birla/birla.js

CLI tool to easily create new file-structure scaffolds from template directories.

const path = require('path');
const fs = require('fs-extra');
const changeCase = require('change-case');

const walk = (rootdir, callback) => {
  fs.readdirSync(rootdir).forEach(filename => {
    const filepath = path.join(rootdir, filename);
    const isDir = fs.statSync(filepath).isDirectory();
    if (isDir) {
      walk(filepath, callback);
    }
    callback(filepath, filename, isDir);
  });
};

const copyTemplate = async (templateName, dest, pathTemplate) => {
  const srcDir = path.join(pathTemplate, 'birla-templates', templateName);
  await fs.copy(srcDir, dest);
};

const renameFiles = (names, dest) => {
  const dir = path.join(process.cwd(), dest);
  walk(dir, (filepath, filename) => {
    let newpath = filepath;
    if (filename.includes('$NAME_c')) {
      newpath = filepath.replace(/\$NAME_c(?!.*\$NAME_c)/, names.camel);
    } else if (filename.includes('$NAME_p')) {
      newpath = filepath.replace(/\$NAME_p(?!.*\$NAME_p)/, names.pascal);
    } else if (filename.includes('$NAME_s')) {
      newpath = filepath.replace(/\$NAME_s(?!.*\$NAME_s)/, names.snake);
    } else if (filename.includes('$NAME_h')) {
      newpath = filepath.replace(/\$NAME_h(?!.*\$NAME_h)/, names.param);
    } else if (filename.includes('$NAME')) {
      newpath = filepath.replace(/\$NAME(?!.*\$NAME)/, names.default);
    }
    fs.renameSync(filepath, newpath);
  });
};

const changeContent = (names, dest) => {
  const dir = path.join(process.cwd(), dest);
  walk(dir, (filepath, _, isDir) => {
    if (!isDir) {
      const origContent = fs.readFileSync(filepath, 'utf-8');
      const newContent = origContent
        .replace(/\$NAME_c/g, names.camel)
        .replace(/\$NAME_p/g, names.pascal)
        .replace(/\$NAME_s/g, names.snake)
        .replace(/\$NAME_h/g, names.param)
        .replace(/\$NAME/g, names.default);
      fs.writeFileSync(filepath, newContent);
    }
  });
};

const birla = async (name, templateName, dest, pathTemplate) => {
  pathTemplate = pathTemplate || process.cwd();

  console.log('Starting copyTemplate process');
  await copyTemplate(templateName, dest, pathTemplate);

  const names = { default: name };
  names.camel = changeCase.camelCase(name);
  names.pascal = changeCase.pascalCase(name);
  names.snake = changeCase.snakeCase(name);
  names.param = changeCase.paramCase(name);

  console.log('Starting renameFiles process');
  renameFiles(names, dest);

  console.log('Starting changeContent process');
  changeContent(names, dest);
};

module.exports = birla;