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import { Router, RouterLink, RouterLinkActive, RouterOutlet } from '@angular/router';
import { pickBy, uniq } from 'lodash-es';
import { DateTime } from 'luxon';
import { autorun, IReactionDisposer, runInAction } from 'mobx';
import { MobxAngularModule } from 'mobx-angular';
import { catchError, filter, map, of, Subject, Subscription, switchMap, takeUntil, throwError } from 'rxjs';
import { tap } from 'rxjs/operators';
import { LoadingComponent } from '../../component/loading/loading.component';
import { RefComponent } from '../../component/ref/ref.component';
import { SidebarComponent } from '../../component/sidebar/sidebar.component';
import { TabsComponent } from '../../component/tabs/tabs.component';
import { HasChanges } from '../../guard/pending-changes.guard';
import { Ref } from '../../model/ref';
import { isWiki } from '../../mods/org/wiki';
import { AdminService } from '../../service/admin.service';
import { RefService } from '../../service/api/ref.service';
import { StompService } from '../../service/api/stomp.service';
import { TaggingService } from '../../service/api/tagging.service';
import { ConfigService } from '../../service/config.service';
import { Store } from '../../store/store';
import { memo, MemoCache } from '../../util/memo';
import { markRead } from '../../util/response';
import { hasTag, privateTag, top } from '../../util/tag';
@Component({
selector: 'app-ref-page',
templateUrl: './ref.component.html',
styleUrls: ['./ref.component.scss'],
imports: [
RefComponent,
MobxAngularModule,
TabsComponent,
RouterLink,
RouterLinkActive,
SidebarComponent,
RouterOutlet,
LoadingComponent,
],
})
export class RefPage implements OnInit, OnDestroy, HasChanges {
private disposers: IReactionDisposer[] = [];
private destroy$ = new Subject<void>();
@ViewChild('ref')
ref?: RefComponent;
newResponses = 0;
private url = '';
private watchSelf?: Subscription;
private watchUrl = '';
private watchResponses?: Subscription;
private seen = new Set<string>();
constructor(
public config: ConfigService,
public admin: AdminService,
public store: Store,
private refs: RefService,
private ts: TaggingService,
private router: Router,
private stomp: StompService,
) { }
saveChanges() {
return !this.ref || this.ref.saveChanges();
}
ngOnInit(): void {
this.url = this.store.view.url;
Iif (this.url) this.reload(this.url);
this.disposers.push(autorun(() => {
const url = this.store.view.url;
Eif (!url) return;
if (url === this.url) return;
this.url = url;
this.reload(url);
}));
}
ngOnDestroy() {
this.destroy$.next();
this.destroy$.complete();
for (const dispose of this.disposers) dispose();
this.disposers.length = 0;
this.store.view.clearRef();
}
@memo
get refWarning() {
const warn = this.sources > 0 && this.store.view.published && +this.store.view.ref!.published! !== +DateTime.fromISO(this.store.view.published);
if (this.store.view.published) this.router.navigate([], { queryParams: { published: null }, queryParamsHandling: 'merge', replaceUrl: true });
return warn;
}
@memo
get expandedOnLoad() {
return this.store.view.current === 'ref/thread' ||
this.store.local.isRefToggled(this.store.view.url, this.store.view.current === 'ref/summary' || this.fullscreen?.onload);
}
@memo
get fullscreen() {
if (!this.admin.getPlugin('plugin/fullscreen')) return undefined;
return this.store.view.ref?.plugins?.['plugin/fullscreen'];
}
@memo
get comment() {
return this.admin.getPlugin('plugin/comment') && hasTag('plugin/comment', this.store.view.ref);
}
@memo
get comments() {
