pinafore/routes/_actions/timeline.js

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import { store } from '../_store/store'
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import { database } from '../_utils/database/database'
import { getTimeline } from '../_utils/mastodon/timelines'
import { toast } from '../_utils/toast'
import { mark, stop } from '../_utils/marks'
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import { mergeArrays } from '../_utils/arrays'
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const FETCH_LIMIT = 20
async function fetchTimelineItems(instanceName, accessToken, timelineName, lastTimelineItemId, online) {
mark('fetchTimelineItems')
let items
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if (!online) {
items = await database.getTimeline(instanceName, timelineName, lastTimelineItemId, FETCH_LIMIT)
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} else {
try {
items = await getTimeline(instanceName, accessToken, timelineName, lastTimelineItemId, FETCH_LIMIT)
/* no await */ database.insertTimelineItems(instanceName, timelineName, items)
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} catch (e) {
console.error(e)
toast.say('Internet request failed. Showing offline content.')
items = await database.getTimeline(instanceName, timelineName, lastTimelineItemId, FETCH_LIMIT)
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}
}
stop('fetchTimelineItems')
return items
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}
async function addTimelineItems(instanceName, timelineName, newItems) {
console.log('addTimelineItems, length:', newItems.length)
mark('addTimelineItems')
let newIds = newItems.map(item => item.id)
let oldIds = store.getForTimeline(instanceName, timelineName, 'timelineItemIds') || []
let merged = mergeArrays(oldIds, newIds)
store.setForTimeline(instanceName, timelineName, { timelineItemIds: merged })
stop('addTimelineItems')
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}
async function fetchTimelineItemsAndPossiblyFallBack() {
mark('fetchTimelineItemsAndPossiblyFallBack')
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let timelineName = store.get('currentTimeline')
let instanceName = store.get('currentInstance')
let accessToken = store.get('accessToken')
let lastTimelineItemId = store.get('lastTimelineItemId')
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let online = store.get('online')
let newItems = await fetchTimelineItems(instanceName, accessToken, timelineName, lastTimelineItemId, online)
addTimelineItems(instanceName, timelineName, newItems)
stop('fetchTimelineItemsAndPossiblyFallBack')
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}
export function initializeTimeline() {
mark('initializeTimeline')
let instanceName = store.get('currentInstance')
let timeline = store.get('currentTimeline')
requestAnimationFrame(() => {
requestAnimationFrame(() => {
store.setForTimeline(instanceName, timeline, {initialized: true})
})
})
stop('initializeTimeline')
}
export async function setupTimeline() {
mark('setupTimeline')
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let timelineName = store.get('currentTimeline')
let instanceName = store.get('currentInstance')
let accessToken = store.get('accessToken')
if (!store.get('timelineItemIds').length) {
await fetchTimelineItemsAndPossiblyFallBack()
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}
stop('setupTimeline')
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}
export async function fetchTimelineItemsOnScrollToBottom() {
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let timelineName = store.get('currentTimeline')
let instanceName = store.get('currentInstance')
store.setForTimeline(instanceName, timelineName, { runningUpdate: true })
await fetchTimelineItemsAndPossiblyFallBack()
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store.setForTimeline(instanceName, timelineName, { runningUpdate: false })
}