import { TIMELINE_UPDATE, TIMELINE_DELETE, TIMELINE_EXPAND_SUCCESS, TIMELINE_EXPAND_REQUEST, TIMELINE_EXPAND_FAIL, TIMELINE_SCROLL_TOP, TIMELINE_DISCONNECT, } from 'flavours/glitch/actions/timelines'; import { ACCOUNT_BLOCK_SUCCESS, ACCOUNT_MUTE_SUCCESS, ACCOUNT_UNFOLLOW_SUCCESS, } from 'flavours/glitch/actions/accounts'; import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable'; import compareId from 'flavours/glitch/util/compare_id'; const initialState = ImmutableMap(); const initialTimeline = ImmutableMap({ unread: 0, top: true, isLoading: false, hasMore: true, items: ImmutableList(), }); const expandNormalizedTimeline = (state, timeline, statuses, next, isPartial) => { return state.update(timeline, initialTimeline, map => map.withMutations(mMap => { mMap.set('isLoading', false); if (!next) mMap.set('hasMore', false); if (!statuses.isEmpty()) { mMap.update('items', ImmutableList(), oldIds => { const newIds = statuses.map(status => status.get('id')); const lastIndex = oldIds.findLastIndex(id => id !== null && compareId(id, newIds.last()) >= 0) + 1; const firstIndex = oldIds.take(lastIndex).findLastIndex(id => id !== null && compareId(id, newIds.first()) >= 0); if (firstIndex < 0) { return (isPartial ? newIds.unshift(null) : newIds).concat(oldIds.skip(lastIndex)); } return oldIds.take(firstIndex + 1).concat( isPartial && oldIds.get(firstIndex) !== null ? newIds.unshift(null) : newIds, oldIds.skip(lastIndex) ); }); } })); }; const updateTimeline = (state, timeline, status, references) => { const top = state.getIn([timeline, 'top']); const ids = state.getIn([timeline, 'items'], ImmutableList()); const includesId = ids.includes(status.get('id')); const unread = state.getIn([timeline, 'unread'], 0); if (includesId) { return state; } let newIds = ids; return state.update(timeline, initialTimeline, map => map.withMutations(mMap => { if (!top) mMap.set('unread', unread + 1); if (top && ids.size > 40) newIds = newIds.take(20); if (status.getIn(['reblog', 'id'], null) !== null) newIds = newIds.filterNot(item => references.includes(item)); mMap.set('items', newIds.unshift(status.get('id'))); })); }; const deleteStatus = (state, id, accountId, references) => { state.keySeq().forEach(timeline => { state = state.updateIn([timeline, 'items'], list => list.filterNot(item => item === id)); }); // Remove reblogs of deleted status references.forEach(ref => { state = deleteStatus(state, ref[0], ref[1], []); }); return state; }; const filterTimelines = (state, relationship, statuses) => { let references; statuses.forEach(status => { if (status.get('account') !== relationship.id) { return; } references = statuses.filter(item => item.get('reblog') === status.get('id')).map(item => [item.get('id'), item.get('account')]); state = deleteStatus(state, status.get('id'), status.get('account'), references); }); return state; }; const filterTimeline = (timeline, state, relationship, statuses) => state.updateIn([timeline, 'items'], ImmutableList(), list => list.filterNot(statusId => statuses.getIn([statusId, 'account']) === relationship.id )); const updateTop = (state, timeline, top) => { return state.update(timeline, initialTimeline, map => map.withMutations(mMap => { if (top) mMap.set('unread', 0); mMap.set('top', top); })); }; export default function timelines(state = initialState, action) { switch(action.type) { case TIMELINE_EXPAND_REQUEST: return state.update(action.timeline, initialTimeline, map => map.set('isLoading', true)); case TIMELINE_EXPAND_FAIL: return state.update(action.timeline, initialTimeline, map => map.set('isLoading', false)); case TIMELINE_EXPAND_SUCCESS: return expandNormalizedTimeline(state, action.timeline, fromJS(action.statuses), action.next, action.partial); case TIMELINE_UPDATE: return updateTimeline(state, action.timeline, fromJS(action.status), action.references); case TIMELINE_DELETE: return deleteStatus(state, action.id, action.accountId, action.references, action.reblogOf); case ACCOUNT_BLOCK_SUCCESS: case ACCOUNT_MUTE_SUCCESS: return filterTimelines(state, action.relationship, action.statuses); case ACCOUNT_UNFOLLOW_SUCCESS: return filterTimeline('home', state, action.relationship, action.statuses); case TIMELINE_SCROLL_TOP: return updateTop(state, action.timeline, action.top); case TIMELINE_DISCONNECT: return state.update( action.timeline, initialTimeline, map => map.update( 'items', items => items.first() ? items : items.unshift(null) ) ); default: return state; } };