| /******************************************************************************** |
| * Copyright (c) 2020 Contributors to the Eclipse Foundation |
| * |
| * See the NOTICE file(s) distributed with this work for additional |
| * information regarding copyright ownership. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0 |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| ********************************************************************************/ |
| |
| import {Injectable} from "@angular/core"; |
| import {Actions, createEffect, ofType} from "@ngrx/effects"; |
| import {Action} from "@ngrx/store"; |
| import {Observable} from "rxjs"; |
| import {filter, ignoreElements, map, retry, switchMap} from "rxjs/operators"; |
| import {StatementsApiService} from "../../../../core/api/statements"; |
| import {catchErrorTo, endWithObservable} from "../../../../util/rxjs"; |
| import {setErrorAction} from "../../../root/actions"; |
| import {EErrorCode} from "../../../root/model"; |
| import {addCommentAction, deleteCommentAction, fetchCommentsAction, updateStatementEntityAction} from "../../actions"; |
| |
| @Injectable({providedIn: "root"}) |
| export class CommentsEffect { |
| |
| public fetch$ = createEffect(() => this.actions.pipe( |
| ofType(fetchCommentsAction), |
| filter((action) => action.statementId != null), |
| switchMap((action) => this.fetchComments(action.statementId)) |
| )); |
| |
| public add$ = createEffect(() => this.actions.pipe( |
| ofType(addCommentAction), |
| filter((action) => action.statementId != null && action.text != null), |
| switchMap((action) => this.addComment(action.statementId, action.text)) |
| )); |
| |
| public delete$ = createEffect(() => this.actions.pipe( |
| ofType(deleteCommentAction), |
| filter((action) => action.statementId != null && action.commentId != null), |
| switchMap((action) => this.deleteComment(action.statementId, action.commentId)) |
| )); |
| |
| public constructor(public actions: Actions, private readonly statementsApiService: StatementsApiService) { |
| |
| } |
| |
| public fetchComments(statementId: number): Observable<Action> { |
| return this.statementsApiService.getComments(statementId).pipe( |
| map((comments) => updateStatementEntityAction({statementId, entity: {comments}})), |
| retry(2), |
| catchErrorTo(setErrorAction({error: EErrorCode.UNEXPECTED})), |
| ); |
| } |
| |
| public addComment(statementId: number, comment: string): Observable<Action> { |
| return this.statementsApiService.putComment(statementId, comment).pipe( |
| ignoreElements(), |
| retry(2), |
| catchErrorTo(setErrorAction({error: EErrorCode.UNEXPECTED})), |
| endWithObservable(() => this.fetchComments(statementId)) |
| ); |
| } |
| |
| public deleteComment(statementId: number, commentId: number): Observable<Action> { |
| return this.statementsApiService.deleteComment(statementId, commentId).pipe( |
| ignoreElements(), |
| retry(2), |
| catchErrorTo(setErrorAction({error: EErrorCode.UNEXPECTED})), |
| endWithObservable(() => this.fetchComments(statementId)) |
| ); |
| } |
| |
| } |