import {SearchDatasetsService} from '../../services/searchDatasets.service';
import { ErrorCodes} from '../../utils/properties/errorCodes';
import {ErrorMessagesComponent}    from '../../utils/errorMessages.component';
import {SearchCustomFilter, SearchUtilsClass} from '../../searchPages/searchUtils/searchUtils.class';
import {DOI} from '../../utils/string-utils.class';
import {Subject} from 'rxjs';
import{EnvProperties} from '../../utils/properties/env-properties';
import {StringUtils} from '../../utils/string-utils.class';
export class FetchDatasets{
  private errorCodes: ErrorCodes;
  private errorMessages: ErrorMessagesComponent;

  public results =[];
  public requestComplete: Subject<void>;

  public searchUtils:SearchUtilsClass = new SearchUtilsClass();
  private sub: any;
  private subResults: any;

  public csvParams: string;

  constructor ( private _searchDatasetsService: SearchDatasetsService ) {

    this.errorCodes = new ErrorCodes();
    this.errorMessages = new ErrorMessagesComponent();
    this.searchUtils.status = this.errorCodes.LOADING;

    this.requestComplete = new Subject<void>();
  }



  public ngOnDestroy() {
    if(this.sub){
      this.sub.unsubscribe();
    }
    if(this.subResults){
      this.subResults.unsubscribe();
    }
  }


  public getResultsByKeyword(keyword:string,  page: number, size: number, properties:EnvProperties,  customFilter:SearchCustomFilter=null){
    var parameters = "";
    if(keyword.length > 0){
      var DOIs:string[] = DOI.getDOIsFromString(keyword);
      var doisParams = "";

      for(var i =0 ;i < DOIs.length; i++){
        doisParams+=(doisParams.length > 0?"&":"")+'doi="'+ DOIs[i]+'"';
      }
      if(doisParams.length > 0){
        parameters += "&"+doisParams;
      }else{
        parameters = "q=" + StringUtils.URIEncode(keyword);
      }
    }

    //var errorCodes:ErrorCodes = new ErrorCodes();
    this.searchUtils.status = this.errorCodes.LOADING;
    var refineParams = null;
    if(customFilter){
      refineParams = (refineParams?(refineParams+'&'):'')+"&fq="+StringUtils.URIEncode(customFilter.queryFieldName + " exact " + StringUtils.quote((customFilter.valueId )));
    }
    this.subResults = this._searchDatasetsService.searchDatasets(parameters,refineParams, page, size, "", [], properties).subscribe(
        data => {
            this.searchUtils.totalResults = data[0];
            //console.info("search Research Data: [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");
            this.results = data[1];

            //var errorCodes:ErrorCodes = new ErrorCodes();
            this.searchUtils.status = this.errorCodes.DONE;
            if(this.searchUtils.totalResults == 0 ){
              this.searchUtils.status = this.errorCodes.NONE;
            }
         },
        err => {
            /*
            console.log(err);
             //TODO check erros (service not available, bad request)
            // if( ){
            //   this.searchUtils.status = ErrorCodes.ERROR;
            // }
            //var errorCodes:ErrorCodes = new ErrorCodes();
            //this.searchUtils.status = errorCodes.ERROR;
            if(err.status == '404') {
              this.searchUtils.status = this.errorCodes.NOT_FOUND;
            } else if(err.status == '500') {
              this.searchUtils.status = this.errorCodes.ERROR;
            } else {
              this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
            }
            */
            this.handleError("Error getting research data for keyword: "+keyword + (doisParams ? "(DOI)" : ""), err);
            this.searchUtils.status = this.errorMessages.getErrorCode(err.status);
         }
    );
  }

public getNumForEntity(entity:string, id:string, properties:EnvProperties){
    //var errorCodes:ErrorCodes = new ErrorCodes();
    this.searchUtils.status = this.errorCodes.LOADING;


    if(id != "" && entity != "") {
        this._searchDatasetsService.numOfEntityDatasets(id, entity, properties).subscribe(
            data => {
                this.searchUtils.totalResults = data;

                //var errorCodes:ErrorCodes = new ErrorCodes();
                this.searchUtils.status = this.errorCodes.DONE;
                if(this.searchUtils.totalResults == 0 ){
                  this.searchUtils.status = this.errorCodes.NONE;
                }
            },
            err => {
                /*
                console.log(err);
                 //TODO check erros (service not available, bad request)
                // if( ){
                //   this.searchUtils.status = ErrorCodes.ERROR;
                // }
                //var errorCodes:ErrorCodes = new ErrorCodes();
                //this.searchUtils.status = errorCodes.ERROR;
                if(err.status == '404') {
                  this.searchUtils.status = this.errorCodes.NOT_FOUND;
                } else if(err.status == '500') {
                  this.searchUtils.status = this.errorCodes.ERROR;
                } else {
                  this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
                }
                */
                this.handleError("Error getting research data for "+entity+" with id: "+id, err);
                this.searchUtils.status = this.errorMessages.getErrorCode(err.status);
            }
        );
    }
}

public getResultsForEntity(entity:string, id:string, page: number, size: number, properties:EnvProperties){
    //var errorCodes:ErrorCodes = new ErrorCodes();
    this.searchUtils.status = this.errorCodes.LOADING;

  var parameters = "";

  if(entity == "project") {
    parameters = "projects/"+id;
  } else if(entity == "organization") {
    parameters = "organizations/"+id;
  }

  if(parameters != "") {

      this._searchDatasetsService.searchDatasetsForEntity(parameters, page, size, properties).subscribe(
          data => {
              this.searchUtils.totalResults = data[0];
              //console.info("search Research Data for "+entity+": [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");
              this.results = data[1];

