import {join} from 'path';

import {readdirSync} from 'fs';

import {expectFileToExist, expectFileToMatch} from '../../utils/fs';

import {ng} from '../../utils/process';

import {expectGitToBeClean} from '../../utils/git';

export default function() {

// Can't use the `ng` helper because somewhere the environment gets

// stuck to the first build done

return ng('build', '--prod')

.then(() => expectFileToExist(join(process.cwd(), 'dist')))

// Check for cache busting hash script src

.then(() => expectFileToMatch('dist/index.html', /main\.[0-9a-f]{20}\.bundle\.js/))

.then(() => expectFileToMatch('dist/index.html', /styles\.[0-9a-f]{20}\.bundle\.css/))

// Defaults to AoT

.then(() => {

const main = readdirSync('./dist').find(name => !!name.match(/main.[a-z0-9]+\.bundle\.js/));

expectFileToMatch(`dist/${main}`, /bootstrapModuleFactory\(/);

})

// Check that the process didn't change local files.

.then(() => expectGitToBeClean());

}