import { BadRequestException, NotFoundException } from '@nestjs/common';
import { QrService } from './qr.service';
import { PrismaService } from '../prisma/prisma.service';

describe('QrService', () => {
  let service: QrService;
  let prisma: {
    colony: { findUnique: jest.Mock };
    apiary: { findUnique: jest.Mock };
    queen: { findUnique: jest.Mock };
    honeyBatch: { findUnique: jest.Mock };
    storageContainer: { findUnique: jest.Mock };
    bottlingBatch: { findUnique: jest.Mock };
  };

  beforeEach(() => {
    prisma = {
      colony: { findUnique: jest.fn() },
      apiary: { findUnique: jest.fn() },
      queen: { findUnique: jest.fn() },
      honeyBatch: { findUnique: jest.fn() },
      storageContainer: { findUnique: jest.fn() },
      bottlingBatch: { findUnique: jest.fn() },
    };
    service = new QrService(prisma as unknown as PrismaService);
  });

  it('rejects an unsupported entity type', async () => {
    await expect(service.generateSvg('unknown', 'id-1')).rejects.toBeInstanceOf(
      BadRequestException,
    );
  });

  it('throws NotFoundException when the object does not exist', async () => {
    prisma.colony.findUnique.mockResolvedValueOnce(null);
    await expect(
      service.generateSvg('colonies', 'missing'),
    ).rejects.toBeInstanceOf(NotFoundException);
  });

  it('generates an SVG QR code for an existing colony', async () => {
    prisma.colony.findUnique.mockResolvedValueOnce({ id: 'colony-1' });
    const svg = await service.generateSvg('colonies', 'colony-1');
    expect(svg).toContain('<svg');
  });

  it('generates an SVG QR code for an existing storage container', async () => {
    prisma.storageContainer.findUnique.mockResolvedValueOnce({ id: 'sc-1' });
    const svg = await service.generateSvg('storage-containers', 'sc-1');
    expect(svg).toContain('<svg');
  });

  it('generates an SVG QR code that deep-links to the public origin page for a bottling batch', async () => {
    prisma.bottlingBatch.findUnique.mockResolvedValueOnce({
      lotNumber: 'WH-2026-001',
    });
    const svg = await service.generateSvg('bottling-batches', 'bb-1');
    expect(svg).toContain('<svg');
  });

  it('resolveUrl returns the same deep-link that generateSvg encodes, for NFC writing', async () => {
    prisma.colony.findUnique.mockResolvedValueOnce({ id: 'colony-1' });
    const url = await service.resolveUrl('colonies', 'colony-1');
    expect(url).toBe('http://localhost:3000/colonies/colony-1');
  });

  it('resolveUrl rejects an unsupported entity type', async () => {
    await expect(service.resolveUrl('unknown', 'id-1')).rejects.toBeInstanceOf(
      BadRequestException,
    );
  });

  it('resolveUrl throws NotFoundException when the object does not exist', async () => {
    prisma.colony.findUnique.mockResolvedValueOnce(null);
    await expect(
      service.resolveUrl('colonies', 'missing'),
    ).rejects.toBeInstanceOf(NotFoundException);
  });
});