import {Injectable} from '@angular/core';
import {HttpClient, HttpErrorResponse} from "@angular/common/http";
import {throwError} from 'rxjs';
import {OrganizationInfo} from '../utils/entities/organizationInfo';



import{EnvProperties} from '../utils/properties/env-properties';
import {map} from "rxjs/operators";
import {ParsingFunctions} from "../landingPages/landing-utils/parsingFunctions.class";
import {properties} from "../../../environments/environment";

@Injectable()
export class OrganizationService {
  public parsingFunctions: ParsingFunctions = new ParsingFunctions();

    constructor(private http: HttpClient ) {}

    organizationInfo: OrganizationInfo;

    getOrganizationInfo (id: string, properties:EnvProperties):any {
         let url = properties.searchAPIURLLAst+'organizations/'+id+'?format=json';
           //'&query=( (oaftype exact organization) and (reldatasourcecompatibilityid=driver or reldatasourcecompatibilityid=driver-openaire2.0 or reldatasourcecompatibilityid=openaire2.0 or reldatasourcecompatibilityid=openaire3.0 or reldatasourcecompatibilityid=openaire4.0 or reldatasourcecompatibilityid=openaire2.0_data or reldatasourcecompatibilityid=hostedBy or relprojectid=*  or reldatasourcecompatibilityid = native)) and ( objIdentifier ='+id+')';

        return this.http.get((properties.useCache)? (properties.cacheUrl +encodeURIComponent(url)): url)
                    //.map(res => <any> res.json())
                    //.pipe(map(res => res['results']))
                    //.pipe(map(res => res['result']['metadata']['oaf:entity']['oaf:organization']))
                    //.map(res => [res, res['rels']['rel']])
                    .pipe(map(res => this.parseOrganizationInfo(res)));


    }

    getOrganizationNameAndUrlById(id: string, properties: EnvProperties): any {
      let url = properties.searchAPIURLLAst+"organizations/"+id+"?format=json";

      return this.http.get((properties.useCache) ? (properties.cacheUrl+encodeURIComponent(url)): url)
                  //.map(res => <any> res.json())
                  // .pipe(map(res => res['result']['metadata']['oaf:entity']['oaf:organization']))
                  .pipe(map(res => this.parseOrganizationNameAndUrl(res)));
    }

    private handleError (error: HttpErrorResponse) {
    // 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 throwError(error  || 'Server error');
    }

  parseOrganizationInfo (data: any):any {
    if(data == null) {
      return null;
    }

    this.organizationInfo = new OrganizationInfo();
    let organization;

    if(data["header"]) {
      this.organizationInfo.relcanId = ParsingFunctions.parseRelCanonicalId(data,"organization");

      this.organizationInfo.objIdentifier = data["header"]["id"];
      if(this.organizationInfo.objIdentifier.startsWith("openorgs____::")) {
        this.organizationInfo.relcanId = this.organizationInfo.objIdentifier;
      }
    }

    if(data["organization"]) {
      organization = data["organization"];
      if (organization["websiteurl"]) {
        this.organizationInfo.title = {"name": organization.legalshortname, "url": organization.websiteurl};
      } else {
        this.organizationInfo.title = {"name": organization.legalshortname, "url": ''};
      }

      this.organizationInfo.name = organization.legalname;

      if (!this.organizationInfo.title.name || this.organizationInfo.title.name == '') {
        this.organizationInfo.title.name = this.organizationInfo.name;
      }

      if (organization["country"]) {
        this.organizationInfo.country = organization['country'].label;
      }
    }

    if(data["pid"]) {
      this.organizationInfo.identifiers = this.parsingFunctions.parseIdentifiers(data['pid']);
    }

    if(data["links"]) {
      let links = data['links'];
      let relLength = Array.isArray(links) ? links.length : 1;

      for(let i=0; i<relLength; i++) {
        let relation = Array.isArray(links) ? links[i] : links;
        if (relation["header"]) {
          // TODO: Check if merges or isMergedIn
          if (relation['header'].relationClass && relation['header'].relationClass.toLowerCase() == "merges" && relation['header'].relatedRecordType == "organization") {
            if(!this.organizationInfo.deletedByInferenceIds) {
              this.organizationInfo.deletedByInferenceIds = [];
            }
            this.organizationInfo.deletedByInferenceIds.push(relation['header'].relatedIdentifier);
            if(!this.organizationInfo.children) {
              this.organizationInfo.children = [];
            }
            this.organizationInfo.children.push(relation);
          }
        }
      }
    }
    return this.organizationInfo;
  }

  parseOrganizationNameAndUrl(res: any): any {
    if(!res || res.organization) {
      return null;
    }
    let organization = res.organization;

    let title: {"name": string, "url": string} = {"name": "", "url": ""};

    if(organization != null) {
      if(organization["websiteurl"]) {
        title = {"name": organization.legalshortname, "url": organization.websiteurl};
      } else {
        title = {"name": organization.legalshortname, "url": ''};
      }

      if(title.name == '') {
        title.name = organization.legalname;
      }
    }

    return title;
  }
}