Eif (!this.admin.getPlugin('plugin/comment')) return 0;
return this.store.view.ref?.metadata?.plugins?.['plugin/comment'] || 0;
}
@memo
get thread() {
return this.admin.getPlugin('plugin/thread') && (hasTag('plugin/thread', this.store.view.ref) || this.store.view.current === 'ref/thread');
}
@memo
get threads() {
Eif (!this.admin.getPlugin('plugin/thread')) return 0;
return hasTag('plugin/thread', this.store.view.ref) || this.store.view.ref?.metadata?.plugins?.['plugin/thread'];
}
@memo
get logs() {
Eif (!this.admin.getPlugin('+plugin/log')) return 0;
return this.store.view.ref?.metadata?.plugins?.['+plugin/log'];
}
@memo
get responses() {
return this.store.view.ref?.metadata?.responses || 0;
}
@memo
get sources() {
const sources = (this.store.view.ref?.sources || []).filter( s => s != this.store.view.url);
return sources.length || 0;
}
@memo
get alts() {
return this.store.view.ref?.alternateUrls?.length || 0;
}
reload(url?: string) {
url ||= this.url || '';
if (!url) {
this.store.view.clear();
return;
}
this.newResponses = 0;
this.refs.count({ url, obsolete: true }).subscribe(count => runInAction(() =>
this.store.view.versions = count));
const fetchTop = (ref: Ref) => hasTag('plugin/thread', ref) || hasTag('plugin/comment', ref);
(url === this.store.view.ref?.url
? of(this.store.view.ref)
: this.refs.getCurrent(url)
).pipe(
catchError(err => err.status === 404 ? of(undefined) : throwError(() => err)),
map(ref => ref || { url }),
tap(ref => this.markRead(ref)),
switchMap(ref => !fetchTop(ref) ? of([ref, undefined])
: top(ref) === url ? of([ref, ref])
: top(ref) === this.store.view.top?.url ? of([ref, this.store.view.top])
: this.refs.getCurrent(top(ref)).pipe(
map(top => [ref, top]),
catchError(err => err.status === 404 ? of([ref, undefined]) : throwError(() => err)),
)),
tap(([ref, top]) => runInAction(() => this.store.view.setRef(ref, top))),
takeUntil(this.destroy$),
).subscribe(() => MemoCache.clear(this));
if (this.config.websockets && this.watchUrl !== url) {
this.watchUrl = url;
this.watchSelf?.unsubscribe();
this.watchSelf = this.stomp.watchRef(url).pipe(
takeUntil(this.destroy$),
).subscribe(ud => {
MemoCache.clear(this);
// Merge updates with existing Ref because updates do not contain any private tags
const tags = uniq([...this.store.view.ref!.tags || [], ...ud.tags || []])
.filter(t => privateTag(t) || ud.tags?.includes(t));
const merged: Ref = {
...ud,
tags,
metadata: {
...ud.metadata,
plugins: {
...pickBy(this.store.view.ref?.metadata?.plugins, (v, k) => tags.includes(k)),
...ud.metadata?.plugins || {},
}
},
plugins: {
...pickBy(this.store.view.ref!.plugins, (v, k) => tags.includes(k)),
...ud.plugins || {},
},
// Don't allow editing an update Ref, as we cannot tell when a private
// tag was deleted
// TODO: mark Ref as modified remotely to warn user before editing
modified: this.store.view.ref?.modified,
modifiedString: this.store.view.ref?.modifiedString,
};
runInAction(() => Object.assign(this.store.view.ref!, merged));
this.store.eventBus.refresh(merged);
this.store.eventBus.reset();
});
this.watchResponses?.unsubscribe();
this.watchResponses = this.stomp.watchResponse(url).pipe(
filter(url => url != this.store.view.url),
filter(url => !url.startsWith('tag:')),
filter(url => !this.seen.has(url)),
takeUntil(this.destroy$),
).subscribe(url => {
this.seen.add(url);
this.newResponses++;
});
}
}
@memo
isWiki(url: string) {
return !this.admin.isWikiExternal() && isWiki(url, this.admin.getWikiPrefix());
}
markRead(ref: Ref) {
markRead(this.admin, this.ts, ref);
}
}
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