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/**
 * Copyright (C) 2012-2016 the original author or authors.
 *
 * 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 ninja.migrations.flyway;

import ninja.utils.NinjaConstant;
import ninja.utils.NinjaProperties;

import org.flywaydb.core.Flyway;

import com.google.inject.Inject;
import com.google.inject.Singleton;
import ninja.migrations.MigrationEngine;

@Singleton
public class MigrationEngineFlyway implements MigrationEngine {

    private final NinjaProperties ninjaProperties;

    @Inject
    public MigrationEngineFlyway(NinjaProperties ninjaProperties) {
        this.ninjaProperties = ninjaProperties;
    }
    
    @Override
    public void migrate() {  
        // Get the connection credentials from application.conf
        String connectionUrl = ninjaProperties.getOrDie(NinjaConstant.DB_CONNECTION_URL);
        String connectionUsername = ninjaProperties.getOrDie(NinjaConstant.DB_CONNECTION_USERNAME);
        String connectionPassword = ninjaProperties.getOrDie(NinjaConstant.DB_CONNECTION_PASSWORD);

        // We migrate automatically => if you do not want that (eg in production)
        // set ninja.migration.run=false in application.conf
        Flyway flyway = new Flyway();
        flyway.setDataSource(connectionUrl, connectionUsername, connectionPassword);

        // In testmode we are cleaning the database so that subsequent testcases
        // get a fresh database.
        if (ninjaProperties.isTest()) {
            flyway.clean();
        }

        flyway.migrate();
    }

}