/*
    * CSVeed (https://github.com/42BV/CSVeed)
    *
    * Copyright 2013-2023 CSVeed.
    *
    * All rights reserved. This program and the accompanying materials
    * are made available under the terms of The Apache Software License,
    * Version 2.0 which accompanies this distribution, and is available at
    * https://www.apache.org/licenses/LICENSE-2.0.txt
   */
  package org.csveed.report;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * The Class RowReport.
   */
  public class RowReport {
  
      /** The row. */
      private String row;
  
      /** The start. */
      private int start;
  
      /** The end. */
      private int end;
  
      /**
       * Instantiates a new row report.
       *
       * @param row
       *            the row
       * @param start
       *            the start
       * @param end
       *            the end
       */
      public RowReport(String row, int start, int end) {
          this.row = row;
          this.start = start;
          this.end = start == end && start < row.length() ? start + 1 : end;
      }
  
      /**
       * Gets the row.
       *
       * @return the row
       */
      public String getRow() {
          return row;
      }
  
      /**
       * Gets the start.
       *
       * @return the start
       */
      public int getStart() {
          return start;
      }
  
      /**
       * Gets the end.
       *
       * @return the end
       */
      public int getEnd() {
          return end;
      }
  
      /**
       * Tokenize.
       *
       * @return the list
       */
      public List<RowPart> tokenize() {
          List<RowPart> lines = new ArrayList<>();
          if (start > 0) {
              lines.add(new RowPart(row.substring(0, start), false));
          }
          if (end - start > 0) {
              lines.add(new RowPart(row.substring(start, end), true));
          }
          if (end < row.length()) {
              lines.add(new RowPart(row.substring(end), false));
          }
          return lines;
      }
  
      /**
       * Gets the printable lines.
       *
       * @return the printable lines
       */
      public List<String> getPrintableLines() {
          List<String> lines = new ArrayList<>();
  
         List<RowPart> parts = tokenize();
 
         lines.add(createContentLine(parts));
         lines.add(createFocusLine(parts));
 
         return lines;
     }
 
     /**
      * Creates the content line.
      *
      * @param parts
      *            the parts
      *
      * @return the string
      */
     private String createContentLine(List<RowPart> parts) {
         StringBuilder line = new StringBuilder();
         for (RowPart token : parts) {
             line.append(token.getToken());
         }
         return line.toString();
     }
 
     /**
      * Creates the focus line.
      *
      * @param parts
      *            the parts
      *
      * @return the string
      */
     private String createFocusLine(List<RowPart> parts) {
         StringBuilder line = new StringBuilder();
         boolean placedMarkers = false;
         for (RowPart token : parts) {
             if (token.isHighlight()) {
                 line.append(printUnderscoredPart(token));
                 placedMarkers = true;
             } else {
                 line.append(printEmptyPart(token));
             }
         }
         if (!placedMarkers) { // Essentially only at the end-of-line
             line.append('^');
         }
         return line.toString();
     }
 
     /**
      * Prints the empty part.
      *
      * @param token
      *            the token
      *
      * @return the string
      */
     private String printEmptyPart(RowPart token) {
         StringBuilder linePart = new StringBuilder();
         for (int i = 0; i < token.getToken().length(); i++) {
             linePart.append(' ');
         }
         return linePart.toString();
     }
 
     /**
      * Prints the underscored part.
      *
      * @param token
      *            the token
      *
      * @return the string
      */
     private String printUnderscoredPart(RowPart token) {
         StringBuilder linePart = new StringBuilder();
         for (int i = 0; i < token.getToken().length(); i++) {
             if (i == 0 || i == token.getToken().length() - 1) {
                 linePart.append('^');
             } else {
                 linePart.append('-');
             }
         }
         return linePart.toString();
     }
 
 }