codes for my hapi-bookshelf plugin

hapi-bookshelf.js

'use strict';

const Joi = require('joi');
const U = require('./utils');
const Schema = require('./schema');
const Pkg = require('./package.json');

const internals = {};
internals.PLUGIN_NAME = Pkg.name;

exports.register = function (server, options, next) {
  if (!options) throw new Error('Missing hapi-bookshelf plugin options');

  const validation = Joi.validate(options, Schema.options);
  if (!validation || validation.error) throw validation.error;

  const models = {};
  const opts = validation.value || options;
  const config = (typeof opts.config === 'object') ? opts.config
    : require(U.projectPath(opts.config))[opts.env];

  const knex = require('knex')(config);
  const bookshelf = require('bookshelf')(knex);

  opts.excluded = U.toArray(opts.excluded);

  const getFilePaths = U.getFiles.bind(null, opts.models);
  const modelPaths = getFilePaths(opts.excluded);

  U.toArray(opts.plugins).forEach((plugin) =>
    plugin ? bookshelf.plugin(plugin) : plugin
  );

  if (opts.base) {
    opts.excluded.push(opts.base);
    models.Base = bookshelf.Model = require(U.projectPath(opts.base))(bookshelf);
  } else {
    models.Base = bookshelf.Model;
  }

  modelPaths.forEach((path) => {
    const file = require(U.projectPath(path))(bookshelf);
    Object.assign(models, file);
  });

  // add plugin globals
  server.expose('bookshelf', bookshelf);
  server.expose('knex', bookshelf.knex);
  server.expose('models', models);
  // @todo extend with helper fn's
  // server.expose('api', Api);

  next();
};

exports.register.attributes = {
  pkg: Pkg
};