import { Map as ImmutableMap, List as ImmutableList } from 'immutable'; import { CONVERSATIONS_MOUNT, CONVERSATIONS_UNMOUNT, CONVERSATIONS_FETCH_REQUEST, CONVERSATIONS_FETCH_SUCCESS, CONVERSATIONS_FETCH_FAIL, CONVERSATIONS_UPDATE, CONVERSATIONS_READ, } from '../actions/conversations'; import compareId from '../compare_id'; const initialState = ImmutableMap({ items: ImmutableList(), isLoading: false, hasMore: true, mounted: false, }); const conversationToMap = item => ImmutableMap({ id: item.id, unread: item.unread, accounts: ImmutableList(item.accounts.map(a => a.id)), last_status: item.last_status ? item.last_status.id : null, }); const updateConversation = (state, item) => state.update('items', list => { const index = list.findIndex(x => x.get('id') === item.id); const newItem = conversationToMap(item); if (index === -1) { return list.unshift(newItem); } else { return list.set(index, newItem); } }); const expandNormalizedConversations = (state, conversations, next) => { let items = ImmutableList(conversations.map(conversationToMap)); return state.withMutations(mutable => { if (!items.isEmpty()) { mutable.update('items', list => { list = list.map(oldItem => { const newItemIndex = items.findIndex(x => x.get('id') === oldItem.get('id')); if (newItemIndex === -1) { return oldItem; } const newItem = items.get(newItemIndex); items = items.delete(newItemIndex); return newItem; }); list = list.concat(items); return list.sortBy(x => x.get('last_status'), (a, b) => compareId(a, b) * -1); }); } if (!next) { mutable.set('hasMore', false); } mutable.set('isLoading', false); }); }; export default function conversations(state = initialState, action) { switch (action.type) { case CONVERSATIONS_FETCH_REQUEST: return state.set('isLoading', true); case CONVERSATIONS_FETCH_FAIL: return state.set('isLoading', false); case CONVERSATIONS_FETCH_SUCCESS: return expandNormalizedConversations(state, action.conversations, action.next); case CONVERSATIONS_UPDATE: return updateConversation(state, action.conversation); case CONVERSATIONS_MOUNT: return state.update('mounted', count => count + 1); case CONVERSATIONS_UNMOUNT: return state.update('mounted', count => count - 1); case CONVERSATIONS_READ: return state.update('items', list => list.map(item => { if (item.get('id') === action.id) { return item.set('unread', false); } return item; })); default: return state; } };