D-Net

/*

* Created by myrto on 12/05/2017

*/

/*

*  !!! USING TEMPORARY API ADDRESS AND USER

*/

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

import { Observable } from 'rxjs/Observable';

import 'rxjs/add/operator/map';

import { Http, Response, Headers, RequestOptions } from '@angular/http';

import {

  AdvQueryObject, BrowseEntry, EventsPage, OpenaireSubscription, Repository, SimpleSubscriptionDesc, Subscription,

  Term

} from '../domain/typeScriptClasses';

import { apiUrl } from '../domain/tempAPI';

let headers = new Headers({ 'Content-Type': 'application/json' });

let httpOptions = new RequestOptions({ headers: headers });

@Injectable ()

export class BrokerService {

  private apiUrl = apiUrl + '/broker/';

  constructor(private http: Http) { }

  advancedShowEvents(page: number,searchParams: AdvQueryObject): Observable<EventsPage>{

    let url = `${this.apiUrl}advancedShowEvents/${page}/10`;

    console.log(`knocking on: ${url}`);

    let body = searchParams;

    console.log(`sending ${JSON.stringify(body)}`);

    httpOptions.withCredentials = true;

    return this.http.post(url,body,httpOptions)

      .map( res => <EventsPage>res.json())

      .catch(this.handleError).share();

  }

  getDatasourcesOfUser(userEmail: string): Observable<Repository[]> {

    let url = `${this.apiUrl}getDatasourcesOfUser?user=${userEmail}&includeShared=true&includeByOthers=true`;

    console.log(`knocking on: ${url}`);

    httpOptions.withCredentials = true;

    return this.http.post(url,httpOptions)

      .map( res => <Repository[]>res.json())

      .catch(this.handleError).share();

  }

  getDnetTopics(): Observable<Map<string,Term>> {

    let url = `${this.apiUrl}getDnetTopics`;

    console.log(`knocking on: ${url}`);

    return this.http.get(url)

      .map( res => <Map<string,Term>>res.json())

      .catch(this.handleError);

  }

  getNotificationsBySubscriptionId(subId: string, page: number): Observable<EventsPage> {

    let url = `${this.apiUrl}getNotificationsBySubscriptionId/${subId}/${page}/100`;

    console.log(`knocking on: ${url}`);

    return this.http.get(url)

      .map( res => <EventsPage>res.json())

      .catch(this.handleError);

  }

  getSimpleSubscriptionsOfUser(userEmail: string): Observable<Map<string,SimpleSubscriptionDesc>> {

    let url = `${this.apiUrl}getSimpleSubscriptionsOfUser/${userEmail}`;

    console.log(`knocking on: ${url}`);

    return this.http.get(url)

      .map( res => <Map<string,SimpleSubscriptionDesc>>res.json())

      .catch(this.handleError);

  }

  getSubscription(subId: string): Observable<Subscription> {

    let url = `${this.apiUrl}getSubscription/${subId}`;

    console.log(`knocking on: ${url}`);

    return this.http.get(url)

      .map( res => <Subscription>res.json())

      .catch(this.handleError);

  }

/*

  NOT WORKING AND PROBABLY NOT NEEDED

  getSubscriptionsOfUser(userEmail): Observable<Subscription[]> {}

*/

  getTopicsForDataSource(name: string): Observable<BrowseEntry[]> {

    let url = `${this.apiUrl}getTopicsForDatasource/${name}`;

    console.log(`knocking on: ${url}`);

    return this.http.get(url)

      .map( res => <BrowseEntry[]>res.json())

      .catch(this.handleError);

  }

/* NOT WORKING AND PROBABLY NOT NEEDED

  showEvents(repoName: string, topic: string, page: number): Observable<EventsPage> {

    let url = `${this.apiUrl}showEvents/{datasourceName}/{topic}/{page}?datasourceName=${repoName}&topic=${topic}&page=${page}`;

    console.log(`knocking on: ${url}`);

    return this.http.get(url)

      .map( res => <EventsPage>res.json())

      .catch(this.handleError);

  }

*/

  /*CHECK IF sub is sent as body*/

  subscribeToEvent(sub: OpenaireSubscription): Observable<string>{

    let url = `${this.apiUrl}subscribe`;

    console.log(`knocking on: ${url}`);

    let body = JSON.stringify(sub);

    httpOptions.withCredentials = true;

    return this.http.post(url,body,httpOptions)

      .map( res => res.json())

      .catch(this.handleError);

  }

  unsubscribe(subscriptionId: string): Observable<string> {

    let url = `${this.apiUrl}unsubscribe/${subscriptionId}`;

    console.log(`knocking on: ${url}`);

    httpOptions.withCredentials = true;

    return this.http.post(url,httpOptions)

      .map( res => res.status.toString())

      .catch(this.handleError);

}

private handleError(error: Response | any) {

    // In a real world app, we might use a remote logging infrastructure

    // We'd also dig deeper into the error to get a better message

    let errMsg = "";

    console.log('E R R O R !!!');

    console.log(error);

    if (error instanceof Response) {

      const body = error.text() || '';

      //const err = body.error || JSON.stringify(body);

      errMsg = `${error.status} - ${error.statusText || ''} ${body}`;

      console.log(errMsg);

    } else {

      errMsg = (error.message) ? error.message :

        error.status ? `${error.status} - ${error.statusText}` : 'Server error';

      console.error(errMsg); // log to console instead

    }

    return Observable.throw(errMsg);

  }

}