///////////////////////////////////////////////////////////////////////////////////////////////
   // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
   // Copyright (C) 2001-2026 the original author or authors.
   //
   // This library is free software; you can redistribute it and/or
   // modify it under the terms of the GNU Lesser General Public
   // License as published by the Free Software Foundation; either
   // version 2.1 of the License, or (at your option) any later version.
   //
  // This library 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
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.checks.indentation;
  
  import java.util.Optional;
  
  import com.puppycrawl.tools.checkstyle.api.DetailAST;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  
  /**
   * Handler for member definitions.
   *
   */
  public class MemberDefHandler extends AbstractExpressionHandler {
  
      /**
       * Construct an instance of this handler with the given indentation check,
       * abstract syntax tree, and parent handler.
       *
       * @param indentCheck   the indentation check
       * @param ast           the abstract syntax tree
       * @param parent        the parent handler
       */
      public MemberDefHandler(IndentationCheck indentCheck,
          DetailAST ast, AbstractExpressionHandler parent) {
          super(indentCheck, "member def", ast, parent);
      }
  
      @Override
      public void checkIndentation() {
          final DetailAST modifiersNode = getMainAst().findFirstToken(TokenTypes.MODIFIERS);
          if (modifiersNode.hasChildren()) {
              checkModifiers();
          }
          else {
              checkType();
          }
          final DetailAST firstNode = getMainAst();
          final DetailAST lastNode = getArrayInitNode(firstNode)
              .orElseGet(() -> getVarDefStatementSemicolon(firstNode));
  
          if (lastNode != null) {
              checkWrappingIndentation(firstNode, lastNode);
          }
      }
  
      /**
       * Finds the array init node.
       *
       * @param firstNode Node to begin searching
       * @return array init node
       */
      private static Optional<DetailAST> getArrayInitNode(DetailAST firstNode) {
          return Optional.ofNullable(firstNode.findFirstToken(TokenTypes.ASSIGN))
              .map(assign -> {
                  return Optional.ofNullable(assign.findFirstToken(TokenTypes.EXPR))
                      .map(expr -> expr.findFirstToken(TokenTypes.LITERAL_NEW))
                      .orElse(assign);
              })
              .map(node -> node.findFirstToken(TokenTypes.ARRAY_INIT));
      }
  
      @Override
      public IndentLevel getSuggestedChildIndent(AbstractExpressionHandler child) {
          return getIndent();
      }
  
      /**
       * Checks modifiers for member definitions.
       */
      private void checkModifiers() {
          final DetailAST modifier = getMainAst().findFirstToken(TokenTypes.MODIFIERS);
          if (isOnStartOfLine(modifier)
              && !getIndent().isAcceptable(expandedTabsColumnNo(modifier))) {
              logError(modifier, "modifier", expandedTabsColumnNo(modifier));
          }
      }
  
      /**
       * Check the indentation of the method type.
       */
      private void checkType() {
         final DetailAST type = getMainAst().findFirstToken(TokenTypes.TYPE);
         final DetailAST ident = getFirstToken(type);
         final int columnNo = expandedTabsColumnNo(ident);
         if (isOnStartOfLine(ident) && !getIndent().isAcceptable(columnNo)) {
             logError(ident, "type", columnNo);
         }
     }
 
     /**
      * Returns semicolon for variable definition statement.
      *
      * @param variableDef
      *          ast node of type TokenTypes.VARIABLE_DEF
      * @return ast node of type TokenTypes.SEMI
      */
     private static DetailAST getVarDefStatementSemicolon(DetailAST variableDef) {
         DetailAST lastNode = variableDef.getLastChild();
         if (lastNode.getType() != TokenTypes.SEMI) {
             lastNode = variableDef.getNextSibling();
         }
         return lastNode;
     }
 
 }