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- import {
- NOTIFICATIONS_UPDATE,
- NOTIFICATIONS_EXPAND_SUCCESS,
- NOTIFICATIONS_EXPAND_REQUEST,
- NOTIFICATIONS_EXPAND_FAIL,
- NOTIFICATIONS_FILTER_SET,
- NOTIFICATIONS_CLEAR,
- NOTIFICATIONS_SCROLL_TOP,
- NOTIFICATIONS_LOAD_PENDING,
- NOTIFICATIONS_MOUNT,
- NOTIFICATIONS_UNMOUNT,
- NOTIFICATIONS_MARK_AS_READ,
- NOTIFICATIONS_SET_BROWSER_SUPPORT,
- NOTIFICATIONS_SET_BROWSER_PERMISSION,
- } from '../actions/notifications';
- import {
- ACCOUNT_BLOCK_SUCCESS,
- ACCOUNT_MUTE_SUCCESS,
- FOLLOW_REQUEST_AUTHORIZE_SUCCESS,
- FOLLOW_REQUEST_REJECT_SUCCESS,
- } from '../actions/accounts';
- import {
- MARKERS_FETCH_SUCCESS,
- } from '../actions/markers';
- import {
- APP_FOCUS,
- APP_UNFOCUS,
- } from '../actions/app';
- import { DOMAIN_BLOCK_SUCCESS } from 'mastodon/actions/domain_blocks';
- import { TIMELINE_DELETE, TIMELINE_DISCONNECT } from '../actions/timelines';
- import { fromJS, Map as ImmutableMap, List as ImmutableList } from 'immutable';
- import compareId from '../compare_id';
- const initialState = ImmutableMap({
- pendingItems: ImmutableList(),
- items: ImmutableList(),
- hasMore: true,
- top: false,
- mounted: 0,
- unread: 0,
- lastReadId: '0',
- readMarkerId: '0',
- isTabVisible: true,
- isLoading: 0,
- browserSupport: false,
- browserPermission: 'default',
- });
- const notificationToMap = notification => ImmutableMap({
- id: notification.id,
- type: notification.type,
- account: notification.account.id,
- created_at: notification.created_at,
- status: notification.status ? notification.status.id : null,
- report: notification.report ? fromJS(notification.report) : null,
- });
- const normalizeNotification = (state, notification, usePendingItems) => {
- const top = state.get('top');
- // Under currently unknown conditions, the client may receive duplicates from the server
- if (state.get('pendingItems').some((item) => item?.get('id') === notification.id) || state.get('items').some((item) => item?.get('id') === notification.id)) {
- return state;
- }
- if (usePendingItems || !state.get('pendingItems').isEmpty()) {
- return state.update('pendingItems', list => list.unshift(notificationToMap(notification))).update('unread', unread => unread + 1);
- }
- if (shouldCountUnreadNotifications(state)) {
- state = state.update('unread', unread => unread + 1);
- } else {
- state = state.set('lastReadId', notification.id);
- }
- return state.update('items', list => {
- if (top && list.size > 40) {
- list = list.take(20);
- }
- return list.unshift(notificationToMap(notification));
- });
- };
- const expandNormalizedNotifications = (state, notifications, next, isLoadingMore, isLoadingRecent, usePendingItems) => {
- // This method is pretty tricky because:
- // - existing notifications might be out of order
- // - the existing notifications may have gaps, most often explicitly noted with a `null` item
- // - ideally, we don't want it to reorder existing items
- // - `notifications` may include items that are already included
- // - this function can be called either to fill in a gap, or load newer items
- const lastReadId = state.get('lastReadId');
- const newItems = ImmutableList(notifications.map(notificationToMap));
- return state.withMutations(mutable => {
- if (!newItems.isEmpty()) {
- usePendingItems = isLoadingRecent && (usePendingItems || !mutable.get('pendingItems').isEmpty());
- mutable.update(usePendingItems ? 'pendingItems' : 'items', oldItems => {
- // If called to poll *new* notifications, we just need to add them on top without duplicates
- if (isLoadingRecent) {
- const idsToCheck = oldItems.map(item => item?.get('id')).toSet();
- const insertedItems = newItems.filterNot(item => idsToCheck.includes(item.get('id')));
- return insertedItems.concat(oldItems);
- }
- // If called to expand more (presumably older than any known to the WebUI), we just have to
- // add them to the bottom without duplicates
- if (isLoadingMore) {
- const idsToCheck = oldItems.map(item => item?.get('id')).toSet();
- const insertedItems = newItems.filterNot(item => idsToCheck.includes(item.get('id')));
- return oldItems.concat(insertedItems);
- }
- // Now this gets tricky, as we don't necessarily know for sure where the gap to fill is,
- // and some items in the timeline may not be properly ordered.
