/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import {Injectable} from '@angular/core';
import {Actions, Effect} from '@ngrx/effects';
import {Observable} from 'rxjs/Observable';
import {Action} from '@ngrx/store';
import {of} from 'rxjs/observable/of';
import * as caseActions from '../case.actions';
import {PortfolioService} from '../../../../services/portfolio/portfolio.service';
import {Product} from '../../../../services/portfolio/domain/product.model';

@Injectable()
export class CaseApiEffects {

  @Effect()
  search$: Observable<Action> = this.actions$
    .ofType(caseActions.SEARCH)
    .debounceTime(300)
    .map((action: caseActions.SearchAction) => action.payload)
    .switchMap(payload => {
      const nextSearch$ = this.actions$.ofType(caseActions.SEARCH).skip(1);

      return this.portfolioService.getAllCasesForCustomer(payload.customerId, payload.fetchRequest)
        .takeUntil(nextSearch$)
        .map(fimsCasePage => new caseActions.SearchCompleteAction(fimsCasePage))
        .catch(() => of(new caseActions.SearchCompleteAction({
          totalElements: 0,
          totalPages: 0,
          elements: []
        })));
    });

  @Effect()
  createCase$: Observable<Action> = this.actions$
    .ofType(caseActions.CREATE)
    .map((action: caseActions.CreateCaseAction) => action.payload)
    .mergeMap(payload =>
      this.portfolioService.createCase(payload.productId, payload.caseInstance)
        .map(() => new caseActions.CreateCaseSuccessAction({
          resource: payload.caseInstance,
          activatedRoute: payload.activatedRoute
        }))
        .catch((error) => of(new caseActions.CreateCaseFailAction(error)))
    );


  @Effect()
  updateCase$: Observable<Action> = this.actions$
    .ofType(caseActions.UPDATE)
    .map((action: caseActions.UpdateCaseAction) => action.payload)
    .mergeMap(payload =>
        this.portfolioService.changeCase(payload.productId, payload.caseInstance)
          .map(() => new caseActions.UpdateCaseSuccessAction({
            resource: payload.caseInstance,
            activatedRoute: payload.activatedRoute
          }))
          .catch((error) => of(new caseActions.UpdateCaseFailAction(error)))
    );

  @Effect()
  loadProduct$: Observable<Action> = this.actions$
    .ofType(caseActions.LOAD_PRODUCT)
    .map((action: caseActions.LoadProductAction) => action.payload)
    .mergeMap(productId =>
      this.portfolioService.getProduct(productId)
        .map((product: Product) => new caseActions.LoadProductSuccessAction(product))
        .catch((error) => of(new caseActions.LoadProductFailAction(error)))
    );

  @Effect()
  executeCommand$: Observable<Action> = this.actions$
    .ofType(caseActions.EXECUTE_COMMAND)
    .map((action: caseActions.ExecuteCommandAction) => action.payload)
    .mergeMap(payload =>
      this.portfolioService.executeCaseCommand(payload.productId, payload.caseId, payload.action, payload.command)
        .map(() => new caseActions.ExecuteCommandSuccessAction(payload))
        .catch((error) => of(new caseActions.ExecuteCommandFailAction(error)))
    );

  constructor(private actions$: Actions, private portfolioService: PortfolioService) { }

}