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