@pazznetwork/ngx-chat
Version:
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172 lines • 30.8 kB
JavaScript
import { jid as parseJid, xml } from '@xmpp/client';
import { filter } from 'rxjs/operators';
import { Direction, MessageState } from '../../../../core/message';
import { AbstractXmppPlugin } from './abstract-xmpp-plugin';
import { MessageUuidPlugin } from './message-uuid.plugin';
const STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES = 'ngxchat:contactmessagestates';
const wrapperNodeName = 'entries';
const nodeName = 'contact-message-state';
/**
* Plugin using PubSub to persist message read states.
* Custom not part of the XMPP Specification
* Standardized implementation specification would be https://xmpp.org/extensions/xep-0184.html
*/
export class MessageStatePlugin extends AbstractXmppPlugin {
constructor(publishSubscribePlugin, xmppChatAdapter, chatMessageListRegistry, logService, entityTimePlugin) {
super();
this.publishSubscribePlugin = publishSubscribePlugin;
this.xmppChatAdapter = xmppChatAdapter;
this.chatMessageListRegistry = chatMessageListRegistry;
this.logService = logService;
this.entityTimePlugin = entityTimePlugin;
this.jidToMessageStateDate = new Map();
this.chatMessageListRegistry.openChats$
.pipe(filter(() => xmppChatAdapter.state$.getValue() === 'online'))
.subscribe(contacts => {
contacts.forEach(async (contact) => {
if (contact.mostRecentMessageReceived) {
await this.sendMessageStateNotification(contact.jidBare, contact.mostRecentMessageReceived.id, MessageState.RECIPIENT_SEEN);
}
});
});
this.publishSubscribePlugin.publish$
.subscribe((event) => this.handlePubSubEvent(event));
}
async onBeforeOnline() {
this.parseContactMessageStates().catch(err => this.logService.error('error parsing contact message states', err));
}
async parseContactMessageStates() {
const itemElements = await this.publishSubscribePlugin.retrieveNodeItems(STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES);
this.processPubSub(itemElements);
}
processPubSub(itemElements) {
let results = [];
if (itemElements.length === 1) {
results = itemElements[0]
.getChild(wrapperNodeName)
.getChildren(nodeName)
.map((contactMessageStateElement) => {
const { lastRecipientReceived, lastRecipientSeen, lastSent, jid } = contactMessageStateElement.attrs;
return [
jid,
{
lastRecipientSeen: new Date(+lastRecipientSeen || 0),
lastRecipientReceived: new Date(+lastRecipientReceived || 0),
lastSent: new Date(+lastSent || 0),
}
];
});
}
this.jidToMessageStateDate = new Map(results);
}
async persistContactMessageStates() {
const messageStateElements = [...this.jidToMessageStateDate.entries()]
.map(([jid, stateDates]) => xml(nodeName, {
jid,
lastRecipientReceived: String(stateDates.lastRecipientReceived.getTime()),
lastRecipientSeen: String(stateDates.lastRecipientSeen.getTime()),
lastSent: String(stateDates.lastSent.getTime()),
}));
await this.publishSubscribePlugin.storePrivatePayloadPersistent(STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES, 'current', xml(wrapperNodeName, {}, ...messageStateElements));
}
onOffline() {
this.jidToMessageStateDate.clear();
}
beforeSendMessage(messageStanza, message) {
const { type } = messageStanza.attrs;
if (type === 'chat' && message) {
message.state = MessageState.SENDING;
}
}
async afterSendMessage(message, messageStanza) {
const { type, to } = messageStanza.attrs;
if (type === 'chat') {
this.updateContactMessageState(parseJid(to).bare().toString(), MessageState.SENT, new Date(await this.entityTimePlugin.getNow()));
delete message.state;
}
}
afterReceiveMessage(messageReceived, stanza, messageReceivedEvent) {
const messageStateElement = stanza.getChild('message-state', STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES);
if (messageStateElement) {
// we received a message state or a message via carbon from another resource, discard it
messageReceivedEvent.discard = true;
}
else if (messageReceived.direction === Direction.in && !messageReceived.fromArchive && stanza.attrs.type !== 'groupchat') {
this.acknowledgeReceivedMessage(stanza);
}
}
acknowledgeReceivedMessage(stanza) {
const { from } = stanza.attrs;
const isChatWithContactOpen = this.chatMessageListRegistry.isChatOpen(this.xmppChatAdapter.getOrCreateContactById(from));
