import { Agent, fetch } from 'undici';
import assert from 'node:assert';
import { writeMultipleFiles } from '../../utils/fs';
import { ng, silentNg } from '../../utils/process';
import { installWorkspacePackages, uninstallPackage } from '../../utils/packages';
import { ngServe, useSha } from '../../utils/project';
import { getGlobalVariable } from '../../utils/env';

export default async function () {
  assert(
    getGlobalVariable('argv')['esbuild'],
    'This test should not be called in the Webpack suite.',
  );

  // Forcibly remove in case another test doesn't clean itself up.
  await uninstallPackage('@angular/ssr');
  await ng('add', '@angular/ssr', '--skip-confirmation', '--skip-install');
  await useSha();
  await installWorkspacePackages();

  await writeMultipleFiles({
    // Replace the template of app.ng.html as it makes it harder to debug
    'src/app/app.html': '<router-outlet />',
    'src/app/app.routes.ts': `
      import { Routes } from '@angular/router';
      import { Home } from './home/home';

      export const routes: Routes = [
        { path: 'home', component: Home }
      ];
    `,
    'src/app/app.routes.server.ts': `
      import { RenderMode, ServerRoute } from '@angular/ssr';

      export const serverRoutes: ServerRoute[] = [
        { path: '**', renderMode: RenderMode.Server }
      ];
    `,
  });

  await silentNg('generate', 'component', 'home');

  const port = await ngServe('--ssl');

  // http 2
  await validateResponse('/main.js', /bootstrapApplication/, true);
  await validateResponse('/home', /home works/, true);

  // http 1.1
  await validateResponse('/main.js', /bootstrapApplication/, false);
  await validateResponse('/home', /home works/, false);

  async function validateResponse(
    pathname: string,
    match: RegExp,
    allowH2: boolean,
  ): Promise<void> {
    const response = await fetch(new URL(pathname, `https://localhost:${port}`), {
      dispatcher: new Agent({
        connect: {
          allowH2,
          rejectUnauthorized: false,
        },
      }),
    });

    const text = await response.text();
    assert.match(text, match);
    assert.equal(response.status, 200);
  }
}