/**
 * Pure hydration rule: initialCompanyFormState.
 *
 * Verifies that PERSONAL users landing on /dashboard/company see an empty
 * name field (forcing a real business name) while keeping address.country
 * preserved from the signup context. Non-PERSONAL companies hydrate every
 * field as-stored.
 *
 * (c) 2026 TWWIM UG. All rights reserved. (www.twwim.com)
 */

import { describe, it, expect } from 'vitest';
import type { Company } from '@/domain/entities/Company';
import { initialCompanyFormState } from './companySettingsForm';

const baseCompany: Pick<
  Company,
  'name' | 'website' | 'vatId' | 'industry' | 'size' | 'billingEmail' | 'address'
> = {
  name: 'Max Mustermann',
  website: '',
  vatId: '',
  industry: '',
  size: '',
  billingEmail: '',
  address: { country: 'DE' },
};

describe('initialCompanyFormState', () => {
  it('blanks the name for PERSONAL upgrade but keeps address.country', () => {
    const state = initialCompanyFormState(baseCompany, true);

    expect(state.name).toBe('');
    expect(state.address).toEqual({ country: 'DE' });
  });

  it('preserves existing name for non-PERSONAL companies', () => {
    const business = { ...baseCompany, name: 'Acme GmbH' };

    const state = initialCompanyFormState(business, false);

    expect(state.name).toBe('Acme GmbH');
  });

  it('hydrates every non-name field regardless of PERSONAL flag', () => {
    const full = {
      ...baseCompany,
      name: 'Max Mustermann',
      website: 'https://example.com',
      vatId: 'DE123456789',
      industry: 'Tech',
      size: '1-10',
      billingEmail: 'billing@example.com',
      address: { street: 'Hauptstr 1', zip: '10115', city: 'Berlin', country: 'DE' },
    };

    const state = initialCompanyFormState(full, true);

    expect(state).toEqual({
      name: '',
      website: 'https://example.com',
      vatId: 'DE123456789',
      industry: 'Tech',
      size: '1-10',
      billingEmail: 'billing@example.com',
      address: { street: 'Hauptstr 1', zip: '10115', city: 'Berlin', country: 'DE' },
      // Pflichtangaben fields hydrate to '' when the company hasn't supplied them.
      legalForm: '',
      taxNumber: '',
      registerCourt: '',
      registerNumber: '',
      directorName: '',
    });
  });

  it('defaults country to DE (German-first) when the company has no address', () => {
    const noAddress = { ...baseCompany, address: undefined };

    const state = initialCompanyFormState(noAddress, true);

    expect(state.address).toEqual({ country: 'DE' });
  });

  it('defaults country to DE when the address has no country', () => {
    const noCountry = { ...baseCompany, address: { street: 'Hauptstr 1', zip: '10115', city: 'Berlin' } };

    const state = initialCompanyFormState(noCountry, false);

    expect(state.address.country).toBe('DE');
    expect(state.address.city).toBe('Berlin');
  });
});