/*
    * Themis: Java Project Framework
    * Copyright 2012-2026. Tony Washer
    *
    * 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 io.github.tonywasher.joceanus.themis.lethe.analysis;
  
  import io.github.tonywasher.joceanus.oceanus.base.OceanusException;
  import io.github.tonywasher.joceanus.themis.lethe.analysis.ThemisAnalysisContainer.ThemisAnalysisAdoptable;
  import io.github.tonywasher.joceanus.themis.lethe.analysis.ThemisAnalysisIf.ThemisIteratorChain;
  import io.github.tonywasher.joceanus.themis.lethe.analysis.ThemisAnalysisStatement.ThemisAnalysisStatementHolder;
  
  import java.util.ArrayDeque;
  import java.util.ArrayList;
  import java.util.Deque;
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * For construct.
   */
  public class ThemisAnalysisFor
          implements ThemisAnalysisContainer, ThemisAnalysisAdoptable, ThemisAnalysisStatementHolder {
      /**
       * The contents.
       */
      private final Deque<ThemisAnalysisElement> theContents;
  
      /**
       * The headers.
       */
      private final ThemisAnalysisStack theHeaders;
  
      /**
       * The fields.
       */
      private final List<ThemisAnalysisField> theFields;
  
      /**
       * The statements.
       */
      private final List<ThemisAnalysisStatement> theStatements;
  
      /**
       * The number of lines.
       */
      private final int theNumLines;
  
      /**
       * The dataMap.
       */
      private final ThemisAnalysisDataMap theDataMap;
  
      /**
       * The parent.
       */
      private ThemisAnalysisContainer theParent;
  
      /**
       * Constructor.
       *
       * @param pParser the parser
       * @param pLine   the initial for line
       * @throws OceanusException on error
       */
      ThemisAnalysisFor(final ThemisAnalysisParser pParser,
                        final ThemisAnalysisLine pLine) throws OceanusException {
          /* Access details from parser */
          theParent = pParser.getParent();
          theDataMap = new ThemisAnalysisDataMap(theParent.getDataMap());
  
          /* Create the arrays */
          final Deque<ThemisAnalysisElement> myHeaders = ThemisAnalysisBuilder.parseHeaders(pParser, pLine);
          final Deque<ThemisAnalysisElement> myLines = ThemisAnalysisBuilder.processBody(pParser);
          theNumLines = myHeaders.size() + 1;
  
          /* Create a parser */
          theContents = new ArrayDeque<>();
          final ThemisAnalysisParser myParser = new ThemisAnalysisParser(myLines, theContents, this);
          myParser.processLines();
  
          /* Parse the headers */
          theFields = new ArrayList<>();
          theStatements = new ArrayList<>();
          theHeaders = new ThemisAnalysisStack(myHeaders);
      }
  
      @Override
     public Deque<ThemisAnalysisElement> getContents() {
         return theContents;
     }
 
     @Override
     public ThemisAnalysisContainer getParent() {
         return theParent;
     }
 
     @Override
     public void setParent(final ThemisAnalysisContainer pParent) {
         theParent = pParent;
         theDataMap.setParent(pParent.getDataMap());
     }
 
     @Override
     public ThemisAnalysisDataMap getDataMap() {
         return theDataMap;
     }
 
     @Override
     public int getNumLines() {
         return theNumLines;
     }
 
     @Override
     public void postProcessExtras() throws OceanusException {
         parseHeaders();
     }
 
     @Override
     public Iterator<ThemisAnalysisStatement> statementIterator() {
         final Iterator<ThemisAnalysisStatement> myField = ThemisAnalysisField.statementIteratorForFields(theFields);
         final Iterator<ThemisAnalysisStatement> myStatement = theStatements.iterator();
         return new ThemisIteratorChain<>(myField, myStatement);
     }
 
     /**
      * Parse headers.
      *
      * @throws OceanusException on error
      */
     private void parseHeaders() throws OceanusException {
         /* Strip parentheses and create scanner */
         final ThemisAnalysisStack myParts = theHeaders.extractParentheses();
         final ThemisAnalysisScanner myScanner = new ThemisAnalysisScanner(myParts);
 
         /* Determine separator */
         char mySep = ThemisAnalysisChar.COLON;
         if (!myScanner.checkForSeparator(mySep)) {
             mySep = ThemisAnalysisChar.SEMICOLON;
         }
 
         /* Loop through the items */
         boolean isField = true;
         while (myParts.hasLines()) {
             /* Access next part */
             final Deque<ThemisAnalysisElement> myPart = myScanner.scanForSeparator(mySep);
             final ThemisAnalysisStack myStack = new ThemisAnalysisStack(myPart);
             if (myStack.isEmpty()) {
                 continue;
             }
 
             /* Process as field/statement */
             if (isField) {
                 parseField(myStack);
             } else {
                 parseStatement(myStack);
             }
             isField = false;
         }
     }
 
     /**
      * Parse field.
      *
      * @param pField the field
      * @throws OceanusException on error
      */
     private void parseField(final ThemisAnalysisStack pField) throws OceanusException {
         /* Create field for each resource */
         final ThemisAnalysisScanner myScanner = new ThemisAnalysisScanner(pField);
         myScanner.skipGenerics();
         ThemisAnalysisField myLast = null;
         while (pField.hasLines()) {
             final Deque<ThemisAnalysisElement> myResource = myScanner.scanForSeparator(ThemisAnalysisChar.COMMA);
             myLast = myLast == null
                     ? new ThemisAnalysisField(getDataMap(), new ThemisAnalysisStack(myResource))
                     : new ThemisAnalysisField(myLast, new ThemisAnalysisStack(myResource));
             theFields.add(myLast);
         }
     }
 
     /**
      * Parse statements.
      *
      * @param pStatement the statement
      * @throws OceanusException on error
      */
     private void parseStatement(final ThemisAnalysisStack pStatement) throws OceanusException {
         /* Create field for each resource */
         final ThemisAnalysisScanner myScanner = new ThemisAnalysisScanner(pStatement);
         while (pStatement.hasLines()) {
             final Deque<ThemisAnalysisElement> myResource = myScanner.scanForSeparator(ThemisAnalysisChar.COMMA);
             theStatements.add(new ThemisAnalysisStatement(myResource));
         }
     }
 
     @Override
     public String toString() {
         /* Start parameters */
         final StringBuilder myBuilder = new StringBuilder();
 
         /* Build fields */
         boolean bFirst = true;
         for (ThemisAnalysisField myField : theFields) {
             /* Handle separators */
             if (!bFirst) {
                 myBuilder.append(ThemisAnalysisChar.LF);
             } else {
                 bFirst = false;
             }
 
             /* Add parameter */
             myBuilder.append(myField);
         }
 
         /* Build fields */
         for (ThemisAnalysisStatement myStatement : theStatements) {
             /* Handle separators */
             if (!bFirst) {
                 myBuilder.append(ThemisAnalysisChar.LF);
             } else {
                 bFirst = false;
             }
 
             /* Add parameter */
             myBuilder.append(myStatement);
         }
 
         /* Return the string */
         return myBuilder.toString();
     }
 }