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/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * 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.
 */
package org.jetbrains.idea.maven.compiler;

import com.intellij.compiler.CompilerTestUtil;
import com.intellij.compiler.artifacts.ArtifactsTestUtil;
import com.intellij.compiler.impl.ModuleCompileScope;
import com.intellij.openapi.compiler.CompileScope;
import com.intellij.openapi.compiler.CompilerMessage;
import com.intellij.openapi.compiler.CompilerMessageCategory;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.packaging.artifacts.Artifact;
import com.intellij.packaging.impl.compiler.ArtifactCompileScope;
import com.intellij.testFramework.CompilerTester;
import com.intellij.util.io.TestFileSystemBuilder;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.idea.maven.MavenImportingTestCase;
import org.jetbrains.idea.maven.project.MavenProjectsManager;
import org.jetbrains.idea.maven.project.MavenResourceCompilerConfigurationGenerator;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * @author nik
 */
public abstract class MavenCompilingTestCase extends MavenImportingTestCase {
  protected void tearDown() throws Exception {
    try {
      CompilerTestUtil.disableExternalCompiler(myProject);
    }
    finally {
      super.tearDown();
    }
  }

  protected void compileModules(final String... moduleNames) {
    compile(createModulesCompileScope(moduleNames));
  }

  protected void buildArtifacts(String... artifactNames) {
    compile(createArtifactsScope(artifactNames));
  }

  private void compile(final CompileScope scope) {
    try {
      CompilerTester tester = new CompilerTester(myProject, Arrays.asList(scope.getAffectedModules()));
      UIUtil.invokeAndWaitIfNeeded(new Runnable() {
        @Override
        public void run() {
          new MavenResourceCompilerConfigurationGenerator(myProject, MavenProjectsManager.getInstance(myProject).getProjectsTreeForTests())
            .generateBuildConfiguration(false);
        }
      });
      try {
        List<CompilerMessage> messages = tester.make(scope);
        for (CompilerMessage message : messages) {
          if (message.getCategory() == CompilerMessageCategory.ERROR) {
            fail("Compilation failed with error: " + message.getMessage());
          }
        }
      }
      finally {
        tester.tearDown();
      }
    }
    catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  private CompileScope createArtifactsScope(String[] artifactNames) {
    List<Artifact> artifacts = new ArrayList<Artifact>();
    for (String name : artifactNames) {
      artifacts.add(ArtifactsTestUtil.findArtifact(myProject, name));
    }
    return ArtifactCompileScope.createArtifactsScope(myProject, artifacts);
  }

  private CompileScope createModulesCompileScope(final String[] moduleNames) {
    final List<Module> modules = new ArrayList<Module>();
    for (String name : moduleNames) {
      modules.add(getModule(name));
    }
    return new ModuleCompileScope(myProject, modules.toArray(new Module[modules.size()]), false);
  }

  protected static void assertResult(VirtualFile pomFile, String relativePath, String content) throws IOException {
    assertEquals(content, loadResult(pomFile, relativePath));
  }

  protected static String loadResult(VirtualFile pomFile, String relativePath) throws IOException {
    File file = new File(pomFile.getParent().getPath(), relativePath);
    assertTrue("file not found: " + relativePath, file.exists());
    return new String(FileUtil.loadFileText(file));
  }

  protected void assertResult(String relativePath, String content) throws IOException {
    assertResult(myProjectPom, relativePath, content);
  }

  protected void assertDirectory(String relativePath, TestFileSystemBuilder fileSystemBuilder) {
    fileSystemBuilder.build().assertDirectoryEqual(new File(myProjectPom.getParent().getPath(), relativePath));
  }

  protected void assertJar(String relativePath, TestFileSystemBuilder fileSystemBuilder) {
    fileSystemBuilder.build().assertFileEqual(new File(myProjectPom.getParent().getPath(), relativePath));
  }
}