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/*
 *    Copyright 2013-2023 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
 *
 *       https://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 org.mybatis.cdi;

import jakarta.annotation.PostConstruct;
import jakarta.enterprise.context.ApplicationScoped;
import jakarta.enterprise.inject.Any;
import jakarta.enterprise.inject.Instance;
import jakarta.inject.Inject;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionManager;

/**
 * @author Frank D. Martinez [mnesarco]
 */
@ApplicationScoped
public class SqlSessionManagerRegistry {

  private Map managers;

  @Inject
  @Any
  private Instance factories;

  /**
   * Inits the SqlSessionManagerRegistry.
   */
  @PostConstruct
  public void init() {
    if (this.factories.isUnsatisfied()) {
      throw new MybatisCdiConfigurationException("There are no SqlSessionFactory producers properly configured.");
    }
    Map m = new HashMap<>();
    for (SqlSessionFactory factory : this.factories) {
      SqlSessionManager manager = SqlSessionManager.newInstance(factory);
      m.put(factory, manager);
    }
    this.managers = Collections.unmodifiableMap(m);
  }

  public SqlSessionManager getManager(SqlSessionFactory factory) {
    return this.managers.get(factory);
  }

  public Collection getManagers() {
    return this.managers.values();
  }

}