const state = isChatWithContactOpen ? MessageState.RECIPIENT_SEEN : MessageState.RECIPIENT_RECEIVED;
const messageId = MessageUuidPlugin.extractIdFromStanza(stanza);
this.sendMessageStateNotification(parseJid(from), messageId, state).catch(e => this.logService.error('error sending state notification', e));
}
async sendMessageStateNotification(recipient, messageId, state) {
const messageStateResponse = xml('message', {
to: recipient.bare().toString(),
from: this.xmppChatAdapter.chatConnectionService.userJid.toString(),
type: 'chat'
}, xml('message-state', {
xmlns: STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES,
messageId,
date: new Date(await this.entityTimePlugin.getNow()).toISOString(),
state
}));
await this.xmppChatAdapter.chatConnectionService.send(messageStateResponse);
}
handleStanza(stanza) {
const { type, from } = stanza.attrs;
const stateElement = stanza.getChild('message-state', STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES);
if (type === 'chat' && stateElement) {
this.handleStateNotificationStanza(stateElement, from);
return true;
}
return false;
}
handleStateNotificationStanza(stateElement, from) {
const { state, date } = stateElement.attrs;
const contact = this.xmppChatAdapter.getOrCreateContactById(from);
const stateDate = new Date(date);
this.updateContactMessageState(contact.jidBare.toString(), state, stateDate);
}
updateContactMessageState(contactJid, state, stateDate) {
const current = this.getContactMessageState(contactJid);
let changed = false;
if (state === MessageState.RECIPIENT_RECEIVED && current.lastRecipientReceived < stateDate) {
current.lastRecipientReceived = stateDate;
changed = true;
}
else if (state === MessageState.RECIPIENT_SEEN && current.lastRecipientSeen < stateDate) {
current.lastRecipientReceived = stateDate;
current.lastRecipientSeen = stateDate;
changed = true;
}
else if (state === MessageState.SENT && current.lastSent < stateDate) {
current.lastSent = stateDate;
changed = true;
}
if (changed) {
this.persistContactMessageStates().catch(err => this.logService.error('error persisting contact message states', err));
}
}
getContactMessageState(contactJid) {
if (!this.jidToMessageStateDate.has(contactJid)) {
this.jidToMessageStateDate.set(contactJid, {
lastRecipientReceived: new Date(0),
lastRecipientSeen: new Date(0),
lastSent: new Date(0),
});
}
return this.jidToMessageStateDate.get(contactJid);
}
handlePubSubEvent(event) {
const items = event.getChild('items');
const itemsNode = items?.attrs.node;
const itemElements = items?.getChildren('item');
if (itemsNode === STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES && itemElements) {
this.processPubSub(itemElements);
}
}
}
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{jid as parseJid, xml} from '@xmpp/client';\nimport {JID} from '@xmpp/jid';\nimport {Element} from 'ltx';\nimport {filter} from 'rxjs/operators';\nimport {Direction, Message, MessageState} from '../../../../core/message';\nimport {MessageWithBodyStanza, Stanza} from '../../../../core/stanza';\nimport {ChatMessageListRegistryService} from '../../../chat-message-list-registry.service';\nimport {LogService} from '../../../log.service';\nimport {XmppChatAdapter} from '../xmpp-chat-adapter.service';\nimport {AbstractXmppPlugin} from './abstract-xmpp-plugin';\nimport {EntityTimePlugin} from './entity-time.plugin';\nimport {MessageUuidPlugin} from './message-uuid.plugin';\nimport {MessageReceivedEvent} from './message.plugin';\nimport {PublishSubscribePlugin} from './publish-subscribe.plugin';\n\nexport interface StateDate {\n    lastRecipientReceived: Date;\n    lastRecipientSeen: Date;\n    lastSent: Date;\n}\n\nexport type JidToMessageStateDate = Map<string, StateDate>;\n\nconst STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES = 'ngxchat:contactmessagestates';\nconst wrapperNodeName = 'entries';\nconst nodeName = 'contact-message-state';\n\n/**\n * Plugin using PubSub to persist message read states.