import { CalendarService } from './calendar.service';
import { PrismaService } from '../prisma/prisma.service';

describe('CalendarService', () => {
  let service: CalendarService;
  let prisma: {
    task: { findMany: jest.Mock };
    inspection: { findMany: jest.Mock };
    treatment: { findMany: jest.Mock };
    feeding: { findMany: jest.Mock };
    harvest: { findMany: jest.Mock };
    queenColonyHistory: { findMany: jest.Mock };
  };

  beforeEach(() => {
    prisma = {
      task: { findMany: jest.fn().mockResolvedValue([]) },
      inspection: { findMany: jest.fn().mockResolvedValue([]) },
      treatment: { findMany: jest.fn().mockResolvedValue([]) },
      feeding: { findMany: jest.fn().mockResolvedValue([]) },
      harvest: { findMany: jest.fn().mockResolvedValue([]) },
      queenColonyHistory: { findMany: jest.fn().mockResolvedValue([]) },
    };
    service = new CalendarService(prisma as unknown as PrismaService);
  });

  it('merges tasks, inspections, and harvests into one sorted event list', async () => {
    prisma.task.findMany.mockResolvedValueOnce([
      { id: 't1', title: 'Kontrolle', dueDate: new Date('2026-06-05') },
    ]);
    prisma.inspection.findMany.mockResolvedValueOnce([
      {
        id: 'i1',
        date: new Date('2026-06-01'),
        colonyId: 'c1',
        colony: { code: 'V-001' },
      },
    ]);
    prisma.harvest.findMany.mockResolvedValueOnce([
      { id: 'h1', date: new Date('2026-06-10'), apiaryId: 'a1' },
    ]);

    const events = await service.getEvents({
      from: new Date('2026-06-01'),
      to: new Date('2026-06-30'),
    });

    expect(events.map((event) => event.type)).toEqual([
      'INSPECTION',
      'TASK',
      'HARVEST',
    ]);
  });

  it('filters colony-linked events by apiary when apiaryId is given', async () => {
    await service.getEvents({
      from: new Date('2026-06-01'),
      to: new Date('2026-06-30'),
      apiaryId: 'a1',
    });

    const [[inspectionArg]] = prisma.inspection.findMany.mock.calls as [
      [{ where: { colony?: { apiaryId?: string } } }],
    ];
    expect(inspectionArg.where.colony).toEqual({ apiaryId: 'a1' });

    const [[harvestArg]] = prisma.harvest.findMany.mock.calls as [
      [{ where: { apiaryId?: string } }],
    ];
    expect(harvestArg.where.apiaryId).toBe('a1');
  });

  it('excludes tasks without a due date', async () => {
    prisma.task.findMany.mockResolvedValueOnce([
      { id: 't1', title: 'Ohne Datum', dueDate: null },
    ]);

    const events = await service.getEvents({
      from: new Date('2026-06-01'),
      to: new Date('2026-06-30'),
    });

    expect(events).toHaveLength(0);
  });
});