import { join } from 'path';
import fse, { readJSON } from 'fs-extra';
import execa from 'execa';
import Builder from '../../src/build';
import { DEFAULT_LAMBDA_CODE_DIR, API_LAMBDA_CODE_DIR } from '../../src/build';
import { cleanupDir } from '../test-utils';
import { OriginRequestDefaultHandlerManifest, OriginRequestApiHandlerManifest } from '../../types';

jest.mock('execa');

describe('Dynamic Routes Precedence', () => {
  let defaultBuildManifest: OriginRequestDefaultHandlerManifest;
  let apiBuildManifest: OriginRequestApiHandlerManifest;
  let fseRemoveSpy: jest.SpyInstance;

  const fixturePath = join(__dirname, './fixture');
  const outputDir = join(fixturePath, '.test_sls_next_output');

  beforeEach(async () => {
    const mockExeca = execa as jest.Mock;
    mockExeca.mockResolvedValueOnce();
    fseRemoveSpy = jest.spyOn(fse, 'remove').mockImplementation(() => {
      return;
    });

    const builder = new Builder(fixturePath, outputDir);
    await builder.build();

    defaultBuildManifest = await readJSON(
      join(outputDir, `${DEFAULT_LAMBDA_CODE_DIR}/manifest.json`)
    );

    apiBuildManifest = await readJSON(join(outputDir, `${API_LAMBDA_CODE_DIR}/manifest.json`));
  });

  afterEach(() => {
    fseRemoveSpy.mockRestore();
    return cleanupDir(outputDir);
  });

  it('adds dynamic page routes to the manifest in correct order of precedence', async () => {
    expect.assertions(1);

    const {
      pages: {
        ssr: { dynamic },
      },
    } = defaultBuildManifest;

    const routes = Object.keys(dynamic);
    expect(routes).toEqual(['/customers/:customer', '/:blog/:id']);
  });

  it('adds dynamic api routes to the manifest in correct order of precedence', async () => {
    expect.assertions(1);

    const {
      apis: { dynamic },
    } = apiBuildManifest;

    const routes = Object.keys(dynamic);
    expect(routes).toEqual(['/api/customers/:customer', '/api/:blog/:id']);
  });
});