40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
import debounce from 'lodash-es/debounce'
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import { toast } from '../../_utils/toast'
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const OFFLINE_DELAY = 5000
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const NOTIFY_OFFLINE_LIMIT = 1
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let notifyCount = 0
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// debounce to avoid notifying for a short connection issue
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const notifyOffline = debounce(() => {
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if (process.browser && !navigator.onLine && ++notifyCount <= NOTIFY_OFFLINE_LIMIT) {
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toast.say('You seem to be offline. You can still read toots while offline.')
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}
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}, OFFLINE_DELAY)
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export function onlineObservers (store) {
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if (!process.browser) {
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return
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}
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let meta = document.getElementById('theThemeColor')
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let oldTheme = meta.content
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store.observe('online', online => {
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document.body.classList.toggle('offline', !online)
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if (online) {
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meta.content = oldTheme
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} else {
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let offlineThemeColor = window.__themeColors.offline
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if (meta.content !== offlineThemeColor) {
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oldTheme = meta.content
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}
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meta.content = offlineThemeColor
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notifyOffline()
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}
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})
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window.addEventListener('offline', () => store.set({ online: false }))
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window.addEventListener('online', () => store.set({ online: true }))
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}
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