package eu.eudat.query;

import eu.eudat.authorization.AuthorizationFlags;
import eu.eudat.commons.enums.ReferenceType;
import eu.eudat.commons.enums.IsActive;
import eu.eudat.commons.enums.ReferenceSourceType;
import eu.eudat.commons.scope.user.UserScope;
import eu.eudat.data.ReferenceEntity;
import eu.eudat.model.Reference;
import gr.cite.commons.web.authz.service.AuthorizationService;
import gr.cite.tools.data.query.FieldResolver;
import gr.cite.tools.data.query.QueryBase;
import gr.cite.tools.data.query.QueryContext;
import jakarta.persistence.Tuple;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.Predicate;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

import java.time.Instant;
import java.util.*;

@Component
@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class ReferenceQuery extends QueryBase<ReferenceEntity> {

    private String like;

    private Collection<UUID> ids;

    private Collection<IsActive> isActives;

    private Collection<ReferenceSourceType> referenceSourceTypes;

    private Collection<ReferenceType> referenceTypes;

    private Collection<UUID> excludedIds;

    private EnumSet<AuthorizationFlags> authorize = EnumSet.of(AuthorizationFlags.None);

    public ReferenceQuery like(String value) {
        this.like = value;
        return this;
    }

    public ReferenceQuery ids(UUID value) {
        this.ids = List.of(value);
        return this;
    }

    public ReferenceQuery ids(UUID... value) {
        this.ids = Arrays.asList(value);
        return this;
    }

    public ReferenceQuery ids(Collection<UUID> values) {
        this.ids = values;
        return this;
    }

    public ReferenceQuery isActive(IsActive value) {
        this.isActives = List.of(value);
        return this;
    }

    public ReferenceQuery isActive(IsActive... value) {
        this.isActives = Arrays.asList(value);
        return this;
    }

    public ReferenceQuery isActive(Collection<IsActive> values) {
        this.isActives = values;
        return this;
    }

    public ReferenceQuery types(ReferenceType value) {
        this.referenceTypes = List.of(value);
        return this;
    }

    public ReferenceQuery types(ReferenceType... value) {
        this.referenceTypes = Arrays.asList(value);
        return this;
    }

    public ReferenceQuery types(Collection<ReferenceType> values) {
        this.referenceTypes = values;
        return this;
    }

    public ReferenceQuery excludedIds(Collection<UUID> values) {
        this.excludedIds = values;
        return this;
    }

    public ReferenceQuery excludedIds(UUID value) {
        this.excludedIds = List.of(value);
        return this;
    }

    public ReferenceQuery excludedIds(UUID... value) {
        this.excludedIds = Arrays.asList(value);
        return this;
    }

    public ReferenceQuery sourceTypes(ReferenceSourceType value) {
        this.referenceSourceTypes = List.of(value);
        return this;
    }

    public ReferenceQuery sourceTypes(ReferenceSourceType... value) {
        this.referenceSourceTypes = Arrays.asList(value);
        return this;
    }

    public ReferenceQuery sourceTypes(Collection<ReferenceSourceType> values) {
        this.referenceSourceTypes = values;
        return this;
    }

    public ReferenceQuery authorize(EnumSet<AuthorizationFlags> values) {
        this.authorize = values;
        return this;
    }

    private final UserScope userScope;

    private final AuthorizationService authService;

    public ReferenceQuery(
            UserScope userScope,
            AuthorizationService authService
    ) {
        this.userScope = userScope;
        this.authService = authService;
    }

    @Override
    protected Class<ReferenceEntity> entityClass() {
        return ReferenceEntity.class;
    }

    @Override
    protected Boolean isFalseQuery() {
        return this.isEmpty(this.ids) || this.isEmpty(this.isActives) || this.isEmpty(this.excludedIds) || this.isEmpty(this.referenceTypes) || this.isEmpty(this.referenceSourceTypes);
    }

