statuses.js
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statuses.js
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	import { remove, slice, each, findIndex, find, maxBy, minBy, merge, first, last, isArray, omitBy } from 'lodash'
	import { set } from 'vue'
	import apiService from '../services/api/api.service.js'
	// import parse from '../services/status_parser/status_parser.js'

	const emptyTl = (userId = 0) => ({
	statuses: [],
	statusesObject: {},
	faves: [],
	visibleStatuses: [],
	visibleStatusesObject: {},
	newStatusCount: 0,
	maxId: 0,
	minId: 0,
	minVisibleId: 0,
	loading: false,
	followers: [],
	friends: [],
	userId,
	flushMarker: 0
	})

	const emptyNotifications = () => ({
	desktopNotificationSilence: true,
	maxId: 0,
	minId: Number.POSITIVE_INFINITY,
	data: [],
	idStore: {},
	loading: false,
	error: false
	})

	export const defaultState = () => ({
	allStatuses: [],
	allStatusesObject: {},
	conversationsObject: {},
	maxId: 0,
	notifications: emptyNotifications(),
	favorites: new Set(),
	error: false,
	timelines: {
	mentions: emptyTl(),
	public: emptyTl(),
	user: emptyTl(),
	favorites: emptyTl(),
	media: emptyTl(),
	publicAndExternal: emptyTl(),
	friends: emptyTl(),
	tag: emptyTl(),
	dms: emptyTl()
	}
	})

	export const prepareStatus = (status) => {
	// Set deleted flag
	status.deleted = false

	// To make the array reactive
	status.attachments = status.attachments \|\| []

	return status
	}

	const visibleNotificationTypes = (rootState) => {
	return [
	rootState.config.notificationVisibility.likes && 'like',
	rootState.config.notificationVisibility.mentions && 'mention',
	rootState.config.notificationVisibility.repeats && 'repeat',
	rootState.config.notificationVisibility.follows && 'follow'
	].filter(_ => _)
	}

	const mergeOrAdd = (arr, obj, item) => {
	const oldItem = obj[item.id]

	if (oldItem) {
	// We already have this, so only merge the new info.
	// We ignore null values to avoid overwriting existing properties with missing data
	// we also skip 'user' because that is handled by users module
	merge(oldItem, omitBy(item, (v, k) => v === null \|\| k === 'user'))
	// Reactivity fix.
	oldItem.attachments.splice(oldItem.attachments.length)
	return { item: oldItem, new: false }
	} else {
	// This is a new item, prepare it
	prepareStatus(item)
	arr.push(item)
	set(obj, item.id, item)
	return { item, new: true }
	}
	}

	const sortById = (a, b) => {
	const seqA = Number(a.id)
	const seqB = Number(b.id)
	const isSeqA = !Number.isNaN(seqA)
	const isSeqB = !Number.isNaN(seqB)
	if (isSeqA && isSeqB) {
	return seqA > seqB ? -1 : 1
	} else if (isSeqA && !isSeqB) {
	return 1
	} else if (!isSeqA && isSeqB) {
	return -1
	} else {
	return a.id > b.id ? -1 : 1
	}
	}

	const sortTimeline = (timeline) => {
	timeline.visibleStatuses = timeline.visibleStatuses.sort(sortById)
	timeline.statuses = timeline.statuses.sort(sortById)
	timeline.minVisibleId = (last(timeline.visibleStatuses) \|\| {}).id
	return timeline
	}

	// Add status to the global storages (arrays and objects maintaining statuses) except timelines
	const addStatusToGlobalStorage = (state, data) => {
	const result = mergeOrAdd(state.allStatuses, state.allStatusesObject, data)
	if (result.new) {
	// Add to conversation
	const status = result.item
	const conversationsObject = state.conversationsObject
	const conversationId = status.statusnet_conversation_id
	if (conversationsObject[conversationId]) {
	conversationsObject[conversationId].push(status)
	} else {
	set(conversationsObject, conversationId, [status])
	}
	}
	return result
	}

	// Remove status from the global storages (arrays and objects maintaining statuses) except timelines
	const removeStatusFromGlobalStorage = (state, status) => {
	remove(state.allStatuses, { id: status.id })

	// TODO: Need to remove from allStatusesObject?

