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import XRegExp from "xregexp";
import { Observable, BehaviorSubject, switchMap, filter } from "rxjs";
import {
HubConnection,
HubConnectionBuilder,
HubConnectionState,
} from "@microsoft/signalr";
import { TimelineVisibility } from "@/http/timeline";
import { token$ } from "@/http/common";
// cSpell:ignore onreconnected onreconnecting
const timelineNameReg = XRegExp("^[-_\\p{L}]*$", "u");
export function validateTimelineName(name: string): boolean {
return timelineNameReg.test(name);
}
export const timelineVisibilityTooltipTranslationMap: Record<
TimelineVisibility,
string
> = {
Public: "timeline.visibilityTooltip.public",
Register: "timeline.visibilityTooltip.register",
Private: "timeline.visibilityTooltip.private",
};
type ConnectionState =
| "Connecting"
| "Reconnecting"
| "Disconnected"
| "Connected";
type Connection = {
connection: HubConnection;
state$: Observable<ConnectionState>;
};
function createConnection$(token: string | null): Observable<Connection> {
return new Observable<Connection>((subscriber) => {
const connectionStateSubject = new BehaviorSubject<ConnectionState>(
"Connecting",
);
const connection = new HubConnectionBuilder()
.withUrl("/api/hub/timeline", {
accessTokenFactory: token == null ? undefined : () => token,
})
.withAutomaticReconnect()
.build();
connection.onclose = () => {
connectionStateSubject.next("Disconnected");
};
connection.onreconnecting = () => {
connectionStateSubject.next("Reconnecting");
};
connection.onreconnected = () => {
connectionStateSubject.next("Connected");
};
void connection.start().then(() => {
connectionStateSubject.next("Connected");
});
subscriber.next({
connection,
state$: connectionStateSubject.asObservable(),
});
return () => {
void connection.stop();
};
});
}
const connectionSubject = new BehaviorSubject<Connection | null>(null);
token$.pipe(switchMap(createConnection$)).subscribe(connectionSubject);
const connection$ = connectionSubject
.asObservable()
.pipe(filter((c): c is Connection => c != null));
function createTimelinePostUpdateCount$(
connection: HubConnection,
owner: string,
timeline: string,
): Observable<number> {
const [o, t] = [owner, timeline];
return new Observable<number>((subscriber) => {
let count = 0;
const handler = (owner: string, timeline: string): void => {
if (owner === o && timeline === t) {
subscriber.next(count++);
}
};
connection.on("OnTimelinePostChangedV2", handler);
void connection.invoke("SubscribeTimelinePostChangeV2", owner, timeline);
return () => {
void connection.invoke(
"UnsubscribeTimelinePostChangeV2",
owner,
timeline,
);
connection.off("OnTimelinePostChangedV2", handler);
};
});
}
type OldUpdateInfo = { update: boolean; state: HubConnectionState };
function createTimelinePostOldUpdateInfo$(
connection: Connection,
owner: string,
timeline: string,
): Observable<OldUpdateInfo> {
return new Observable<OldUpdateInfo>((subscriber) => {
let savedState: ConnectionState = "Connecting";
const postUpdateSubscription = createTimelinePostUpdateCount$(
connection.connection,
owner,
timeline,
).subscribe(() => {
subscriber.next({
update: true,
state: savedState as HubConnectionState,
});
});
const stateSubscription = connection.state$.subscribe((state) => {
savedState = state;
subscriber.next({ update: false, state: state as HubConnectionState });
});
return () => {
stateSubscription.unsubscribe();
postUpdateSubscription.unsubscribe();
};
});
}
export function getTimelinePostUpdate$(
owner: string,
timeline: string,
): Observable<OldUpdateInfo> {
return connection$.pipe(
switchMap((connection) =>
createTimelinePostOldUpdateInfo$(connection, owner, timeline),
),
);
}
|
