/*
  WARNING: This is a very naive plugin implementation
  It is only meant for demonstation purposes.
  For a more complete implementation, see: https://github.com/gulp-community/gulp-pug
*/
var { Transform } = require('streamx');
var pug = require('pug');
var vinylContents = require('vinyl-contents');

function gulpPug(options) {
  return new Transform({
    transform: function (file, cb) {
      vinylContents(file, function (err, contents) {
        if (err) {
          return cb(err);
        }

        if (!contents) {
          return cb();
        }

        file.contents = pug.compile(contents.toString(), options)();
        cb(null, file);
      });
    },
  });
}