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/*
 * This file is part of Log4Jdbc.
 *
 * Log4Jdbc is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Log4Jdbc is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Log4Jdbc.  If not, see .
 *
 */
package fr.ms.log4jdbc.messagefactory;

import java.lang.reflect.Method;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.Statement;

import fr.ms.log4jdbc.context.JdbcContext;
import fr.ms.log4jdbc.invocationhandler.MessageFactory;
import fr.ms.log4jdbc.invocationhandler.MessageInvocationHandler.MessageInvocationContext;
import fr.ms.log4jdbc.invocationhandler.TimeInvocation;
import fr.ms.log4jdbc.message.MessageHandlerImpl;
import fr.ms.log4jdbc.proxy.Handlers;
import fr.ms.log4jdbc.sql.QuerySQLFactory;
import fr.ms.log4jdbc.sql.impl.WrapperQuery;

/**
 * 
 * @see Marco4J
 * 
 * 
 * @author Marco Semiao
 * 
 */
public class ConnectionHandler implements MessageFactory {

  public MessageHandlerImpl transformMessage(final Object proxy, final Method method, final Object[] args,
      final MessageInvocationContext mic, final MessageHandlerImpl message) {
    final TimeInvocation timeInvocation = mic.getInvokeTime();
    final JdbcContext jdbcContext = mic.getJdbcContext();

    final Object invoke = timeInvocation.getInvoke();

    final String nameMethod = method.getName();

    boolean commitMethod = nameMethod.equals("commit");

    final boolean setAutoCommitMethod = nameMethod.equals("setAutoCommit");
    if (setAutoCommitMethod) {
      final Boolean autoCommit = (Boolean) args[0];
      final boolean etatActuel = jdbcContext.isAutoCommit();
      jdbcContext.setAutoCommit(autoCommit.booleanValue());

      if (etatActuel == false && jdbcContext.isAutoCommit()) {
        commitMethod = true;
      }
    }

    if (commitMethod) {
      jdbcContext.getTransactionContext().commit();
      jdbcContext.resetTransaction();
    }

    final boolean rollbackMethod = nameMethod.equals("rollback");
    if (rollbackMethod) {
      jdbcContext.getTransactionContext().rollback(invoke);
      if (invoke == null) {
        jdbcContext.resetTransaction();
      }
    }

    final boolean setSavepointMethod = nameMethod.equals("setSavepoint");
    if (setSavepointMethod) {
      jdbcContext.getTransactionContext().setSavePoint(invoke);
    }

    final boolean closeMethod = nameMethod.equals("close");
    if (closeMethod) {
      jdbcContext.getOpenConnection().decrementAndGet();
    }
    return message;
  }

  public Object wrap(final Object invoke, final Object[] args, final MessageInvocationContext mic) {
    if (invoke != null) {
      final JdbcContext jdbcContext = mic.getJdbcContext();
      if (invoke instanceof CallableStatement) {
        final CallableStatement callableStatement = (CallableStatement) invoke;
        final String sql = (String) args[0];
        final QuerySQLFactory queryFactory = WrapperQuery.getQuerySQLNamed();
        return Handlers.getCallableStatement(callableStatement, jdbcContext, queryFactory, sql);
      } else if (invoke instanceof PreparedStatement) {
        final PreparedStatement preparedStatement = (PreparedStatement) invoke;
        final String sql = (String) args[0];
        final QuerySQLFactory queryFactory = WrapperQuery.getQuerySQL();
        return Handlers.getPreparedStatement(preparedStatement, jdbcContext, queryFactory, sql);
      } else if (invoke instanceof Statement) {
        final Statement statement = (Statement) invoke;
        final QuerySQLFactory queryFactory = WrapperQuery.getQuerySQL();
        return Handlers.getStatement(statement, jdbcContext, queryFactory);
      }
    }
    return invoke;
  }
}