'use strict';

/**
 * Integration tests – product controller (controllers/product.js)
 */

const { connectDB, disconnectDB, clearCollection } = require('./jest.setup');
const { mockApplicator, mockProduct, mockReq, mockRes, newId } = require('./mock_data');

let Product, Customer;

beforeAll(async () => {
  await connectDB();
  Product  = require('../../model/product');
  Customer = require('../../model/customer');
});

afterAll(async () => {
  await disconnectDB();
});

const productCtl = require('../../controllers/product');

describe('product controller – data methods', () => {
  let applicator;

  beforeAll(async () => {
    await clearCollection(Product);
    applicator = await Customer.create(mockApplicator());
  });

  afterAll(async () => {
    await clearCollection(Product);
    await Customer.deleteMany({ _id: applicator._id });
  });

  const makeReq = (extra = {}) =>
    mockReq({ uid: applicator._id, puid: applicator._id, ut: '1', ...extra });

  // -------------------------------------------------------------------------
  describe('create_post', () => {
    it('creates a product and returns it', async () => {
      const req = makeReq({ body: mockProduct(applicator._id) });
      const res = mockRes();

      await productCtl.createProduct_post(req, res);

      expect(res.json).toHaveBeenCalled();
      const p = res._data;
      expect(p._id).toBeDefined();
      expect(p.name).toMatch(/Product-/);
    });

    it('throws when body is missing', async () => {
      const req = makeReq({ body: null });
      const res = mockRes();
      await expect(productCtl.createProduct_post(req, res)).rejects.toThrow();
    });
  });

  // -------------------------------------------------------------------------
  describe('getAll_get', () => {
    it('returns products for the applicator', async () => {
      const req = makeReq({ query: {} });
      const res = mockRes();

      await productCtl.getProducts_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(Array.isArray(res._data)).toBe(true);
    });
  });

  // -------------------------------------------------------------------------
  describe('getById_get', () => {
    let productId;

    beforeAll(async () => {
      const doc = await Product.create(mockProduct(applicator._id));
      productId = String(doc._id);
    });

    it('returns a product by id', async () => {
      const req = makeReq({ params: { product_id: productId } });
      const res = mockRes();

      await productCtl.getProduct_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(String(res._data._id)).toBe(productId);
    });

    it('throws when id is invalid', async () => {
      const req = makeReq({ params: { product_id: 'bad-id' } });
      const res = mockRes();
      await expect(productCtl.getProduct_get(req, res)).rejects.toThrow();
    });
  });

  // -------------------------------------------------------------------------
  describe('update_put', () => {
    let productId;

    beforeAll(async () => {
      const doc = await Product.create(mockProduct(applicator._id));
      productId = String(doc._id);
    });

    it('updates a product', async () => {
      const req = makeReq({
        params: { product_id: productId },
        body: { name: 'Updated Product' },
      });
      const res = mockRes();

      await productCtl.updateProduct_put(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data.name).toBe('Updated Product');
    });
  });

  // -------------------------------------------------------------------------
  describe('search_post', () => {
    it('returns matching products', async () => {
      const req = makeReq({ body: { byUserId: applicator._id } });
      const res = mockRes();

      await productCtl.search_post(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(Array.isArray(res._data)).toBe(true);
    });
  });

  // -------------------------------------------------------------------------
  describe('delete_delete', () => {
    let productId;

    beforeAll(async () => {
      const doc = await Product.create(mockProduct(applicator._id));
      productId = String(doc._id);
    });

    it('deletes a product', async () => {
      const req = makeReq({ params: { product_id: productId } });
      const res = mockRes();

      await productCtl.deleteProduct(req, res);

      expect(res.json).toHaveBeenCalled();
      const found = await Product.findById(productId);
      expect(found).toBeNull();
    });
  });
});