import { expectFileToMatch, writeFile } from '../../utils/fs';
import { ng, silentNpm } from '../../utils/process';
import { updateJsonFile } from '../../utils/project';
import { expectToFail } from '../../utils/utils';

export default async function () {
  // Force duplicate modules
  await updateJsonFile('package.json', json => {
    json.dependencies = {
      ...json.dependencies,
      'tslib': '2.0.0',
      'tslib-1': 'npm:tslib@1.13.0',
      'tslib-1-copy': 'npm:tslib@1.13.0',
    };
  });

  await silentNpm('install');

  await writeFile('./src/main.ts',
    `
        import { __assign as __assign_0 } from 'tslib';
        import { __assign as __assign_1 } from 'tslib-1';
        import { __assign as __assign_2 } from 'tslib-1-copy';

        console.log({
            __assign_0,
            __assign_1,
            __assign_2,
        })
    `);

  const { stderr } = await ng('build', '--verbose', '--no-vendor-chunk', '--no-progress');
  const outFile = 'dist/test-project/main.js';

  if (/\[DedupeModuleResolvePlugin\]:.+tslib-1-copy -> .+tslib-1/.test(stderr)) {
    await expectFileToMatch(outFile, './node_modules/tslib-1/tslib.es6.js');
    await expectToFail(() => expectFileToMatch(outFile, './node_modules/tslib-1-copy/tslib.es6.js'));
  } else if (/\[DedupeModuleResolvePlugin\]:.+tslib-1 -> .+tslib-1-copy/.test(stderr)) {
    await expectFileToMatch(outFile, './node_modules/tslib-1-copy/tslib.es6.js');
    await expectToFail(() => expectFileToMatch(outFile, './node_modules/tslib-1/tslib.es6.js'));
  } else {
    console.error(`\n\n\n${stderr}\n\n\n`);
    throw new Error('Expected stderr to contain [DedupeModuleResolvePlugin] log for tslib.');
  }

  await expectFileToMatch(outFile, './node_modules/tslib/tslib.es6.js');
}
