/**
 * Copyright (C) 2012-2014 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;

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

import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.googlecode.flyway.core.Flyway;

@Singleton
public class MigrationEngineFlyway implements MigrationEngine {

    private NinjaProperties ninjaProperties;

    @Inject
    public MigrationEngineFlyway(NinjaProperties ninjaProperties) {
        this.ninjaProperties = ninjaProperties;
        
    }
    
    @Override
    public void migrate() {
        
        // Run migration only when activated in configuration.conf:
        Boolean runMigrations = ninjaProperties.getBoolean(NinjaConstant.NINJA_MIGRATION_RUN);
        
        if (runMigrations != null && runMigrations) {
        
            // 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();
            
        }
        
    }

    

}