- // However, we know that `newItems.last()` is the oldest item that was requested and that
- // there is no “hole” between `newItems.last()` and `newItems.first()`.
- // First, find the furthest (if properly sorted, oldest) item in the notifications that is
- // newer than the oldest fetched one, as it's most likely that it delimits the gap.
- // Start the gap *after* that item.
- const lastIndex = oldItems.findLastIndex(item => item !== null && compareId(item.get('id'), newItems.last().get('id')) >= 0) + 1;
- // Then, try to find the furthest (if properly sorted, oldest) item in the notifications that
- // is newer than the most recent fetched one, as it delimits a section comprised of only
- // items older or within `newItems` (or that were deleted from the server, so should be removed
- // anyway).
- // Stop the gap *after* that item.
- const firstIndex = oldItems.take(lastIndex).findLastIndex(item => item !== null && compareId(item.get('id'), newItems.first().get('id')) > 0) + 1;
- // At this point:
- // - no `oldItems` after `firstIndex` is newer than any of the `newItems`
- // - all `oldItems` after `lastIndex` are older than every of the `newItems`
- // - it is possible for items in the replaced slice to be older than every `newItems`
- // - it is possible for items before `firstIndex` to be in the `newItems` range
- // Therefore:
- // - to avoid losing items, items from the replaced slice that are older than `newItems`
- // should be added in the back.
- // - to avoid duplicates, `newItems` should be checked the first `firstIndex` items of
- // `oldItems`
- const idsToCheck = oldItems.take(firstIndex).map(item => item?.get('id')).toSet();
- const insertedItems = newItems.filterNot(item => idsToCheck.includes(item.get('id')));
- const olderItems = oldItems.slice(firstIndex, lastIndex).filter(item => item !== null && compareId(item.get('id'), newItems.last().get('id')) < 0);
- return oldItems.take(firstIndex).concat(
- insertedItems,
- olderItems,
- oldItems.skip(lastIndex),
- );
- });
- }
- if (!next) {
- mutable.set('hasMore', false);
- }
- if (shouldCountUnreadNotifications(state)) {
- mutable.set('unread', mutable.get('pendingItems').count(item => item !== null) + mutable.get('items').count(item => item && compareId(item.get('id'), lastReadId) > 0));
- } else {
- const mostRecent = newItems.find(item => item !== null);
- if (mostRecent && compareId(lastReadId, mostRecent.get('id')) < 0) {
- mutable.set('lastReadId', mostRecent.get('id'));
- }
- }
- mutable.update('isLoading', (nbLoading) => nbLoading - 1);
- });
- };
- const filterNotifications = (state, accountIds, type) => {
- const helper = list => list.filterNot(item => item !== null && accountIds.includes(item.get('account')) && (type === undefined || type === item.get('type')));
- return state.update('items', helper).update('pendingItems', helper);
- };
- const clearUnread = (state) => {
- state = state.set('unread', state.get('pendingItems').size);
- const lastNotification = state.get('items').find(item => item !== null);
- return state.set('lastReadId', lastNotification ? lastNotification.get('id') : '0');
- };
- const updateTop = (state, top) => {
- state = state.set('top', top);
- if (!shouldCountUnreadNotifications(state)) {
- state = clearUnread(state);
- }
- return state;
- };
- const deleteByStatus = (state, statusId) => {
- const lastReadId = state.get('lastReadId');
- if (shouldCountUnreadNotifications(state)) {
- const deletedUnread = state.get('items').filter(item => item !== null && item.get('status') === statusId && compareId(item.get('id'), lastReadId) > 0);
- state = state.update('unread', unread => unread - deletedUnread.size);
- }
- const helper = list => list.filterNot(item => item !== null && item.get('status') === statusId);
- const deletedUnread = state.get('pendingItems').filter(item => item !== null && item.get('status') === statusId && compareId(item.get('id'), lastReadId) > 0);
- state = state.update('unread', unread => unread - deletedUnread.size);
- return state.update('items', helper).update('pendingItems', helper);
- };
- const updateMounted = (state) => {
- state = state.update('mounted', count => count + 1);
- if (!shouldCountUnreadNotifications(state, state.get('mounted') === 1)) {
