import { Component, OnInit } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { ParseXmlService } from '../services/parse-xml.service';
import { FormControl, FormGroup } from '@angular/forms';


@Component({
  selector: 'app-search',
  templateUrl: './search.component.html',
  styleUrls: ['./search.component.scss']
})



export class SearchComponent implements OnInit {


  public xmlItems: string[][] = []; 

  Form = new FormGroup({
    keyword: new FormControl()
});

  constructor(
    private http: HttpClient,
    private parserService: ParseXmlService
  ) { }

  ngOnInit(): void {
  }

  simpleSearch(){
     //effectuer une recherche plein text en SPARL sur la BDD Blazegraph
     //curl -X POST -H 'Accept: application/rdf+xml' -i 'http://10.6.10.9:8888/blazegraph/sparql' --data 'query=SELECT * where {?s a <http://www.w3.org/ns/dcat#Dataset> }'

     let query: string;
//     query ='query=SELECT * where {?s a <http://www.w3.org/ns/dcat#Dataset> }'
     


query= 
'query=PREFIX dcat: <http://www.w3.org/ns/dcat#>\n\
PREFIX dcterms: <http://purl.org/dc/terms/>\n\
SELECT  ?title ?description ?uri \n\
where {\n\
?dataset a dcat:Dataset ;\n\
dcterms:title ?title ;\n\
dcterms:description ?description; \n\
dcat:keyword ?uri ; \n\
FILTER (contains( ?description, "'+ this.Form.value.keyword +'") || contains( ?title, "'+ this.Form.value.keyword +'"))\n\
.\n\
}'


      this.parserService.getXmlResult("http://10.6.10.9:8888/blazegraph/sparql",query).subscribe(
        data=>{
          if (data){
            data.results.bindings.forEach(element => {
              this.xmlItems.push(element);
            });
          }
        })
      return null;
  }


  isXmlItemsEmpty(){
    return this.xmlItems.length === 0;
  } 

}