	// Remove possible notification
	remove(state.notifications.data, ({ action: { id } }) => id === status.id)

	// Remove from conversation
	const conversationId = status.statusnet_conversation_id
	if (state.conversationsObject[conversationId]) {
	remove(state.conversationsObject[conversationId], { id: status.id })
	}
	}

	const addNewStatuses = (state, { statuses, showImmediately = false, timeline, user = {},
	noIdUpdate = false, userId }) => {
	// Sanity check
	if (!isArray(statuses)) {
	return false
	}

	const allStatuses = state.allStatuses
	const timelineObject = state.timelines[timeline]

	const maxNew = statuses.length > 0 ? maxBy(statuses, 'id').id : 0
	const minNew = statuses.length > 0 ? minBy(statuses, 'id').id : 0
	const newer = timeline && (maxNew > timelineObject.maxId \|\| timelineObject.maxId === 0) && statuses.length > 0
	const older = timeline && (minNew < timelineObject.minId \|\| timelineObject.minId === 0) && statuses.length > 0

	if (!noIdUpdate && newer) {
	timelineObject.maxId = maxNew
	}
	if (!noIdUpdate && older) {
	timelineObject.minId = minNew
	}

	// This makes sure that user timeline won't get data meant for other
	// user. I.e. opening different user profiles makes request which could
	// return data late after user already viewing different user profile
	if ((timeline === 'user' \|\| timeline === 'media') && timelineObject.userId !== userId) {
	return
	}

	const addStatus = (data, showImmediately, addToTimeline = true) => {
	const result = addStatusToGlobalStorage(state, data)
	const status = result.item

	if (result.new) {
	// We are mentioned in a post
	if (status.type === 'status' && find(status.attentions, { id: user.id })) {
	const mentions = state.timelines.mentions

	// Add the mention to the mentions timeline
	if (timelineObject !== mentions) {
	mergeOrAdd(mentions.statuses, mentions.statusesObject, status)
	mentions.newStatusCount += 1

	sortTimeline(mentions)
	}
	}
	if (status.visibility === 'direct') {
	const dms = state.timelines.dms

	mergeOrAdd(dms.statuses, dms.statusesObject, status)
	dms.newStatusCount += 1

	sortTimeline(dms)
	}
	}

	// Decide if we should treat the status as new for this timeline.
	let resultForCurrentTimeline
	// Some statuses should only be added to the global status repository.
	if (timeline && addToTimeline) {
	resultForCurrentTimeline = mergeOrAdd(timelineObject.statuses, timelineObject.statusesObject, status)
	}

	if (timeline && showImmediately) {
	// Add it directly to the visibleStatuses, don't change
	// newStatusCount
	mergeOrAdd(timelineObject.visibleStatuses, timelineObject.visibleStatusesObject, status)
	} else if (timeline && addToTimeline && resultForCurrentTimeline.new) {
	// Just change newStatuscount
	timelineObject.newStatusCount += 1
	}

	return status
	}

	const favoriteStatus = (favorite, counter) => {
	const status = find(allStatuses, { id: favorite.in_reply_to_status_id })
	if (status) {
	// This is our favorite, so the relevant bit.
	if (favorite.user.id === user.id) {
	status.favorited = true
	} else {
	status.fave_num += 1
	}
	}
	return status
	}

	const processors = {
	'status': (status) => {
	addStatus(status, showImmediately)
	},
	'retweet': (status) => {
	// RetweetedStatuses are never shown immediately
	const retweetedStatus = addStatus(status.retweeted_status, false, false)

	let retweet
	// If the retweeted status is already there, don't add the retweet
	// to the timeline.
	if (timeline && find(timelineObject.statuses, (s) => {
	if (s.retweeted_status) {
	return s.id === retweetedStatus.id \|\| s.retweeted_status.id === retweetedStatus.id
	} else {
	return s.id === retweetedStatus.id
	}
	})) {
	// Already have it visible (either as the original or another RT), don't add to timeline, don't show.
	retweet = addStatus(status, false, false)
	} else {
	retweet = addStatus(status, showImmediately)
	}

	retweet.retweeted_status = retweetedStatus
	},
	'favorite': (favorite) => {
	// Only update if this is a new favorite.
	// Ignore our own favorites because we get info about likes as response to like request
	if (!state.favorites.has(favorite.id)) {
	state.favorites.add(favorite.id)
	favoriteStatus(favorite)
	}
	},
	'deletion': (deletion) => {
	const uri = deletion.uri
	const status = find(allStatuses, { uri })
	if (!status) {
	return
	}

	removeStatusFromGlobalStorage(state, status)

	if (timeline) {
	remove(timelineObject.statuses, { uri })
	remove(timelineObject.visibleStatuses, { uri })
	}
	},
	'follow': (follow) => {
	// NOOP, it is known status but we don't do anything about it for now
	},
	'default': (unknown) => {
	console.log('unknown status type')
	console.log(unknown)
	}
	}

	each(statuses, (status) => {
	const type = status.type
	const processor = processors[type] \|\| processors['default']
	processor(status)
	})

