ark-demo/webapp/_templates/layer/new/prompt.js

const path = require('path');

// see types of prompts:
// https://github.com/enquirer/enquirer/tree/master/examples
//
const { promptArgs, getFiles, checkName } = require('../../promptUtils');

const VIEWS_DIR = `components${path.sep}views`;

const prompt = async ({ prompter, args }) => {
  let questions = [];

  if (!args.name) {
    questions.push({
      type: 'input',
      name: 'name',
      message: 'Name:',
    });
  }

  // Check name to remove layer word if the user added it by (his/her)self
  let answers = await promptArgs({ prompter, args, questions });
  answers.name = checkName(answers.name, 'Layer');

  const sourceFiles = await getFiles(`src${path.sep}data${path.sep}sources`);
  const sourcesOpts = sourceFiles.reduce((total, { name }) => {
    name = name.replace('.js', '');
    if (name.includes('Source')) {
      total.push({ title: name });
    }
    return total;
  }, []);

  if (!sourcesOpts.length) {
    throw new Error("There isn't any source to choose.");
  }

  questions = [
    {
      type: 'select',
      name: 'source_file',
      message: 'Choose a source',
      choices: [...sourcesOpts],
    },
  ];

  answers = {
    ...answers,
    ...(await promptArgs({ prompter, args: answers, questions })),
  };

  // // Detect what kind of layer we need (CartoSQLLayer, CartoBQTilerLayer)
  // const selectedSourceFileContent = readFile(`src${path.sep}data${path.sep}sources${path.sep}${answers.source_file}.js`);
  // const res = /(?:type: ')(?<type>sql|bigquery*)(?:')/g.exec(selectedSourceFileContent);
  // answers.type_source = 'sql';

  questions = [
    {
      type: 'confirm',
      name: 'attach',
      message: 'Do you want to attach to some view',
    },
  ];

  answers = {
    ...answers,
    ...(await promptArgs({ prompter, args: answers, questions })),
  };

  if (answers.attach) {
    const viewFiles = await getFiles(`src${path.sep}${VIEWS_DIR}`);
    const viewsOpts = viewFiles.reduce((total, { path, name }) => {
      name = name.replace('.js', '');
      if (/[A-Z]/.test(name[0])) {
        total.push({
          title: `${name}${
            path !== `${VIEWS_DIR}${path.sep}${name}`
              ? ' (' + path.replace(VIEWS_DIR, 'views') + ')'
              : ''
          }`,
        });
      }
      return total;
    }, []);

    if (!viewsOpts.length) {
      throw new Error("There isn't any view to choose.");
    }

    questions = [
      {
        type: 'select',
        name: 'view',
        message: 'Choose a view',
        choices: [...viewsOpts],
      },
    ];

    answers = {
      ...answers,
      ...(await promptArgs({ prompter, args: answers, questions })),
    };

    if (answers.view.includes(`views${path.sep}`)) {
      const selectedViewInitialPath = answers.view.split('(')[1].replace(')', '');
      answers.view_path = viewFiles.find((viewFile) => {
        return viewFile.path === selectedViewInitialPath.replace('views', VIEWS_DIR);
      }).path;
    } else {
      answers.view_path = `${VIEWS_DIR}${path.sep}${answers.view}.js`;
    }
  }

  return answers;
};

module.exports = {
  prompt,
};