\n * Custom not part of the XMPP Specification\n * Standardized implementation specification would be https://xmpp.org/extensions/xep-0184.html\n */\nexport class MessageStatePlugin extends AbstractXmppPlugin {\n\n    private jidToMessageStateDate: JidToMessageStateDate = new Map();\n\n    constructor(\n        private readonly publishSubscribePlugin: PublishSubscribePlugin,\n        private readonly xmppChatAdapter: XmppChatAdapter,\n        private readonly chatMessageListRegistry: ChatMessageListRegistryService,\n        private readonly logService: LogService,\n        private readonly entityTimePlugin: EntityTimePlugin,\n    ) {\n        super();\n\n        this.chatMessageListRegistry.openChats$\n            .pipe(\n                filter(() => xmppChatAdapter.state$.getValue() === 'online'),\n            )\n            .subscribe(contacts => {\n                contacts.forEach(async contact => {\n                    if (contact.mostRecentMessageReceived) {\n                        await this.sendMessageStateNotification(\n                            contact.jidBare,\n                            contact.mostRecentMessageReceived.id,\n                            MessageState.RECIPIENT_SEEN);\n                    }\n                });\n            });\n\n        this.publishSubscribePlugin.publish$\n            .subscribe((event) => this.handlePubSubEvent(event as Stanza));\n    }\n\n    async onBeforeOnline(): Promise<void> {\n        this.parseContactMessageStates().catch(err => this.logService.error('error parsing contact message states', err));\n    }\n\n    private async parseContactMessageStates(): Promise<void> {\n        const itemElements = await this.publishSubscribePlugin.retrieveNodeItems(STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES);\n        this.processPubSub(itemElements);\n    }\n\n    private processPubSub(itemElements: Element[]): void {\n        let results = [] as [string, StateDate][];\n        if (itemElements.length === 1) {\n            results = itemElements[0]\n                .getChild(wrapperNodeName)\n                .getChildren(nodeName)\n                .map((contactMessageStateElement: Stanza) => {\n                    const {lastRecipientReceived, lastRecipientSeen, lastSent, jid} = contactMessageStateElement.attrs;\n                    return [\n                        jid,\n                        {\n                            lastRecipientSeen: new Date(+lastRecipientSeen || 0),\n                            lastRecipientReceived: new Date(+lastRecipientReceived || 0),\n                            lastSent: new Date(+lastSent || 0),\n                        }\n                    ];\n                });\n        }\n        this.jidToMessageStateDate = new Map(results);\n    }\n\n    private async persistContactMessageStates(): Promise<void> {\n        const messageStateElements =\n            [...this.jidToMessageStateDate.entries()]\n                .map(([jid, stateDates]) =>\n                    xml(nodeName, {\n                        jid,\n                        lastRecipientReceived: String(stateDates.lastRecipientReceived.getTime()),\n                        lastRecipientSeen: String(stateDates.lastRecipientSeen.getTime()),\n                        lastSent: String(stateDates.lastSent.getTime()),\n                    })\n                );\n\n        await this.publishSubscribePlugin.storePrivatePayloadPersistent(\n            STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES,\n            'current',\n            xml(wrapperNodeName, {}, ...messageStateElements));\n    }\n\n    onOffline(): void {\n        this.jidToMessageStateDate.clear();\n    }\n\n    beforeSendMessage(messageStanza: Element, message: Message): void {\n        const {type} = messageStanza.attrs;\n        if (type === 'chat' && message) {\n            message.state = MessageState.SENDING;\n        }\n    }\n\n    async afterSendMessage(message: Message, messageStanza: Element): Promise<void> {\n        const {type, to} = messageStanza.attrs;\n        if (type === 'chat') {\n            this.updateContactMessageState(\n                parseJid(to).bare().toString(),\n                MessageState.SENT,\n                new Date(await this.entityTimePlugin.getNow()));\n            delete message.state;\n        }\n    }\n\n    afterReceiveMessage(messageReceived: Message, stanza: MessageWithBodyStanza, messageReceivedEvent: MessageReceivedEvent): void {\n        const messageStateElement = stanza.getChild('message-state', STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES);\n        if (messageStateElement) {\n            // we received a message state or a message via carbon from another resource, discard it\n            messageReceivedEvent.discard = true;\n        } else if (messageReceived.direction === Direction.in && !messageReceived.fromArchive && stanza.attrs.type !