52 lines
1.3 KiB
TypeScript
52 lines
1.3 KiB
TypeScript
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import { Injectable } from '@angular/core';
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import { Store } from '@ngrx/store';
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import { Effect, Actions, ofType } from '@ngrx/effects';
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import { of, Observable } from 'rxjs';
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import { catchError, exhaustMap, map, tap, withLatestFrom } from 'rxjs/operators';
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import { MetaCrawler } from '@overflow/commons-typescript/model/meta';
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import { MetaCrawlerService } from '../../../service/meta-crawler.service';
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import {
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ReadAll,
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ReadAllSuccess,
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ReadAllFailure,
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ActionType,
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} from './meta-crawler.action';
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import {
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MetaCrawlerEntitySelector,
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} from '../../';
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@Injectable()
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export class Effects {
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constructor(
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private actions$: Actions,
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private store$: Store<any>,
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private metaCrawlerService: MetaCrawlerService,
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) { }
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@Effect()
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readAll$ = this.actions$.pipe(
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ofType(ActionType.ReadAll),
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withLatestFrom(this.store$.select(MetaCrawlerEntitySelector.selectAll)),
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exhaustMap(([action, results]) => {
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if (0 < results.length) {
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return of(new ReadAllSuccess(results));
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}
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return this.metaCrawlerService
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.readAll()
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.pipe(
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map((result: MetaCrawler[]) => {
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return new ReadAllSuccess(result);
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}),
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catchError(error => of(new ReadAllFailure(error)))
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);
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}
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)
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);
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}
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