ndut-api/ndut/helper/prep-list.js

API for Ndut Framework

module.exports = function (params = {}, model = '_array_', noParseQuery) {
  // TODO: params needs to be cleaned up! Replaced keys should be dropped from params
  const { _, getNdutConfig } = this.ndut.helper
  const options = getNdutConfig('ndut-api')
  const { maxPageSize, defPageSize } = options
  if (!_.isString(model)) model = model.name
  let limit = parseInt(params.pageSize) || defPageSize
  if (limit > maxPageSize) limit = maxPageSize
  if (limit < 1) limit = 1
  let page = parseInt(params.page) || 1
  if (page < 1) page = 1
  let skip = (page - 1) * limit
  if (params.offset) {
    skip = parseInt(params.offset) || skip
    page = undefined
  }
  if (skip < 0) skip = 0
  let where = {}
  if (params.query && !noParseQuery) {
    try {
      where = JSON.parse(params.query)
    } catch (err) {
      throw new this.Boom.internal('cantParseDatasourceQuery', { ndut: 'api' })
    }
  }
  let order = params.sort
  if (!params.sort) {
    if (model === '_array_') {
      // TODO: array order
    } else {
      const { schemas } = this.ndutDb
      const schema = _.find(schemas, { name: model }) || {}
      const keys = _.keys(schema.properties)
      const found = _.intersection(['ts', 'updated_at', 'updatedAt', 'created_at', 'createdAt'], keys)
      if (found[0]) order = [`${found[0]} DESC`]
      else order = ['id ASC']
    }
  } else if (_.isString(order)) {
    order = _.map(order.split(','), item => {
      const parts = _.map(_.trim(item).split(':'), i => _.trim(i))
      if (!parts[1]) parts[1] = 'ASC'
      parts[1] = parts[1].toUpperCase()
      if (!['ASC', 'DESC'].includes(parts[1])) parts[1] = 'ASC'
      return parts.join(' ')
    })
  }
  let having
  if (params.agg && params.having) {
    try {
      having = JSON.parse(params.having)
    } catch (err) {
      throw new this.Boom.internal('cantParseDatasourceHaving', { ndut: 'api' })
    }
  }
  return { limit, page, skip, order, where, distinct: params.distinct || '',
    agg: params.agg || '', fn: params.fn, having, rawQuery: params.query }
}