const path = require('path');
const Generator = require('yeoman-generator');
const mkdirp = require('mkdirp');

const baseDir = path.join(__dirname, '../../');

module.exports = class extends Generator {
  async prompting() {
    this.data = await this.prompt([
      {
        type: "input",
        name: "name",
        message: "Block Name",
        validate: (str) => {
          const matches = str.match(/\d+/g);

          if (matches != null) {
            return false;
          }

          return !!str;
        }
      },
      {
        type: "list",
        name: "baseView",
        message: "View Template",
        default: 'container',
        choices: ['container', 'alignfull'],
      },
      {
        type: "number",
        name: "remToPx",
        message: "Provide declaration of 1rem:",
        default: 16
      },
    ]);
  }

  writing() {
    const title = capitalize(this.data.name);
    const data = Object.assign(this.data, {
      title,
      blockFilename: title.toLowerCase().replace(/ /ig, '-'),
      blockClassName: title.toLowerCase().replace(/ /ig, '_'),
    });

    const pathDist = path.join(baseDir, 'blocks', data.blockFilename);

    this.fs.copyTpl(
      this.templatePath('src/template.template.hbs'),
      this.destinationPath(path.join(pathDist, 'src', data.blockFilename + '.template.hbs')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('src/styles/template.scss'),
      this.destinationPath(path.join(pathDist, 'src', 'styles', data.blockFilename + '.scss')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('src/scripts/template.js'),
      this.destinationPath(path.join(pathDist, 'src', 'scripts', data.blockFilename + '.js')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('src/images/demo.jpeg'),
      this.destinationPath(path.join(pathDist, 'src', 'images', 'demo.jpeg')),
      data
    );

    mkdirp.sync(path.join(pathDist, 'design'));

    this.fs.copyTpl(
      this.templatePath('config/default.cjs'),
      this.destinationPath(path.join(pathDist, 'config', 'default.cjs')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('package.json'),
      this.destinationPath(path.join(pathDist, 'package.json')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('data/default.json'),
      this.destinationPath(path.join(pathDist, 'data', 'default.json')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('data/advanced.json'),
      this.destinationPath(path.join(pathDist, 'data', 'advanced.json')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('README.md'),
      this.destinationPath(path.join(pathDist, 'README.md')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('.editorconfig'),
      this.destinationPath(path.join(pathDist, '.editorconfig')),
      data
    );

    this.fs.copyTpl(
      this.templatePath('.gitignore'),
      this.destinationPath(path.join(pathDist, '.gitignore')),
      data
    );
  }
};

function capitalize(str) {
  if (typeof str !== 'string') {
    return '';
  }

  return str
    .toLowerCase()
    .split(/[ -_]/g)
    .filter((word) => !!word)
    .map((word) => {
      return word.charAt(0).toUpperCase() + word.slice(1);
    })
    .join(' ');
}