import { describe, it, expect, vi, beforeEach } from 'vitest';

const { mockFind, mockFindOne, mockFindOneAndUpdate, mockSave } = vi.hoisted(() => ({
  mockFind: vi.fn(),
  mockFindOne: vi.fn(),
  mockFindOneAndUpdate: vi.fn(),
  mockSave: vi.fn(),
}));

vi.mock('../../schemas/store.schema.js', () => {
  const chain = () => ({
    sort: vi.fn().mockReturnThis(),
    limit: vi.fn().mockReturnThis(),
    lean: vi.fn().mockReturnThis(),
    exec: mockFind,
  });
  const findOneChain = () => ({ lean: vi.fn().mockReturnThis(), exec: mockFindOne });
  const updateChain = () => ({ exec: mockFindOneAndUpdate });

  class FakeModel {
    data: unknown;
    constructor(data: unknown) {
      this.data = data;
    }
    save = mockSave;
    toObject() {
      return this.data;
    }
    static find = vi.fn(() => chain());
    static findOne = vi.fn(() => findOneChain());
    static findOneAndUpdate = vi.fn(() => updateChain());
  }
  return { StoreModel: FakeModel };
});

import { StoresRepository } from './stores.repository.js';

describe(StoresRepository.name, () => {
  let repo: StoresRepository;

  beforeEach(() => {
    vi.clearAllMocks();
    repo = new StoresRepository();
  });

  describe('findByHousehold', () => {
    it('returns paginated items', async () => {
      const items = [{ _id: 'st-1', name: 'Walgreens' }];
      mockFind.mockResolvedValue(items);

      const result = await repo.findByHousehold('hh1', { limit: 20 });

      expect(result.data).toEqual(items);
      expect(result.pagination.hasMore).toBe(false);
      expect(result.pagination.cursor).toBeNull();
    });

    it('sets hasMore when more items exist', async () => {
      const items = [{ _id: 'st-1' }, { _id: 'st-2' }, { _id: 'st-3' }];
      mockFind.mockResolvedValue(items);

      const result = await repo.findByHousehold('hh1', { limit: 2 });

      expect(result.data).toHaveLength(2);
      expect(result.pagination.hasMore).toBe(true);
      expect(result.pagination.cursor).toBeTruthy();
    });

    it('handles cursor pagination', async () => {
      mockFind.mockResolvedValue([]);

      const cursor = Buffer.from('st-1').toString('base64');
      const result = await repo.findByHousehold('hh1', { cursor, limit: 20 });

      expect(result.pagination.hasMore).toBe(false);
    });

    it('filters by tags', async () => {
      mockFind.mockResolvedValue([]);

      await repo.findByHousehold('hh1', { tags: 'pharmacy,online', limit: 20 });

      expect(mockFind).toHaveBeenCalled();
    });

    it('filters by search', async () => {
      mockFind.mockResolvedValue([]);

      await repo.findByHousehold('hh1', { search: 'cvs', limit: 20 });

      expect(mockFind).toHaveBeenCalled();
    });

    it('skips tag filter when tags string is empty after trim', async () => {
      mockFind.mockResolvedValue([]);

      await repo.findByHousehold('hh1', { tags: '  ,  ', limit: 20 });

      expect(mockFind).toHaveBeenCalled();
    });

    it('returns null cursor when no data', async () => {
      mockFind.mockResolvedValue([]);

      const result = await repo.findByHousehold('hh1', { limit: 20 });

      expect(result.pagination.cursor).toBeNull();
    });
  });

  describe('findById', () => {
    it('returns store when found', async () => {
      const store = { _id: 'st-1', name: 'CVS' };
      mockFindOne.mockResolvedValue(store);

      const result = await repo.findById('st-1', 'hh1');

      expect(result).toEqual(store);
    });

    it('returns null when not found', async () => {
      mockFindOne.mockResolvedValue(null);

      expect(await repo.findById('missing', 'hh1')).toBeNull();
    });
  });

  describe('create', () => {
    it('creates and returns store', async () => {
      const data = { name: 'Walgreens', tags: [], isActive: true };
      mockSave.mockImplementation(function (this: { toObject: () => unknown }) {
        return Promise.resolve(this);
      });

      const result = await repo.create(data as never, 'hh1', 'user-1');

      expect(result).toBeTruthy();
      expect(mockSave).toHaveBeenCalled();
    });
  });

  describe('update', () => {
    it('updates and returns store', async () => {
      const updated = { _id: 'st-1', name: 'Updated' };
      mockFindOneAndUpdate.mockResolvedValue(updated);

      const result = await repo.update('st-1', 'hh1', { name: 'Updated' });

      expect(result).toEqual(updated);
    });

    it('returns null when not found', async () => {
      mockFindOneAndUpdate.mockResolvedValue(null);

      expect(await repo.update('missing', 'hh1', {})).toBeNull();
    });
  });

  describe('deactivate', () => {
    it('sets isActive=false and returns store', async () => {
      const deactivated = { _id: 'st-1', isActive: false };
      mockFindOneAndUpdate.mockResolvedValue(deactivated);

      const result = await repo.deactivate('st-1', 'hh1');

      expect(result).toEqual(deactivated);
    });

    it('returns null when not found', async () => {
      mockFindOneAndUpdate.mockResolvedValue(null);

      expect(await repo.deactivate('missing', 'hh1')).toBeNull();
    });
  });
});