import { BasicRepresentation } from '../../../../src/http/representation/BasicRepresentation';
import type { Representation } from '../../../../src/http/representation/Representation';
import { RepresentationMetadata } from '../../../../src/http/representation/RepresentationMetadata';
import { SingleContainerJsonStorage } from '../../../../src/init/migration/SingleContainerJsonStorage';
import type { ResourceStore } from '../../../../src/storage/ResourceStore';
import { NotFoundHttpError } from '../../../../src/util/errors/NotFoundHttpError';
import { isContainerIdentifier } from '../../../../src/util/PathUtil';
import { LDP } from '../../../../src/util/Vocabularies';

describe('A SingleContainerJsonStorage', (): void => {
  const baseUrl = 'http://example.com/';
  const container = '.internal/accounts/';
  let store: jest.Mocked<ResourceStore>;
  let storage: SingleContainerJsonStorage<any>;

  beforeEach(async(): Promise<void> => {
    store = {
      getRepresentation: jest.fn(async(id): Promise<Representation> => {
        if (isContainerIdentifier(id)) {
          const metadata = new RepresentationMetadata(id);
          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/foo');
          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/bar/');
          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/baz');
          metadata.add(LDP.terms.contains, 'http://example.com/.internal/accounts/unknown');
          return new BasicRepresentation('', metadata);
        }
        if (id.path.endsWith('unknown')) {
          throw new NotFoundHttpError();
        }
        return new BasicRepresentation(`{ "id": "${id.path}" }`, 'text/plain');
      }),
    } satisfies Partial<ResourceStore> as any;

    storage = new SingleContainerJsonStorage(store, baseUrl, container);
  });

  it('only iterates over the documents in the base container.', async(): Promise<void> => {
    const entries = [];
    for await (const entry of storage.entries()) {
      entries.push(entry);
    }
    expect(entries).toEqual([
      [ 'foo', { id: 'http://example.com/.internal/accounts/foo' }],
      [ 'baz', { id: 'http://example.com/.internal/accounts/baz' }],
    ]);
    expect(store.getRepresentation).toHaveBeenCalledTimes(4);
    expect(store.getRepresentation).toHaveBeenNthCalledWith(
      1,
      { path: 'http://example.com/.internal/accounts/' },
      {},
    );
    expect(store.getRepresentation).toHaveBeenNthCalledWith(
      2,
      { path: 'http://example.com/.internal/accounts/foo' },
      { type: { 'application/json': 1 }},
    );
    expect(store.getRepresentation).toHaveBeenNthCalledWith(
      3,
      { path: 'http://example.com/.internal/accounts/baz' },
      { type: { 'application/json': 1 }},
    );
    expect(store.getRepresentation).toHaveBeenNthCalledWith(
      4,
      { path: 'http://example.com/.internal/accounts/unknown' },
      { type: { 'application/json': 1 }},
    );
  });

  it('does nothing if the container does not exist.', async(): Promise<void> => {
    store.getRepresentation.mockRejectedValueOnce(new NotFoundHttpError());
    const entries = [];
    for await (const entry of storage.entries()) {
      entries.push(entry);
    }
    expect(entries).toHaveLength(0);
  });
});