== 'groupchat') {\n            this.acknowledgeReceivedMessage(stanza);\n        }\n    }\n\n    private acknowledgeReceivedMessage(stanza: MessageWithBodyStanza): void {\n        const {from} = stanza.attrs;\n        const isChatWithContactOpen = this.chatMessageListRegistry.isChatOpen(this.xmppChatAdapter.getOrCreateContactById(from));\n        const state = isChatWithContactOpen ? MessageState.RECIPIENT_SEEN : MessageState.RECIPIENT_RECEIVED;\n        const messageId = MessageUuidPlugin.extractIdFromStanza(stanza);\n        this.sendMessageStateNotification(parseJid(from), messageId, state).catch(e => this.logService.error('error sending state notification', e));\n    }\n\n    private async sendMessageStateNotification(recipient: JID, messageId: string, state: MessageState): Promise<void> {\n        const messageStateResponse = xml('message', {\n                to: recipient.bare().toString(),\n                from: this.xmppChatAdapter.chatConnectionService.userJid.toString(),\n                type: 'chat'\n            },\n            xml('message-state', {\n                xmlns: STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES,\n                messageId,\n                date: new Date(await this.entityTimePlugin.getNow()).toISOString(),\n                state\n            })\n        );\n        await this.xmppChatAdapter.chatConnectionService.send(messageStateResponse);\n    }\n\n    handleStanza(stanza: Stanza): boolean {\n        const {type, from} = stanza.attrs;\n        const stateElement = stanza.getChild('message-state', STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES);\n        if (type === 'chat' && stateElement) {\n            this.handleStateNotificationStanza(stateElement, from);\n            return true;\n        }\n        return false;\n    }\n\n    private handleStateNotificationStanza(stateElement: Element, from: string): void {\n        const {state, date} = stateElement.attrs;\n        const contact = this.xmppChatAdapter.getOrCreateContactById(from);\n        const stateDate = new Date(date);\n        this.updateContactMessageState(contact.jidBare.toString(), state, stateDate);\n    }\n\n    private updateContactMessageState(contactJid: string, state: MessageState, stateDate: Date): void {\n        const current = this.getContactMessageState(contactJid);\n        let changed = false;\n        if (state === MessageState.RECIPIENT_RECEIVED && current.lastRecipientReceived < stateDate) {\n            current.lastRecipientReceived = stateDate;\n            changed = true;\n        } else if (state === MessageState.RECIPIENT_SEEN && current.lastRecipientSeen < stateDate) {\n            current.lastRecipientReceived = stateDate;\n            current.lastRecipientSeen = stateDate;\n            changed = true;\n        } else if (state === MessageState.SENT && current.lastSent < stateDate) {\n            current.lastSent = stateDate;\n            changed = true;\n        }\n        if (changed) {\n            this.persistContactMessageStates().catch(err => this.logService.error('error persisting contact message states', err));\n        }\n    }\n\n    public getContactMessageState(contactJid: string): StateDate | undefined {\n        if (!this.jidToMessageStateDate.has(contactJid)) {\n            this.jidToMessageStateDate.set(\n                contactJid,\n                {\n                    lastRecipientReceived: new Date(0),\n                    lastRecipientSeen: new Date(0),\n                    lastSent: new Date(0),\n                }\n            );\n        }\n        return this.jidToMessageStateDate.get(contactJid);\n    }\n\n    private handlePubSubEvent(event: Element): void {\n        const items: Element | undefined = event.getChild('items');\n        const itemsNode = items?.attrs.node;\n        const itemElements: Element[] | undefined = items?.getChildren('item');\n        if (itemsNode === STORAGE_NGX_CHAT_CONTACT_MESSAGE_STATES && itemElements) {\n            this.processPubSub(itemElements);\n        }\n    }\n}\n"]}