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 { lockRowsForUpdate } from '../prisma/row-lock';
import { AutopilotEventHandlers } from './autopilot.handlers';
import type { AutopilotService } from './autopilot.service';

jest.mock('../prisma/row-lock');
const lockRows = jest.mocked(lockRowsForUpdate);

const EXPECTED_TYPES: DomainEventType[] = [
  'InspectionRecorded',
  'InspectionCorrected',
  'VarroaMeasured',
  'VarroaCorrected',
  'TreatmentRecorded',
  'TreatmentCorrected',
  'FeedingRecorded',
  'FeedingCorrected',
  'HarvestRecorded',
  'HarvestCorrected',
  'ColonyStatusChanged',
  'ColonySplit',
  'QueenAssigned',
  'TaskCompleted',
  'TaskUpdated',
  'WithdrawalEnded',
  'QueenAged',
  'InspectionOverdue',
  'VarroaMeasurementDue',
  'WinterCheckRecorded',
];

function event(
  type: DomainEventType,
  aggregateId: string,
  payload: object,
): AnyDomainEventEnvelope {
  return {
    id: 'evt-1',
    type,
    aggregateType: 'Colony',
    aggregateId,
    payload,
    actorUserId: null,
    correlationId: 'cor-1',
    occurredAt: new Date(),
    attempts: 0,
  } as AnyDomainEventEnvelope;
}

describe('AutopilotEventHandlers', () => {
  let autopilot: { syncColonyIn: jest.Mock; syncApiaryIn: jest.Mock };
  let tx: { task: { findUnique: jest.Mock } };
  let handlers: AutopilotEventHandlers;

  beforeEach(() => {
    lockRows.mockReset();
    jest.useFakeTimers({ now: new Date('2026-05-12T08:00:00.000Z') });
    autopilot = {
      syncColonyIn: jest.fn().mockResolvedValue({}),
      syncApiaryIn: jest.fn().mockResolvedValue({}),
    };
    tx = { task: { findUnique: jest.fn() } };
    handlers = new AutopilotEventHandlers(
      autopilot as unknown as AutopilotService,
    );
  });

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

  const run = (e: AnyDomainEventEnvelope) =>
    handlers.colonySync(
      e as Parameters<AutopilotEventHandlers['colonySync']>[0],
      tx as unknown as Prisma.TransactionClient,
    );
  const synced = () =>
    autopilot.syncColonyIn.mock.calls.map((call: unknown[]) => call[1]);

  it('is registered as autopilot.colony-sync for the listed events', () => {
    const entries = domainEventHandlerMetadata(
      // eslint-disable-next-line @typescript-eslint/unbound-method
      AutopilotEventHandlers.prototype.colonySync,
    );

    expect(entries).toHaveLength(1);
    expect(entries[0].handlerId).toBe('autopilot.colony-sync');
    expect([...entries[0].types].sort()).toEqual([...EXPECTED_TYPES].sort());
  });

  it.each([
    ['InspectionRecorded', { colonyId: 'c1' }],
    ['InspectionCorrected', { colonyId: 'c1' }],
    ['VarroaMeasured', { colonyId: 'c1' }],
    ['VarroaCorrected', { colonyId: 'c1' }],
    ['TreatmentRecorded', { colonyId: 'c1' }],
    ['TreatmentCorrected', { colonyId: 'c1' }],
    ['FeedingRecorded', { colonyId: 'c1' }],
    ['FeedingCorrected', { colonyId: 'c1' }],
    ['WinterCheckRecorded', { colonyId: 'c1' }],
    ['WithdrawalEnded', { colonyId: 'c1', endedOn: '2026-05-12' }],
    ['QueenAged', { colonyId: 'c1', hatchYear: 2024 }],
  ] as [DomainEventType, object][])(
    '%s syncs the colony of its payload for the Berlin day',
    async (type, payload) => {
      await run(event(type, 'aggregate-1', payload));

      expect(autopilot.syncColonyIn).toHaveBeenCalledTimes(1);
      expect(autopilot.syncColonyIn).toHaveBeenCalledWith(
        tx,
        'c1',
        '2026-05-12',
      );
    },
  );

  it.each([
    'ColonyStatusChanged',
    'InspectionOverdue',
    'VarroaMeasurementDue',
  ] as const)('%s syncs the aggregate colony', async (type) => {
    await run(event(type, 'c9', {}));

    expect(synced()).toEqual(['c9']);
  });

  it('syncs every colony of a harvest, in id order', async () => {
    await run(
      event('HarvestRecorded', 'h1', {
        apiaryId: 'a',
        colonyIds: ['c3', 'c1', 'c2', 'c1'],
      }),
    );

    expect(synced()).toEqual(['c1', 'c2', 'c3']);
  });

