'use strict';

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

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

let Customer, Client;

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

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

const customerCtl = require('../../controllers/customer');

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

  beforeAll(async () => {
    await clearCollection(Client);
    applicator = await Customer.create(mockApplicator());
    client     = await Client.create(mockClient(applicator._id));
  });

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

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

  // -------------------------------------------------------------------------
  describe('getCustomers_get', () => {
    it('returns aggregated customer list for applicator', async () => {
      const req = makeReq({ query: {} });
      const res = mockRes();

      await customerCtl.getCustomers_get(req, res);

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

    it('filters by name when provided', async () => {
      const filters = JSON.stringify({ name: { value: 'Test Applicator', valueOperator: 'contains' } });
      const req = makeReq({ query: { filters } });
      const res = mockRes();

      await customerCtl.getCustomers_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data.length).toBeGreaterThan(0);
    });

    it('returns empty when name does not match', async () => {
      const filters = JSON.stringify({ name: { value: 'NONEXISTENT_CLIENT_XYZ', valueOperator: 'contains' } });
      const req = makeReq({ query: { filters } });
      const res = mockRes();

      await customerCtl.getCustomers_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data.length).toBe(0);
    });
  });

  // -------------------------------------------------------------------------
  describe('getCustomer_get', () => {
    it('returns a customer by id', async () => {
      const req = makeReq({ params: { customer_id: String(applicator._id) } });
      const res = mockRes();

      await customerCtl.getCustomer_get(req, res);

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

    it('returns null when customer not found', async () => {
      const req = makeReq({ params: { customer_id: String(newId()) } });
      const res = mockRes();

      await customerCtl.getCustomer_get(req, res);

      expect(res.json).toHaveBeenCalled();
      expect(res._data).toBeNull();
    });

    it('throws when id is not a valid ObjectId', async () => {
      const req = makeReq({ params: { customer_id: 'bad-id' } });
      const res = mockRes();
      await expect(customerCtl.getCustomer_get(req, res)).rejects.toThrow();
    });
  });

  // -------------------------------------------------------------------------
  describe('updateCustomer_put', () => {
    it('updates a customer field', async () => {
      const req = makeReq({
        body: { _id: String(applicator._id), name: 'Updated Company Name' },
      });
      const res = mockRes();

      await customerCtl.updateCustomer_put(req, res);

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

    it('throws when _id is missing from body', async () => {
      const req = makeReq({ body: { name: 'No ID' } });
      const res = mockRes();
      await expect(customerCtl.updateCustomer_put(req, res)).rejects.toThrow();
    });
  });
});