61 lines
2 KiB
JavaScript
61 lines
2 KiB
JavaScript
import { CONTEXT_FETCH_SUCCESS } from '../actions/statuses';
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import { TIMELINE_DELETE, TIMELINE_CONTEXT_UPDATE } from '../actions/timelines';
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import { Map as ImmutableMap, List as ImmutableList } 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 = ImmutableList(ancestors.map(ancestor => ancestor.id));
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const descendantsIds = ImmutableList(descendants.map(descendant => descendant.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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const updateContext = (state, status, references) => {
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return state.update('descendants', map => {
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references.forEach(parentId => {
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map = map.update(parentId, ImmutableList(), list => {
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if (list.includes(status.id)) {
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return list;
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}
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return list.push(status.id);
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});
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});
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return map;
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});
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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, action.ancestors, action.descendants);
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case TIMELINE_DELETE:
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return deleteFromContexts(state, action.id);
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case TIMELINE_CONTEXT_UPDATE:
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return updateContext(state, action.status, action.references);
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default:
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return state;
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}
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};
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