/**
 * Copyright 2015 LinkedIn Corp. All rights reserved.
 *
 * 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.
 */
package controllers;

import java.lang.reflect.Constructor;
import java.util.HashMap;
import java.util.Map;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.hibernate.hikaricp.internal.HikariCPConnectionProvider;
import play.Play;
import play.mvc.Controller;
import play.mvc.Result;
import wherehows.dao.DaoFactory;


public class Application extends Controller {

  private static final String DB_WHEREHOWS_URL = Play.application().configuration().getString("db.wherehows.url");
  private static final String DB_WHEREHOWS_USERNAME =
      Play.application().configuration().getString("db.wherehows.username");
  private static final String DB_WHEREHOWS_PASSWORD =
      Play.application().configuration().getString("db.wherehows.password");

  public static final EntityManagerFactory entityManagerFactory;

  static {
    Map<String, String> properties = new HashMap<>();
    properties.put("hibernate.connection.provider_class", HikariCPConnectionProvider.class.getName());
    properties.put("hibernate.hikari.dataSourceClassName", "com.mysql.jdbc.jdbc2.optional.MysqlDataSource");
    properties.put("hibernate.hikari.dataSource.url", DB_WHEREHOWS_URL);
    properties.put("hibernate.hikari.dataSource.user", DB_WHEREHOWS_USERNAME);
    properties.put("hibernate.hikari.dataSource.password", DB_WHEREHOWS_PASSWORD);
    properties.put("hibernate.hikari.dataSource.cachePrepStmts", "true");
    properties.put("hibernate.hikari.dataSource.prepStmtCacheSize", "250");
    properties.put("hibernate.hikari.dataSource.prepStmtCacheSqlLimit", "2048");
    properties.put("hibernate.hikari.minimumIdle", "5");
    properties.put("hibernate.hikari.maximumPoolSize", "10");
    properties.put("hibernate.hikari.idleTimeout", "30000");
    properties.put("hibernate.show_sql", "false");
    properties.put("hibernate.dialect", "MySQL5");
    properties.put("hibernate.jdbc.batch_size", "100");
    properties.put("hibernate.order_inserts", "true");
    properties.put("hibernate.order_updates", "true");
    entityManagerFactory = Persistence.createEntityManagerFactory("default", properties);
  }

  public static final DaoFactory daoFactory = createDaoFactory();

  private static DaoFactory createDaoFactory() {
    try {
      String className = Play.application().configuration().getString("dao.entityManagerFactory.class", DaoFactory.class.getCanonicalName());
      Class factoryClass = Class.forName(className);
      Constructor<? extends DaoFactory> ctor = factoryClass.getConstructor(EntityManagerFactory.class);
      return ctor.newInstance(entityManagerFactory);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  public static Result index() {
    return ok("TEST");
  }

  public static Result healthcheck() {
    return ok("GOOD");
  }
}