@hsaadawy/ngx-chat
Version:
162 lines • 23.2 kB
JavaScript
import { __awaiter } from "tslib";
import { Injectable, NgZone } from '@angular/core';
import { xml } from '@xmpp/client';
import { BehaviorSubject, Subject } from 'rxjs';
import { LogService } from '../../log.service';
import { XmppClientFactoryService } from './xmpp-client-factory.service';
import { IqResponseError } from './iq-response.error';
/**
* Implementation of the XMPP specification according to RFC 6121.
* @see https://xmpp.org/rfcs/rfc6121.html
* @see https://xmpp.org/rfcs/rfc3920.html
* @see https://xmpp.org/rfcs/rfc3921.html
*/
export class XmppChatConnectionService {
constructor(logService, ngZone, xmppClientFactoryService) {
this.logService = logService;
this.ngZone = ngZone;
this.xmppClientFactoryService = xmppClientFactoryService;
this.state$ = new BehaviorSubject('disconnected');
this.stanzaUnknown$ = new Subject();
this.iqId = new Date().getTime();
this.iqStanzaResponseHandlers = new Map();
}
onOnline(jid) {
this.logService.info('online =', 'online as', jid.toString());
this.userJid = jid;
this.state$.next('online');
}
sendPresence() {
return __awaiter(this, void 0, void 0, function* () {
yield this.send(xml('presence'));
});
}
send(content) {
return __awaiter(this, void 0, void 0, function* () {
this.logService.debug('>>>', content);
yield this.client.send(content);
});
}
sendIq(request) {
return new Promise((resolve, reject) => {
request.attrs = Object.assign({ id: this.getNextIqId(), from: this.userJid.toString() }, request.attrs);
const { id } = request.attrs;
if (!request.attrs.type) {
const message = 'iq stanza without type: ' + request.toString();
this.logService.error(message);
throw new Error(message);
}
this.iqStanzaResponseHandlers.set(id, (response) => {
if (response.attrs.type === 'result') {
resolve(response);
}
else {
const errorResponse = response;
reject(new IqResponseError(errorResponse));
}
});
this.send(request).catch((e) => {
this.logService.error('error sending iq', e);
this.iqStanzaResponseHandlers.delete(id);
reject(e);
});
});
}
sendIqAckResult(id) {
return __awaiter(this, void 0, void 0, function* () {
yield this.send(xml('iq', { from: this.userJid.toString(), id, type: 'result' }));
});
}
onStanzaReceived(stanza) {
let handled = false;
if (this.isIqStanzaResponse(stanza)) {
const handleIqStanzaResponse = this.iqStanzaResponseHandlers.get(stanza.attrs.id);
if (handleIqStanzaResponse) {
this.logService.debug('<<<', stanza.toString(), 'handled by callback', handleIqStanzaResponse);
this.iqStanzaResponseHandlers.delete(stanza.attrs.id);
handleIqStanzaResponse(stanza);
handled = true;
}
}
if (!handled) {
this.stanzaUnknown$.next(stanza);
}
}
isIqStanzaResponse(stanza) {
const stanzaType = stanza.attrs.type;
return stanza.name === 'iq' && (stanzaType === 'result' || stanzaType === 'error');
}
logIn(logInRequest) {
return __awaiter(this, void 0, void 0, function* () {
yield this.ngZone.runOutsideAngular(() => __awaiter(this, void 0, void 0, function* () {
if (logInRequest.username.indexOf('@') >= 0) {
this.logService.warn('username should not contain domain, only local part, this can lead to errors!');
}
this.client = this.xmppClientFactoryService.client(logInRequest);
this.client.on('error', (err) => {
this.ngZone.run(() => {
this.logService.error('chat service error =>', err.toString(), err);
});
});
this.client.on('status', (status, value) => {
this.ngZone.run(() => {
this.logService.info('status update =', status, value ? JSON.stringify(value) : '');
if (status === 'offline') {
this.state$.next('disconnected');
}
});
});
this.client.on('online', (jid) => {
return this.ngZone.run(() => {
return this.onOnline(jid);
});
});
this.client.on('stanza', (stanza) => {
this.ngZone.run(() => {
this.onStanzaReceived(stanza);
});
});
this.client.on('disconnect', () => {
this.ngZone.run(() => {
this.state$.next('reconnecting');
});
});
