import { ActionAttribute } from '../actions/types'
import { VarDataType } from '../types'
import { createAttributeGlobalId } from './attribute'

/**
 * System produced attributes
 * @returns
 */
export const provideSystemProducedAttribute = (
  data: Pick<ActionAttribute, 'name' | 'datatype' | 'label' | 'description'> & {
    relId: string
  }
): ActionAttribute => {
  const { name, datatype, label, description, relId } = data
  const attr = {
    globalId: '',
    id: '',
    name,
    datatype,
    label,
    description,
    required: false,
    value: '',
  }

  const id = createAttributeGlobalId({
    relId: '',
    name: attr.name,
    datatype: attr.datatype,
  })

  const globalId = createAttributeGlobalId({
    relId,
    name: attr.name,
    datatype: attr.datatype,
  })

  return { ...attr, globalId, id }
}

export const EMPTY_ATTR_GLOBAL_ID = createAttributeGlobalId({
  relId: '$empty',
  name: 'empty',
  datatype: VarDataType.null,
})

export const emptyAttribute = provideSystemProducedAttribute({
  name: 'empty',
  label: '$Empty Value',
  datatype: VarDataType.null,
  description: '$Empty value',
  relId: '$empty',
})

export const serialize = (obj = {}) =>
  Object.entries(obj)
    .map(([key, val]) => `${key}=${val}`)
    .join(';')

export const deserialize = (str = '') =>
  Object.fromEntries(str.split(';').map(equalStr => equalStr.split('=')))