410 lines
14 KiB
JavaScript
410 lines
14 KiB
JavaScript
import _ from 'lodash'
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import { WSConnectionStatus } from '../../services/api/api.service.js'
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import { mapGetters, mapState } from 'vuex'
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import ChatMessage from '../chat_message/chat_message.vue'
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import PostStatusForm from '../post_status_form/post_status_form.vue'
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import ChatTitle from '../chat_title/chat_title.vue'
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import chatService from '../../services/chat_service/chat_service.js'
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import { promiseInterval } from '../../services/promise_interval/promise_interval.js'
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import { getScrollPosition, getNewTopPosition, isBottomedOut, scrollableContainerHeight, isScrollable } from './chat_layout_utils.js'
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import { library } from '@fortawesome/fontawesome-svg-core'
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import {
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faChevronDown,
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faChevronLeft
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} from '@fortawesome/free-solid-svg-icons'
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import { buildFakeMessage } from '../../services/chat_utils/chat_utils.js'
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library.add(
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faChevronDown,
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faChevronLeft
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)
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const BOTTOMED_OUT_OFFSET = 10
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const JUMP_TO_BOTTOM_BUTTON_VISIBILITY_OFFSET = 150
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const SAFE_RESIZE_TIME_OFFSET = 100
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const MARK_AS_READ_DELAY = 1500
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const MAX_RETRIES = 10
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const Chat = {
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components: {
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ChatMessage,
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ChatTitle,
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PostStatusForm
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},
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data () {
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return {
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jumpToBottomButtonVisible: false,
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hoveredMessageChainId: undefined,
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lastScrollPosition: {},
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scrollableContainerHeight: '100%',
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errorLoadingChat: false,
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messageRetriers: {}
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}
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},
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created () {
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this.startFetching()
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window.addEventListener('resize', this.handleLayoutChange)
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},
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mounted () {
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window.addEventListener('scroll', this.handleScroll)
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if (typeof document.hidden !== 'undefined') {
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document.addEventListener('visibilitychange', this.handleVisibilityChange, false)
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}
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this.$nextTick(() => {
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this.updateScrollableContainerHeight()
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this.handleResize()
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})
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this.setChatLayout()
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},
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unmounted () {
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window.removeEventListener('scroll', this.handleScroll)
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window.removeEventListener('resize', this.handleLayoutChange)
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this.unsetChatLayout()
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if (typeof document.hidden !== 'undefined') document.removeEventListener('visibilitychange', this.handleVisibilityChange, false)
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this.$store.dispatch('clearCurrentChat')
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},
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computed: {
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recipient () {
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return this.currentChat && this.currentChat.account
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},
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recipientId () {
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return this.$route.params.recipient_id
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},
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formPlaceholder () {
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if (this.recipient) {
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return this.$t('chats.message_user', { nickname: this.recipient.screen_name_ui })
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} else {
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return ''
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}
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},
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chatViewItems () {
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return chatService.getView(this.currentChatMessageService)
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},
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newMessageCount () {
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return this.currentChatMessageService && this.currentChatMessageService.newMessageCount
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},
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streamingEnabled () {
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return this.mergedConfig.useStreamingApi && this.mastoUserSocketStatus === WSConnectionStatus.JOINED
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},
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...mapGetters([
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'currentChat',
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'currentChatMessageService',
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'findOpenedChatByRecipientId',
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'mergedConfig'
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]),
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...mapState({
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backendInteractor: state => state.api.backendInteractor,
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mastoUserSocketStatus: state => state.api.mastoUserSocketStatus,
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mobileLayout: state => state.interface.mobileLayout,
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layoutHeight: state => state.interface.layoutHeight,
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currentUser: state => state.users.currentUser
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})
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},
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watch: {
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chatViewItems () {
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// We don't want to scroll to the bottom on a new message when the user is viewing older messages.
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// Therefore we need to know whether the scroll position was at the bottom before the DOM update.
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const bottomedOutBeforeUpdate = this.bottomedOut(BOTTOMED_OUT_OFFSET)
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this.$nextTick(() => {
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if (bottomedOutBeforeUpdate) {
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this.scrollDown()
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}
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})
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},
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'$route': function () {
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this.startFetching()
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},
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layoutHeight () {
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this.handleResize({ expand: true })
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},
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mastoUserSocketStatus (newValue) {
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if (newValue === WSConnectionStatus.JOINED) {
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this.fetchChat({ isFirstFetch: true })
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}
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}
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},
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methods: {
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// Used to animate the avatar near the first message of the message chain when any message belonging to the chain is hovered
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onMessageHover ({ isHovered, messageChainId }) {
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this.hoveredMessageChainId = isHovered ? messageChainId : undefined
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},
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onFilesDropped () {
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this.$nextTick(() => {
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this.handleResize()
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this.updateScrollableContainerHeight()
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})
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},
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handleVisibilityChange () {
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this.$nextTick(() => {
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if (!document.hidden && this.bottomedOut(BOTTOMED_OUT_OFFSET)) {
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this.scrollDown({ forceRead: true })
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}
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})
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},
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setChatLayout () {
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// This is a hacky way to adjust the global layout to the mobile chat (without modifying the rest of the app).
