import { createReadStream } from 'fs';
import { join } from 'path';
import type { HttpHandler, Initializer, ResourceStore } from '../../src/';
import { RepresentationMetadata } from '../../src/ldp/representation/RepresentationMetadata';
import { guardStream } from '../../src/util/GuardedStream';
import { CONTENT_TYPE, LDP } from '../../src/util/UriConstants';
import { AclTestHelper, FileTestHelper } from '../util/TestHelpers';
import { BASE, getTestFolder, createFolder, removeFolder, instantiateFromConfig } from './Config';

const rootFilePath = getTestFolder('full-config-acl');
const stores: [string, any][] = [
  [ 'in-memory storage', {
    storeUrn: 'urn:solid-server:default:MemoryResourceStore',
    setup: jest.fn(),
    teardown: jest.fn(),
  }],
  [ 'on-disk storage', {
    storeUrn: 'urn:solid-server:default:FileResourceStore',
    setup: (): void => createFolder(rootFilePath),
    teardown: (): void => removeFolder(rootFilePath),
  }],
];

describe.each(stores)('An LDP handler with auth using %s', (name, { storeUrn, setup, teardown }): void => {
  let handler: HttpHandler;
  let aclHelper: AclTestHelper;
  let fileHelper: FileTestHelper;

  beforeAll(async(): Promise<void> => {
    // Set up the internal store
    await setup();
    const variables: Record<string, any> = {
      'urn:solid-server:default:variable:baseUrl': BASE,
      'urn:solid-server:default:variable:rootFilePath': rootFilePath,
    };
    const internalStore = await instantiateFromConfig(
      storeUrn,
      'auth-ldp-handler.json',
      variables,
    ) as ResourceStore;
    variables['urn:solid-server:default:variable:store'] = internalStore;

    // Create and initialize the HTTP handler and related components
    let initializer: Initializer;
    let store: ResourceStore;
    const instances = await instantiateFromConfig(
      'urn:solid-server:test:Instances',
      'auth-ldp-handler.json',
      variables,
    ) as Record<string, any>;
    ({ handler, store, initializer } = instances);
    await initializer.handleSafe();

    // Create test helpers for manipulating the components
    aclHelper = new AclTestHelper(store, BASE);
    fileHelper = new FileTestHelper(handler, new URL(BASE));

    // Write test resource
    await store.setRepresentation({ path: `${BASE}/permanent.txt` }, {
      binary: true,
      data: guardStream(createReadStream(join(__dirname, '../assets/permanent.txt'))),
      metadata: new RepresentationMetadata({ [CONTENT_TYPE]: 'text/plain' }),
    });
  });

  afterAll(async(): Promise<void> => {
    await teardown();
  });

  it('can add a file to the store, read it and delete it if allowed.', async():
  Promise<void> => {
    // Set acl
    await aclHelper.setSimpleAcl({ read: true, write: true, append: true }, 'agent');

    // Create file
    let response = await fileHelper.createFile('../assets/testfile2.txt', 'testfile2.txt', 'text/plain');
    const id = response._getHeaders().location;

    // Get file
    response = await fileHelper.getFile(id);
    expect(response.statusCode).toBe(200);
    expect(response._getBuffer().toString()).toContain('TESTFILE2');
    expect(response.getHeaders().link).toBe(`<${LDP.Resource}>; rel="type"`);

    // DELETE file
    await fileHelper.deleteResource(id);
    await fileHelper.shouldNotExist(id);
  });

  it('can not add a file to the store if not allowed.', async():
  Promise<void> => {
    // Set acl
    await aclHelper.setSimpleAcl({ read: true, write: true, append: true }, 'authenticated');

    // Try to create file
    const response = await fileHelper.createFile('../assets/testfile2.txt', 'testfile2.txt', 'text/plain', true);
    expect(response.statusCode).toBe(401);
  });

  it('can not add/delete, but only read files if allowed.', async():
  Promise<void> => {
    // Set acl
    await aclHelper.setSimpleAcl({ read: true, write: false, append: false }, 'agent');

    // Try to create file
    let response = await fileHelper.createFile('../assets/testfile2.txt', 'testfile2.txt', 'text/plain', true);
    expect(response.statusCode).toBe(401);

    // GET permanent file
    response = await fileHelper.getFile('http://test.com/permanent.txt');
    expect(response._getBuffer().toString()).toContain('TEST');
    expect(response.getHeaders().link).toBe(`<${LDP.Resource}>; rel="type"`);

    // Try to delete permanent file
    response = await fileHelper.deleteResource('http://test.com/permanent.txt', true);
    expect(response.statusCode).toBe(401);
  });
});