    @Override
    protected <X, Y> Predicate applyFilters(QueryContext<X, Y> queryContext) {
        List<Predicate> predicates = new ArrayList<>();
        if (this.ids != null) {
            CriteriaBuilder.In<UUID> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._id));
            for (UUID item : this.ids)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.like != null && !this.like.isEmpty()) {
            predicates.add(queryContext.CriteriaBuilder.or(queryContext.CriteriaBuilder.like(queryContext.Root.get(ReferenceEntity._label), this.like),
                    queryContext.CriteriaBuilder.like(queryContext.Root.get(ReferenceEntity._description), this.like)
            ));
        }
        if (this.isActives != null) {
            CriteriaBuilder.In<IsActive> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._isActive));
            for (IsActive item : this.isActives)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.referenceSourceTypes != null) {
            CriteriaBuilder.In<ReferenceSourceType> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._sourceType));
            for (ReferenceSourceType item : this.referenceSourceTypes)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.referenceTypes != null) {
            CriteriaBuilder.In<ReferenceType> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._type));
            for (ReferenceType item : this.referenceTypes)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.excludedIds != null) {
            CriteriaBuilder.In<UUID> notInClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(ReferenceEntity._id));
            for (UUID item : this.excludedIds)
                notInClause.value(item);
            predicates.add(notInClause.not());
        }
        if (!predicates.isEmpty()) {
            Predicate[] predicatesArray = predicates.toArray(new Predicate[0]);
            return queryContext.CriteriaBuilder.and(predicatesArray);
        } else {
            return null;
        }
    }

    @Override
    protected ReferenceEntity convert(Tuple tuple, Set<String> columns) {
        ReferenceEntity item = new ReferenceEntity();
        item.setId(QueryBase.convertSafe(tuple, columns, ReferenceEntity._id, UUID.class));
        item.setLabel(QueryBase.convertSafe(tuple, columns, ReferenceEntity._label, String.class));
        item.setDescription(QueryBase.convertSafe(tuple, columns, ReferenceEntity._description, String.class));
        item.setCreatedAt(QueryBase.convertSafe(tuple, columns, ReferenceEntity._createdAt, Instant.class));
        item.setUpdatedAt(QueryBase.convertSafe(tuple, columns, ReferenceEntity._updatedAt, Instant.class));
        item.setIsActive(QueryBase.convertSafe(tuple, columns, ReferenceEntity._isActive, IsActive.class));
        item.setDefinition(QueryBase.convertSafe(tuple, columns, ReferenceEntity._definition, String.class));
        item.setAbbreviation(QueryBase.convertSafe(tuple, columns, ReferenceEntity._abbreviation, String.class));
        item.setReference(QueryBase.convertSafe(tuple, columns, ReferenceEntity._reference, String.class));
        item.setSource(QueryBase.convertSafe(tuple, columns, ReferenceEntity._source, String.class));
        item.setSourceType(QueryBase.convertSafe(tuple, columns, ReferenceEntity._sourceType, ReferenceSourceType.class));
        item.setType(QueryBase.convertSafe(tuple, columns, ReferenceEntity._type, ReferenceType.class));
        item.setCreatedBy(QueryBase.convertSafe(tuple, columns, ReferenceEntity._createdBy, UUID.class));
        return item;
    }

    @Override
    protected String fieldNameOf(FieldResolver item) {
        if (item.match(ReferenceEntity._id)) return ReferenceEntity._id;
        else if (item.match(Reference._label)) return ReferenceEntity._label;
        else if (item.match(Reference._description)) return ReferenceEntity._description;
        else if (item.match(Reference._createdAt)) return ReferenceEntity._createdAt;
        else if (item.match(Reference._updatedAt)) return ReferenceEntity._updatedAt;
        else if (item.match(Reference._isActive)) return ReferenceEntity._isActive;
        else if (item.match(Reference._definition)) return ReferenceEntity._definition;
        else if (item.match(Reference._abbreviation)) return ReferenceEntity._abbreviation;
        else if (item.match(Reference._reference)) return ReferenceEntity._reference;
        else if (item.match(Reference._source)) return ReferenceEntity._source;
        else if (item.match(Reference._sourceType)) return ReferenceEntity._sourceType;
        else if (item.match(Reference._type)) return ReferenceEntity._type;
        //else if (item.prefix(Reference._createdBy)) return ReferenceEntity._createdBy;
        else return null;
    }

}