/*
    * 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.File;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.plugin.surefire.log.api.ConsoleLogger;
  import org.apache.maven.plugin.surefire.log.api.PrintStreamLogger;
  import org.apache.maven.plugins.surefire.report.ReportTestSuite;
  import org.apache.maven.plugins.surefire.report.SurefireReportParser;
  
  import static java.lang.Double.parseDouble;
  import static java.nio.charset.StandardCharsets.UTF_8;
  import static junit.framework.Assert.assertEquals;
  import static junit.framework.Assert.assertFalse;
  import static junit.framework.Assert.assertTrue;
  import static org.junit.Assume.assumeTrue;
  
  /**
   *
   */
  @SuppressWarnings({"JavaDoc"})
  public final class HelperAssertions {
      private HelperAssertions() {
          throw new IllegalStateException("no instantiable constructor");
      }
  
      /**
       * assert that the reports in the specified testDir have the right summary statistics
       */
      public static void assertTestSuiteResults(int total, int errors, int failures, int skipped, File testDir) {
          IntegrationTestSuiteResults suite = parseTestResults(testDir);
          assertTestSuiteResults(total, errors, failures, skipped, suite);
      }
  
      public static void assertTestSuiteResults(
              int total, int errors, int failures, int skipped, int flakes, File testDir) {
          IntegrationTestSuiteResults suite = parseTestResults(testDir);
          assertTestSuiteResults(total, errors, failures, skipped, flakes, suite);
      }
  
      public static void assertTestSuiteResults(int total, File testDir) {
          IntegrationTestSuiteResults suite = parseTestResults(testDir);
          assertTestSuiteResults(total, suite);
      }
  
      /**
       * assert that the reports in the specified testDir have the right summary statistics
       */
      public static void assertIntegrationTestSuiteResults(
              int total, int errors, int failures, int skipped, File testDir) {
          IntegrationTestSuiteResults suite = parseIntegrationTestResults(testDir);
          assertTestSuiteResults(total, errors, failures, skipped, suite);
      }
  
      public static void assertIntegrationTestSuiteResults(int total, File testDir) {
          IntegrationTestSuiteResults suite = parseIntegrationTestResults(testDir);
          assertTestSuiteResults(total, suite);
      }
  
      public static void assertTestSuiteResults(
              int total, int errors, int failures, int skipped, IntegrationTestSuiteResults actualSuite) {
          assertEquals("wrong number of tests", total, actualSuite.getTotal());
          assertEquals("wrong number of errors", errors, actualSuite.getErrors());
          assertEquals("wrong number of failures", failures, actualSuite.getFailures());
          assertEquals("wrong number of skipped", skipped, actualSuite.getSkipped());
      }
  
      public static void assertTestSuiteResults(int total, IntegrationTestSuiteResults actualSuite) {
          assertEquals("wrong number of tests", total, actualSuite.getTotal());
      }
  
      public static void assertTestSuiteResults(
              int total, int errors, int failures, int skipped, int flakes, IntegrationTestSuiteResults actualSuite) {
          assertTestSuiteResults(total, errors, failures, skipped, actualSuite);
          assertEquals("wrong number of flaky tests", flakes, actualSuite.getFlakes());
      }
  
      public static IntegrationTestSuiteResults parseTestResults(File... testDirs) {
          List<ReportTestSuite> reports = extractReports(testDirs);
          return parseReportList(reports);
     }
 
     private static IntegrationTestSuiteResults parseIntegrationTestResults(File... testDirs) {
         List<ReportTestSuite> reports = extractITReports(testDirs);
         return parseReportList(reports);
     }
 
     /**
      * Converts a list of ReportTestSuites into an IntegrationTestSuiteResults object, suitable for summary assertions
      */
     public static IntegrationTestSuiteResults parseReportList(List<ReportTestSuite> reports) {
         assertFalse("No reports!", reports.isEmpty());
         int total = 0, errors = 0, failures = 0, skipped = 0, flakes = 0;
         for (ReportTestSuite report : reports) {
             total += report.getNumberOfTests();
             errors += report.getNumberOfErrors();
             failures += report.getNumberOfFailures();
             skipped += report.getNumberOfSkipped();
             flakes += report.getNumberOfFlakes();
         }
         return new IntegrationTestSuiteResults(total, errors, failures, skipped, flakes);
     }
 
     public static List<ReportTestSuite> extractReports(File... testDirs) {
         List<File> reportsDirs = new ArrayList<>();
         for (File testDir : testDirs) {
             File reportsDir = new File(testDir, "target/surefire-reports");
             assertTrue("Reports directory is missing: " + reportsDir.getAbsolutePath(), reportsDir.exists());
             reportsDirs.add(reportsDir);
         }
         ConsoleLogger logger = new PrintStreamLogger(System.out);
         SurefireReportParser parser = new SurefireReportParser(reportsDirs, logger);
         try {
             return parser.parseXMLReportFiles();
         } catch (Exception e) {
             throw new RuntimeException("Couldn't parse XML reports", e);
         }
     }
 
     private static List<ReportTestSuite> extractITReports(File... testDirs) {
         List<File> reportsDirs = new ArrayList<>();
         for (File testDir : testDirs) {
             File reportsDir = new File(testDir, "target/failsafe-reports");
             assertTrue("Reports directory is missing: " + reportsDir.getAbsolutePath(), reportsDir.exists());
             reportsDirs.add(reportsDir);
         }
         ConsoleLogger logger = new PrintStreamLogger(System.out);
         SurefireReportParser parser = new SurefireReportParser(reportsDirs, logger);
         try {
             return parser.parseXMLReportFiles();
         } catch (Exception e) {
             throw new RuntimeException("Couldn't parse XML reports", e);
         }
     }
 
     public static void assumeJavaVersion(double expectedVersion) {
         String thisVersion = System.getProperty("java.specification.version");
         assumeTrue("java.specification.version: " + thisVersion, parseDouble(thisVersion) >= expectedVersion);
     }
 
     public static void assumeJavaMaxVersion(double expectedMaxVersion) {
         String thisVersion = System.getProperty("java.specification.version");
         assumeTrue("java.specification.version: " + thisVersion, parseDouble(thisVersion) <= expectedMaxVersion);
     }
 
     public static void assumeJavaVersionExcluded(double excludedVersion) {
         String thisVersion = System.getProperty("java.specification.version");
         assumeTrue("java.specification.version: " + thisVersion, parseDouble(thisVersion) != excludedVersion);
     }
 
     public static String convertUnicodeToUTF8(String unicode) {
         return new String(unicode.getBytes(UTF_8), UTF_8);
     }
 }