/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
  */
  package org.apache.rat.anttasks;
  
  import java.util.regex.Matcher;
  import org.apache.commons.io.IOUtils;
  import org.apache.tools.ant.BuildFileRule;
  
  import java.io.File;
  import java.io.FileReader;
  import java.io.IOException;
  import java.util.regex.Pattern;
  import org.junit.jupiter.api.BeforeEach;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  public abstract class AbstractRatAntTaskTest {
      private static final File tempDir = new File("target/anttasks");
  
      public final BuildFileRule buildRule = new BuildFileRule();
  
      protected abstract File getAntFile();
  
      protected File getTempDir() {
          return tempDir;
      }
  
      @BeforeEach
      public void setUp() {
          buildRule.configureProject(getAntFile().getPath());
          buildRule.getProject().setProperty("output.dir", tempDir.getAbsolutePath());
          buildRule.getProject().setProperty("resource.dir", getAntFile().getParent());
      }
  
      protected void assertLogDoesNotMatch(String pPattern) {
          final String log = buildRule.getLog();
          final Matcher matcher = Pattern.compile(pPattern).matcher(log);
  
          assertThat(matcher.find()).describedAs("Log matches the pattern: {}",pPattern).isFalse();
      }
  
      protected void assertLogMatches(String pPattern) {
          final String log = buildRule.getLog();
          final Matcher matcher = Pattern.compile(pPattern).matcher(log);
          assertThat(matcher.find()).describedAs("Log does not the pattern: {}",pPattern).isTrue();
      }
  
      private String load(File pFile) throws IOException {
          FileReader fr = new FileReader(pFile);
          try {
              final StringBuilder sb = new StringBuilder();
              char[] buffer = new char[1024];
              for (;;) {
                  int res = fr.read(buffer);
                  if (res == -1) {
                      fr.close();
                      fr = null;
                      return sb.toString();
                  }
                  if (res > 0) {
                      sb.append(buffer, 0, res);
                  }
              }
          } finally {
              IOUtils.closeQuietly(fr);
          }
      }
  
      protected void assertFileMatches(File pFile, String pPattern)
              throws IOException {
          final String content = load(pFile);
          final Matcher matcher = Pattern.compile(pPattern).matcher(content);
          assertThat(matcher.find()).describedAs("File {} doesn't match the pattern:{} ", pFile, pPattern).isTrue();
      }
  }