/*
    *    Copyright 2006-2026 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.generator.config;
  
  import static org.mybatis.generator.internal.util.StringUtility.stringHasValue;
  import static org.mybatis.generator.internal.util.messages.Messages.getString;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.jspecify.annotations.Nullable;
  import org.mybatis.generator.exception.InvalidConfigurationException;
  
  public class Configuration {
      private final List<Context> contexts;
      private final List<String> classPathEntries;
  
      public Configuration() {
          contexts = new ArrayList<>();
          classPathEntries = new ArrayList<>();
      }
  
      public void addClasspathEntry(@Nullable String entry) {
          if (entry != null) {
              classPathEntries.add(entry);
          }
      }
  
      public List<String> getClassPathEntries() {
          return classPathEntries;
      }
  
      /**
       * This method does a simple validation, it makes sure that all required fields have been filled in and that all
       * implementation classes exist and are of the proper type. It does not do any more complex operations such as
       * validating that database tables exist or validating that named columns exist
       *
       * @throws InvalidConfigurationException
       *             the invalid configuration exception
       */
      public void validate() throws InvalidConfigurationException {
          List<String> errors = new ArrayList<>();
  
          for (String classPathEntry : classPathEntries) {
              if (!stringHasValue(classPathEntry)) {
                  errors.add(getString("ValidationError.19")); //$NON-NLS-1$
                  // only need to state this error once
                  break;
              }
          }
  
          if (contexts.isEmpty()) {
              errors.add(getString("ValidationError.11")); //$NON-NLS-1$
          } else {
              for (Context context : contexts) {
                  context.validate(errors);
              }
          }
  
          if (!errors.isEmpty()) {
              throw new InvalidConfigurationException(getString("ValidationError.32"), errors); //$NON-NLS-1$
          }
      }
  
      public List<Context> getContexts() {
          return contexts;
      }
  
      public void addContext(Context context) {
          contexts.add(context);
      }
  }