              //var errorCodes:ErrorCodes = new ErrorCodes();
              this.searchUtils.status = this.errorCodes.DONE;
              if(this.searchUtils.totalResults == 0 ){
                this.searchUtils.status = this.errorCodes.NONE;
              }
          },
          err => {
              /*
              console.log(err);
               //TODO check erros (service not available, bad request)
              // if( ){
              //   this.searchUtils.status = ErrorCodes.ERROR;
              // }
              //var errorCodes:ErrorCodes = new ErrorCodes();
              //this.searchUtils.status = errorCodes.ERROR;
              if(err.status == '404') {
                this.searchUtils.status = this.errorCodes.NOT_FOUND;
              } else if(err.status == '500') {
                this.searchUtils.status = this.errorCodes.ERROR;
              } else {
                this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
              }
              */
              this.handleError("Error getting research data for "+entity+" with id: "+id, err);
              this.searchUtils.status = this.errorMessages.getErrorCode(err.status);
          }
      );
  }
}

public getResultsForDataproviders(id:string, resultsFrom:string, page: number, size: number, properties:EnvProperties){
    //var errorCodes:ErrorCodes = new ErrorCodes();
    this.searchUtils.status = this.errorCodes.LOADING;

  var parameters;
  if(resultsFrom == "collectedFrom") {
      parameters = "datasets?fq=collectedfromdatasourceid exact "+'"'+id+'"';
  } else if(resultsFrom == "hostedBy") {
      parameters = "datasets?fq=resulthostingdatasourceid exact "+'"'+id+'"';
  }

  if(parameters != "") {

      this._searchDatasetsService.searchDatasetsForDataproviders(parameters, page, size, properties).subscribe(
          data => {
              this.searchUtils.totalResults = data[0];
              //console.info("search Research Data for Dataproviders: [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");
              this.results = data[1];

              //var errorCodes:ErrorCodes = new ErrorCodes();
              this.searchUtils.status = this.errorCodes.DONE;
              if(this.searchUtils.totalResults == 0 ){
                this.searchUtils.status = this.errorCodes.NONE;
              }
          },
          err => {
              /*
              console.log(err);
               //TODO check erros (service not available, bad request)
              // if( ){
              //   this.searchUtils.status = ErrorCodes.ERROR;
              // }
              //var errorCodes:ErrorCodes = new ErrorCodes();
              //this.searchUtils.status = errorCodes.ERROR;
              if(err.status == '404') {
                this.searchUtils.status = this.errorCodes.NOT_FOUND;
              } else if(err.status == '500') {
                this.searchUtils.status = this.errorCodes.ERROR;
              } else {
                this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
              }*/
              this.handleError("Error getting research data for content provider ("+resultsFrom+") with id: "+id, err);
              this.searchUtils.status = this.errorMessages.getErrorCode(err.status);
          }
      );
  }
}

public getAggregatorResults(id:string, page: number, size: number, properties:EnvProperties){
  //var errorCodes:ErrorCodes = new ErrorCodes();
  this.searchUtils.status = this.errorCodes.LOADING;

  this.subResults = this._searchDatasetsService.searchAggregators(id, '&fq=collectedfromdatasourceid exact "'+id+'"',"&refine=true&fields=resulthostingdatasource" , page, size, properties).subscribe(
      data => {
          this.results = data;
          this.searchUtils.totalResults = this.results.length;

          //var errorCodes:ErrorCodes = new ErrorCodes();
          this.searchUtils.status = this.errorCodes.DONE;
          if(this.searchUtils.totalResults == 0 ){
            this.searchUtils.status = this.errorCodes.NONE;
          }

          this.requestComplete.complete();
      },
      err => {
          /*
          console.log(err);
          //console.info("status: "+err.status);
           //TODO check erros (service not available, bad request)
          // if( ){
          //   this.searchUtils.status = ErrorCodes.ERROR;
          // }
          //var errorCodes:ErrorCodes = new ErrorCodes();
          //this.searchUtils.status = errorCodes.ERROR;
          if(err.status == '404') {
            this.searchUtils.status = this.errorCodes.NOT_FOUND;
          } else if(err.status == '500') {
            this.searchUtils.status = this.errorCodes.ERROR;
          } else {
            this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
          }*/
          this.handleError("Error getting research data for aggregator with id: "+id, err);
          this.searchUtils.status = this.errorMessages.getErrorCode(err.status);

          this.requestComplete.complete();
      }
  );
}

  private handleError(message: string, error) {
    console.error("Fetch Research Data (class): "+message, error);
  }
}