package eu.eudat.managers;

import eu.eudat.builders.model.models.DataTableDataBuilder;
import eu.eudat.dao.entities.DatasetProfileDao;
import eu.eudat.entities.DatasetProfile;
import eu.eudat.entities.xmlmodels.datasetprofiledefinition.Field;
import eu.eudat.models.datasetprofile.DatasetProfileAutocompleteItem;
import eu.eudat.models.datasetprofile.DatasetProfileAutocompleteRequest;
import eu.eudat.models.datasetprofile.DatasetProfileListingModel;
import eu.eudat.models.datasetprofile.DatasetProfileTableRequestItem;
import eu.eudat.models.helpers.common.DataTableData;
import eu.eudat.queryable.QueryableList;
import eu.eudat.services.ApiContext;
import eu.eudat.utilities.builders.XmlBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import javax.xml.xpath.*;
import java.util.List;


public class DatasetProfileManager {

    public static List<DatasetProfileAutocompleteItem> getWithCriteria(DatasetProfileDao datasetProfileRepository, DatasetProfileAutocompleteRequest datasetProfileAutocompleteRequest) throws IllegalAccessException, InstantiationException {
        QueryableList<DatasetProfile> items = datasetProfileRepository.getWithCriteria(datasetProfileAutocompleteRequest.getCriteria());
        List<DatasetProfileAutocompleteItem> datasetProfiles = items.select(item -> new DatasetProfileAutocompleteItem().fromDataModel(item));
        return datasetProfiles;
    }

    public static DataTableData<DatasetProfileListingModel> getPaged(ApiContext apiContext, DatasetProfileTableRequestItem datasetProfileTableRequestItem) throws Exception {
        QueryableList<DatasetProfile> items = apiContext.getOperationsContext().getDatabaseRepository().getDatasetProfileDao().getWithCriteria(datasetProfileTableRequestItem.getCriteria());
        QueryableList<DatasetProfile> pagedItems = PaginationManager.applyPaging(items, datasetProfileTableRequestItem);
        List<DatasetProfileListingModel> datasetProfiles = pagedItems.select(item -> new DatasetProfileListingModel().fromDataModel(item));
        return apiContext.getOperationsContext().getBuilderFactory().getBuilder(DataTableDataBuilder.class).data(datasetProfiles).totalCount(items.count()).build();
    }

    public static List<DatasetProfileListingModel> getAll(DatasetProfileDao datasetProfileRepository) throws IllegalAccessException, InstantiationException {
        QueryableList<DatasetProfile> items = datasetProfileRepository.getAll();
        List<DatasetProfileListingModel> datasetProfiles = items.select(item -> new DatasetProfileListingModel().fromDataModel(item));
        return datasetProfiles;
    }

    public static eu.eudat.entities.xmlmodels.datasetprofiledefinition.Field queryForField(String xml, String fieldId) throws XPathExpressionException {
        eu.eudat.entities.xmlmodels.datasetprofiledefinition.Field field = new Field();
        Document document = XmlBuilder.fromXml(xml);
        XPathFactory xpathFactory = XPathFactory.newInstance();
        XPath xpath = xpathFactory.newXPath();
        XPathExpression expr =
                xpath.compile("//field[@id='" + fieldId + "']");
        Element name = (Element) expr.evaluate(document, XPathConstants.NODE);
        field.fromXml(name);
        return field;
    }

}