- state = state.set('readMarkerId', state.get('lastReadId'));
- state = clearUnread(state);
- }
- return state;
- };
- const updateVisibility = (state, visibility) => {
- state = state.set('isTabVisible', visibility);
- if (!shouldCountUnreadNotifications(state)) {
- state = state.set('readMarkerId', state.get('lastReadId'));
- state = clearUnread(state);
- }
- return state;
- };
- const shouldCountUnreadNotifications = (state, ignoreScroll = false) => {
- const isTabVisible = state.get('isTabVisible');
- const isOnTop = state.get('top');
- const isMounted = state.get('mounted') > 0;
- const lastReadId = state.get('lastReadId');
- const lastItem = state.get('items').findLast(item => item !== null);
- const lastItemReached = !state.get('hasMore') || lastReadId === '0' || (lastItem && compareId(lastItem.get('id'), lastReadId) <= 0);
- return !(isTabVisible && (ignoreScroll || isOnTop) && isMounted && lastItemReached);
- };
- const recountUnread = (state, last_read_id) => {
- return state.withMutations(mutable => {
- if (compareId(last_read_id, mutable.get('lastReadId')) > 0) {
- mutable.set('lastReadId', last_read_id);
- }
- if (compareId(last_read_id, mutable.get('readMarkerId')) > 0) {
- mutable.set('readMarkerId', last_read_id);
- }
- if (state.get('unread') > 0 || shouldCountUnreadNotifications(state)) {
- mutable.set('unread', mutable.get('pendingItems').count(item => item !== null) + mutable.get('items').count(item => item && compareId(item.get('id'), last_read_id) > 0));
- }
- });
- };
- export default function notifications(state = initialState, action) {
- switch(action.type) {
- case MARKERS_FETCH_SUCCESS:
- return action.markers.notifications ? recountUnread(state, action.markers.notifications.last_read_id) : state;
- case NOTIFICATIONS_MOUNT:
- return updateMounted(state);
- case NOTIFICATIONS_UNMOUNT:
- return state.update('mounted', count => count - 1);
- case APP_FOCUS:
- return updateVisibility(state, true);
- case APP_UNFOCUS:
- return updateVisibility(state, false);
- case NOTIFICATIONS_LOAD_PENDING:
- return state.update('items', list => state.get('pendingItems').concat(list.take(40))).set('pendingItems', ImmutableList()).set('unread', 0);
- case NOTIFICATIONS_EXPAND_REQUEST:
- return state.update('isLoading', (nbLoading) => nbLoading + 1);
- case NOTIFICATIONS_EXPAND_FAIL:
- return state.update('isLoading', (nbLoading) => nbLoading - 1);
- case NOTIFICATIONS_FILTER_SET:
- return state.set('items', ImmutableList()).set('pendingItems', ImmutableList()).set('hasMore', true);
- case NOTIFICATIONS_SCROLL_TOP:
- return updateTop(state, action.top);
- case NOTIFICATIONS_UPDATE:
- return normalizeNotification(state, action.notification, action.usePendingItems);
- case NOTIFICATIONS_EXPAND_SUCCESS:
- return expandNormalizedNotifications(state, action.notifications, action.next, action.isLoadingMore, action.isLoadingRecent, action.usePendingItems);
- case ACCOUNT_BLOCK_SUCCESS:
- return filterNotifications(state, [action.relationship.id]);
- case ACCOUNT_MUTE_SUCCESS:
- return action.relationship.muting_notifications ? filterNotifications(state, [action.relationship.id]) : state;
- case DOMAIN_BLOCK_SUCCESS:
- return filterNotifications(state, action.accounts);
- case FOLLOW_REQUEST_AUTHORIZE_SUCCESS:
- case FOLLOW_REQUEST_REJECT_SUCCESS:
- return filterNotifications(state, [action.id], 'follow_request');
- case NOTIFICATIONS_CLEAR:
- return state.set('items', ImmutableList()).set('pendingItems', ImmutableList()).set('hasMore', false);
- case TIMELINE_DELETE:
- return deleteByStatus(state, action.id);
- case TIMELINE_DISCONNECT:
- return action.timeline === 'home' ?
- state.update(action.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(null) : items) :
- state;
- case NOTIFICATIONS_MARK_AS_READ:
- const lastNotification = state.get('items').find(item => item !== null);
- return lastNotification ? recountUnread(state, lastNotification.get('id')) : state;
- case NOTIFICATIONS_SET_BROWSER_SUPPORT:
- return state.set('browserSupport', action.value);
- case NOTIFICATIONS_SET_BROWSER_PERMISSION:
- return state.set('browserPermission', action.value);
- default:
- return state;
- }
- };
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