D-Net

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

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

import {Observable}     from 'rxjs/Observable';

import {DatasetInfo} from '../../utils/entities/datasetInfo';

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

import 'rxjs/add/observable/of';

import 'rxjs/add/operator/do';

import 'rxjs/add/operator/share';

import { ParsingFunctions } from '../landing-utils/parsingFunctions.class';

@Injectable()

export class DatasetService {

  constructor(private http: Http ) {

    this.parsingFunctions = new ParsingFunctions();

  }

  public parsingFunctions: ParsingFunctions;

  datasetInfo: DatasetInfo;

  getDatasetInfo (id: string):any {

    console.info("getDatasetInfo in service");

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

    let key = url;

    return this.http.get((OpenaireProperties.isCacheEnabled())? (OpenaireProperties.getCacheUrl()+encodeURIComponent(url)): url)

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

                    .do(res => console.info(res['result']['metadata']['oaf:entity']))

                    .map(res => [res['result']['header']['dri:status'], res['result']['metadata']['oaf:entity']['oaf:result']])

                    .map(res => [res[1],

                                 res[1]['title'],

                                 res[1]['rels']['rel'],

                                 res[1]['children'],

                                 res[1]['pid'],

                                 res[1]['subject'],

                                 res[1]['bestaccessright'],

                                 res[1]['collectedfrom'],

                                 res[1]['context'],

                                 //res[1]['resulttype'],

                                 res[0],

                                 res[1]['creator']

                    ]).map(res => this.parseDatasetInfo(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');

  }

  parseDatasetInfo (data: any):any {

    this.datasetInfo = new DatasetInfo();

    if(data[0] != null) {

      var date:string = (data[0].dateofacceptance)+""; // transform to string in case it is an integer

      this.datasetInfo.date  = (date && (date).indexOf('-') !== -1)?date.split('-')[0]:date;

      this.datasetInfo.dateofacceptance = data[0].dateofacceptance;

      this.datasetInfo.publisher = data[0].publisher;

      if(!Array.isArray(data[0].description)) {

        this.datasetInfo.description = data[0].description;

      } else {

        this.datasetInfo.description = data[0].description[0];

      }

      this.datasetInfo.embargoEndDate = data[0].embargoenddate;

    }

    this.datasetInfo.title = {"name": "", "url": "", "accessMode": ""};

    if(data[0]['bestaccessright'].hasOwnProperty("classid")) {

      this.datasetInfo.title.accessMode = data[0]['bestaccessright'].classid;

    }

    if(data[1] != null) {

      if(Array.isArray(data[1])) {

        this.datasetInfo.title['name'] = data[1][0].content;

      } else {

        this.datasetInfo.title['name'] = data[1].content;

      }

    }

    if(data[2] != null) {

      let relation;

      let length = data[2].length!=undefined ? data[2].length : 1;

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

        relation = data[2].length!=undefined ? data[2][i] : data[2];

        if(relation.hasOwnProperty("to")) {

          if(relation['to'].class == "isProducedBy") {

            this.datasetInfo.fundedByProjects = this.parsingFunctions.parseFundingByProjects(this.datasetInfo.fundedByProjects, relation, this.datasetInfo.projectsProvenanceVocabulary);

          } else if(relation['to'].class == "isRelatedTo") {

            let provenanceAction: string;

            if(relation.provenanceaction in this.datasetInfo.researchResultsProvenanceVocabulary) {

              provenanceAction = this.datasetInfo.researchResultsProvenanceVocabulary[relation.provenanceaction];

            } else {

              provenanceAction = "Other"

            }

            this.datasetInfo.relatedResearchResults = this.parsingFunctions.parseRelatedResearchResults(this.datasetInfo.relatedResearchResults, relation, provenanceAction);

          } else if(relation['to'].class == "hasAmongTopNSimilarDocuments") {

            this.datasetInfo.similarResearchResults = this.parsingFunctions.parseSimilarResearchResults(this.datasetInfo.similarResearchResults, relation);

