91 lines
3.2 KiB
JavaScript
91 lines
3.2 KiB
JavaScript
import { updateInstanceInfo, updateVerifyCredentialsForInstance } from '../../_actions/instances'
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import { updateLists } from '../../_actions/lists'
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import { createStream } from '../../_actions/streaming'
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import { updatePushSubscriptionForInstance } from '../../_actions/pushSubscription'
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import { updateCustomEmojiForInstance } from '../../_actions/emoji'
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import { addStatusesOrNotifications } from '../../_actions/addStatusOrNotification'
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import { getTimeline } from '../../_api/timelines'
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import { TIMELINE_BATCH_SIZE } from '../../_static/timelines'
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export function instanceObservers (store) {
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// stream to watch for home timeline updates and notifications
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let currentInstanceStream
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store.observe('currentInstance', async (currentInstance) => {
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if (!process.browser) {
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return
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}
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if (currentInstanceStream) {
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currentInstanceStream.close()
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currentInstanceStream = null
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if (process.env.NODE_ENV !== 'production') {
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window.currentInstanceStream = null
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}
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}
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if (!currentInstance) {
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return
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}
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updateVerifyCredentialsForInstance(currentInstance)
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updateInstanceInfo(currentInstance)
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updateCustomEmojiForInstance(currentInstance)
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updateLists()
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updatePushSubscriptionForInstance(currentInstance)
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await updateInstanceInfo(currentInstance)
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let currentInstanceIsUnchanged = () => {
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let { currentInstance: newCurrentInstance } = store.get()
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return newCurrentInstance === currentInstance
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}
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if (!currentInstanceIsUnchanged()) {
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return
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}
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let { currentInstanceInfo } = store.get()
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if (!currentInstanceInfo) {
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return
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}
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let homeTimelineItemIds = store.getForTimeline(currentInstance,
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'home', 'timelineItemIds')
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let firstHomeTimelineItemId = homeTimelineItemIds && homeTimelineItemIds[0]
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let notificationItemIds = store.getForTimeline(currentInstance,
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'notifications', 'timelineItemIds')
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let firstNotificationTimelineItemId = notificationItemIds && notificationItemIds[0]
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let onOpenStream = async () => {
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if (!currentInstanceIsUnchanged()) {
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return
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}
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// fill in the "streaming gap" – i.e. fetch the most recent 20 items so that there isn't
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// a big gap in the timeline if you haven't looked at it in awhile
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async function fillGap (timelineName, firstTimelineItemId) {
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if (!firstTimelineItemId) {
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return
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}
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let newTimelineItems = await getTimeline(currentInstance, accessToken,
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timelineName, null, firstTimelineItemId, TIMELINE_BATCH_SIZE)
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if (newTimelineItems.length) {
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addStatusesOrNotifications(currentInstance, timelineName, newTimelineItems)
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}
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}
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await Promise.all([
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fillGap('home', firstHomeTimelineItemId),
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fillGap('notifications', firstNotificationTimelineItemId)
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])
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}
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let { accessToken } = store.get()
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let streamingApi = currentInstanceInfo.urls.streaming_api
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currentInstanceStream = createStream(streamingApi,
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currentInstance, accessToken, 'home', onOpenStream)
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if (process.env.NODE_ENV !== 'production') {
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window.currentInstanceStream = currentInstanceStream
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}
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})
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}
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