  it('locks all colonies of an event in one statement before syncing any', async () => {
    await run(
      event('HarvestRecorded', 'h1', {
        apiaryId: 'a',
        colonyIds: ['c3', 'c1', 'c2'],
      }),
    );

    expect(lockRows).toHaveBeenCalledWith(tx, 'Colony', ['c1', 'c2', 'c3']);
    expect(lockRows.mock.invocationCallOrder[0]).toBeLessThan(
      autopilot.syncColonyIn.mock.invocationCallOrder[0],
    );
  });

  it('takes no extra lock for a single colony', async () => {
    await run(event('InspectionRecorded', 'i1', { colonyId: 'c1' }));

    expect(lockRows).not.toHaveBeenCalled();
  });

  it('syncs the new and the parent colony of a split', async () => {
    await run(event('ColonySplit', 'new', { parentColonyId: 'mother' }));

    expect(synced()).toEqual(['mother', 'new']);
  });

  it('syncs the colony and the previous colony of a queen assignment', async () => {
    await run(
      event('QueenAssigned', 'q1', { colonyId: 'c2', previousColonyId: 'c1' }),
    );
    await run(
      event('QueenAssigned', 'q1', { colonyId: 'c2', previousColonyId: null }),
    );

    expect(synced()).toEqual(['c1', 'c2', 'c2']);
  });

  it('syncs a colony task on completion and update, nothing for other tasks', async () => {
    await run(
      event('TaskCompleted', 't1', { relatedType: 'COLONY', relatedId: 'c1' }),
    );
    await run(
      event('TaskCompleted', 't2', { relatedType: 'GENERAL', relatedId: null }),
    );
    tx.task.findUnique
      .mockResolvedValueOnce({ relatedType: 'COLONY', relatedId: 'c4' })
      .mockResolvedValueOnce({ relatedType: 'QUEEN', relatedId: 'q1' })
      .mockResolvedValueOnce(null);
    await run(event('TaskUpdated', 't3', { status: 'OPEN', dueDate: null }));
    await run(event('TaskUpdated', 't4', { status: 'OPEN', dueDate: null }));
    await run(event('TaskUpdated', 't5', { status: 'OPEN', dueDate: null }));

    expect(synced()).toEqual(['c1', 'c4']);
  });

  it('does nothing for a queen event without a colony', async () => {
    await run(event('QueenAged', 'q1', { colonyId: null, hatchYear: 2023 }));

    expect(autopilot.syncColonyIn).not.toHaveBeenCalled();
  });

  it('lets errors propagate so the delivery is retried', async () => {
    autopilot.syncColonyIn.mockRejectedValue(new Error('db down'));

    await expect(
      run(event('InspectionRecorded', 'i1', { colonyId: 'c1' })),
    ).rejects.toThrow('db down');
  });

  describe('apiarySync', () => {
    it('is registered as autopilot.apiary-sync for SeasonPhaseChanged only', () => {
      const entries = domainEventHandlerMetadata(
        // eslint-disable-next-line @typescript-eslint/unbound-method
        AutopilotEventHandlers.prototype.apiarySync,
      );

      expect(entries).toHaveLength(1);
      expect(entries[0].handlerId).toBe('autopilot.apiary-sync');
      expect([...entries[0].types]).toEqual(['SeasonPhaseChanged']);
    });

    // One event per apiary and day (dailyDedupeKey): a change later the same
    // day is caught by the daily autopilot step.
    it('syncs the apiary of the payload for the Berlin day', async () => {
      await handlers.apiarySync(
        event('SeasonPhaseChanged', 'api-1', {
          apiaryId: 'api-1',
          phase: 'KIRSCHE',
          segment: 'SCHWARMZEIT',
          previousPhase: 'SALWEIDE',
          previousSegment: 'FRUEHJAHR',
          source: 'REPORT',
        }) as Parameters<AutopilotEventHandlers['apiarySync']>[0],
        tx as unknown as Prisma.TransactionClient,
      );

      expect(autopilot.syncApiaryIn).toHaveBeenCalledTimes(1);
      expect(autopilot.syncApiaryIn).toHaveBeenCalledWith(
        tx,
        'api-1',
        '2026-05-12',
      );
      expect(autopilot.syncColonyIn).not.toHaveBeenCalled();
    });

    it('lets errors propagate so the delivery is retried', async () => {
      autopilot.syncApiaryIn.mockRejectedValue(new Error('db down'));

      await expect(
        handlers.apiarySync(
          event('SeasonPhaseChanged', 'api-1', {
            apiaryId: 'api-1',
          }) as Parameters<AutopilotEventHandlers['apiarySync']>[0],
          tx as unknown as Prisma.TransactionClient,
        ),
      ).rejects.toThrow('db down');
    });
  });
});