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import {
ACCOUNT_BLOCK_SUCCESS,
ACCOUNT_MUTE_SUCCESS,
} from 'flavours/glitch/actions/accounts';
import { CONTEXT_FETCH_SUCCESS } from 'flavours/glitch/actions/statuses';
import { TIMELINE_DELETE, TIMELINE_CONTEXT_UPDATE } from 'flavours/glitch/actions/timelines';
import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
const initialState = ImmutableMap({
ancestors: ImmutableMap(),
descendants: ImmutableMap(),
});
const normalizeContext = (state, id, ancestors, descendants) => {
const ancestorsIds = ImmutableList(ancestors.map(ancestor => ancestor.id));
const descendantsIds = ImmutableList(descendants.map(descendant => descendant.id));
return state.withMutations(map => {
map.setIn(['ancestors', id], ancestorsIds);
map.setIn(['descendants', id], descendantsIds);
});
};
const deleteFromContexts = (immutableState, ids) => immutableState.withMutations(state => {
state.update('ancestors', immutableAncestors => immutableAncestors.withMutations(ancestors => {
state.update('descendants', immutableDescendants => immutableDescendants.withMutations(descendants => {
ids.forEach(id => {
descendants.get(id, ImmutableList()).forEach(descendantId => {
ancestors.update(descendantId, ImmutableList(), list => list.filterNot(itemId => itemId === id));
});
ancestors.get(id, ImmutableList()).forEach(ancestorId => {
descendants.update(ancestorId, ImmutableList(), list => list.filterNot(itemId => itemId === id));
});
descendants.delete(id);
ancestors.delete(id);
});
}));
}));
});
const filterContexts = (state, relationship, statuses) => {
const ownedStatusIds = statuses.filter(status => status.get('account') === relationship.id)
.map(status => status.get('id'));
return deleteFromContexts(state, ownedStatusIds);
};
const updateContext = (state, status, references) => {
return state.update('descendants', map => {
references.forEach(parentId => {
map = map.update(parentId, ImmutableList(), list => {
if (list.includes(status.id)) {
return list;
}
return list.push(status.id);
});
});
return map;
});
};
export default function contexts(state = initialState, action) {
switch(action.type) {
case ACCOUNT_BLOCK_SUCCESS:
case ACCOUNT_MUTE_SUCCESS:
return filterContexts(state, action.relationship, action.statuses);
case CONTEXT_FETCH_SUCCESS:
return normalizeContext(state, action.id, action.ancestors, action.descendants);
case TIMELINE_DELETE:
return deleteFromContexts(state, [action.id]);
case TIMELINE_CONTEXT_UPDATE:
return updateContext(state, action.status, action.references);
default:
return state;
}
};
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