pinafore/routes/_actions/timeline.js
2018-03-11 12:11:06 -07:00

138 lines
5.1 KiB
JavaScript

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'
import { byItemIds } from '../_utils/sorting'
import isEqual from 'lodash/isEqual'
const FETCH_LIMIT = 20
async function fetchTimelineItems (instanceName, accessToken, timelineName, lastTimelineItemId, online) {
mark('fetchTimelineItems')
let items
let stale = false
if (!online) {
items = await database.getTimeline(instanceName, timelineName, lastTimelineItemId, FETCH_LIMIT)
stale = true
} 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)
stale = true
}
}
stop('fetchTimelineItems')
return { items, stale }
}
async function addTimelineItems (instanceName, timelineName, items, stale) {
console.log('addTimelineItems, length:', items.length)
mark('addTimelineItems')
let newIds = items.map(item => item.id)
addTimelineItemIds(instanceName, timelineName, newIds, stale)
stop('addTimelineItems')
}
export async function addTimelineItemIds (instanceName, timelineName, newIds, newStale) {
let oldIds = store.getForTimeline(instanceName, timelineName, 'timelineItemIds') || []
let oldStale = store.getForTimeline(instanceName, timelineName, 'timelineItemIdsAreStale')
let mergedIds = mergeArrays(oldIds, newIds)
if (!isEqual(oldIds, mergedIds)) {
store.setForTimeline(instanceName, timelineName, {timelineItemIds: mergedIds})
}
if (oldStale !== newStale) {
store.setForTimeline(instanceName, timelineName, {timelineItemIdsAreStale: newStale})
}
}
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 { items, stale } = await fetchTimelineItems(instanceName, accessToken, timelineName, lastTimelineItemId, online)
addTimelineItems(instanceName, timelineName, items, stale)
stop('fetchTimelineItemsAndPossiblyFallBack')
}
export function initializeTimeline () {
mark('initializeTimeline')
let instanceName = store.get('currentInstance')
let timeline = store.get('currentTimeline')
requestAnimationFrame(() => {
requestAnimationFrame(() => {
console.log('initialized')
store.setForTimeline(instanceName, timeline, {initialized: true})
})
})
stop('initializeTimeline')
}
export async function setupTimeline () {
mark('setupTimeline')
// If we don't have any item ids, or if the current item ids are stale
// (i.e. via offline mode), then we need to re-fetch
// Also do this if it's a thread, because threads change pretty frequently and
// we don't have a good way to update them.
let timelineItemIds = store.get('timelineItemIds')
let timelineItemIdsAreStale = store.get('timelineItemIdsAreStale')
let currentTimeline = store.get('currentTimeline')
if (!timelineItemIds ||
timelineItemIdsAreStale ||
currentTimeline.startsWith('status/')) {
await fetchTimelineItemsAndPossiblyFallBack()
}
stop('setupTimeline')
}
export async function fetchTimelineItemsOnScrollToBottom (instanceName, timelineName) {
store.setForTimeline(instanceName, timelineName, { runningUpdate: true })
await fetchTimelineItemsAndPossiblyFallBack()
store.setForTimeline(instanceName, timelineName, { runningUpdate: false })
}
export async function showMoreItemsForTimeline (instanceName, timelineName) {
mark('showMoreItemsForTimeline')
let itemIdsToAdd = store.getForTimeline(instanceName, timelineName, 'itemIdsToAdd')
itemIdsToAdd = itemIdsToAdd.sort(byItemIds).reverse()
addTimelineItemIds(instanceName, timelineName, itemIdsToAdd, false)
store.setForTimeline(instanceName, timelineName, {
itemIdsToAdd: [],
shouldShowHeader: false,
showHeader: false
})
stop('showMoreItemsForTimeline')
}
export async function showMoreItemsForCurrentTimeline () {
return showMoreItemsForTimeline(
store.get('currentInstance'),
store.get('currentTimeline')
)
}
export async function showMoreItemsForThread (instanceName, timelineName) {
mark('showMoreItemsForThread')
let itemIdsToAdd = store.getForTimeline(instanceName, timelineName, 'itemIdsToAdd')
let timelineItemIds = store.getForTimeline(instanceName, timelineName, 'timelineItemIds')
// TODO: update database and do the thread merge correctly
timelineItemIds = timelineItemIds.concat(itemIdsToAdd)
store.setForTimeline(instanceName, timelineName, {
itemIdsToAdd: [],
timelineItemIds: timelineItemIds
})
stop('showMoreItemsForThread')
}