import {Injectable} from '@angular/core';
import {URLSearchParams} from '@angular/http';
import {Http, Response} from '@angular/http';
import { Headers, RequestOptions } from '@angular/http';
import {Observable}     from 'rxjs/Observable';
import{EnvProperties} from '../../../utils/properties/env-properties';
import 'rxjs/add/observable/of';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/share';

@Injectable()
export class SearchOrcidService {
  constructor( private http: Http ) {}


  searchOrcidAuthor (term: string, authorIds: string[],
      authorGivenNames: string[], authorFamilyNames: string[], properties:EnvProperties):any {
    console.info("In searchOrcidAuthor: "+term);

    var headers = new Headers();
    headers.append('Accept', 'application/orcid+json');

    let url = properties.searchOrcidURL + term+'/orcid-bio';
    let key = url;

    return this.http.get(url, { headers: headers })
                .map(res => res.json()['orcid-profile'])
                .map(res => [res['orcid-bio']['personal-details']['given-names'],
                             res['orcid-bio']['personal-details']['family-name'],
                             res['orcid-identifier']])
                .map(res => this.parseOrcidAuthor(res, authorIds, authorGivenNames, authorFamilyNames));
    }

  searchOrcidAuthors (term: string, authorIds: string[],
      authorGivenNames: string[], authorFamilyNames: string[], properties:EnvProperties):any {
    console.info("In search Orcid authors for keyword: "+term);

    var headers = new Headers();
    headers.append('Accept', 'application/orcid+json');

    let url = properties.searchOrcidURL+'search/orcid-bio?defType=edismax&q='+term+'&qf=given-name^1.0+family-name^2.0+other-names^1.0+credit-name^1.0&start=0&rows=10';
    let key = url;

    return this.http.get(url, { headers: headers })
      .map(res => res.json()['orcid-search-results']['orcid-search-result'])
      .map(res => this.parseOrcidAuthors(res, authorIds, authorGivenNames, authorFamilyNames));

    }

    searchOrcidPublications (id: string, properties:EnvProperties):any {
      console.info("In search Orcid publications for author: "+id);

      var headers = new Headers();
      headers.append('Accept', 'application/orcid+json');

      let url =properties.searchOrcidURL+id+'/orcid-works';
      let key = url;

      return this.http.get(url, { headers: headers })
        .map(res => res.json()['orcid-profile']['orcid-activities']['orcid-works']);
        //.map(res => res['orcid-work']);
      }


      parseOrcidAuthor (data: any, authorIds: string[],
          authorGivenNames: string[], authorFamilyNames: string[]):any {

              if(data[2] != null) {
                  authorIds.push(data[2].path);

                  if(data[0] != null) {
                    authorGivenNames.push(data[0].value);
                  } else {
                    authorGivenNames.push("");
                  }
                  if(data[1] != null) {
                    authorFamilyNames.push(data[1].value);
                  } else {
                    authorFamilyNames.push("");
                  }

                  return true;
              }

              return false;
      }

      parseOrcidAuthors (data: any, authorIds: string[],
          authorGivenNames: string[], authorFamilyNames: string[]):any {
              let ret: boolean = false;
              let mydata: any;
              let length: number;

              if(data != null) {
                  length = data.length!=undefined ? data.length : 1;

                  for(let i=0; i<length; i++) {
                      mydata = data.length!=undefined  ? data[i] : data;

                      if(mydata.hasOwnProperty("orcid-profile")) {
                           if(mydata['orcid-profile'].hasOwnProperty("orcid-identifier")) {
                               authorIds.push(mydata['orcid-profile']['orcid-identifier'].path);

                               if(mydata['orcid-profile'].hasOwnProperty("orcid-bio")) {
                                   if(mydata['orcid-profile']['orcid-bio'].hasOwnProperty("personal-details")) {
                                       if(mydata['orcid-profile']['orcid-bio']['personal-details'].hasOwnProperty("given-names")) {
                                           authorGivenNames.push(mydata['orcid-profile']['orcid-bio']['personal-details']['given-names'].value);
                                       } else {
                                           authorGivenNames.push("");
                                       }

                                       if(mydata['orcid-profile']['orcid-bio']['personal-details'].hasOwnProperty("family-name")) {
                                           authorFamilyNames.push(mydata['orcid-profile']['orcid-bio']['personal-details']['family-name'].value);
                                       } else {
                                           authorFamilyNames.push("");
                                       }
                                   }
                               }
                               ret = true;
                           }
                      }
                  }
              }
              return ret;
      }
}