D-Net

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

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

import {Observable}     from 'rxjs/Observable';

import {Metrics} from '../utils/entities/metrics';

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

import 'rxjs/add/operator/do';

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

@Injectable()

export class MetricsService {

    metrics: Metrics;

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

    getMetrics (id: string, entity: string):any {

        console.info("getPublicationViews in service");

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

        let url = OpenaireProperties.getMetricsAPIURL()+entity+"/"+id+"/clicks";

        let key = url;

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

          return Observable.of(this._cache.get(key));

        }

        return this.http.get(url)

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

                    .map(res => this.parseMetrics(res["downloads"], res["views"], res["total_downloads"], res["total_views"]))

                    .do(res => {

                      this._cache.set(key, res);

                    });

    }

    parseMetrics(downloads: string, views: string, totalDownloads: any, totalViews: any): any {

        this.metrics = new Metrics();

        this.metrics.totalDownloads = totalDownloads;

        this.metrics.totalViews = totalViews;

        this.metrics.infos = new Map<string, {"name": string, "url": string, "numOfDownloads": string, "numOfViews": string}>();

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

            let id: string = downloads[i]['datasource_id'];

            if(this.metrics.infos.has(id)) {

                this.metrics.infos.get(id).numOfDownloads = downloads[i]['value'];

            } else {

                let info;//: {"url": string, "numOfDownloads": string, "numOfViews": string};

                info = {};

                info.name = downloads[i]['datasource_name'];

                info.url = OpenaireProperties.getsearchLinkToDataProvider()+id;

                info.numOfDownloads = downloads[i]['value'];

                info.numOfViews = "0";

                this.metrics.infos.set(id, info);

            }

        }

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

            let id: string = views[i]['datasource_id'];

            if(this.metrics.infos.has(id)) {

                this.metrics.infos.get(id).numOfViews = views[i]['value'];

            } else {

                let info;//: {"url": string, "numOfDownloads": string, "numOfViews": string};

                info = {};

                info.name = views[i]['datasource_name'];

                info.url = OpenaireProperties.getsearchLinkToDataProvider()+id;

                info.numOfDownloads = "0";

                info.numOfViews = views[i]['value'];

                this.metrics.infos.set(id, info);

            }

        }

        console.info(this.metrics.infos.size);

        return this.metrics;

    }

}