D-Net

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

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

import {Observable}     from 'rxjs/Observable';

import 'rxjs/add/observable/of';

import 'rxjs/add/operator/do';

import 'rxjs/add/operator/share';

import { CacheService  } from '../../shared/cache.service';

import {PersonInfo} from '../../utils/entities/personInfo';

import {OpenaireProperties} from '../../utils/properties/openaireProperties'

export function hashCodeString(str: string): string {

  let hash = 0;

  if (str.length === 0) {

    return hash + '';

  }

  for (let i = 0; i < str.length; i++) {

    let char = str.charCodeAt(i);

    hash = ((hash << 5) - hash) + char;

    hash = hash & hash; // Convert to 32bit integer

  }

  return hash + '';

}

@Injectable()

export class PersonService {

    constructor(private http: Http, public _cache: CacheService) {}

    personInfo: PersonInfo;

    getPersonInfo (id: string):any {

        console.info("getPersonInfo in service");

        let url = OpenaireProperties. getSearchAPIURLLast()+'people/'+id+"?format=json";

        let key = url;

        if (this._cache.has(key)) {

          return Observable.of(this._cache.get(key)).map(res => this.parsePersonInfo(res));

        }

        return this.http.get(url)

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

                    .map(res => res['result']['metadata']['oaf:entity']['oaf:person'])

                    .do(res => {

                      this._cache.set(key, res);

                    })

                    .map(res => this.parsePersonInfo(res));

    }

    private handleError (error: Response) {

    // in a real world app, we may send the error to some remote logging infrastructure

    // instead of just logging it to the console

        console.log(error);

        return Observable.throw(error  || 'Server error');

    }

    parsePersonInfo (data: any):any {

        console.info("parsePersonInfo");

        this.personInfo = new PersonInfo();

        if(data != null) {

            if(data.hasOwnProperty('firstname')) {

                this.personInfo.firstname = data.firstname;

            }

            if(data.hasOwnProperty('secondnames')) {

                this.personInfo.secondnames = data.secondnames;

            }

            if(data.hasOwnProperty('fullname')) {

                this.personInfo.fullname = data.fullname;

            }

        }

        return this.personInfo;

    }

}