ashtonsix / redux-plus Goto Github PK

import {
  createStore, combineReducers, createReducer, createSelector,
  applyMiddleware, compose, plus,
} from 'redux-plus'
import api from './api'
import toTrees, {getMaxDepth, getNodes} from './toTrees'

const reducer = combineReducers({
  categories: createReducer({
    GET_DATA: api('GET', '/categories'),
    GET_DATA_SUCCESS: (state, {payload: categories}) => categories,
  }, []),
  overview: createReducer({
    SELECT: (state, {payload: _id}) => {
      const index = state.selected.findIndex(id => id === _id)
      let selected
      if (index === -1) selected = state.selected.concat(_id)
      else selected = state.selected.slice(0, index + 1)
      return {...state, selected}
    },
    CLEAR_SELECTION: (state) => ({...state, selected: []})
  }, {selected: [], sortBy: 'allocation'}),
  detailID: createReducer({
    SET_DETAIL_VIEW: (state, {payload: id}) => id,
    CLEAR_DETAIL_VIEW: () => '',
    SELECT: () => '',
    CLEAR_SELECTION: () => '',
  }, ''),
  detail: createSelector(
    'detailID',
    'overview.selected', // TODO (redux-plus): investigate why dynamic selector doesn't work here
    'dataTree.id',
    'treeStats.nodes',
    (state, id1, selected, id3, nodes) => {
      console.log('1', id1, '2', selected.length, '3', id3)
      const id = id1 || selected.slice(-1)[0] || id3
      if (!nodes || !id) return null
      return nodes.find(node => id === node.id)
    }
  ),
  dataTree: createSelector(
    'categories',
    'overview.sortBy',
    (state, categories, sortBy) =>
      toTrees(categories, sortBy, ['desc'])[0]
  ),
  treeStats: createSelector(
    'dataTree',
    (state, dataTree) => ({
      maxDepth: !dataTree ? 0 : getMaxDepth(dataTree),
      leafNodes: !dataTree ? [] : getNodes(dataTree, ({children}) => !children.length),
      nodes: !dataTree ? [] : getNodes(dataTree),
    })
  )
})

const logger = applyMiddleware(store => next => action => {
  const result = next(action)
  console.log(action, store.getState().detail)
  return result
})
export const store = createStore(reducer, compose(plus, logger))
export default store