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package io.ebeaninternal.server.persist;

import io.ebean.bean.BeanCollection;
import io.ebean.bean.EntityBean;
import io.ebeaninternal.api.CoreLog;
import io.ebeaninternal.api.SpiEbeanServer;
import io.ebeaninternal.api.SpiTransaction;
import io.ebeaninternal.server.core.PersistRequestBean;
import io.ebeaninternal.server.deploy.BeanPropertyAssocMany;

import java.io.IOException;

import static java.lang.System.Logger.Level.ERROR;

/**
 * Base for saving entity bean collections and element collections.
 */
abstract class SaveManyBase implements SaveMany {

  final DefaultPersister persister;
  final PersistRequestBean request;
  final SpiEbeanServer server;
  final boolean insertedParent;
  final BeanPropertyAssocMany many;
  final SpiTransaction transaction;
  final EntityBean parentBean;
  final Object value;

  SaveManyBase(DefaultPersister persister, boolean insertedParent, BeanPropertyAssocMany many, EntityBean parentBean, PersistRequestBean request) {
    this.persister = persister;
    this.request = request;
    this.server = request.server();
    this.many = many;
    this.parentBean = parentBean;
    this.transaction = request.transaction();
    this.value = many.getValue(parentBean);
    this.insertedParent = insertedParent;
    if (!insertedParent) {
      request.setUpdatedMany();
    }
  }

  /**
   * Save the collection.
   */
  abstract void save();

  final void preElementCollectionUpdate() {
    if (!insertedParent) {
      request.preElementCollectionUpdate();
      persister.addToFlushQueue(many.deleteByParentId(request.beanId()), transaction, BatchControl.DELETE_QUEUE);
    }
  }

  final void resetModifyState() {
    if (value instanceof BeanCollection) {
      modifyListenReset((BeanCollection) value);
    }
  }

  final void modifyListenReset(BeanCollection c) {
    if (insertedParent) {
      // after insert set the modify listening mode for private owned etc
      c.setModifyListening(many.modifyListenMode());
    }
    c.modifyReset();
  }

  final void postElementCollectionUpdate() {
    if (!insertedParent) {
      if (request.isNotifyCache()) {
        try {
          String asJson = many.jsonWriteCollection(value);
          request.addCollectionChange(many.name(), asJson);
        } catch (IOException e) {
          CoreLog.log.log(ERROR, "Error build element collection entry for L2 cache", e);
        }
      }
    }
  }
}