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instrumental/app/javascript/mastodon/reducers/contexts.js
Akihiko Odaki 023fe5181b Introduce flat layout to contexts reducer (#7150)
This allows to filter out replies in threads even if contexts of those
replies are not fetched.
2018-05-25 18:46:28 +02:00

106 lines
3.3 KiB
JavaScript

import {
ACCOUNT_BLOCK_SUCCESS,
ACCOUNT_MUTE_SUCCESS,
} from '../actions/accounts';
import { CONTEXT_FETCH_SUCCESS } from '../actions/statuses';
import { TIMELINE_DELETE, TIMELINE_UPDATE } from '../actions/timelines';
import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
const initialState = ImmutableMap({
inReplyTos: ImmutableMap(),
replies: ImmutableMap(),
});
const normalizeContext = (immutableState, id, ancestors, descendants) => immutableState.withMutations(state => {
state.update('inReplyTos', immutableAncestors => immutableAncestors.withMutations(inReplyTos => {
state.update('replies', immutableDescendants => immutableDescendants.withMutations(replies => {
function addReply({ id, in_reply_to_id }) {
if (in_reply_to_id) {
const siblings = replies.get(in_reply_to_id, ImmutableList());
if (!siblings.includes(id)) {
const index = siblings.findLastIndex(sibling => sibling.id < id);
replies.set(in_reply_to_id, siblings.insert(index + 1, id));
}
inReplyTos.set(id, in_reply_to_id);
}
}
if (ancestors[0]) {
addReply({ id, in_reply_to_id: ancestors[0].id });
}
if (descendants[0]) {
addReply({ id: descendants[0].id, in_reply_to_id: id });
}
[ancestors, descendants].forEach(statuses => statuses.forEach(addReply));
}));
}));
});
const deleteFromContexts = (immutableState, ids) => immutableState.withMutations(state => {
state.update('inReplyTos', immutableAncestors => immutableAncestors.withMutations(inReplyTos => {
state.update('replies', immutableDescendants => immutableDescendants.withMutations(replies => {
ids.forEach(id => {
const inReplyToIdOfId = inReplyTos.get(id);
const repliesOfId = replies.get(id);
const siblings = replies.get(inReplyToIdOfId);
if (siblings) {
replies.set(inReplyToIdOfId, siblings.filterNot(sibling => sibling === id));
}
if (repliesOfId) {
repliesOfId.forEach(reply => inReplyTos.delete(reply));
}
inReplyTos.delete(id);
replies.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) => {
if (status.in_reply_to_id) {
return state.withMutations(mutable => {
const replies = mutable.getIn(['replies', status.in_reply_to_id], ImmutableList());
mutable.setIn(['inReplyTos', status.id], status.in_reply_to_id);
if (!replies.includes(status.id)) {
mutable.setIn(['replies', status.id], replies.push(status.id));
}
});
}
return state;
};
export default function replies(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_UPDATE:
return updateContext(state, action.status);
default:
return state;
}
};