package com.github.mygreen.supercsv.cellprocessor.constraint;
   
   import java.util.Optional;
   
   import org.supercsv.cellprocessor.ift.CellProcessor;
   
   import com.github.mygreen.supercsv.annotation.constraint.CsvNumberMin;
   import com.github.mygreen.supercsv.builder.Configuration;
   import com.github.mygreen.supercsv.builder.FieldAccessor;
  import com.github.mygreen.supercsv.cellprocessor.ConstraintProcessorFactory;
  import com.github.mygreen.supercsv.cellprocessor.format.TextFormatter;
  import com.github.mygreen.supercsv.cellprocessor.format.TextParseException;
  import com.github.mygreen.supercsv.exception.SuperCsvInvalidAnnotationException;
  import com.github.mygreen.supercsv.localization.MessageBuilder;
  
  
  /**
   * アノテーション{@link CsvNumberMin}をハンドリングして、{@link NumberMin}を作成する。
   *
   * @since 2.0
   * @author T.TSUCHIE
   *
   */
  public class NumberMinFactory<N extends Number & Comparable<N>> implements ConstraintProcessorFactory<CsvNumberMin> {
      
      @Override
      public Optional<CellProcessor> create(final CsvNumberMin anno, final Optional<CellProcessor> next,
              final FieldAccessor field, final TextFormatter<?> formatter, final Configuration config) {
          
          @SuppressWarnings("unchecked")
          final TextFormatter<N> typeFormatter = (TextFormatter<N>)formatter;
                  
          final N min;
          try {
              min = typeFormatter.parse(anno.value());
              
          } catch(TextParseException e) {
              throw new SuperCsvInvalidAnnotationException(anno, MessageBuilder.create("anno.attr.invalidType")
                      .var("property", field.getNameWithClass())
                      .varWithAnno("anno", anno.annotationType())
                      .var("attrName", "value")
                      .var("attrValue", anno.value())
                      .varWithClass("type", field.getType())
                      .var("pattern", typeFormatter.getPattern().orElseGet(null))
                      .format(true), e);
          }
          
          final NumberMin<N> processor = next.map(n -> new NumberMin<N>(min, anno.inclusive(), typeFormatter, n))
                  .orElseGet(() -> new NumberMin<N>(min, anno.inclusive(), typeFormatter));
          
          processor.setValidationMessage(anno.message());
          
          return Optional.of(processor);
      }
      
  }