gab-social/app/javascript/gabsocial/reducers/notifications.js

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import {
NOTIFICATIONS_INITIALIZE,
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NOTIFICATIONS_UPDATE,
NOTIFICATIONS_EXPAND_SUCCESS,
NOTIFICATIONS_EXPAND_REQUEST,
NOTIFICATIONS_EXPAND_FAIL,
NOTIFICATIONS_FILTER_SET,
NOTIFICATIONS_CLEAR,
NOTIFICATIONS_SCROLL_TOP,
NOTIFICATIONS_UPDATE_QUEUE,
NOTIFICATIONS_DEQUEUE,
MAX_QUEUED_NOTIFICATIONS,
NOTIFICATIONS_MARK_READ,
} from '../actions/notifications'
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import {
ACCOUNT_BLOCK_SUCCESS,
ACCOUNT_MUTE_SUCCESS,
} from '../actions/accounts'
import { TIMELINE_DELETE, TIMELINE_DISCONNECT } from '../actions/timelines'
import { Range, Map as ImmutableMap, List as ImmutableList } from 'immutable'
import { unreadCount, lastReadNotificationId } from '../initial_state'
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import compareId from '../utils/compare_id';
const DEFAULT_NOTIFICATIONS_LIMIT = 20
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const initialState = ImmutableMap({
items: ImmutableList(),
sortedItems: ImmutableList(),
lastId: null,
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hasMore: true,
top: false,
unread: 0,
isLoading: false,
queuedNotifications: ImmutableList(), //max = MAX_QUEUED_NOTIFICATIONS
totalQueuedNotificationsCount: 0, //used for queuedItems overflow for MAX_QUEUED_NOTIFICATIONS+
lastReadId: -1,
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filter: ImmutableMap({
active: 'all',
onlyVerified: false,
onlyFollowing: false,
}),
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});
const notificationToMap = (notification) => ImmutableMap({
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id: notification.id,
type: notification.type,
account: notification.account.id,
created_at: notification.created_at,
status: notification.status ? notification.status.id : null,
});
const makeSortedNotifications = (state) => {
let finalSortedItems = ImmutableList()
const items = state.get('items')
const lastReadId = state.get('lastReadId')
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const chunks = Range(0, items.count(), DEFAULT_NOTIFICATIONS_LIMIT)
.map((chunkStart) => items.slice(chunkStart, chunkStart + DEFAULT_NOTIFICATIONS_LIMIT))
chunks.forEach((chunk) => {
let sortedItems = ImmutableList()
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let follows = ImmutableList()
let likes = {}
let reposts = {}
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let followIndex = -1
let indexesForStatusesForReposts = {}
let indexesForStatusesForFavorites = {}
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chunk.forEach((notification) => {
if (!!notification) {
const statusId = notification.get('status')
const type = notification.get('type')
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switch (type) {
case 'follow': {
if (followIndex === -1) followIndex = sortedItems.size
sortedItems = sortedItems.set(followIndex, ImmutableMap())
follows = follows.set(follows.size, notification)
break
}
case 'favourite': {
if (likes[statusId] === undefined) {
let size = sortedItems.size
sortedItems = sortedItems.set(size, ImmutableMap())
indexesForStatusesForFavorites[statusId] = size
likes[statusId] = []
}
likes[statusId].push({
account: notification.get('account'),
created_at: notification.get('created_at'),
id: notification.get('id'),
})
break
}
case 'reblog': {
if (reposts[statusId] === undefined) {
let size = sortedItems.size
sortedItems = sortedItems.set(size, ImmutableMap())
indexesForStatusesForReposts[statusId] = size
reposts[statusId] = []
}
reposts[statusId].push({
account: notification.get('account'),
created_at: notification.get('created_at'),
id: notification.get('id'),
})
break
}
default: {
sortedItems = sortedItems.set(sortedItems.size, notification)
break
}
}
if (follows.size > 0) {
sortedItems = sortedItems.set(followIndex, ImmutableMap({
follow: follows,
}))
}
if (Object.keys(likes).length > 0) {
for (const statusId in likes) {
if (likes.hasOwnProperty(statusId)) {
const likeArr = likes[statusId]
const accounts = likeArr.map((l) => l.account)
const lastUpdated = likeArr[0]['created_at']
const isUnread = parseInt(likeArr[0]['id']) > lastReadId
sortedItems = sortedItems.set(indexesForStatusesForFavorites[statusId], ImmutableMap({
like: ImmutableMap({
accounts,
lastUpdated,
isUnread,
status: statusId,
})
}))
}
}
}
if (Object.keys(reposts).length > 0) {
for (const statusId in reposts) {
if (reposts.hasOwnProperty(statusId)) {
const repostArr = reposts[statusId]
const accounts = repostArr.map((l) => l.account)
const lastUpdated = repostArr[0]['created_at']
const isUnread = parseInt(repostArr[0]['id']) > lastReadId
sortedItems = sortedItems.set(indexesForStatusesForReposts[statusId], ImmutableMap({
repost: ImmutableMap({
accounts,
lastUpdated,
isUnread,
status: statusId,
})
}))
}
}
}
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}
})
if (sortedItems.size > 0) finalSortedItems = finalSortedItems.concat(sortedItems)
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})
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return state.set('sortedItems', finalSortedItems)
}
const normalizeNotification = (state, notification) => {
const top = state.get('top')
if (!top) {
state = state.update('unread', (unread) => unread + 1)
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}
