package emissary.output.io;
   
   import emissary.directory.EmissaryNode;
   import emissary.test.core.junit5.UnitTest;
   import emissary.util.io.FileNameGenerator;
   
   import com.google.common.base.Splitter;
   import org.apache.commons.lang3.StringUtils;
   import org.apache.commons.lang3.math.NumberUtils;
  import org.junit.jupiter.api.Test;
  
  import java.util.List;
  import java.util.UUID;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  class DateFilterFilenameGeneratorTest extends UnitTest {
  
      private static final String FAKE_FILTER = "fakeFilter";
      private static final String FAKE_FILTER_DASH = "fake-filter";
      private static final String FAKE_FILTER_UNDERSCORE = "fake_filter";
  
      @Test
      void testDateFilterFilenameGenerator() {
          FileNameGenerator fileNameGenerator = new DateFilterFilenameGenerator(FAKE_FILTER);
  
          String filename1 = fileNameGenerator.nextFileName();
          String filename2 = fileNameGenerator.nextFileName();
          List<String> filename1Parts = Splitter.onPattern(String.valueOf(DateFilterFilenameGenerator.DELIMITER)).splitToList(filename1);
  
          // Test Uniqueness
          assertNotEquals(filename1, filename2);
  
          // Test that filename starts with date (11 digits)
          assertTrue(NumberUtils.isDigits(filename1Parts.get(0)));
          assertEquals(11, filename1Parts.get(0).length());
  
          // Test that uuid is valid
          assertEquals(UUID.fromString(filename1Parts.get(1)).toString(), filename1Parts.get(1));
  
          // Test that filename has 4 parts and filter name is present at the end
          assertEquals(4, filename1Parts.size());
          assertEquals(FAKE_FILTER, filename1Parts.get(filename1Parts.size() - 1));
      }
  
      @Test
      void testFilterDelimiterReplacement() {
          FileNameGenerator fileNameGenerator = new DateFilterFilenameGenerator(FAKE_FILTER_UNDERSCORE);
          String filename = fileNameGenerator.nextFileName();
          List<String> filenameParts = Splitter.onPattern(String.valueOf(DateFilterFilenameGenerator.DELIMITER)).splitToList(filename);
  
          assertNotEquals(FAKE_FILTER_UNDERSCORE, filenameParts.get(3));
          assertEquals(FAKE_FILTER_DASH, filenameParts.get(3));
      }
  
      @Test
      void testEmptyFilter() {
          FileNameGenerator fileNameGenerator = new DateFilterFilenameGenerator(StringUtils.EMPTY);
          String filename = fileNameGenerator.nextFileName();
          List<String> filenameParts = Splitter.onPattern(String.valueOf(DateFilterFilenameGenerator.DELIMITER)).splitToList(filename);
  
          // Only expect 3 parts now and that node name is the last element
          assertEquals(3, filenameParts.size());
          assertEquals(System.getProperty(EmissaryNode.NODE_NAME_PROPERTY), filenameParts.get(filenameParts.size() - 1));
      }
  
  
  }