package gr.cite.annotation.service.annotation;

import gr.cite.annotation.authorization.AuthorizationFlags;
import gr.cite.annotation.authorization.OwnedResource;
import gr.cite.annotation.authorization.Permission;
import gr.cite.annotation.authorization.authorizationcontentresolver.AuthorizationContentResolver;
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.model.Annotation;
import gr.cite.annotation.model.builder.AnnotationBuilder;
import gr.cite.annotation.model.deleter.AnnotationDeleter;
import gr.cite.annotation.model.persist.AnnotationPersist;
import gr.cite.commons.web.authz.service.AuthorizationService;
import gr.cite.tools.data.builder.BuilderFactory;
import gr.cite.tools.data.deleter.DeleterFactory;
import gr.cite.tools.exception.MyApplicationException;
import gr.cite.tools.exception.MyForbiddenException;
import gr.cite.tools.exception.MyNotFoundException;
import gr.cite.tools.exception.MyValidationException;
import gr.cite.tools.fieldset.BaseFieldSet;
import gr.cite.tools.fieldset.FieldSet;
import gr.cite.tools.logging.LoggerService;
import gr.cite.tools.logging.MapLogEntry;
import jakarta.persistence.EntityManager;
import jakarta.transaction.Transactional;
import org.slf4j.LoggerFactory;
import org.springframework.context.MessageSource;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.stereotype.Service;

import javax.management.InvalidApplicationException;
import java.time.Instant;
import java.util.EnumSet;
import java.util.List;
import java.util.UUID;

@Service
public class AnnotationServiceImpl implements AnnotationService {

    private static final LoggerService logger = new LoggerService(LoggerFactory.getLogger(AnnotationServiceImpl.class));

    private final AuthorizationService authorizationService;

    private final DeleterFactory deleterFactory;

    private final EntityManager entityManager;

    private final BuilderFactory builderFactory;

    private final UserScope userScope;
    private final AuthorizationContentResolver authorizationContentResolver;

    private final MessageSource messageSource;

    
    public AnnotationServiceImpl(
		    AuthorizationService authorizationService,
		    DeleterFactory deleterFactory,
		    EntityManager entityManager,
		    BuilderFactory builderFactory, UserScope userScope, AuthorizationContentResolver authorizationContentResolver, MessageSource messageSource) {
        this.authorizationService = authorizationService;
        this.deleterFactory = deleterFactory;
        this.entityManager = entityManager;
        this.builderFactory = builderFactory;
        this.userScope = userScope;
	    this.authorizationContentResolver = authorizationContentResolver;
	    this.messageSource = messageSource;
    }

    @Override
    @Transactional
    public Annotation persist(AnnotationPersist model, FieldSet fields) throws MyForbiddenException, MyValidationException, MyApplicationException, MyNotFoundException {
        logger.debug(new MapLogEntry("persisting annotation").And("model", model).And("fields", fields));

        this.authorizationService.authorizeAtLeastOneForce(List.of(this.authorizationContentResolver.entityAffiliation(model.getEntityId())), Permission.NewAnnotation);

        AnnotationEntity data = new AnnotationEntity();
        data.setId(UUID.randomUUID());
        data.setSubjectId(userScope.getUserIdSafe());
        data.setEntityId(model.getEntityId());
        data.setEntityType(model.getEntityType());
        data.setAnchor(model.getAnchor());
        data.setPayload(model.getPayload());
        data.setThreadId(model.getThreadId());
        data.setParentId(model.getParentId());
        data.setProtectionType(model.getProtectionType());
        data.setTimeStamp(Instant.now());
        data.setCreatedAt(Instant.now());
        data.setUpdatedAt(Instant.now());
        data.setIsActive(IsActive.Active);

        this.entityManager.persist(data);

        this.entityManager.flush();

        return this.builderFactory.builder(AnnotationBuilder.class).authorize(EnumSet.of(AuthorizationFlags.None)).build(BaseFieldSet.build(fields, Annotation._id), data);
    }

    @Override
    public void deleteAndSave(UUID id) throws MyForbiddenException, InvalidApplicationException {
        logger.debug("deleting Annotation: {}", id);

        AnnotationEntity annotation = this.entityManager.find(AnnotationEntity.class, id);
        if (annotation == null) throw new MyNotFoundException(messageSource.getMessage("General_ItemNotFound", new Object[]{id, Annotation.class.getSimpleName()}, LocaleContextHolder.getLocale()));
        
        this.authorizationService.authorizeAtLeastOneForce(annotation.getSubjectId() != null ? List.of(new OwnedResource(annotation.getSubjectId())) : null, Permission.DeleteAnnotation);

        this.deleterFactory.deleter(AnnotationDeleter.class).deleteAndSaveByIds(List.of(id));
    }

}