package eu.eudat.logic.managers;

import eu.eudat.data.dao.criteria.DataManagementPlanCriteria;
import eu.eudat.data.dao.criteria.DatasetCriteria;
import eu.eudat.data.dao.entities.DMPDao;
import eu.eudat.data.dao.entities.DatasetDao;
import eu.eudat.data.dao.entities.ProjectDao;
import eu.eudat.data.entities.UserInfo;
import eu.eudat.logic.builders.model.models.RecentActivityDataBuilder;
import eu.eudat.logic.services.ApiContext;
import eu.eudat.models.data.dashboard.recent.RecentActivity;
import eu.eudat.models.data.dashboard.recent.RecentActivityData;
import eu.eudat.models.data.dashboard.searchbar.SearchBarItem;
import eu.eudat.models.data.dashboard.statistics.DashBoardStatistics;
import eu.eudat.models.data.security.Principal;
import eu.eudat.types.searchbar.SearchBarItemType;

import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.CompletableFuture;

public class DashBoardManager {

    public DashBoardStatistics getStatistics(DatasetDao datasetRepository, DMPDao dataManagementPlanRepository, ProjectDao projectRepository) {
        DashBoardStatistics statistics = new DashBoardStatistics();
        DatasetCriteria datasetCriteria = new DatasetCriteria();
        datasetCriteria.setAllVersions(false);
        DataManagementPlanCriteria dataManagementPlanCriteria = new DataManagementPlanCriteria();
        dataManagementPlanCriteria.setAllVersions(false);

        CompletableFuture dmpFuture = dataManagementPlanRepository.getWithCriteria(dataManagementPlanCriteria).countAsync()
                .whenComplete((dmpsStats, throwable) -> statistics.setTotalDataManagementPlanCount(dmpsStats));
        CompletableFuture datasetFuture = datasetRepository.getWithCriteria(datasetCriteria).countAsync()
                .whenComplete((datasetsStats, throwable) -> statistics.setTotalDataSetCount(datasetsStats));
        CompletableFuture projectFuture = projectRepository.asQueryable().countAsync()
                .whenComplete((projectsStats, throwable) -> statistics.setTotalProjectCount(projectsStats));

        CompletableFuture.allOf(dmpFuture, datasetFuture, projectFuture).join();
        return statistics;
    }

    public DashBoardStatistics getMeStatistics(DatasetDao datasetRepository, DMPDao dataManagementPlanRepository, ProjectDao projectRepository, Principal principal) {
        DashBoardStatistics statistics = new DashBoardStatistics();
        UserInfo user = new UserInfo();
        user.setId(principal.getId());
        DatasetCriteria datasetCriteria = new DatasetCriteria();
        datasetCriteria.setAllVersions(false);
        DataManagementPlanCriteria dataManagementPlanCriteria = new DataManagementPlanCriteria();
        dataManagementPlanCriteria.setAllVersions(false);
        CompletableFuture dmpFuture = dataManagementPlanRepository.getAuthenticated(dataManagementPlanRepository.getWithCriteria(dataManagementPlanCriteria), user).countAsync()
                .whenComplete((dmpsStats, throwable) -> statistics.setTotalDataManagementPlanCount(dmpsStats));
        CompletableFuture datasetFuture = datasetRepository.getAuthenticated(datasetRepository.getWithCriteria(datasetCriteria), user).countAsync()
                .whenComplete((datasetsStats, throwable) -> statistics.setTotalDataSetCount(datasetsStats));
        CompletableFuture projectFuture = projectRepository.getAuthenticated(projectRepository.asQueryable(), user).countAsync()
                .whenComplete((projectsStats, throwable) -> statistics.setTotalProjectCount(projectsStats));

        CompletableFuture.allOf(dmpFuture, datasetFuture, projectFuture).join();
        return statistics;
    }

    public RecentActivity getRecentActivity(ApiContext apiContext, DatasetDao datasetRepository, DMPDao dataManagementPlanRepository, ProjectDao projectRepository, Principal principal, Integer numberofactivities) {
        RecentActivity activity = new RecentActivity();
        UserInfo user = new UserInfo();
        user.setId(principal.getId());
        DatasetCriteria datasetCriteria = new DatasetCriteria();
        datasetCriteria.setAllVersions(false);
        DataManagementPlanCriteria dataManagementPlanCriteria = new DataManagementPlanCriteria();
        dataManagementPlanCriteria.setAllVersions(false);