	// Keep the visible statuses sorted
	if (timeline) {
	sortTimeline(timelineObject)
	}
	}

	const addNewNotifications = (state, { dispatch, notifications, older, visibleNotificationTypes, rootGetters }) => {
	each(notifications, (notification) => {
	if (notification.type !== 'follow') {
	notification.action = addStatusToGlobalStorage(state, notification.action).item
	notification.status = notification.status && addStatusToGlobalStorage(state, notification.status).item
	}

	// Only add a new notification if we don't have one for the same action
	if (!state.notifications.idStore.hasOwnProperty(notification.id)) {
	state.notifications.maxId = notification.id > state.notifications.maxId
	? notification.id
	: state.notifications.maxId
	state.notifications.minId = notification.id < state.notifications.minId
	? notification.id
	: state.notifications.minId

	state.notifications.data.push(notification)
	state.notifications.idStore[notification.id] = notification

	if ('Notification' in window && window.Notification.permission === 'granted') {
	const notifObj = {}
	const status = notification.status
	const title = notification.from_profile.name
	notifObj.icon = notification.from_profile.profile_image_url
	let i18nString
	switch (notification.type) {
	case 'like':
	i18nString = 'favorited_you'
	break
	case 'repeat':
	i18nString = 'repeated_you'
	break
	case 'follow':
	i18nString = 'followed_you'
	break
	}

	if (i18nString) {
	notifObj.body = rootGetters.i18n.t('notifications.' + i18nString)
	} else {
	notifObj.body = notification.status.text
	}

	// Shows first attached non-nsfw image, if any. Should add configuration for this somehow...
	if (status && status.attachments && status.attachments.length > 0 && !status.nsfw &&
	status.attachments[0].mimetype.startsWith('image/')) {
	notifObj.image = status.attachments[0].url
	}

	if (!notification.seen && !state.notifications.desktopNotificationSilence && visibleNotificationTypes.includes(notification.type)) {
	let notification = new window.Notification(title, notifObj)
	// Chrome is known for not closing notifications automatically
	// according to MDN, anyway.
	setTimeout(notification.close.bind(notification), 5000)
	}
	}
	} else if (notification.seen) {
	state.notifications.idStore[notification.id].seen = true
	}
	})
	}

	const removeStatus = (state, { timeline, userId }) => {
	const timelineObject = state.timelines[timeline]
	if (userId) {
	remove(timelineObject.statuses, { user: { id: userId } })
	remove(timelineObject.visibleStatuses, { user: { id: userId } })
	timelineObject.minVisibleId = timelineObject.visibleStatuses.length > 0 ? last(timelineObject.visibleStatuses).id : 0
	timelineObject.maxId = timelineObject.statuses.length > 0 ? first(timelineObject.statuses).id : 0
	}
	}

	export const mutations = {
	addNewStatuses,
	addNewNotifications,
	removeStatus,
	showNewStatuses (state, { timeline }) {
	const oldTimeline = (state.timelines[timeline])

	oldTimeline.newStatusCount = 0
	oldTimeline.visibleStatuses = slice(oldTimeline.statuses, 0, 50)
	oldTimeline.minVisibleId = last(oldTimeline.visibleStatuses).id
	oldTimeline.minId = oldTimeline.minVisibleId
	oldTimeline.visibleStatusesObject = {}
	each(oldTimeline.visibleStatuses, (status) => { oldTimeline.visibleStatusesObject[status.id] = status })
	},
	resetStatuses (state) {
	const emptyState = defaultState()
	Object.entries(emptyState).forEach(([key, value]) => {
	state[key] = value
	})
	},
	clearTimeline (state, { timeline, excludeUserId = false }) {
	const userId = excludeUserId ? state.timelines[timeline].userId : undefined
	state.timelines[timeline] = emptyTl(userId)
	},
	clearNotifications (state) {
	state.notifications = emptyNotifications()
	},
	setFavorited (state, { status, value }) {
	const newStatus = state.allStatusesObject[status.id]

	if (newStatus.favorited !== value) {
	if (value) {
	newStatus.fave_num++
	} else {
	newStatus.fave_num--
	}
	}

	newStatus.favorited = value
	},
	setFavoritedConfirm (state, { status, user }) {
	const newStatus = state.allStatusesObject[status.id]
	newStatus.favorited = status.favorited
	newStatus.fave_num = status.fave_num
	const index = findIndex(newStatus.favoritedBy, { id: user.id })
	if (index !== -1 && !newStatus.favorited) {
	newStatus.favoritedBy.splice(index, 1)
	} else if (index === -1 && newStatus.favorited) {
	newStatus.favoritedBy.push(user)
	}
	},
	setMutedStatus (state, status) {
	const newStatus = state.allStatusesObject[status.id]
	newStatus.thread_muted = status.thread_muted

