/*
    * Copyright 2004-2025 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 com.ibatis.sqlmap.engine.datasource;
  
  import com.ibatis.sqlmap.client.SqlMapException;
  
  import java.util.Iterator;
  import java.util.Map;
  import java.util.Properties;
  
  import javax.naming.Context;
  import javax.naming.InitialContext;
  import javax.naming.NamingException;
  import javax.sql.DataSource;
  
  /**
   * DataSourceFactory implementation for JNDI.
   */
  public class JndiDataSourceFactory implements DataSourceFactory {
  
    /** The data source. */
    private DataSource dataSource;
  
    @Override
    public void initialize(Map properties) {
      try {
        InitialContext initCtx = null;
        Properties context = getContextProperties(properties);
  
        if (context == null) {
          initCtx = new InitialContext();
        } else {
          initCtx = new InitialContext(context);
        }
  
        if (properties.containsKey("DataSource")) {
          dataSource = (DataSource) initCtx.lookup((String) properties.get("DataSource"));
        } else if (properties.containsKey("DBJndiContext")) {
          // LEGACY --Backward compatibility
          dataSource = (DataSource) initCtx.lookup((String) properties.get("DBJndiContext"));
        } else if (properties.containsKey("DBFullJndiContext")) {
          // LEGACY --Backward compatibility
          dataSource = (DataSource) initCtx.lookup((String) properties.get("DBFullJndiContext"));
        } else if (properties.containsKey("DBInitialContext") && properties.containsKey("DBLookup")) {
          // LEGACY - Backward compatibility
          Context ctx = (Context) initCtx.lookup((String) properties.get("DBInitialContext"));
          dataSource = (DataSource) ctx.lookup((String) properties.get("DBLookup"));
        }
  
      } catch (NamingException e) {
        throw new SqlMapException("There was an error configuring JndiDataSourceTransactionPool. Cause: " + e, e);
      }
    }
  
    @Override
    public DataSource getDataSource() {
      return dataSource;
    }
  
    /**
     * Gets the context properties.
     *
     * @param allProps
     *          the all props
     *
     * @return the context properties
     */
    private static Properties getContextProperties(Map allProps) {
      final String PREFIX = "context.";
      Properties contextProperties = null;
      Iterator keys = allProps.keySet().iterator();
      while (keys.hasNext()) {
        String key = (String) keys.next();
        String value = (String) allProps.get(key);
        if (key.startsWith(PREFIX)) {
          if (contextProperties == null) {
            contextProperties = new Properties();
          }
          contextProperties.put(key.substring(PREFIX.length()), value);
        }
      }
      return contextProperties;
    }
  
  }