          }

        }

      }

    }

    if(data[3] != null) {

      if(data[3].hasOwnProperty("instance")) {

        this.datasetInfo.downloadFrom = new Map<string, {"url": string[], "accessMode": string[], "bestAccessMode": string}>();

        this.datasetInfo.publishedIn = new Map<string, {"url": string[], "accessMode": string[], "bestAccessMode": string}>()

        this.datasetInfo.types = new Array<string>();

        let types = new Set<string>();

        let counter = 0;

        let instance;

        let length = data[3]['instance'].length!=undefined ? data[3]['instance'].length : 1;

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

          instance = data[3]['instance'].length!=undefined ? data[3]['instance'][i] : data[3]['instance'];

          this.parsingFunctions.parseTypes(this.datasetInfo.types, types, instance);

          if(instance.hasOwnProperty("webresource")) {

            let url;

            if(instance['webresource'].length == undefined) {

              url = instance['webresource'].url;

            } else{

              url = instance['webresource'][0].url;

            }

            if(instance.hasOwnProperty("collectedfrom")) {

              this.datasetInfo.collectedFrom = this.parsingFunctions.parseCollectedFrom(instance['collectedfrom']);

            }

            if(instance.hasOwnProperty("hostedby")) {

              if(instance['hostedby'].name != "other resources" && instance['hostedby'].name != "Unknown Repository") {

                this.parsingFunctions.parseDownloadFrom(this.datasetInfo.downloadFrom, instance, url);

              } else {

                counter = this.parsingFunctions.parsePublishedIn(this.datasetInfo.publishedIn, instance, data[0], url, counter);

              }

              if(this.datasetInfo.title != undefined) {

                if(!this.datasetInfo.title['url']) {

                  this.datasetInfo.title['url'] = url;

                }

                if(this.parsingFunctions.changeBestAccessMode(this.datasetInfo.title['accessMode'], instance['licence'])) {

                  this.datasetInfo.title['accessMode'] = instance['licence'].classid;

                  this.datasetInfo.title['url'] = url;

                }

              }

            }

          }

        }

      }

    }

    if(data[4] != null) {

      this.datasetInfo.identifiers = this.parsingFunctions.parseIdentifiers(data[4]);

    }

    if(data[5] != null) {

      let subjectResults: [string[], Map<string, string[]>, Map<string, string[]>] = this.parsingFunctions.parseAllSubjects(data[5]);

      this.datasetInfo.subjects = subjectResults[0];

      this.datasetInfo.otherSubjects = subjectResults[1];

      this.datasetInfo.classifiedSubjects = subjectResults[2];

    }

    // if(data[6] != null) {

    //     this.datasetInfo.bestaccessright = data[6].classid;

    // }

    // if(data[7] != null) {

    //   this.datasetInfo.collectedFrom = this.parsingFunctions.parseCollectedFrom(data[7]);

    // }

    // null argument is for journal

    this.datasetInfo.downloadFrom = this.parsingFunctions.addPublisherToDownloadFrom(

                this.datasetInfo.downloadFrom, this.datasetInfo.publisher,

                null, this.datasetInfo.identifiers, this.datasetInfo.title);

    if(data[8] != null) {

      this.datasetInfo.contexts = this.parsingFunctions.parseContexts(data[8]);

    }

    // if(data[9] != null && this.datasetInfo.type == undefined) {

    //   if(data[9].hasOwnProperty('classname')) {

    //     this.datasetInfo.type = data[9].classname;

    //   }

    // }

    if(data[9] != null && data[9] == "under curation") {

      this.datasetInfo.underCurationMessage = true;

    } else {

      this.datasetInfo.underCurationMessage = false;

    }

    if(data[10] != null) {

      if(this.datasetInfo.authors == undefined) {

        this.datasetInfo.authors = new Array<string>();

      }

      let authors = data[10];

      let length = Array.isArray(authors) ? authors.length : 1;

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

        let author = Array.isArray(authors) ? authors[i] : authors;

        this.datasetInfo.authors[author.rank-1] = author.content;

      }

      this.datasetInfo.authors = this.datasetInfo.authors.filter(function (item) {

        return (item != undefined);

      });

    }

    return this.datasetInfo;

  }

}