package eu.eudat.logic.managers;

import com.fasterxml.jackson.databind.ObjectMapper;
import eu.eudat.data.entities.DMP;
import eu.eudat.data.entities.UserRole;
import eu.eudat.data.query.items.table.userinfo.UserInfoTableRequestItem;
import eu.eudat.exceptions.security.UnauthorisedException;
import eu.eudat.logic.builders.entity.UserRoleBuilder;
import eu.eudat.logic.builders.model.models.DataTableDataBuilder;
import eu.eudat.logic.services.ApiContext;
import eu.eudat.logic.services.operations.AuthenticationServiceImpl;
import eu.eudat.logic.utilities.builders.XmlBuilder;
import eu.eudat.models.data.dmp.DataManagementPlan;
import eu.eudat.models.data.helpers.common.DataTableData;
import eu.eudat.models.data.login.Credentials;
import eu.eudat.models.data.security.Principal;
import eu.eudat.models.data.userinfo.UserListingModel;
import eu.eudat.models.data.userinfo.UserProfile;
import eu.eudat.queryable.QueryableList;
import org.json.JSONObject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.stream.Collectors;

public class UserManager {
    public static eu.eudat.models.data.user.composite.DatasetProfile generateDatasetProfileModel(eu.eudat.data.entities.DatasetProfile profile) {
        Document viewStyleDoc = XmlBuilder.fromXml(profile.getDefinition());
        Element root = (Element) viewStyleDoc.getDocumentElement();
        eu.eudat.models.data.entities.xmlmodels.datasetprofiledefinition.ViewStyleModel viewstyle = new eu.eudat.models.data.entities.xmlmodels.datasetprofiledefinition.ViewStyleModel().fromXml(root);

        eu.eudat.models.data.user.composite.DatasetProfile datasetprofile = new eu.eudat.models.data.user.composite.DatasetProfile();
        datasetprofile.buildProfile(viewstyle);

        return datasetprofile;
    }

    public static DataTableData<UserListingModel> getPaged(ApiContext apiContext, UserInfoTableRequestItem userInfoTableRequestItem) throws Exception {
        QueryableList<eu.eudat.data.entities.UserInfo> users = apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().getWithCriteria(userInfoTableRequestItem.getCriteria());
        QueryableList<eu.eudat.data.entities.UserInfo> pagedUsers = PaginationManager.applyPaging(users, userInfoTableRequestItem);

        List<UserListingModel> modelUsers = pagedUsers.select(item -> new UserListingModel().fromDataModel(item));
        return apiContext.getOperationsContext().getBuilderFactory().getBuilder(DataTableDataBuilder.class).totalCount(users.count()).data(modelUsers).build();
    }

    public static UserProfile getSingle(ApiContext apiContext, UUID userId) throws Exception {
        eu.eudat.data.entities.UserInfo user = apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().find(userId);
        UserProfile profile = new UserProfile().fromDataModel(user);
        List<DMP> dmps = apiContext.getOperationsContext().getDatabaseRepository().getDmpDao().getAuthenticated(apiContext.getOperationsContext().getDatabaseRepository().getDmpDao().asQueryable(), user).take(5).toList();
        profile.setAssociatedDmps(dmps.stream().map(x -> new DataManagementPlan().fromDataModel(x)).collect(Collectors.toList()));
        return profile;
    }

    public static void editRoles(ApiContext apiContext, UserListingModel user) {
        eu.eudat.data.entities.UserInfo userInfo = apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().find(user.getId());
        userInfo.getUserRoles().stream().forEach(item -> apiContext.getOperationsContext().getDatabaseRepository().getUserRoleDao().delete(item));
        for (Integer role : user.getAppRoles()) {
            UserRole userRole = apiContext.getOperationsContext().getBuilderFactory().getBuilder(UserRoleBuilder.class).role(role).userInfo(userInfo).build();
            apiContext.getOperationsContext().getDatabaseRepository().getUserRoleDao().createOrUpdate(userRole);
        }
    }

    public static void updateSettings(ApiContext apiContext, Map<String, Object> settings, Principal principal) throws IOException {
        eu.eudat.data.entities.UserInfo userInfo = apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao().find(principal.getId());
        apiContext.getOperationsContext().getDatabaseRepository().detachEntity(userInfo);
        HashMap<String, Object> result =
                new ObjectMapper().readValue(userInfo.getAdditionalinfo(), HashMap.class);
        result.putAll(settings);
        userInfo.setAdditionalinfo(new JSONObject(result).toString());
        apiContext.getOperationsContext().getDatabaseRepository().getUserInfoDao()
                .createOrUpdate(userInfo);
    }

    public static Principal authenticate(AuthenticationServiceImpl authenticationServiceImpl, Credentials credentials) {
        Principal principal = authenticationServiceImpl.Touch(credentials);
        if (principal == null) throw new UnauthorisedException("Could not Sign In User");
        return principal;
    }
}