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// This layout prevents empty spaces from being visible at the bottom
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// of the chat on iOS Safari (`safe-area-inset`) when
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// - the on-screen keyboard appears and the user starts typing
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// - the user selects the text inside the input area
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// - the user selects and deletes the text that is multiple lines long
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// TODO: unify the chat layout with the global layout.
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let html = document.querySelector('html')
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if (html) {
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html.classList.add('chat-layout')
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}
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this.$nextTick(() => {
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this.updateScrollableContainerHeight()
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})
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},
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unsetChatLayout () {
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let html = document.querySelector('html')
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if (html) {
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html.classList.remove('chat-layout')
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}
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},
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handleLayoutChange () {
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this.$nextTick(() => {
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this.updateScrollableContainerHeight()
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this.scrollDown()
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})
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},
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// Ensures the proper position of the posting form in the mobile layout (the mobile browser panel does not overlap or hide it)
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updateScrollableContainerHeight () {
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const header = this.$refs.header
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const footer = this.$refs.footer
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const inner = this.mobileLayout ? window.document.body : this.$refs.inner
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this.scrollableContainerHeight = scrollableContainerHeight(inner, header, footer) + 'px'
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},
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// Preserves the scroll position when OSK appears or the posting form changes its height.
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handleResize (opts = {}) {
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const { expand = false, delayed = false } = opts
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if (delayed) {
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setTimeout(() => {
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this.handleResize({ ...opts, delayed: false })
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}, SAFE_RESIZE_TIME_OFFSET)
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return
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}
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this.$nextTick(() => {
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this.updateScrollableContainerHeight()
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const { offsetHeight = undefined } = this.lastScrollPosition
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this.lastScrollPosition = getScrollPosition(this.$refs.scrollable)
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const diff = this.lastScrollPosition.offsetHeight - offsetHeight
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if (diff < 0 || (!this.bottomedOut() && expand)) {
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this.$nextTick(() => {
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this.updateScrollableContainerHeight()
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this.$refs.scrollable.scrollTo({
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top: this.$refs.scrollable.scrollTop - diff,
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left: 0
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})
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})
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}
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})
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},
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scrollDown (options = {}) {
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const { behavior = 'auto', forceRead = false } = options
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const scrollable = this.$refs.scrollable
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if (!scrollable) { return }
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this.$nextTick(() => {
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scrollable.scrollTo({ top: scrollable.scrollHeight, left: 0, behavior })
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})
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if (forceRead) {
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this.readChat()
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}
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},
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readChat () {
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if (!(this.currentChatMessageService && this.currentChatMessageService.maxId)) { return }
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if (document.hidden) { return }
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const lastReadId = this.currentChatMessageService.maxId
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this.$store.dispatch('readChat', {
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id: this.currentChat.id,
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lastReadId
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})
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},
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bottomedOut (offset) {
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return isBottomedOut(this.$refs.scrollable, offset)
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},
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reachedTop () {
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const scrollable = this.$refs.scrollable
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return scrollable && scrollable.scrollTop <= 0
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},
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cullOlderCheck () {
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window.setTimeout(() => {
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if (this.bottomedOut(JUMP_TO_BOTTOM_BUTTON_VISIBILITY_OFFSET)) {
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this.$store.dispatch('cullOlderMessages', this.currentChatMessageService.chatId)
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}
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}, 5000)
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},
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handleScroll: _.throttle(function () {
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if (!this.currentChat) { return }
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if (this.reachedTop()) {
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this.fetchChat({ maxId: this.currentChatMessageService.minId })
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} else if (this.bottomedOut(JUMP_TO_BOTTOM_BUTTON_VISIBILITY_OFFSET)) {
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this.jumpToBottomButtonVisible = false
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this.cullOlderCheck()
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if (this.newMessageCount > 0) {
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// Use a delay before marking as read to prevent situation where new messages
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// arrive just as you're leaving the view and messages that you didn't actually
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// get to see get marked as read.
