WebKit GIT trees - WebKit-https.git/blob

   1 import { ADD_TODO, DELETE_TODO, EDIT_TODO, COMPLETE_TODO, COMPLETE_ALL, CLEAR_COMPLETED } from '../constants/ActionTypes'
   2
   3 const initialState = []
   4
   5 export default function todos(state = initialState, action) {
   6   switch (action.type) {
   7     case ADD_TODO:
   8       return [
   9         {
  10           id: state.reduce((maxId, todo) => Math.max(todo.id, maxId), -1) + 1,
  11           completed: false,
  12           text: action.text
  13         },
  14         ...state
  15       ]
  16
  17     case DELETE_TODO:
  18       return state.filter(todo =>
  19         todo.id !== action.id
  20       )
  21
  22     case EDIT_TODO:
  23       return state.map(todo =>
  24         todo.id === action.id ?
  25           { ...todo, text: action.text } :
  26           todo
  27       )
  28
  29     case COMPLETE_TODO:
  30       return state.map(todo =>
  31         todo.id === action.id ?
  32           { ...todo, completed: !todo.completed } :
  33           todo
  34       )
  35
  36     case COMPLETE_ALL:
  37       const areAllMarked = state.every(todo => todo.completed)
  38       return state.map(todo => ({
  39         ...todo,
  40         completed: !areAllMarked
  41       }))
  42
  43     case CLEAR_COMPLETED:
  44       return state.filter(todo => todo.completed === false)
  45
  46     default:
  47       return state
  48   }
  49 }