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import {
FAVOURITED_STATUSES_FETCH_SUCCESS,
FAVOURITED_STATUSES_EXPAND_SUCCESS
} from '../actions/favourites';
import Immutable from 'immutable';
const initialState = Immutable.Map({
favourites: Immutable.Map({
next: null,
loaded: false,
items: Immutable.List()
})
});
const normalizeList = (state, listType, statuses, next) => {
return state.update(listType, listMap => listMap.withMutations(map => {
map.set('next', next);
map.set('loaded', true);
map.set('items', Immutable.List(statuses.map(item => item.id)));
}));
};
const appendToList = (state, listType, statuses, next) => {
return state.update(listType, listMap => listMap.withMutations(map => {
map.set('next', next);
map.set('items', map.get('items').push(...statuses.map(item => item.id)));
}));
};
export default function statusLists(state = initialState, action) {
switch(action.type) {
case FAVOURITED_STATUSES_FETCH_SUCCESS:
return normalizeList(state, 'favourites', action.statuses, action.next);
case FAVOURITED_STATUSES_EXPAND_SUCCESS:
return appendToList(state, 'favourites', action.statuses, action.next);
default:
return state;
}
};
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