package eu.dnetlib.repo.manager.service;

import eu.dnetlib.domain.data.Repository;
import eu.dnetlib.repo.manager.domain.RepositorySummaryInfo;
import eu.dnetlib.repo.manager.shared.AggregationDetails;
import eu.dnetlib.repo.manager.shared.BrokerException;
import eu.dnetlib.repo.manager.shared.MetricsInfo;
import eu.dnetlib.repo.manager.shared.RepositoryServiceException;
import eu.dnetlib.repo.manager.shared.broker.BrowseEntry;
import org.apache.log4j.Logger;
import org.json.JSONException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import javax.xml.ws.ServiceMode;
import java.util.ArrayList;
import java.util.List;

@Service("dashboardService")
public class DashboardServiceImpl implements DashboardService {

    private static final Logger logger = Logger.getLogger(DashboardServiceImpl.class);

    @Autowired
    private EmailUtils emailUtils;

    @Autowired
    private RepositoryService repositoryService;

    @Autowired
    private BrokerService brokerService;

    @Override
    public List<RepositorySummaryInfo> getRepositoriesSummaryInfo(@PathVariable("userEmail") String userEmail,
                                                                  @PathVariable("page") String page,
                                                                  @PathVariable("size") String size) throws JSONException {

        List<RepositorySummaryInfo> repositorySummaryInfoList = new ArrayList<>();

try {

        List<Repository> repositoriesOfUser = repositoryService.getRepositoriesOfUser(userEmail, page, size);
        for(Repository repository: repositoriesOfUser) {

            RepositorySummaryInfo repositorySummaryInfo = new RepositorySummaryInfo();
            repositorySummaryInfo.setId(repository.getId());
            repositorySummaryInfo.setRepositoryName(repository.getOfficialName());
            repositorySummaryInfo.setLogoURL(repository.getLogoUrl());

            //TODO getRepositoryAggregations returns only the 20 more recent items. Is it positive that we will find an indexed version there?
            List<AggregationDetails> aggregationDetailsList = repositoryService.getRepositoryAggregations(repository.getId());
            for(AggregationDetails aggregationDetails: aggregationDetailsList) {
                if(aggregationDetails.getIndexedVersion()) {
                    repositorySummaryInfo.setRecordsCollected(aggregationDetails.getNumberOfRecords());
                    repositorySummaryInfo.setLastIndexedVersion(aggregationDetails.getDate());
                    break;
                }
            }

            try {

                MetricsInfo metricsInfo = repositoryService.getMetricsInfoForRepository(repository.getId());
                repositorySummaryInfo.setTotalDownloads(metricsInfo.getMetricsNumbers().getTotalDownloads());
                repositorySummaryInfo.setTotalViews(metricsInfo.getMetricsNumbers().getTotalViews());

            } catch (RepositoryServiceException e) {
                logger.error("Exception getting metrics info for repository: " + repository.getId(), e);
            }

            try {

                List<BrowseEntry> events = brokerService.getTopicsForDatasource(repository.getOfficialName());
                Long totalEvents = 0L;
                for(BrowseEntry browseEntry: events)
                    totalEvents += browseEntry.getSize();
                repositorySummaryInfo.setEnrichmentEvents(totalEvents);


            } catch (BrokerException e) {
                logger.error("Exception getting broker events for repository: " + repository.getId(), e);
            }

            repositorySummaryInfoList.add(repositorySummaryInfo);
        }

} catch (Exception e) {
	logger.error("Something baad happened!", e);
	e.printStackTrace();
}

        return repositorySummaryInfoList;
    }
}