pinafore/routes/_components/Timeline.html

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<:Window bind:online />
<div class="timeline" role="feed" aria-label="{{label}}">
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<VirtualList component="{{StatusListItem}}"
:makeProps
items="{{$statusIds}}"
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on:scrollToBottom="onScrollToBottom()"
shown="{{$initialized}}"
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footerComponent="{{LoadingFooter}}"
showFooter="{{$initialized && $runningUpdate}}"
realm="{{$currentInstance + '/' + timeline}}"
on:initializedVisibleItems="initialize()"
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/>
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</div>
<style>
.timeline {
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min-height: 60vh;
}
</style>
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<script>
import { store } from '../_utils/store'
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import { getTimeline } from '../_utils/mastodon/timelines'
import { getInstanceInfo } from '../_utils/mastodon/instance'
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import StatusListItem from './StatusListItem.html'
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import LoadingFooter from './LoadingFooter.html'
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import VirtualList from './virtualList/VirtualList.html'
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import { splice, push } from 'svelte-extras'
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import { mergeStatuses } from '../_utils/statuses'
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import { mark, stop } from '../_utils/marks'
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import { timelines } from '../_static/timelines'
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import { toast } from '../_utils/toast'
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import { database } from '../_utils/database/database'
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import { StatusStream } from '../_utils/mastodon/StatusStream'
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const FETCH_LIMIT = 20
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export default {
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async oncreate() {
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let timeline = this.get('timeline')
let instanceName = this.store.get('currentInstance')
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let accessToken = this.store.get('accessToken')
if (!this.store.get('statusIds').length) {
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this.addStatuses(await this.fetchStatusesAndPossiblyFallBack())
}
/* no await */ getInstanceInfo(instanceName).then(instanceInfo => database.setInstanceInfo(instanceName, instanceInfo))
let instanceInfo = await database.getInstanceInfo(instanceName)
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this._statusStream = new StatusStream(instanceInfo.urls.streaming_api, accessToken, timeline, {
onMessage(message) {
console.log('message', message)
}
})
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},
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ondestroy() {
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if (this._statusStream) {
this._statusStream.close()
}
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},
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data: () => ({
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StatusListItem: StatusListItem,
LoadingFooter: LoadingFooter
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}),
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computed: {
makeProps: ($currentInstance) => (statusId) => database.getStatus($currentInstance, statusId),
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label: (timeline, $currentInstance) => {
if (timelines[timeline]) {
`${timelines[timeline].label} timeline for ${$currentInstance}`
} else if (timeline.startsWith('tag/')) {
let tag = timeline.split('/').slice(-1)[0]
return `#${tag} timeline for ${$currentInstance}`
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} else if (timeline.startsWith('account/')) {
let account = timeline.split('/').slice(-1)[0]
return `Account #${account} on ${$currentInstance}`
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}
}
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},
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store: () => store,
components: {
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VirtualList
},
methods: {
splice: splice,
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push: push,
initialize() {
if (this.store.get('initialized') || !this.store.get('statusIds') || !this.store.get('statusIds').length) {
return
}
let instanceName = this.store.get('currentInstance')
let timeline = this.get('timeline')
requestAnimationFrame(() => {
requestAnimationFrame(() => {
this.store.setForTimeline(instanceName, timeline, {initialized: true})
})
})
},
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async onScrollToBottom() {
if (!this.store.get('initialized')) {
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return
}
if (this.store.get('runningUpdate')) {
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return
}
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mark('onScrollToBottom')
let timeline = this.get('timeline')
let instanceName = this.store.get('currentInstance')
this.store.setForTimeline(instanceName, timeline, { runningUpdate: true })
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let newStatuses = await this.fetchStatusesAndPossiblyFallBack()
this.store.setForTimeline(instanceName, timeline, { runningUpdate: false })
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this.addStatuses(newStatuses)
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stop('onScrollToBottom')
},
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addStatuses(newStatuses) {
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console.log('addStatuses()')
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let instanceName = this.store.get('currentInstance')
let timeline = this.get('timeline')
let statusIds = this.store.get('statusIds')
if (!statusIds) {
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return
}
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/* no await */ database.insertStatuses(instanceName, timeline, newStatuses)
let newStatusIds = newStatuses.map(status => status.id)
let merged = mergeStatuses(statusIds, newStatusIds)
this.store.setForTimeline(instanceName, timeline, { statusIds: merged })
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},
async fetchStatusesAndPossiblyFallBack() {
let online = this.get('online')
let instanceName = this.store.get('currentInstance')
let instanceData = this.store.get('currentInstanceData')
let timeline = this.get('timeline')
let lastStatusId = this.store.get('lastStatusId')
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let statuses
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if (!online) {
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statuses = await database.getTimeline(instanceName, timeline, lastStatusId, FETCH_LIMIT)
} else {
try {
statuses = await getTimeline(instanceName, instanceData.access_token, timeline, lastStatusId, FETCH_LIMIT)
/* no await */ database.insertStatuses(instanceName, timeline, statuses)
} catch (e) {
console.error(e)
toast.say('Internet request failed. Showing offline content.')
statuses = await database.getTimeline(instanceName, timeline, lastStatusId, FETCH_LIMIT)
}
}
return statuses
}
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}
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}
</script>