package lv.id.jc.piglatin.core;
   
   import java.util.function.Function;
   import java.util.function.UnaryOperator;
   import java.util.regex.MatchResult;
   import java.util.regex.Matcher;
   
   import org.springframework.beans.factory.annotation.Qualifier;
   import org.springframework.stereotype.Component;
  import org.springframework.validation.annotation.Validated;
  
  
  /**
   * The PhraseTranslator class translates a phrase to Pig Latin.
   */
  @Component("phraseTranslator")
  public class PhraseTranslator implements UnaryOperator<String> {
      private final Function<String, Matcher> wordMatcher;
      private final Function<MatchResult, String> pigLatinTranslator;
  
      /**
       * Constructs a new PhraseTranslator.
       *
       * @param wordMatcher a function that takes a string and returns a Matcher for words in the string
       * @param wordTranslator a function that takes a string and translates it to Pig Latin
       */
      public PhraseTranslator(
          Function<String, Matcher> wordMatcher,
          @Validated @Qualifier("wordTranslator")
          UnaryOperator<String> wordTranslator
      ) {
          this.wordMatcher = wordMatcher;
          this.pigLatinTranslator = wordTranslator.compose(MatchResult::group);
      }
  
      /**
       * Translates a phrase to Pig Latin.
       *
       * @param phrase the phrase to translate
       * @return the translated phrase
       */
      @Override
      public String apply(String phrase) {
          return wordMatcher.apply(phrase).replaceAll(pigLatinTranslator);
      }
  }