import {
  CONTRACT_TEMPLATE_CODES,
  contractTemplateCodeFor,
} from './entities/contract-template.entity';
import { CONTRACT_TEMPLATE_DEFAULTS } from '../../seed/data/contract-template-defaults';

describe('contractTemplateCodeFor', () => {
  it('splits import and export by the customs flag', () => {
    expect(contractTemplateCodeFor('IMPORT', 'BULK', true)).toBe('IMPORT_BULK_CUSTOMS');
    expect(contractTemplateCodeFor('IMPORT', 'BULK', false)).toBe('IMPORT_BULK_NO_CUSTOMS');
    expect(contractTemplateCodeFor('EXPORT', 'CONTAINER', true)).toBe(
      'EXPORT_CONTAINER_CUSTOMS',
    );
    expect(contractTemplateCodeFor('EXPORT', 'CONTAINER', false)).toBe(
      'EXPORT_CONTAINER_NO_CUSTOMS',
    );
  });

  it('never gives intercity a customs variant — it crosses no border', () => {
    for (const flag of [true, false, null, undefined]) {
      expect(contractTemplateCodeFor('DOMESTIC', 'BULK', flag)).toBe('INTERCITY_BULK');
      expect(contractTemplateCodeFor('DOMESTIC', 'CONTAINER', flag)).toBe(
        'INTERCITY_CONTAINER',
      );
    }
  });

  it('treats a missing customs flag as no customs on cross-border contracts', () => {
    expect(contractTemplateCodeFor('IMPORT', 'CONTAINER', null)).toBe(
      'IMPORT_CONTAINER_NO_CUSTOMS',
    );
    expect(contractTemplateCodeFor('IMPORT', 'CONTAINER', undefined)).toBe(
      'IMPORT_CONTAINER_NO_CUSTOMS',
    );
  });

  it('only ever resolves to a code that exists', () => {
    const directions = ['IMPORT', 'EXPORT', 'DOMESTIC', null];
    const freights = ['BULK', 'CONTAINER', 'BREAK_BULK', null];
    for (const d of directions) {
      for (const f of freights) {
        for (const c of [true, false]) {
          expect(CONTRACT_TEMPLATE_CODES).toContain(contractTemplateCodeFor(d, f, c));
        }
      }
    }
  });
});

describe('CONTRACT_TEMPLATE_DEFAULTS', () => {
  it('seeds exactly the ten declared codes, once each', () => {
    const seeded = CONTRACT_TEMPLATE_DEFAULTS.map((t) => t.code).sort();
    expect(seeded).toHaveLength(10);
    expect(seeded).toEqual([...CONTRACT_TEMPLATE_CODES].sort());
  });

  it('gives every _CUSTOMS template the customs articles and no other one', () => {
    for (const seed of CONTRACT_TEMPLATE_DEFAULTS) {
      const hasCustomsArticle = seed.articles.some((a) => a.id === 'customs-clearing');
      // Note "_NO_CUSTOMS" also ends with "_CUSTOMS" — exclude it explicitly.
      const isCustomsVariant =
        seed.code.endsWith('_CUSTOMS') && !seed.code.endsWith('_NO_CUSTOMS');
      expect(hasCustomsArticle).toBe(isCustomsVariant);
    }
  });
});