	if (newStatus.thread_muted !== undefined) {
	state.conversationsObject[newStatus.statusnet_conversation_id].forEach(status => { status.thread_muted = newStatus.thread_muted })
	}
	},
	setRetweeted (state, { status, value }) {
	const newStatus = state.allStatusesObject[status.id]

	if (newStatus.repeated !== value) {
	if (value) {
	newStatus.repeat_num++
	} else {
	newStatus.repeat_num--
	}
	}

	newStatus.repeated = value
	},
	setRetweetedConfirm (state, { status, user }) {
	const newStatus = state.allStatusesObject[status.id]
	newStatus.repeated = status.repeated
	newStatus.repeat_num = status.repeat_num
	const index = findIndex(newStatus.rebloggedBy, { id: user.id })
	if (index !== -1 && !newStatus.repeated) {
	newStatus.rebloggedBy.splice(index, 1)
	} else if (index === -1 && newStatus.repeated) {
	newStatus.rebloggedBy.push(user)
	}
	},
	setDeleted (state, { status }) {
	const newStatus = state.allStatusesObject[status.id]
	newStatus.deleted = true
	},
	setManyDeleted (state, condition) {
	Object.values(state.allStatusesObject).forEach(status => {
	if (condition(status)) {
	status.deleted = true
	}
	})
	},
	setLoading (state, { timeline, value }) {
	state.timelines[timeline].loading = value
	},
	setNsfw (state, { id, nsfw }) {
	const newStatus = state.allStatusesObject[id]
	newStatus.nsfw = nsfw
	},
	setError (state, { value }) {
	state.error = value
	},
	setNotificationsLoading (state, { value }) {
	state.notifications.loading = value
	},
	setNotificationsError (state, { value }) {
	state.notifications.error = value
	},
	setNotificationsSilence (state, { value }) {
	state.notifications.desktopNotificationSilence = value
	},
	markNotificationsAsSeen (state) {
	each(state.notifications.data, (notification) => {
	notification.seen = true
	})
	},
	queueFlush (state, { timeline, id }) {
	state.timelines[timeline].flushMarker = id
	},
	addRepeats (state, { id, rebloggedByUsers, currentUser }) {
	const newStatus = state.allStatusesObject[id]
	newStatus.rebloggedBy = rebloggedByUsers.filter(_ => _)
	// repeats stats can be incorrect based on polling condition, let's update them using the most recent data
	newStatus.repeat_num = newStatus.rebloggedBy.length
	newStatus.repeated = !!newStatus.rebloggedBy.find(({ id }) => currentUser.id === id)
	},
	addFavs (state, { id, favoritedByUsers, currentUser }) {
	const newStatus = state.allStatusesObject[id]
	newStatus.favoritedBy = favoritedByUsers.filter(_ => _)
	// favorites stats can be incorrect based on polling condition, let's update them using the most recent data
	newStatus.fave_num = newStatus.favoritedBy.length
	newStatus.favorited = !!newStatus.favoritedBy.find(({ id }) => currentUser.id === id)
	},
	updateStatusWithPoll (state, { id, poll }) {
	const status = state.allStatusesObject[id]
	status.poll = poll
	}
	}

