/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.model.processor.conditional;
  
  import ch.qos.logback.core.Context;
  import ch.qos.logback.core.model.Model;
  import ch.qos.logback.core.model.conditional.IfModel;
  import ch.qos.logback.core.model.conditional.IfModel.BranchState;
  import ch.qos.logback.core.model.conditional.ThenModel;
  import ch.qos.logback.core.model.processor.ModelHandlerBase;
  import ch.qos.logback.core.model.processor.ModelHandlerException;
  import ch.qos.logback.core.model.processor.ModelInterpretationContext;
  
  import static ch.qos.logback.core.spi.ErrorCodes.MISSING_IF_EMPTY_MODEL_STACK;
  
  public class ThenModelHandler extends ModelHandlerBase {
  
      public ThenModelHandler(Context context) {
          super(context);
      }
  
      static public ModelHandlerBase makeInstance(Context context, ModelInterpretationContext ic) {
          return new ThenModelHandler(context);
      }
  
      @Override
      protected Class<ThenModel> getSupportedModelClass() {
          return ThenModel.class;
      }
  
      @Override
      public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
  
          ThenModel thenModel = (ThenModel) model;
  
          if(mic.isModelStackEmpty()) {
              addError(MISSING_IF_EMPTY_MODEL_STACK);
              thenModel.markAsSkipped();
              return;
          }
          Model parent = mic.peekModel();
  
          if (!(parent instanceof IfModel)) {
              addError("Unexpected type for parent model [" + parent + "]");
              thenModel.markAsSkipped();
              return;
          }
                
          IfModel ifModel = (IfModel) parent;
          if(ifModel.getBranchState() != BranchState.IF_BRANCH) {
              thenModel.deepMarkAsSkipped();
          }
      }
  
  }