44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
import { CONTEXT_FETCH_SUCCESS } from '../actions/statuses';
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import { TIMELINE_DELETE } from '../actions/timelines';
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import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
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const initialState = ImmutableMap({
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ancestors: ImmutableMap(),
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descendants: ImmutableMap(),
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});
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const normalizeContext = (state, id, ancestors, descendants) => {
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const ancestorsIds = ancestors.map(ancestor => ancestor.get('id'));
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const descendantsIds = descendants.map(descendant => descendant.get('id'));
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return state.withMutations(map => {
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map.setIn(['ancestors', id], ancestorsIds);
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map.setIn(['descendants', id], descendantsIds);
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});
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};
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const deleteFromContexts = (state, id) => {
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state.getIn(['descendants', id], ImmutableList()).forEach(descendantId => {
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state = state.updateIn(['ancestors', descendantId], ImmutableList(), list => list.filterNot(itemId => itemId === id));
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});
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state.getIn(['ancestors', id], ImmutableList()).forEach(ancestorId => {
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state = state.updateIn(['descendants', ancestorId], ImmutableList(), list => list.filterNot(itemId => itemId === id));
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});
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state = state.deleteIn(['descendants', id]).deleteIn(['ancestors', id]);
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return state;
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};
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export default function contexts(state = initialState, action) {
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switch(action.type) {
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case CONTEXT_FETCH_SUCCESS:
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return normalizeContext(state, action.id, fromJS(action.ancestors), fromJS(action.descendants));
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case TIMELINE_DELETE:
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return deleteFromContexts(state, action.id);
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default:
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return state;
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}
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};
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