src/app/services/notification-search-sort.service.ts

import { Injectable } from '@angular/core';

import { Notification } from '../model/notification';
import { FilterSelection } from '../model/filter-selection';

@Injectable()
export class NotificationSearchSortService {

  constructor() { }

  private getSortedNotifications(notifications: Notification[]): Notification[] {
    return notifications.sort((a, b) => a.createDate > b.createDate ? 1 : -1);
  }
/*
  private getAllSortedNotifications(): Observable<Notification[]> {
    return this.getSortedNotifications(this.getAllNotifications());
  }
  */

  private searchNotifications(searchInput: string, filterSelection: FilterSelection, notifications: Notification[]): Notification[] {
    return notifications.filter(notification => {
      if ((filterSelection.all || filterSelection.status) && notification.status.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.notificationText) && notification.notificationText.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.freeText) && notification.freeText.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.freeTextExtended) && notification.freeTextExtended.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.responsibilityForwarding) && 
           notification.responsibilityForwarding.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.responsibilityControlPoint) && 
           notification.responsibilityControlPoint.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.creator) && notification.createUser.includes(searchInput)) {
        return true;
      }
      if ((filterSelection.all || filterSelection.clerk) && notification.clerk.includes(searchInput)) {
        return true;
      }
    });
  }

  searchFirstNotifications(notifications: Notification[], searchInput: string, filterSelection: FilterSelection): Notification[] {
    return this.searchNotifications(searchInput, filterSelection, notifications).splice(0, 5);
  }

  searchAllNotifications(notifications: Notification[], searchInput: string, filterSelection: FilterSelection): Notification[] {
    return this.searchNotifications(searchInput, filterSelection, notifications);
  }  

}