	const statuses = {
	state: defaultState(),
	actions: {
	addNewStatuses ({ rootState, commit }, { statuses, showImmediately = false, timeline = false, noIdUpdate = false, userId }) {
	commit('addNewStatuses', { statuses, showImmediately, timeline, noIdUpdate, user: rootState.users.currentUser, userId })
	},
	addNewNotifications ({ rootState, commit, dispatch, rootGetters }, { notifications, older }) {
	commit('addNewNotifications', { visibleNotificationTypes: visibleNotificationTypes(rootState), dispatch, notifications, older, rootGetters })
	},
	setError ({ rootState, commit }, { value }) {
	commit('setError', { value })
	},
	setNotificationsLoading ({ rootState, commit }, { value }) {
	commit('setNotificationsLoading', { value })
	},
	setNotificationsError ({ rootState, commit }, { value }) {
	commit('setNotificationsError', { value })
	},
	setNotificationsSilence ({ rootState, commit }, { value }) {
	commit('setNotificationsSilence', { value })
	},
	fetchStatus ({ rootState, dispatch }, id) {
	rootState.api.backendInteractor.fetchStatus({ id })
	.then((status) => dispatch('addNewStatuses', { statuses: [status] }))
	},
	deleteStatus ({ rootState, commit }, status) {
	commit('setDeleted', { status })
	apiService.deleteStatus({ id: status.id, credentials: rootState.users.currentUser.credentials })
	},
	markStatusesAsDeleted ({ commit }, condition) {
	commit('setManyDeleted', condition)
	},
	favorite ({ rootState, commit }, status) {
	// Optimistic favoriting...
	commit('setFavorited', { status, value: true })
	rootState.api.backendInteractor.favorite({ id: status.id })
	.then(status => commit('setFavoritedConfirm', { status, user: rootState.users.currentUser }))
	},
	unfavorite ({ rootState, commit }, status) {
	// Optimistic unfavoriting...
	commit('setFavorited', { status, value: false })
	rootState.api.backendInteractor.unfavorite({ id: status.id })
	.then(status => commit('setFavoritedConfirm', { status, user: rootState.users.currentUser }))
	},
	fetchPinnedStatuses ({ rootState, dispatch }, userId) {
	rootState.api.backendInteractor.fetchPinnedStatuses({ id: userId })
	.then(statuses => dispatch('addNewStatuses', { statuses, timeline: 'user', userId, showImmediately: true, noIdUpdate: true }))
	},
	pinStatus ({ rootState, dispatch }, statusId) {
	return rootState.api.backendInteractor.pinOwnStatus({ id: statusId })
	.then((status) => dispatch('addNewStatuses', { statuses: [status] }))
	},
	unpinStatus ({ rootState, dispatch }, statusId) {
	rootState.api.backendInteractor.unpinOwnStatus({ id: statusId })
	.then((status) => dispatch('addNewStatuses', { statuses: [status] }))
	},
	muteConversation ({ rootState, commit }, statusId) {
	return rootState.api.backendInteractor.muteConversation({ id: statusId })
	.then((status) => commit('setMutedStatus', status))
	},
	unmuteConversation ({ rootState, commit }, statusId) {
	return rootState.api.backendInteractor.unmuteConversation({ id: statusId })
	.then((status) => commit('setMutedStatus', status))
	},
	retweet ({ rootState, commit }, status) {
	// Optimistic retweeting...
	commit('setRetweeted', { status, value: true })
	rootState.api.backendInteractor.retweet({ id: status.id })
	.then(status => commit('setRetweetedConfirm', { status: status.retweeted_status, user: rootState.users.currentUser }))
	},
	unretweet ({ rootState, commit }, status) {
	// Optimistic unretweeting...
	commit('setRetweeted', { status, value: false })
	rootState.api.backendInteractor.unretweet({ id: status.id })
	.then(status => commit('setRetweetedConfirm', { status, user: rootState.users.currentUser }))
	},
	queueFlush ({ rootState, commit }, { timeline, id }) {
	commit('queueFlush', { timeline, id })
	},
	markNotificationsAsSeen ({ rootState, commit }) {
	commit('markNotificationsAsSeen')
	apiService.markNotificationsAsSeen({
	id: rootState.statuses.notifications.maxId,
	credentials: rootState.users.currentUser.credentials
	})
	},
	fetchFavsAndRepeats ({ rootState, commit }, id) {
	Promise.all([
	rootState.api.backendInteractor.fetchFavoritedByUsers({ id }),
	rootState.api.backendInteractor.fetchRebloggedByUsers({ id })
	]).then(([favoritedByUsers, rebloggedByUsers]) => {
	commit('addFavs', { id, favoritedByUsers, currentUser: rootState.users.currentUser })
	commit('addRepeats', { id, rebloggedByUsers, currentUser: rootState.users.currentUser })
	})
	},
	fetchFavs ({ rootState, commit }, id) {
	rootState.api.backendInteractor.fetchFavoritedByUsers({ id })
	.then(favoritedByUsers => commit('addFavs', { id, favoritedByUsers, currentUser: rootState.users.currentUser }))
	},
	fetchRepeats ({ rootState, commit }, id) {
	rootState.api.backendInteractor.fetchRebloggedByUsers({ id })
	.then(rebloggedByUsers => commit('addRepeats', { id, rebloggedByUsers, currentUser: rootState.users.currentUser }))
	},
	search (store, { q, resolve, limit, offset, following }) {
	return store.rootState.api.backendInteractor.search2({ q, resolve, limit, offset, following })
	.then((data) => {
	store.commit('addNewUsers', data.accounts)
	store.commit('addNewStatuses', { statuses: data.statuses })
	return data
	})
	}
	},
	mutations
	}

	export default statuses

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