apemandb/lib/adding/from_files.js

Database for apeman project.

/**
 * Require addons from files.
 * @function fromFiles
 */

'use strict'

const aglob = require('aglob')
const colorprint = require('colorprint')
const path = require('path')
const { pascalcase } = require('stringcase')

/** @lends fromFiles */
function fromFiles (models, pattern) {
  let addons = {}
  aglob.sync(pattern)
    .filter((filename) => !/^_/.test(path.basename(filename)))
    .forEach((filename) => {
      let basename = path.basename(filename, path.extname(filename))
      let modelName = pascalcase(basename.replace(/[\._]addon$/, ''))
      let isKnownModel = models.hasOwnProperty(modelName)
      if (!isKnownModel) {
        colorprint.warn(`[apemandb] Skip addon for unknown model: ${modelName}`)
        return
      }
      let Model = models[ modelName ]
      let addon = require(path.resolve(filename))
      for (let name of Object.keys(addon)) {
        let conflict = !!Model[ name ]
        if (conflict) {
          throw new Error(`"${name}" is already defined in model: ${modelName}`)
        }
      }
      Object.assign(Model, addon)
      addons[ modelName ] = addon
    })
  return addons
}

module.exports = fromFiles