src/app/store/process/effects/complete-task.effect.ts

/********************************************************************************
 * 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 {Router} from "@angular/router";
import {Actions, createEffect, ofType} from "@ngrx/effects";
import {Action} from "@ngrx/store";
import {Observable} from "rxjs";
import {exhaustMap, filter, switchMap} from "rxjs/operators";
import {IAPIProcessObject, ProcessApiService} from "../../../core/api/process";
import {completeTaskAction, deleteTaskAction} from "../actions";

@Injectable({providedIn: "root"})
export class CompleteTaskEffect {

    public readonly completeTask$ = createEffect(() => this.actions$.pipe(
        ofType(completeTaskAction),
        filter((action) => typeof action.statementId === "number" && typeof action.taskId === "string"),
        exhaustMap((action) => this.completeTask(action.statementId, action.taskId, action.variables))
    ));

    public constructor(
        private readonly actions$: Actions,
        private readonly processApiService: ProcessApiService,
        private readonly router: Router
    ) {

    }

    public completeTask(statementId: number, taskId: string, variables: IAPIProcessObject): Observable<Action> {
        const queryParams = {id: statementId};
        return this.processApiService.completeStatementTask(statementId, taskId, variables).pipe(
            switchMap(async () => {
                await this.router.navigate(["/details"], {queryParams});
                return deleteTaskAction({statementId, taskId});
            })
        );
    }

}