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import apiService from '../api/api.service.js'
const update = ({store, notifications, older}) => {
store.dispatch('setNotificationsError', { value: false })
store.dispatch('addNewNotifications', { notifications, older })
}
const fetchAndUpdate = ({store, credentials, older = false}) => {
const args = { credentials }
const rootState = store.rootState || store.state
const timelineData = rootState.statuses.notifications
if (older) {
if (timelineData.minId !== Number.POSITIVE_INFINITY) {
args['until'] = timelineData.minId
}
} else {
// load unread notifications repeadedly to provide consistency between browser tabs
const notifications = timelineData.data
const unread = notifications.filter(n => !n.seen).map(n => n.id)
if (!unread.length) {
args['since'] = timelineData.maxId
} else {
args['since'] = Math.min(...unread) - 1
if (timelineData.maxId !== Math.max(...unread)) {
args['until'] = Math.max(...unread, args['since'] + 20)
}
}
}
args['timeline'] = 'notifications'
return apiService.fetchTimeline(args)
.then((notifications) => {
update({store, notifications, older})
return notifications
}, () => store.dispatch('setNotificationsError', { value: true }))
.catch(() => store.dispatch('setNotificationsError', { value: true }))
}
const startFetching = ({credentials, store}) => {
fetchAndUpdate({ credentials, store })
const boundFetchAndUpdate = () => fetchAndUpdate({ credentials, store })
// Initially there's set flag to silence all desktop notifications so
// that there won't spam of them when user just opened up the FE we
// reset that flag after a while to show new notifications once again.
setTimeout(() => store.dispatch('setNotificationsSilence', false), 10000)
return setInterval(boundFetchAndUpdate, 10000)
}
const notificationsFetcher = {
fetchAndUpdate,
startFetching
}
export default notificationsFetcher
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