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announcements.js
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announcements.js
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const FETCH_ANNOUNCEMENT_INTERVAL_MS = 1000 * 60 * 5
export const defaultState = {
announcements: [],
supportsAnnouncements: true,
fetchAnnouncementsTimer: undefined
}
export const mutations = {
setAnnouncements (state, announcements) {
state.announcements = announcements
},
setAnnouncementRead (state, { id, read }) {
const index = state.announcements.findIndex(a => a.id === id)
if (index < 0) {
return
}
state.announcements[index].read = read
},
setFetchAnnouncementsTimer (state, timer) {
state.fetchAnnouncementsTimer = timer
},
setSupportsAnnouncements (state, supportsAnnouncements) {
state.supportsAnnouncements = supportsAnnouncements
}
}
export const getters = {
unreadAnnouncementCount (state, _getters, rootState) {
if (!rootState.users.currentUser) {
return 0
}
const unread = state.announcements.filter(announcement => !(announcement.inactive || announcement.read))
return unread.length
}
}
const announcements = {
state: defaultState,
mutations,
getters,
actions: {
fetchAnnouncements (store) {
if (!store.state.supportsAnnouncements) {
return Promise.resolve()
}
const currentUser = store.rootState.users.currentUser
const isAdmin = currentUser && currentUser.privileges.includes('announcements_manage_announcements')
const getAnnouncements = async () => {
if (!isAdmin) {
return store.rootState.api.backendInteractor.fetchAnnouncements()
}
const all = await store.rootState.api.backendInteractor.adminFetchAnnouncements()
const visible = await store.rootState.api.backendInteractor.fetchAnnouncements()
const visibleObject = visible.reduce((a, c) => {
a[c.id] = c
return a
}, {})
const getWithinVisible = announcement => visibleObject[announcement.id]
all.forEach(announcement => {
const visibleAnnouncement = getWithinVisible(announcement)
if (!visibleAnnouncement) {
announcement.inactive = true
} else {
announcement.read = visibleAnnouncement.read
}
})
return all
}
return getAnnouncements()
.then(announcements => {
store.commit('setAnnouncements', announcements)
})
.catch(error => {
// If and only if backend does not support announcements, it would return 404.
// In this case, silently ignores it.
if (error && error.statusCode === 404) {
store.commit('setSupportsAnnouncements', false)
} else {
throw error
}
})
},
markAnnouncementAsRead (store, id) {
return store.rootState.api.backendInteractor.dismissAnnouncement({ id })
.then(() => {
store.commit('setAnnouncementRead', { id, read: true })
})
},
startFetchingAnnouncements (store) {
if (store.state.fetchAnnouncementsTimer) {
return
}
const interval = setInterval(() => store.dispatch('fetchAnnouncements'), FETCH_ANNOUNCEMENT_INTERVAL_MS)
store.commit('setFetchAnnouncementsTimer', interval)
return store.dispatch('fetchAnnouncements')
},
stopFetchingAnnouncements (store) {
const interval = store.state.fetchAnnouncementsTimer
store.commit('setFetchAnnouncementsTimer', undefined)
clearInterval(interval)
},
postAnnouncement (store, { content, startsAt, endsAt, allDay }) {
return store.rootState.api.backendInteractor.postAnnouncement({ content, startsAt, endsAt, allDay })
.then(() => {
return store.dispatch('fetchAnnouncements')
})
},
editAnnouncement (store, { id, content, startsAt, endsAt, allDay }) {
return store.rootState.api.backendInteractor.editAnnouncement({ id, content, startsAt, endsAt, allDay })
.then(() => {
return store.dispatch('fetchAnnouncements')
})
},
deleteAnnouncement (store, id) {
return store.rootState.api.backendInteractor.deleteAnnouncement({ id })
.then(() => {
return store.dispatch('fetchAnnouncements')
})
}
}
}
export default announcements

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