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window.setTimeout(() => {
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// Don't mark as read if the element doesn't exist, user has left chat view
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if (this.$el) this.readChat()
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}, MARK_AS_READ_DELAY)
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}
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} else {
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this.jumpToBottomButtonVisible = true
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}
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}, 200),
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handleScrollUp (positionBeforeLoading) {
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const positionAfterLoading = getScrollPosition(this.$refs.scrollable)
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this.$refs.scrollable.scrollTo({
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top: getNewTopPosition(positionBeforeLoading, positionAfterLoading),
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left: 0
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})
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},
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fetchChat ({ isFirstFetch = false, fetchLatest = false, maxId }) {
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const chatMessageService = this.currentChatMessageService
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if (!chatMessageService) { return }
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if (fetchLatest && this.streamingEnabled) { return }
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const chatId = chatMessageService.chatId
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const fetchOlderMessages = !!maxId
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const sinceId = fetchLatest && chatMessageService.maxId
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return this.backendInteractor.chatMessages({ id: chatId, maxId, sinceId })
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.then((messages) => {
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// Clear the current chat in case we're recovering from a ws connection loss.
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if (isFirstFetch) {
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chatService.clear(chatMessageService)
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}
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const positionBeforeUpdate = getScrollPosition(this.$refs.scrollable)
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this.$store.dispatch('addChatMessages', { chatId, messages }).then(() => {
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this.$nextTick(() => {
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if (fetchOlderMessages) {
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this.handleScrollUp(positionBeforeUpdate)
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}
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if (isFirstFetch) {
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this.updateScrollableContainerHeight()
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}
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// In vertical screens, the first batch of fetched messages may not always take the
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// full height of the scrollable container.
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// If this is the case, we want to fetch the messages until the scrollable container
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// is fully populated so that the user has the ability to scroll up and load the history.
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if (!isScrollable(this.$refs.scrollable) && messages.length > 0) {
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this.fetchChat({ maxId: this.currentChatMessageService.minId })
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}
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})
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})
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})
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},
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async startFetching () {
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let chat = this.findOpenedChatByRecipientId(this.recipientId)
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if (!chat) {
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try {
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chat = await this.backendInteractor.getOrCreateChat({ accountId: this.recipientId })
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} catch (e) {
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console.error('Error creating or getting a chat', e)
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this.errorLoadingChat = true
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}
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}
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if (chat) {
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this.$nextTick(() => {
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this.scrollDown({ forceRead: true })
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})
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this.$store.dispatch('addOpenedChat', { chat })
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this.doStartFetching()
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}
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},
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doStartFetching () {
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this.$store.dispatch('startFetchingCurrentChat', {
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fetcher: () => promiseInterval(() => this.fetchChat({ fetchLatest: true }), 5000)
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})
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this.fetchChat({ isFirstFetch: true })
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},
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handleAttachmentPosting () {
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this.$nextTick(() => {
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this.handleResize()
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// When the posting form size changes because of a media attachment, we need an extra resize
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// to account for the potential delay in the DOM update.
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setTimeout(() => {
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this.updateScrollableContainerHeight()
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}, SAFE_RESIZE_TIME_OFFSET)
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this.scrollDown({ forceRead: true })
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})
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},
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sendMessage ({ status, media, idempotencyKey }) {
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const params = {
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id: this.currentChat.id,
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content: status,
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idempotencyKey
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}
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if (media[0]) {
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params.mediaId = media[0].id
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}
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const fakeMessage = buildFakeMessage({
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attachments: media,
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chatId: this.currentChat.id,
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content: status,
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userId: this.currentUser.id,
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idempotencyKey
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})
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this.$store.dispatch('addChatMessages', {
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chatId: this.currentChat.id,
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messages: [fakeMessage]
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}).then(() => {
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this.handleAttachmentPosting()
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})
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return this.doSendMessage({ params, fakeMessage, retriesLeft: MAX_RETRIES })
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},
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doSendMessage ({ params, fakeMessage, retriesLeft = MAX_RETRIES }) {
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if (retriesLeft <= 0) return
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this.backendInteractor.sendChatMessage(params)
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.then(data => {
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this.$store.dispatch('addChatMessages', {
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chatId: this.currentChat.id,
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updateMaxId: false,
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messages: [{ ...data, fakeId: fakeMessage.id }]
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})
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return data
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})
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.catch(error => {
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console.error('Error sending message', error)
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this.$store.dispatch('handleMessageError', {
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chatId: this.currentChat.id,
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fakeId: fakeMessage.id,
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isRetry: retriesLeft !== MAX_RETRIES
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})
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if ((error.statusCode >= 500 && error.statusCode < 600) || error.message === 'Failed to fetch') {
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this.messageRetriers[fakeMessage.id] = setTimeout(() => {
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this.doSendMessage({ params, fakeMessage, retriesLeft: retriesLeft - 1 })
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}, 1000 * (2 ** (MAX_RETRIES - retriesLeft)))
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}
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return {}
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})
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return Promise.resolve(fakeMessage)
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},
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goBack () {
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this.$router.push({ name: 'chats', params: { username: this.currentUser.screen_name } })
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}
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}
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}
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export default Chat
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