apeman-app-rest/lib/validating/validate_data_vr.js

apeman app to handle restful endpoint.

/**
 * @function validateDataVr
 * @returns {?Object} - Error if failed
 */
'use strict'

const apemanerror = require('apemanerror')
const ApErrorCodes = apemanerror.ApErrorCodes

/** @lends validateDataVr */
function validateDataVr (data, vr) {
  if (!data) {
    return null
  }
  let attributes = data.attributes
  if (!attributes.hasOwnProperty('vr')) {
    return null
  }
  if (isNaN(Number(attributes.vr))) {
    return validateDataVr.versionError(attributes.vr, '/data/attributes/vr', attributes.vr)
  }
  let conflict = Number(attributes.vr) < Number(vr)

  if (conflict) {
    return validateDataVr.conflictError('/data/attributes/vr', attributes.vr, vr)
  } else {
    return null
  }
}

Object.assign(validateDataVr, {
  bulk (data, vrs) {
    let errors = data.map((data, i) =>
      validateDataVr(data, vrs[ i ])
    ).map((error, i) =>
      error ? Object.assign(error, {
        source: { pointer: `/data/${i}/attributes/vr` }
      }) : null
    ).filter((error) => !!error)
    return errors.length > 0 ? errors : null
  },

  versionError (pointer, given) {
    let code = ApErrorCodes.RESOURCE_VR_TYPE_ERROR
    return Object.assign(
      apemanerror.newError(code, pointer, {
        trigger: 'RestHandler',
        scope: { given, cause: 'isNaN' }
      }),
      { status: '409' }
    )
  },

  conflictError (pointer, given, should) {
    let code = ApErrorCodes.RESOURCE_DATA_CONFLICT_ERROR
    return Object.assign(
      apemanerror.newError(code, pointer, {
        trigger: 'RestHandler',
        scope: { given, should }
      }),
      { status: '409' }
    )
  }
})

module.exports = validateDataVr