/*
    *    Copyright 2009-2023 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.guice.configuration;
  
  import com.google.inject.ProvisionException;
  
  import jakarta.inject.Named;
  import jakarta.inject.Provider;
  import jakarta.inject.Singleton;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import javax.sql.DataSource;
  
  import org.apache.ibatis.executor.ErrorContext;
  import org.apache.ibatis.mapping.DatabaseIdProvider;
  import org.apache.ibatis.mapping.Environment;
  import org.apache.ibatis.session.AutoMappingBehavior;
  import org.apache.ibatis.session.Configuration;
  import org.apache.ibatis.session.ExecutorType;
  import org.mybatis.guice.configuration.settings.ConfigurationSetting;
  import org.mybatis.guice.configuration.settings.MapperConfigurationSetting;
  
  import edu.umd.cs.findbugs.annotations.Nullable;
  
  /**
   * Provides the myBatis Configuration.
   */
  @Singleton
  public class ConfigurationProvider implements Provider<Configuration>, ConfigurationSettingListener {
  
    /**
     * The myBatis Configuration reference.
     */
    private final Environment environment;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.lazyLoadingEnabled")
    private boolean lazyLoadingEnabled = false;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.aggressiveLazyLoading")
    private boolean aggressiveLazyLoading = true;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.multipleResultSetsEnabled")
    private boolean multipleResultSetsEnabled = true;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.useGeneratedKeys")
    private boolean useGeneratedKeys = false;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.useColumnLabel")
    private boolean useColumnLabel = true;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.cacheEnabled")
    private boolean cacheEnabled = true;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.defaultExecutorType")
    private ExecutorType defaultExecutorType = ExecutorType.SIMPLE;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.autoMappingBehavior")
    private AutoMappingBehavior autoMappingBehavior = AutoMappingBehavior.PARTIAL;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.callSettersOnNulls")
    private boolean callSettersOnNulls = false;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.defaultStatementTimeout")
    @Nullable
    private Integer defaultStatementTimeout;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.mapUnderscoreToCamelCase")
    private boolean mapUnderscoreToCamelCase = false;
  
    @com.google.inject.Inject(optional = true)
    @Named("mybatis.configuration.failFast")
    private boolean failFast = false;
  
   @com.google.inject.Inject(optional = true)
   private DatabaseIdProvider databaseIdProvider;
 
   @com.google.inject.Inject
   private DataSource dataSource;
 
   private Set<ConfigurationSetting> configurationSettings = new HashSet<>();
   private Set<MapperConfigurationSetting> mapperConfigurationSettings = new HashSet<>();
 
   /**
    * Instantiates a new configuration provider.
    *
    * @param environment
    *          the environment
    *
    * @since 1.0.1
    */
   @com.google.inject.Inject
   public ConfigurationProvider(final Environment environment) {
     this.environment = environment;
   }
 
   @Deprecated
   public void setEnvironment(Environment environment) {
     // do nothing
   }
 
   /**
    * Flag to check all statements are completed.
    *
    * @param failFast
    *          flag to check all statements are completed
    *
    * @since 1.0.1
    */
   public void setFailFast(boolean failFast) {
     this.failFast = failFast;
   }
 
   @Override
   public void addConfigurationSetting(ConfigurationSetting configurationSetting) {
     this.configurationSettings.add(configurationSetting);
   }
 
   @Override
   public void addMapperConfigurationSetting(MapperConfigurationSetting mapperConfigurationSetting) {
     this.mapperConfigurationSettings.add(mapperConfigurationSetting);
   }
 
   /**
    * New configuration.
    *
    * @param environment
    *          the environment
    *
    * @return new configuration
    */
   protected Configuration newConfiguration(Environment environment) {
     return new Configuration(environment);
   }
 
   @Override
   public Configuration get() {
     final Configuration configuration = newConfiguration(environment);
     configuration.setLazyLoadingEnabled(lazyLoadingEnabled);
     configuration.setAggressiveLazyLoading(aggressiveLazyLoading);
     configuration.setMultipleResultSetsEnabled(multipleResultSetsEnabled);
     configuration.setUseGeneratedKeys(useGeneratedKeys);
     configuration.setUseColumnLabel(useColumnLabel);
     configuration.setCacheEnabled(cacheEnabled);
     configuration.setDefaultExecutorType(defaultExecutorType);
     configuration.setAutoMappingBehavior(autoMappingBehavior);
     configuration.setCallSettersOnNulls(callSettersOnNulls);
     configuration.setDefaultStatementTimeout(defaultStatementTimeout);
     configuration.setMapUnderscoreToCamelCase(mapUnderscoreToCamelCase);
 
     for (ConfigurationSetting setting : configurationSettings) {
       setting.applyConfigurationSetting(configuration);
     }
 
     try {
       if (databaseIdProvider != null) {
         configuration.setDatabaseId(databaseIdProvider.getDatabaseId(dataSource));
       }
 
       for (MapperConfigurationSetting setting : mapperConfigurationSettings) {
         setting.applyConfigurationSetting(configuration);
       }
 
       if (failFast) {
         configuration.getMappedStatementNames();
       }
     } catch (Throwable cause) {
       throw new ProvisionException("An error occurred while building the org.apache.ibatis.session.Configuration",
           cause);
     } finally {
       ErrorContext.instance().reset();
     }
 
     return configuration;
   }
 }