package gr.cite.annotation.query;

import gr.cite.annotation.authorization.AuthorizationFlags;
import gr.cite.annotation.authorization.Permission;
import gr.cite.annotation.common.enums.AnnotationProtectionType;
import gr.cite.annotation.common.enums.IsActive;
import gr.cite.annotation.common.scope.user.UserScope;
import gr.cite.annotation.data.AnnotationEntity;
import gr.cite.annotation.data.EntityUserEntity;
import gr.cite.annotation.model.EntityUser;
import gr.cite.annotation.query.utils.BuildSubQueryInput;
import gr.cite.annotation.query.utils.QueryUtilsService;
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.stereotype.Component;
import org.springframework.web.context.annotation.RequestScope;

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

@Component
@RequestScope
public class EntityUserQuery extends QueryBase<EntityUserEntity> {

    private Collection<UUID> ids, entityIds, userIds;

    private Collection<IsActive> isActives;;

    private final AuthorizationService authService;

    private final UserScope userScope;

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

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

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

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

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

    public EntityUserQuery entityIds(UUID value) {
        this.entityIds = List.of(value);
        return this;
    }

    public EntityUserQuery entityIds(UUID... value) {
        this.entityIds = Arrays.asList(value);
        return this;
    }

    public EntityUserQuery entityIds(Collection<UUID> values) {
        this.entityIds = values;
        return this;
    }

    public EntityUserQuery userIds(UUID value) {
        this.userIds = List.of(value);
        return this;
    }

    public EntityUserQuery userIds(UUID... value) {
        this.userIds = Arrays.asList(value);
        return this;
    }

    public EntityUserQuery userIds(Collection<UUID> values) {
        this.userIds = values;
        return this;
    }

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

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

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

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

    @Override
    protected Boolean isFalseQuery() {
        return false;
    }

    @Override
    protected Class<EntityUserEntity> entityClass() {
        return EntityUserEntity.class;
    }
    @Override
    protected <X, Y> Predicate applyAuthZ(QueryContext<X, Y> queryContext) {
        if (this.authorize.contains(AuthorizationFlags.None)) return null;
        if (this.authorize.contains(AuthorizationFlags.Permission) && this.authService.authorize(Permission.BrowseAnnotation)) return null;
        UUID userId = null;
        if (this.authorize.contains(AuthorizationFlags.Associated)) userId = this.userScope.getUserIdSafe();
        if (this.authorize.contains(AuthorizationFlags.Owner)) userId = this.userScope.getUserIdSafe();

        List<Predicate> predicates = new ArrayList<>();
        if (userId != null ) {
            predicates.add( queryContext.CriteriaBuilder.in(queryContext.Root.get(EntityUserEntity._userId)).value(userId));
        }
        if (!predicates.isEmpty()) {
            Predicate[] predicatesArray = predicates.toArray(new Predicate[0]);
            return queryContext.CriteriaBuilder.and(predicatesArray);
        } else {
            return queryContext.CriteriaBuilder.or(); //Creates a false query
        }
    }


    @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(EntityUserEntity._id));
            for (UUID item : this.ids)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.entityIds != null) {
            CriteriaBuilder.In<UUID> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(EntityUserEntity._entityId));
            for (UUID item : this.entityIds)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.userIds != null) {
            CriteriaBuilder.In<UUID> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(EntityUserEntity._userId));
            for (UUID item : this.userIds)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (this.isActives != null) {
            CriteriaBuilder.In<IsActive> inClause = queryContext.CriteriaBuilder.in(queryContext.Root.get(EntityUserEntity._isActive));
            for (IsActive item : this.isActives)
                inClause.value(item);
            predicates.add(inClause);
        }
        if (!predicates.isEmpty()) {
            Predicate[] predicatesArray = predicates.toArray(new Predicate[0]);
            return queryContext.CriteriaBuilder.and(predicatesArray);
        } else {
            return null;
        }
    }

    @Override
    protected String fieldNameOf(FieldResolver item) {
        if (item.match(EntityUser._id))
            return EntityUserEntity._id;
        else if (item.match(EntityUser._entityId))
            return EntityUserEntity._entityId;
        else if (item.match(EntityUser._user))
            return EntityUserEntity._userId;
        else if (item.prefix(EntityUser._user))
            return EntityUserEntity._userId;
        else if (item.match(EntityUser._createdAt))
            return EntityUserEntity._createdAt;
        else if (item.match(EntityUser._updatedAt))
            return EntityUserEntity._updatedAt;
        else if (item.match(EntityUser._hash)) 
            return EntityUserEntity._updatedAt;
        else if (item.match(EntityUser._isActive))
            return EntityUserEntity._isActive;
        else
            return null;
    }

    @Override
    protected EntityUserEntity convert(Tuple tuple, Set<String> columns) {
        EntityUserEntity item = new EntityUserEntity();
        item.setId(QueryBase.convertSafe(tuple, columns, EntityUserEntity._id, UUID.class));
        item.setEntityId(QueryBase.convertSafe(tuple, columns, EntityUserEntity._entityId, UUID.class));
        item.setUserId(QueryBase.convertSafe(tuple, columns, EntityUserEntity._userId, UUID.class));
        item.setCreatedAt(QueryBase.convertSafe(tuple, columns, EntityUserEntity._createdAt, Instant.class));
        item.setUpdatedAt(QueryBase.convertSafe(tuple, columns, EntityUserEntity._updatedAt, Instant.class));
        item.setIsActive(QueryBase.convertSafe(tuple, columns, EntityUserEntity._isActive, IsActive.class));
        return item;
    }
}