        RecentActivityDataBuilder recentActivityDataBuilder = apiContext.getOperationsContext().getBuilderFactory().getBuilder(RecentActivityDataBuilder.class);

        CompletableFuture<List<RecentActivityData>> dmps = dataManagementPlanRepository.getAuthenticated(dataManagementPlanRepository.getWithCriteria(dataManagementPlanCriteria), user)
                .withHint("dmpRecentActivity")
                .orderBy((builder, root) -> builder.desc(root.get("modified")))
                .take(numberofactivities)
                .selectAsync(item -> recentActivityDataBuilder.label(item.getLabel()).timestamp(item.getModified()).id(item.getId().toString()).build())
                .whenComplete((dmpActivities, throwable) -> activity.setRecentDmpActivities(dmpActivities));

        CompletableFuture<List<RecentActivityData>> datasets = datasetRepository.getAuthenticated(datasetRepository.getWithCriteria(datasetCriteria), user)
                .withHint("datasetRecentActivity")
                .orderBy((builder, root) -> builder.desc(root.get("modified")))
                .take(numberofactivities)
                .selectAsync(item -> recentActivityDataBuilder.label(item.getLabel()).timestamp(item.getModified()).id(item.getId().toString()).build())
                .whenComplete((datasetActivities, throwable) -> activity.setRecentDatasetActivities(datasetActivities));

        CompletableFuture<List<RecentActivityData>> projects = projectRepository.getAuthenticated(projectRepository.asQueryable(), user)
                .withHint("projectRecentActivity")
                .orderBy((builder, root) -> builder.desc(root.get("modified")))
                .take(numberofactivities)
                .selectAsync(item -> recentActivityDataBuilder.label(item.getLabel()).timestamp(item.getModified()).id(item.getId().toString()).build())
                .whenComplete((projectActivities, throwable) -> activity.setRecentProjectActivities(projectActivities));

        CompletableFuture.allOf(projects, dmps, datasets).join();
        return activity;
    }

    public List<SearchBarItem> searchUserData(String like, ApiContext apiContext, DatasetDao datasetRepository, DMPDao dataManagementPlanRepository, ProjectDao projectRepository, Principal principal) {
        RecentActivity activity = new RecentActivity();
        UserInfo user = new UserInfo();
        user.setId(principal.getId());

        List<SearchBarItem> searchBarItems = new LinkedList<>();
        CompletableFuture<List<SearchBarItem>> dmps = dataManagementPlanRepository.getAuthenticated(dataManagementPlanRepository.asQueryable(), user)
                .withHint("dmpRecentActivity")
                .where((builder, root) -> builder.like(builder.upper(root.get("label")), "%" + like.toUpperCase() + "%"))
                .orderBy((builder, root) -> builder.desc(root.get("modified")))
                .selectAsync(item -> new SearchBarItem(item.getId().toString(), item.getLabel(), SearchBarItemType.DMP.getValue()))
                .whenComplete((dmpItems, throwable) -> searchBarItems.addAll(dmpItems));

        CompletableFuture<List<SearchBarItem>> datasets = datasetRepository.getAuthenticated(datasetRepository.asQueryable(), user)
                .withHint("datasetRecentActivity")
                .where((builder, root) -> builder.like(builder.upper(root.get("label")), "%" + like.toUpperCase() + "%"))
                .orderBy((builder, root) -> builder.desc(root.get("modified")))
                .selectAsync(item -> new SearchBarItem(item.getId().toString(), item.getLabel(), SearchBarItemType.DATASET.getValue()))
                .whenComplete((dataSetItems, throwable) -> searchBarItems.addAll(dataSetItems));

        CompletableFuture<List<SearchBarItem>> projects = projectRepository.getAuthenticated(projectRepository.asQueryable(), user)
                .withHint("projectRecentActivity")
                .where((builder, root) -> builder.like(builder.upper(root.get("label")), "%" + like.toUpperCase() + "%"))
                .orderBy((builder, root) -> builder.desc(root.get("modified")))
                .selectAsync(item -> new SearchBarItem(item.getId().toString(), item.getLabel(), SearchBarItemType.PROJECT.getValue()))
                .whenComplete((projectItems, throwable) -> searchBarItems.addAll(projectItems));

        CompletableFuture.allOf(projects, dmps, datasets).join();
        return searchBarItems;
    }

}