const fs = require('fs');
const path = require('path');
const prompts = require('prompts');

export const getInstalledProjects = async () => {
  const parentDirectory = path.resolve('./');
  const nextApps: any = [];
  const storybookApps: any = [];

  fs.readdirSync(parentDirectory).forEach((directory: any) => {
    const currentDirectory = path.join(parentDirectory, directory);
    if (fs.existsSync(path.join(currentDirectory, 'next.config.js'))) {
      nextApps.push(directory);
    } else if (fs.existsSync(path.join(currentDirectory, '.storybook'))) {
      storybookApps.push(directory);
    }
  });

  if (storybookApps.length === 0 && nextApps.length === 0) {
    console.error(
      '\x1b[31m',
      'Error:',
      '\x1b[0m',
      ' No storybook or next app instance found in your current directory.'
    );
  } else if (storybookApps.length === 0) {
    console.error(
      '\x1b[31m',
      'Error:',
      '\x1b[0m',
      ' No storybook instance found in your current directory.'
    );
  } else if (nextApps.length === 0) {
    console.error(
      '\x1b[31m',
      'Error:',
      '\x1b[0m',
      ' No next app instance found in your current directory.'
    );
  } else {
    const responseStorybook = await prompts({
      type: 'select',
      name: 'selectedOption',
      message: 'Select storybook instance which you want to link to webapp:',
      choices: storybookApps,
      initial: 0,
    });

    const responseNext = await prompts({
      type: 'select',
      name: 'selectedOption',
      message: 'Select webapp instance where you want to link storybook: ',
      choices: nextApps,
      initial: 0,
    });

    return {
      storybook: storybookApps[responseStorybook.selectedOption],
      next: nextApps[responseNext.selectedOption],
    };
  }
  return {};
};