/*
    * 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.maven.surefire.its.fixture;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.net.URI;
  import java.nio.charset.Charset;
  import java.util.List;
  
  import junit.framework.Assert;
  import org.apache.commons.io.FileUtils;
  import org.hamcrest.Matcher;
  
  import static java.nio.charset.Charset.defaultCharset;
  import static junit.framework.Assert.assertFalse;
  import static junit.framework.Assert.assertTrue;
  import static org.hamcrest.Matchers.containsString;
  
  /**
   * @author Kristian Rosenvold
   */
  public class TestFile {
      private final File file;
  
      private final Charset encoding;
  
      private final OutputValidator surefireVerifier;
  
      public TestFile(File file, OutputValidator surefireVerifier) {
          this(file, defaultCharset(), surefireVerifier);
      }
  
      public TestFile(File file, Charset charset, OutputValidator surefireVerifier) {
          try {
              this.file = file.getCanonicalFile();
              this.encoding = charset == null ? defaultCharset() : charset;
              this.surefireVerifier = surefireVerifier;
          } catch (IOException e) {
              throw new IllegalArgumentException(file.getPath());
          }
      }
  
      public OutputValidator assertFileExists() {
          assertTrue("File doesn't exist: " + file.getAbsolutePath(), file.exists());
          return surefireVerifier;
      }
  
      public OutputValidator assertFileNotExists() {
          assertFalse("File doesn't exist: " + file.getAbsolutePath(), file.exists());
          return surefireVerifier;
      }
  
      public void delete() {
          //noinspection ResultOfMethodCallIgnored
          file.delete();
      }
  
      public String getAbsolutePath() {
          return file.getAbsolutePath();
      }
  
      public boolean exists() {
          return file.exists();
      }
  
      public FileInputStream getFileInputStream() throws FileNotFoundException {
          return new FileInputStream(file);
      }
  
      public String slurpFile() {
          StringBuilder sb = new StringBuilder();
          try (BufferedReader reader = new BufferedReader(new InputStreamReader(getFileInputStream(), encoding))) {
              for (String line = reader.readLine(); line != null; line = reader.readLine()) {
                  sb.append(line);
              }
              return sb.toString();
          } catch (IOException e) {
              throw new SurefireVerifierException(e);
         }
     }
 
     public String readFileToString() {
         try {
             return FileUtils.readFileToString(file, encoding);
         } catch (IOException e) {
             throw new SurefireVerifierException(e);
         }
     }
 
     public boolean isFile() {
         return file.isFile();
     }
 
     public TestFile assertContainsText(Matcher<String> matcher) {
         final List<String> list = surefireVerifier.loadFile(file, encoding);
         for (String line : list) {
             if (matcher.matches(line)) {
                 return this;
             }
         }
         Assert.fail("Did not find expected message in log");
         return null;
     }
 
     public TestFile assertContainsText(String text) {
         return assertContainsText(containsString(text));
     }
 
     public TestFile assertNotContainsText(Matcher<String> matcher) {
         final List<String> list = surefireVerifier.loadFile(file, encoding);
         for (String line : list) {
             if (matcher.matches(line)) {
                 Assert.fail("Found unexpected message in log");
                 return null;
             }
         }
         return this;
     }
 
     public TestFile assertNotContainsText(String text) {
         return assertNotContainsText(containsString(text));
     }
 
     public URI toURI() {
         return file.toURI();
     }
 
     public File getFile() {
         return file;
     }
 }