/**************************************************************************
    *
    * Copyright (c) 2016-2020 Yawg project contributors.
    *
    **************************************************************************/
   
   package com.varmateo.yawg.core;
   
   import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.util.function.Predicate;
  import java.util.stream.Stream;
  
  import io.vavr.collection.List;
  import io.vavr.collection.Seq;
  
  
  /**
   * Used for obtaining the list of entries in a given directory that
   * should be baked.
   */
  /* default */ final class DirEntryScanner {
  
  
      private final Predicate<Path> _entryFilter;
  
  
      /**
       *
       */
      /* default */ DirEntryScanner(final DirBakeOptions options) {
  
          _entryFilter = new DirEntryChecker(options).asPathPredicate();
      }
  
  
      /**
       *
       */
      public Seq<Path> getDirEntries(final Path dirPath)
              throws IOException {
  
          try ( Stream<Path> entries = Files.list(dirPath) ) {
              final Stream<Path> stream =
                      entries
                      .filter(_entryFilter)
                      .sorted();
              return List.ofAll(() -> stream.iterator());
          }
      }
  
  
  }