yield this.client.start();
}));
});
}
logOut() {
return __awaiter(this, void 0, void 0, function* () {
// TODO: move this to a presence plugin in a handler
this.logService.debug('logging out');
if (this.client) {
this.client.reconnect.stop();
try {
yield this.send(xml('presence', { type: 'unavailable' }));
}
catch (e) {
this.logService.error('error sending presence unavailable');
}
finally {
this.client.stop();
}
}
});
}
getNextIqId() {
return String(this.iqId++);
}
reconnectSilently() {
this.logService.warn('hard reconnect...');
this.state$.next('disconnected');
}
}
XmppChatConnectionService.decorators = [
{ type: Injectable }
];
XmppChatConnectionService.ctorParameters = () => [
{ type: LogService },
{ type: NgZone },
{ type: XmppClientFactoryService }
];
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{ Injectable, NgZone } from '@angular/core';\r\nimport { Client, xml } from '@xmpp/client';\r\nimport { JID } from '@xmpp/jid';\r\nimport { Element } from 'ltx';\r\nimport { BehaviorSubject, Subject } from 'rxjs';\r\nimport { LogInRequest } from '../../../core/log-in-request';\r\nimport { IqResponseStanza, Stanza } from '../../../core/stanza';\r\nimport { LogService } from '../../log.service';\r\nimport { XmppClientFactoryService } from './xmpp-client-factory.service';\r\nimport { IqResponseError } from './iq-response.error';\r\n\r\nexport type XmppChatStates = 'disconnected' | 'online' | 'reconnecting';\r\n\r\n/**\r\n * Implementation of the XMPP specification according to RFC 6121.\r\n * @see https://xmpp.org/rfcs/rfc6121.html\r\n * @see https://xmpp.org/rfcs/rfc3920.html\r\n * @see https://xmpp.org/rfcs/rfc3921.html\r\n */\r\n@Injectable()\r\nexport class XmppChatConnectionService {\r\n\r\n    public readonly state$ = new BehaviorSubject<XmppChatStates>('disconnected');\r\n    public readonly stanzaUnknown$ = new Subject<Stanza>();\r\n\r\n    /**\r\n     * User JID with resource, not bare.\r\n     */\r\n    public userJid?: JID;\r\n    private iqId = new Date().getTime();\r\n    private readonly iqStanzaResponseHandlers = new Map<string, (stanza: IqResponseStanza) => void>();\r\n    public client?: Client;\r\n\r\n    constructor(\r\n        private readonly logService: LogService,\r\n        private readonly ngZone: NgZone,\r\n        private readonly xmppClientFactoryService: XmppClientFactoryService,\r\n    ) {}\r\n\r\n    public onOnline(jid: JID): void {\r\n        this.logService.info('online =', 'online as', jid.toString());\r\n        this.userJid = jid;\r\n        this.state$.next('online');\r\n    }\r\n\r\n    public async sendPresence(): Promise<void> {\r\n        await this.send(\r\n            xml('presence'),\r\n        );\r\n    }\r\n\r\n    public async send(content: any): Promise<void> {\r\n        this.logService.debug('>>>', content);\r\n        await this.client.send(content);\r\n    }\r\n\r\n    public sendIq(request: Element): Promise<IqResponseStanza<'result'>> {\r\n        return new Promise((resolve, reject) => {\r\n\r\n            request.attrs = {\r\n                id: this.getNextIqId(),\r\n                from: this.userJid.toString(),\r\n                ...request.attrs,\r\n            };\r\n            const {id} = request.attrs;\r\n\r\n            if (!request.attrs.type) {\r\n                const message = 'iq stanza without type: ' + request.toString();\r\n                this.logService.error(message);\r\n                throw new Error(message);\r\n            }\r\n\r\n            this.iqStanzaResponseHandlers.set(id, (response: IqResponseStanza) => {\r\n                if (response.attrs.type === 'result') {\r\n                    resolve(response as IqResponseStanza<'result'>);\r\n                } else {\r\n                    const errorResponse = response as IqResponseStanza<'error'>;\r\n                    reject(new IqResponseError(errorResponse));\r\n                }\r\n            });\r\n\r\n            this.send(request).catch((e: unknown) => {\r\n                this.logService.error('error sending iq', e);\r\n                this.iqStanzaResponseHandlers.delete(id);\r\n                reject(e);\r\n            });\r\n        });\r\n    }\r\n\r\n    public async sendIqAckResult(id: string): Promise<void> {\r\n        await this.send(\r\n            xml('iq', {from: this.userJid.toString(), id, type: 'result'}),\r\n        );\r\n    }\r\n\r\n    public onStanzaReceived(stanza: Stanza): void {\r\n        let handled = false;\r\n        if (this.isIqStanzaResponse(stanza)) {\r\n            const handleIqStanzaResponse = this.iqStanzaResponseHandlers.get(stanza.attrs.id);\r\n            if (handleIqStanzaResponse) {\r\n                this.logService.debug('<<<', stanza.toString(), 'handled by callback', handleIqStanzaResponse);\r\n                this.iqStanzaResponseHandlers.delete(stanza.attrs.id);\r\n                handleIqStanzaResponse(stanza);\r\n                handled = true;\r\n            }\r\n        }\r\n\r\n        if (!handled) {\r\n            this.stanzaUnknown$.next(stanza);\r\n        }\r\n    }\r\n\r\n    private isIqStanzaResponse(stanza: Stanza): stanza is IqResponseStanza {\r\n        const stanzaType = stanza.attrs.type;\r\n        return stanza.name === 'iq' && (stanzaType === 'result' || stanzaType === 'error');\r\n    }\r\n\r\n    async logIn(logInRequest: LogInRequest): Promise<void> {\r\n        await this.ngZone.runOutsideAngular(async () => {\r\n            if (logInRequest.username.indexOf('@') >= 0) {\r\n                this.logService.warn('username should not contain domain, only local part, this can lead to errors!');\r\n            }\r\n\r\n            this.client = this.xmppClientFactoryService.client(logInRequest);\r\n\r\n            this.client.on('error', (err: any) => {\r\n                this.ngZone.run(() => {\r\n                    this.logService.error('chat service error =>', err.toString(), err);\r\n                });\r\n            });\r\n\r\n            this.client.on('status', (status: any, value: any) => {\r\n                this.ngZone.run(() => {\r\n                    this.logService.info('status update =', status, value ? JSON.stringify(value) : '');\r\n                    if (status === 'offline') {\r\n                        this.state$.next('disconnected');\r\n                    }\r\n                });\r\n            });\r\n\r\n            this.client.on('online', (jid: JID) => {\r\n                return this.ngZone.run(() => {\r\n                    return this.onOnline(jid);\r\n                });\r\n            });\r\n\r\n            this.client.on('stanza', (stanza: Stanza) => {\r\n                this.ngZone.run(() => {\r\n                    this.onStanzaReceived(stanza);\r\n                });\r\n            });\r\n\r\n            this.client.on('disconnect', () => {\r\n                this.ngZone.run(() => {\r\n                    this.state$.next('reconnecting');\r\n                });\r\n            });\r\n\r\n            await this.client.start();\r\n        });\r\n    }\r\n\r\n    async logOut(): Promise<void> {\r\n        // TODO: move this to a presence plugin in a handler\r\n        this.logService.debug('logging out');\r\n        if (this.client) {\r\n            this.client.reconnect.stop();\r\n            try {\r\n                await this.send(xml('presence', {type: 'unavailable'}));\r\n            } catch (e) {\r\n                this.logService.error('error sending presence unavailable');\r\n            } finally {\r\n                this.client.stop();\r\n            }\r\n        }\r\n    }\r\n\r\n    getNextIqId(): string {\r\n        return String(this.iqId++);\r\n    }\r\n\r\n    reconnectSilently(): void {\r\n        this.logService.warn('hard reconnect...');\r\n        this.state$.next('disconnected');\r\n    }\r\n}\r\n"]}