all files / src/ createReducer.js

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import { ADD_ARRAY_VALUE, BLUR, CHANGE, DESTROY, FOCUS, INITIALIZE, REMOVE_ARRAY_VALUE, RESET,
  START_ASYNC_VALIDATION, START_SUBMIT, STOP_ASYNC_VALIDATION, STOP_SUBMIT, SUBMIT_FAILED,
  SWAP_ARRAY_VALUES, TOUCH, UNTOUCH } from './actionTypes'
import forIn from 'lodash.forin'
import flattenPaths from './flattenPaths'
 
const createReducer = ({empty, getIn, setIn, deleteIn, deleteWithPath, fromJS}) => {
 
  const behaviors = {
    [ADD_ARRAY_VALUE](state) {
      return state
    },
    [BLUR](state, {field, value, touch}) {
      let result = state
      if (value !== undefined) {
        result = setIn(result, `values.${field}`, value)
      }
      result = deleteIn(result, 'active')
      if (touch) {
        result = setIn(result, `fields.${field}.touched`, true)
      }
      return result
    },
    [CHANGE](state, {field, value, touch}) {
      let result = state
      Eif (value !== undefined) {
        result = setIn(result, `values.${field}`, value)
      }
      result = deleteIn(result, `fields.${field}.asyncError`)
      result = deleteIn(result, `fields.${field}.submitError`)
      if (touch) {
        result = setIn(result, `fields.${field}.touched`, true)
      }
      return result
    },
    [FOCUS](state, {field}) {
      let result = state
      const previouslyActive = getIn(state, 'active');
      result = deleteIn(result, `fields.${previouslyActive}.active`)
      result = setIn(result, `fields.${field}.visited`, true)
      result = setIn(result, `fields.${field}.active`, true)
      result = setIn(result, 'active', field)
      return result
    },
    [INITIALIZE](state, {data}) {
      const mapData = fromJS(data)
      let result = empty // clean all field state
      result = setIn(result, 'values', mapData)
      result = setIn(result, 'initial', mapData)
      return result
    },
    [REMOVE_ARRAY_VALUE](state) {
      return state
    },
    [RESET](state) {
      const values = getIn(state, 'initial')
      let result = empty
      result = setIn(result, 'values', values)
      result = setIn(result, 'initial', values)
      return result
    },
    [START_ASYNC_VALIDATION](state, {field}) {
      return setIn(state, 'asyncValidating', field || true)
    },
    [START_SUBMIT](state) {
      return setIn(state, 'submitting', true)
    },
    [STOP_ASYNC_VALIDATION](state, {errors}) {
      let result = state
      result = deleteIn(result, 'asyncValidating')
      if (errors && Object.keys(errors).length) {
        const {_error, ...fieldErrors} = errors
        if (_error) {
          result = setIn(result, 'error', _error)
        }
        if (Object.keys(fieldErrors).length) {
          result = setIn(result, 'asyncErrors', fromJS(fieldErrors))
        } else {
          result = deleteIn(result, 'asyncErrors')
        }
      } else {
        result = deleteIn(result, 'error')
        result = deleteIn(result, 'asyncErrors')
      }
      return result
    },
    [STOP_SUBMIT](state, {errors}) {
      let result = state
      result = deleteIn(result, 'submitting')
      result = deleteIn(result, 'submitFailed')
      if (errors && Object.keys(errors).length) {
        const {_error, ...fieldErrors} = errors
        if (_error) {
          result = setIn(result, 'error', _error)
        }
        if (Object.keys(fieldErrors).length) {
          result = setIn(result, 'submitErrors', fromJS(fieldErrors))
        } else {
          result = deleteIn(result, 'submitErrors')
        }
        result = setIn(result, 'submitFailed', true)
      } else {
        result = deleteIn(result, 'error')
        result = deleteIn(result, 'submitErrors')
      }
      return result
    },
    [SUBMIT_FAILED](state) {
      let result = state
      result = setIn(result, 'submitFailed', true)
      result = deleteIn(result, 'submitting')
      return result
    },
    [SWAP_ARRAY_VALUES](state) {
      return state
    },
    [TOUCH](state, {fields}) {
      let result = state
      fields.forEach(field => result = setIn(result, `fields.${field}.touched`, true))
      return result
    },
    [UNTOUCH](state, {fields}) {
      let result = state
      fields.forEach(field => result = deleteIn(result, `fields.${field}.touched`))
      return result
    }
  }
 
  const reducer = (state = empty, action = {}) => {
    const behavior = behaviors[ action.type ]
    return behavior ? behavior(state, action) : state
  }
 
  function formReducer(state = empty, action = {}) {
    const { form, ...rest } = action // eslint-disable-line no-redeclare
    if (!form) {
      return state
    }
    Iif (action.type === DESTROY) {
      return Object.keys(state).reduce((accumulator, formName) =>
        formName === form ? accumulator : {
          ...accumulator,
          [formName]: state[ formName ]
        }, {})
    }
    const formState = getIn(state, form)
    const result = reducer(formState, rest)
    return result === formState ? state : setIn(state, form, result)
  }
 
  /**
   * Adds additional functionality to the reducer
   */
  function decorate(target) {
    // put back plugin and normalize?
    return target
  }
 
  return decorate(formReducer)
}
 
export default createReducer