const babel = require('babel-core');
const fs = require('fs');
const path = require('path');

const preset = require('..');

it(`compiles sample files`, () => {
  let options = {
    babelrc: false,
    presets: [preset],
    sourceMaps: true,
  };

  let samplesPath = path.resolve(__dirname, 'samples');
  let filenames = fs.readdirSync(samplesPath);

  for (let filename of filenames) {
    let { code, map, ast } = babel.transformFileSync(
      path.join(samplesPath, filename),
      options
    );

    expect(code).toBeDefined();
    expect(map).toBeDefined();
    expect(ast).toBeDefined();
  }
});

it(`aliases @expo/vector-icons`, () => {
  let options = {
    babelrc: false,
    presets: [preset],
    // Make the snapshot easier to read
    retainLines: true,
  };

  let sourceCode = `
import 'react-native-vector-icons';
require('react-native-vector-icons');

imposter.require('react-native-vector-icons');
imposter.import('react-native-vector-icons');
`;
  let { code } = babel.transform(sourceCode, options);

  expect(code).toMatch(/'@expo\/vector-icons'/);
  expect(code).toMatchSnapshot();
});

it(`composes with babel-plugin-module-resolver`, () => {
  let options = {
    babelrc: false,
    presets: [preset],
    plugins: [
      [
        'module-resolver',
        {
          alias: { 'react-native': '@expo/react-native' },
        },
      ],
    ],
    // Make the snapshot easier to read
    retainLines: true,
  };

  let sourceCode = `
import 'react-native';
import 'react-native-vector-icons';
`;
  let { code } = babel.transform(sourceCode, options);

  expect(code).toMatch(/'@expo\/react-native'/);
  expect(code).toMatch(/'@expo\/vector-icons'/);
  expect(code).toMatchSnapshot();
});