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