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state = state.update('items', (list) => {
if (top && list.size > 40) list = list.take(20)
return list.unshift(notificationToMap(notification))
})
return makeSortedNotifications(state)
}
const expandNormalizedNotifications = (state, notifications, next) => {
let items = ImmutableList()
notifications.forEach((n, i) => {
const noti = notificationToMap(n)
if (!!noti) items = items.set(items.size, noti)
})
state = state.withMutations((mutable) => {
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if (!items.isEmpty()) {
mutable.update('items', (list) => {
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const lastIndex = 1 + list.findLastIndex(
item => item !== null && (compareId(item.get('id'), items.last().get('id')) > 0 || item.get('id') === items.last().get('id'))
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)
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const firstIndex = 1 + list.take(lastIndex).findLastIndex(
item => item !== null && compareId(item.get('id'), items.first().get('id')) > 0
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)
return list.take(firstIndex).concat(items, list.skip(lastIndex))
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})
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}
if (!next) mutable.set('hasMore', false)
mutable.set('isLoading', false)
})
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return makeSortedNotifications(state)
}
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const updateTop = (state, top) => {
return state.withMutations((mutable) => {
if (top) mutable.set('unread', 0)
mutable.set('top', top)
})
}
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const filterNotifications = (state, relationship) => {
const filterer = (list) => list.filterNot((item) => !!item && item.get('account') === relationship.id)
state = state.update('items', filterer)
return makeSortedNotifications(state)
}
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const deleteByStatus = (state, statusId) => {
const filterer = (list) => list.filterNot((item) => !!item && item.get('status') === statusId)
state = state.update('items', filterer)
return makeSortedNotifications(state)
}
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const updateNotificationsQueue = (state, notification, intlMessages, intlLocale) => {
const queuedNotifications = state.getIn(['queuedNotifications'], ImmutableList());
const listedNotifications = state.getIn(['items'], ImmutableList());
const totalQueuedNotificationsCount = state.getIn(['totalQueuedNotificationsCount'], 0);
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const unread = state.getIn(['unread'], 0)
let alreadyExists = queuedNotifications.find((existingQueuedNotification) => existingQueuedNotification.id === notification.id);
if (!alreadyExists) {
alreadyExists = listedNotifications.find((existingListedNotification) => existingListedNotification.get('id') === notification.id);
}
if (alreadyExists) {
return state;
}
let newQueuedNotifications = queuedNotifications;
return state.withMutations(mutable => {
if (totalQueuedNotificationsCount <= MAX_QUEUED_NOTIFICATIONS) {
mutable.set('queuedNotifications', newQueuedNotifications.push({
notification,
intlMessages,
intlLocale,
}));
}
mutable.set('totalQueuedNotificationsCount', totalQueuedNotificationsCount + 1);
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mutable.set('unread', unread + 1);
});
};
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export default function notifications(state = initialState, action) {
switch(action.type) {
case NOTIFICATIONS_INITIALIZE:
return state.withMutations((mutable) => {
mutable.set('unread', unreadCount)
mutable.set('lastReadId', lastReadNotificationId)
})
case NOTIFICATIONS_MARK_READ:
return state.set('lastReadId', action.lastReadId);
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case NOTIFICATIONS_EXPAND_REQUEST:
return state.set('isLoading', true);
case NOTIFICATIONS_EXPAND_FAIL:
return state.set('isLoading', false);
case NOTIFICATIONS_FILTER_SET:
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return state.withMutations(mutable => {
mutable.set('items', ImmutableList()).set('hasMore', true)
mutable.setIn(['filter', action.path], action.value)
})
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case NOTIFICATIONS_SCROLL_TOP:
return updateTop(state, action.top);
case NOTIFICATIONS_UPDATE:
return normalizeNotification(state, action.notification);
case NOTIFICATIONS_UPDATE_QUEUE:
return updateNotificationsQueue(state, action.notification, action.intlMessages, action.intlLocale);
case NOTIFICATIONS_DEQUEUE:
return state.withMutations(mutable => {
mutable.set('queuedNotifications', ImmutableList())
mutable.set('totalQueuedNotificationsCount', 0)
});
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case NOTIFICATIONS_EXPAND_SUCCESS:
return expandNormalizedNotifications(state, action.notifications, action.next);
case ACCOUNT_BLOCK_SUCCESS:
return filterNotifications(state, action.relationship);
case ACCOUNT_MUTE_SUCCESS:
return action.relationship.muting_notifications ? filterNotifications(state, action.relationship) : state;
case NOTIFICATIONS_CLEAR:
return state.set('items', ImmutableList()).set('hasMore', false);
case TIMELINE_DELETE:
return deleteByStatus(state, action.id);
case TIMELINE_DISCONNECT:
return action.timeline === 'home' ?
state.update('items', items => items.first() ? items.unshift(null) : items) :
state;
default:
return state;
}
};