// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.alert.dao;

import java.util.Date;
import java.util.List;

import javax.ejb.Local;

import org.springframework.stereotype.Component;

import com.cloud.alert.AlertVO;
import com.cloud.utils.db.Filter;
import com.cloud.utils.db.GenericDaoBase;
import com.cloud.utils.db.SearchBuilder;
import com.cloud.utils.db.SearchCriteria;
import com.cloud.utils.db.SearchCriteria.Op;
import com.cloud.utils.db.Transaction;

@Component
@Local(value = { AlertDao.class })
public class AlertDaoImpl extends GenericDaoBase<AlertVO, Long> implements AlertDao {

    protected final SearchBuilder<AlertVO> AlertSearchByIdsAndType;

    public AlertDaoImpl() {
        AlertSearchByIdsAndType = createSearchBuilder();
        AlertSearchByIdsAndType.and("id", AlertSearchByIdsAndType.entity().getId(), Op.IN);
        AlertSearchByIdsAndType.and("type", AlertSearchByIdsAndType.entity().getType(), Op.EQ);
        AlertSearchByIdsAndType.and("createdDateL", AlertSearchByIdsAndType.entity().getCreatedDate(), Op.LT);
        AlertSearchByIdsAndType.and("data_center_id", AlertSearchByIdsAndType.entity().getDataCenterId(), Op.EQ);
        AlertSearchByIdsAndType.done();
    }

    @Override
    public AlertVO getLastAlert(short type, long dataCenterId, Long podId, Long clusterId) {
        Filter searchFilter = new Filter(AlertVO.class, "createdDate", Boolean.FALSE, Long.valueOf(0), Long.valueOf(1));
        SearchCriteria<AlertVO> sc = createSearchCriteria();

        sc.addAnd("type", SearchCriteria.Op.EQ, Short.valueOf(type));
        sc.addAnd("dataCenterId", SearchCriteria.Op.EQ, Long.valueOf(dataCenterId));
        if (podId != null) {
            sc.addAnd("podId", SearchCriteria.Op.EQ, podId);
        }
        if (clusterId != null) {
            sc.addAnd("clusterId", SearchCriteria.Op.EQ, clusterId);
        }

        List<AlertVO> alerts = listBy(sc, searchFilter);
        if ((alerts != null) && !alerts.isEmpty()) {
            return alerts.get(0);
        }
        return null;
    }
    
    @Override
    public AlertVO getLastAlert(short type, long dataCenterId, Long podId) {
        Filter searchFilter = new Filter(AlertVO.class, "createdDate", Boolean.FALSE, Long.valueOf(0), Long.valueOf(1));
        SearchCriteria<AlertVO> sc = createSearchCriteria();

        sc.addAnd("type", SearchCriteria.Op.EQ, Short.valueOf(type));
        sc.addAnd("dataCenterId", SearchCriteria.Op.EQ, Long.valueOf(dataCenterId));
        if (podId != null) {
            sc.addAnd("podId", SearchCriteria.Op.EQ, podId);
        }        

        List<AlertVO> alerts = listBy(sc, searchFilter);
        if ((alerts != null) && !alerts.isEmpty()) {
            return alerts.get(0);
        }
        return null;
    }

    @Override
    public boolean archiveAlert(List<Long> Ids, String type, Date olderThan, Long zoneId) {
        SearchCriteria<AlertVO> sc = AlertSearchByIdsAndType.create();

        if (Ids != null) {
            sc.setParameters("id", Ids.toArray(new Object[Ids.size()]));
        }
        if(type != null) {
            sc.setParameters("type", type);
        }
        if(zoneId != null) {
            sc.setParameters("data_center_id", zoneId);
        }
        if(olderThan != null) {
            sc.setParameters("createdDateL", olderThan);
        }
        boolean result = true;;
        List<AlertVO> alerts = listBy(sc);
        if (Ids != null && alerts.size() < Ids.size()) {
            result = false;
            return result;
        }
        Transaction txn = Transaction.currentTxn();
        txn.start();
        for (AlertVO alert : alerts) {
            alert = lockRow(alert.getId(), true);
            alert.setArchived(true);
            update(alert.getId(), alert);
            txn.commit();
        }
        txn.close();
        return result;
    }

    @Override
    public boolean deleteAlert(List<Long> ids, String type, Date olderThan, Long zoneId) {
        SearchCriteria<AlertVO> sc = AlertSearchByIdsAndType.create();

        if (ids != null) {
            sc.setParameters("id", ids.toArray(new Object[ids.size()]));
        }
        if(type != null) {
            sc.setParameters("type", type);
        }
        if(zoneId != null) {
            sc.setParameters("data_center_id", zoneId);
        }
        if(olderThan != null) {
            sc.setParameters("createdDateL", olderThan);
        }
        boolean result = true;
        List<AlertVO> alerts = listBy(sc);
        if (ids != null && alerts.size() < ids.size()) {
            result = false;
            return result;
        }
        remove(sc);
        return result;
    }

    @Override
    public List<AlertVO> listOlderAlerts(Date oldTime) {
        if (oldTime == null) return null;
        SearchCriteria<AlertVO> sc = createSearchCriteria();
        sc.addAnd("createDate", SearchCriteria.Op.LT, oldTime);
        return listIncludingRemovedBy(sc, null);
    }

}