/*
 * Copyright 2012 Nodeable Inc
 *
 *    Licensed 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.streamreduce.core.dao;

import com.google.code.morphia.Datastore;
import com.google.code.morphia.query.Query;
import com.streamreduce.core.model.Account;
import com.streamreduce.core.model.Event;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * DAO for accessing {@link Event} objects.
 */
@Repository("eventDAO")
public class EventDAO extends ValidatingDAO<Event> {

    @Autowired
    protected EventDAO(@Qualifier(value = "messageDBDatastore") Datastore datastore) {
        super(datastore);
    }

    public List<Event> forAccount(Account account) {
        Query<Event> query = createQuery();

        query.field("accountId").equal(account != null ? account.getId() : null);

        return query.asList();
    }

    public List<Event> allEvents() {
        return find().asList();
    }

    public Event previousTargetEvent(ObjectId targetId) {
        Query<Event> query = createQuery();

        query.field("targetId").equal(targetId);

        return query.order("-timestamp").limit(1).get();
    }

}