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/*
 * 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 com.googlecode.jdbcproc.daofactory.guice;

import com.google.inject.Inject;
import com.googlecode.jdbcproc.daofactory.DAOMethodInfo;
import com.googlecode.jdbcproc.daofactory.IMetaLoginInfoService;
import com.googlecode.jdbcproc.daofactory.annotation.AStoredProcedure;
import com.googlecode.jdbcproc.daofactory.impl.DaoMethodInvoker;
import com.googlecode.jdbcproc.daofactory.impl.block.BlockFactoryUtils;
import com.googlecode.jdbcproc.daofactory.impl.block.service.CallableStatementExecutorBlockService;
import com.googlecode.jdbcproc.daofactory.impl.block.service.OutputParametersGetterBlockService;
import com.googlecode.jdbcproc.daofactory.impl.block.service.ParametersSetterBlockService;
import com.googlecode.jdbcproc.daofactory.impl.block.service.RegisterOutParametersBlockService;
import com.googlecode.jdbcproc.daofactory.impl.block.service.ResultSetConverterBlockService;
import com.googlecode.jdbcproc.daofactory.impl.dbstrategy.ICallableStatementGetStrategyFactory;
import com.googlecode.jdbcproc.daofactory.impl.dbstrategy.ICallableStatementSetStrategyFactory;
import com.googlecode.jdbcproc.daofactory.impl.parameterconverter.ParameterConverterService;
import com.googlecode.jdbcproc.daofactory.impl.procedureinfo.IStoredProcedureInfoManager;
import com.googlecode.jdbcproc.daofactory.impl.procedureinfo.StoredProcedureInfo;

import java.lang.reflect.Method;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.util.Assert;

public class DaoMethodInfoGuice implements DAOMethodInfo {

  private final Logger LOG = LoggerFactory.getLogger(getClass());

  private final JdbcTemplate jdbcTemplate;
  private final ParameterConverterService parameterConverterService;
  private final CallableStatementExecutorBlockService callableStatementExecutorBlockService;
  private final OutputParametersGetterBlockService outputParametersGetterBlockService;
  private final ParametersSetterBlockService parametersSetterBlockService;
  private final RegisterOutParametersBlockService registerOutParametersBlockService;
  private final ResultSetConverterBlockService resultSetConverterBlockService;
  private final IStoredProcedureInfoManager storedProcedureInfoManager;
  private IMetaLoginInfoService metaLoginInfoService;
  private final ICallableStatementSetStrategyFactory callableStatementSetStrategy;
  private final ICallableStatementGetStrategyFactory preparedStatementStrategy;


    @Inject
  public DaoMethodInfoGuice(JdbcTemplate jdbcTemplate,
      ParameterConverterService parameterConverterService,
      CallableStatementExecutorBlockService callableStatementExecutorBlockService,
      OutputParametersGetterBlockService outputParametersGetterBlockService,
      ParametersSetterBlockService parametersSetterBlockService,
      RegisterOutParametersBlockService registerOutParametersBlockService,
      ResultSetConverterBlockService resultSetConverterBlockService,
      IStoredProcedureInfoManager storedProcedureInfoManager,
      ICallableStatementSetStrategyFactory aCallableStatementSetStrategy,
      ICallableStatementGetStrategyFactory aPreparedStatementStrategy
    ) throws Exception {
    this.jdbcTemplate = jdbcTemplate;
    this.parameterConverterService = parameterConverterService;
    this.callableStatementExecutorBlockService = callableStatementExecutorBlockService;
    this.outputParametersGetterBlockService = outputParametersGetterBlockService;
    this.parametersSetterBlockService = parametersSetterBlockService;
    this.registerOutParametersBlockService = registerOutParametersBlockService;
    this.resultSetConverterBlockService = resultSetConverterBlockService;
    this.storedProcedureInfoManager = storedProcedureInfoManager;
    callableStatementSetStrategy = aCallableStatementSetStrategy;
    preparedStatementStrategy = aPreparedStatementStrategy;
  }

  @Inject(optional = true)
  public void setMetaLoginInfoService(IMetaLoginInfoService metaLoginInfoService) {
    this.metaLoginInfoService = metaLoginInfoService;
  }
  
  /**
   * Creates method info for bets performance
   * @param daoMethod method
   * @return method info
   */
  public DaoMethodInvoker createDaoMethodInvoker(Method daoMethod) {
    AStoredProcedure procedureAnnotation = daoMethod.getAnnotation(AStoredProcedure.class);
    Assert.notNull(procedureAnnotation, "Method must have @AStoredProcedure annotation");

    String procedureName = procedureAnnotation.name();
    Assert.hasText(procedureName, "Method " + daoMethod.toString()
        + " has empty name() parameter in @AStoredProcedure annotation");

    StoredProcedureInfo procedureInfo = storedProcedureInfoManager.getProcedureInfo(procedureName);
    if(LOG.isDebugEnabled()) {
      LOG.debug("      Found procedure info: "+procedureInfo);
    }
    Assert.notNull(procedureInfo, "There is no procedure '" + procedureName + "' in database");

    String callString = createCallString(procedureInfo);

    boolean isReturnIterator = BlockFactoryUtils.isReturnIterator(daoMethod);

      return new DaoMethodInvoker(procedureInfo.getProcedureName(), callString
        , registerOutParametersBlockService.create(procedureInfo)
        , parametersSetterBlockService.create(jdbcTemplate, parameterConverterService, daoMethod
            , procedureInfo, metaLoginInfoService)
        , callableStatementExecutorBlockService.create(daoMethod, procedureInfo)
        , outputParametersGetterBlockService.create(parameterConverterService, daoMethod
            , procedureInfo)
        , resultSetConverterBlockService.create(daoMethod, procedureInfo, parameterConverterService)
        , isReturnIterator
        , callableStatementSetStrategy
        , preparedStatementStrategy
    );
  }

  /**
   * Create call query string.
   * 

* For example: * * { call create_processors( ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? , ? ) } * * * @param procedureInfo procedure info * @return call string */ private String createCallString(StoredProcedureInfo procedureInfo) { StringBuilder sb = new StringBuilder(); sb.append("{ call "); sb.append(procedureInfo.getProcedureName()); sb.append("("); for (int i = 0; i < procedureInfo.getArgumentsCounts(); i++) { if (i > 0) { sb.append(", ? "); } else { sb.append(" ? "); } } sb.append(") }"); return sb.toString(); } @Override public String toString() { return "DaoMethodInfoGuice{" + "jdbcTemplate=" + jdbcTemplate + ", parameterConverterService=" + parameterConverterService + ", callableStatementExecutorBlockService=" + callableStatementExecutorBlockService + ", outputParametersGetterBlockService=" + outputParametersGetterBlockService + ", parametersSetterBlockService=" + parametersSetterBlockService + ", registerOutParametersBlockService=" + registerOutParametersBlockService + ", resultSetConverterBlockService=" + resultSetConverterBlockService + ", storedProcedureInfoManager=" + storedProcedureInfoManager + ", metaLoginInfoService=" + metaLoginInfoService + ", callableStatementSetStrategy=" + callableStatementSetStrategy + ", preparedStatementStrategy=" + preparedStatementStrategy + '}'; } }





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