argos/dmp-backend/web/src/main/java/eu/eudat/controllers/TagController.java

package eu.eudat.controllers;

import eu.eudat.elastic.criteria.DatasetCriteria;
import eu.eudat.elastic.criteria.TagCriteria;
import eu.eudat.elastic.entities.Dataset;
import eu.eudat.elastic.entities.Tag;
import eu.eudat.elastic.repository.Repository;
import eu.eudat.logic.proxy.config.exceptions.HugeResultSet;
import eu.eudat.logic.proxy.config.exceptions.NoURLFound;
import eu.eudat.logic.services.ApiContext;
import eu.eudat.models.data.helpers.responses.ResponseItem;
import eu.eudat.types.ApiMessageCode;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.stream.Collectors;

/**
 * Created by ikalyvas on 7/5/2018.
 */
@RestController
@CrossOrigin
@RequestMapping(value = {"/api"})
public class TagController extends BaseController {

    private Repository<Dataset, TagCriteria> datasetRepository;
    private Environment environment;

    @Autowired
    public TagController(ApiContext apiContext, Repository tagRepository, Environment environment) {
        super(apiContext);
        this.datasetRepository = tagRepository;
        this.environment = environment;
    }

    @RequestMapping(method = RequestMethod.GET, value = {"/external/tags"}, produces = "application/json")
    public @ResponseBody
    ResponseEntity<ResponseItem<List<Tag>>> listExternalTagModel(
            @RequestParam(value = "query", required = false) String query, @RequestParam(value = "type", required = false) String type) throws HugeResultSet, NoURLFound, IOException, ExecutionException, InterruptedException {
        //ExternalUrlCriteria externalUrlCriteria = new ExternalUrlCriteria(query);
        /*List<Map<String, String>> remoteRepos = this.getApiContext().getOperationsContext().getRemoteFetcher().getTags(externalUrlCriteria, type);
        TagExternalSourcesModel researchersExternalSourcesModel = new TagExternalSourcesModel().fromExternalItem(remoteRepos);*/
        List<Tag> tags = this.getApiContext().getOperationsContext().getDatasetRepository().query(new DatasetCriteria()).stream().map(Dataset::getTags).flatMap(Collection::stream).collect(Collectors.toList());

        return ResponseEntity.status(HttpStatus.OK).body(new ResponseItem<List<Tag>>().payload(tags).status(ApiMessageCode.NO_MESSAGE));
    }
}