/**
 * This file is part of Eclipse Steady.
 *
 * Licensed 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
 */
package org.eclipse.steady.java;

import static org.junit.Assert.assertEquals;

import java.io.File;
import java.io.IOException;
import java.nio.file.Path;

import org.apache.logging.log4j.Logger;
import org.eclipse.steady.FileAnalysisException;
import org.eclipse.steady.shared.json.JacksonUtil;
import org.eclipse.steady.shared.util.FileUtil;
import org.junit.Test;

public class JsonHelperTest {

  private static final Logger log = org.apache.logging.log4j.LogManager.getLogger();

  /**
   * Analyzes a given JAR twice and checks whether the produced JSON is equal.
   */
  @Test
  public void jarToJsonEqualityTest() throws FileAnalysisException {
    try {
      // Create JSON for the same JAR
      final JarAnalyzer ja1 = new JarAnalyzer();
      ja1.analyze(new File("./src/test/resources/poi-ooxml-schemas-3.11-beta1.jar"));
      final String json1 = JacksonUtil.asJsonString(ja1.getLibrary());
      final JarAnalyzer ja2 = new JarAnalyzer();
      ja2.analyze(new File("./src/test/resources/poi-ooxml-schemas-3.11-beta1.jar"));
      final String json2 = JacksonUtil.asJsonString(ja1.getLibrary());

      // The JSON should be equal. If not, write it to files so that it can be compared
      if (!json1.equals(json2)) {
        final Path p1 = FileUtil.writeToTmpFile(null, "json", json1);
        final Path p2 = FileUtil.writeToTmpFile(null, "json", json2);
        JsonHelperTest.log.info(
            "JSON written to [" + p1.toAbsolutePath() + "] and [" + p2.toAbsolutePath() + "]");
      }

      assertEquals(json1, json2);
    } catch (IllegalStateException ise) {
      // TODO Auto-generated catch block
      ise.printStackTrace();
    } catch (IOException ioe) {
      // TODO Auto-generated catch block
      ioe.printStackTrace();
    }
  }

  /**
   * Analyzes a JAR that contains nested classes (having a $ in their name), but not the surrounding class.
   * In fact, a $ is a permitted character in class names. It is only a convention to not use it.
   */
  @Test
  public void nestedClassesTest() throws FileAnalysisException {
    try {
      final JarAnalyzer ja3 = new JarAnalyzer();
      ja3.analyze(new File("./src/test/resources/diverse.jar"));
      final String pretty_json3 = JacksonUtil.asJsonString(ja3.getLibrary());
      final Path p3 = FileUtil.writeToTmpFile(null, "json", pretty_json3);
      JsonHelperTest.log.info("JSON written to [" + p3.toAbsolutePath() + "]");
    } catch (IllegalStateException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
}
