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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | 88x 88x 88x 38x 38x 38x 38x 38x 38x 38x 38x 88x 88x 88x 88x 88x 88x 88x 88x 88x 19x 19x 30x 30x 30x 30x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 30x 30x 30x 20x 20x 8x 30x 30x 1x 1x 30x 30x 30x 30x 30x 1x 1x | import { HttpErrorResponse } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { isEqual, omit } from 'lodash-es';
import { action, makeAutoObservable, observableRef, observableStruct, runInAction } from 'mobx';
import { catchError, EMPTY, Observable, Subscription } from 'rxjs';
import { Page } from '../model/page';
import { Ref, RefPageArgs } from '../model/ref';
import { RefService } from '../service/api/ref.service';
import { withStableDateSort } from '../util/query';
interface PendingCursor {
args: RefPageArgs;
target: number;
request: Observable<Page<Ref>>;
}
@Injectable({
providedIn: 'root'
})
export class QueryStore {
args?: RefPageArgs = {} as any;
sourcesOf?: Ref = {} as any;
responseOf?: Ref = {} as any;
page?: Page<Ref> = {} as any;
error?: HttpErrorResponse = {} as any;
private running?: Subscription;
private runningSources?: Subscription;
private runningResponses?: Subscription;
private pendingCursor?: PendingCursor;
constructor(
private refs: RefService,
) {
makeAutoObservable(this, {
args: observableStruct,
page: observableRef,
clear: action,
});
this.clear(); // Initial observables may not be null for MobX
}
clear() {
this.args = undefined;
this.page = undefined;
this.error = undefined;
this.sourcesOf = undefined;
this.responseOf = undefined;
this.running?.unsubscribe();
this.runningSources?.unsubscribe();
this.runningResponses?.unsubscribe();
this.pendingCursor = undefined;
}
close() {
this.pendingCursor = undefined;
if (this.running && !this.running.closed) this.clear()
}
setArgs(args: RefPageArgs) {
const cursorRequest = this.takeCursor(args);
if (!isEqual(omit(this.args, 'search'), omit(args, 'search'))) this.clear();
this.args = args;
this.refresh(cursorRequest);
}
queueCursorPage(target: number, request: Observable<Page<Ref>>) {
Iif (!this.args) return;
this.pendingCursor = {
args: { ...this.args },
target,
request,
};
}
setRelatedArgs(args: RefPageArgs) {
this.pendingCursor = undefined;
this.args = args;
this.runningSources?.unsubscribe();
if (args.sources) {
this.runningSources = this.refs.getCurrent(args.sources).pipe(
catchError(() => EMPTY),
).subscribe(ref => runInAction(() => this.sourcesOf = ref));
} else E{
this.sourcesOf = undefined;
}
this.runningResponses?.unsubscribe();
Iif (args.responses) {
this.runningResponses = this.refs.getCurrent(args.responses).pipe(
catchError(() => EMPTY),
).subscribe(ref => runInAction(() => this.responseOf = ref));
} else {
this.responseOf = undefined;
}
}
refresh(pageRequest?: Observable<Page<Ref>>) {
Eif (this.args) {
this.running?.unsubscribe();
this.running = (pageRequest ?? this.refs.page(withStableDateSort(this.args))).pipe(
catchError((err: HttpErrorResponse) => {
runInAction(() => this.error = err);
return EMPTY;
}),
).subscribe(p => runInAction(() => this.page = p));
this.runningSources?.unsubscribe();
if (this.args.sources) {
this.runningSources = this.refs.getCurrent(this.args.sources).pipe(
catchError(() => EMPTY),
).subscribe(ref => runInAction(() => this.sourcesOf = ref));
}
this.runningResponses?.unsubscribe();
Iif (this.args.responses) {
this.runningResponses = this.refs.getCurrent(this.args.responses).pipe(
catchError(() => EMPTY),
).subscribe(ref => runInAction(() => this.responseOf = ref));
}
}
}
private takeCursor(args: RefPageArgs): Observable<Page<Ref>> | undefined {
const pending = this.pendingCursor;
this.pendingCursor = undefined;
if (pending?.target !== Number(args.page)) return undefined;
Iif (!isEqual(
omit(pending.args, 'page', 'obsolete'),
omit(args, 'page', 'obsolete'),
)) return undefined;
return pending.request;
}
}
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