not.toHaveBeenCalled();
    });

    it('is silent when the treatment is gone or its window moved since the event', async () => {
      tx.treatment.findUnique.mockResolvedValueOnce(null);
      await handlers.withdrawalEnded(ended(), asTx());

      tx.treatment.findUnique.mockResolvedValueOnce(
        treatmentRow({ withdrawalPeriodDays: 25 }),
      );
      await handlers.withdrawalEnded(ended(), asTx());

      expect(notifications.recordForPermission).not.toHaveBeenCalled();
    });
  });
});