package com.intellij.codeInsight.daemon.quickFix;

import com.intellij.codeInsight.daemon.DaemonAnalyzerTestCase;
import com.intellij.codeInsight.daemon.impl.HighlightInfo;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.application.ex.PathManagerEx;
import com.intellij.openapi.components.ProjectComponent;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleManager;
import com.intellij.openapi.module.impl.ModuleManagerImpl;
import com.intellij.openapi.project.ex.ProjectManagerEx;
import com.intellij.openapi.roots.ModifiableRootModel;
import com.intellij.openapi.roots.ModuleRootManager;
import com.intellij.openapi.roots.OrderEntry;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.testFramework.PsiTestUtil;
import org.jetbrains.annotations.NonNls;

import java.util.Collection;
import java.util.List;

/**
 * @author cdr
 */
public class OrderEntryTest extends DaemonAnalyzerTestCase {
  @NonNls private static final String BASE_PATH = "/codeInsight/daemonCodeAnalyzer/quickFix/orderEntry/";

  @Override
  protected void setUpProject() throws Exception {
    final String root = PathManagerEx.getTestDataPath() + BASE_PATH;

    VirtualFile tempProjectRootDir = PsiTestUtil.createTestProjectStructure(getTestName(true), null, FileUtil.toSystemIndependentName(root), myFilesToDelete, false);

    VirtualFile projectFile = tempProjectRootDir.findChild("orderEntry.ipr");

    myProject = ProjectManagerEx.getInstanceEx().loadProject(projectFile.getPath());
    ProjectManagerEx.getInstanceEx().setCurrentTestProject(myProject);
    ModuleManagerImpl mm = (ModuleManagerImpl)ModuleManager.getInstance(myProject);
    mm.projectOpened();
    setUpJdk();
    myModule = ModuleManager.getInstance(getProject()).getModules()[0];
  }

  @Override
  protected void tearDown() throws Exception {
    removeLibs();
    ((ProjectComponent)ModuleManager.getInstance(myProject)).projectClosed();
    super.tearDown();
  }

  private void doTest(String fileName) throws Exception {
    String testFullPath = BASE_PATH + fileName;

    VirtualFile root = ModuleRootManager.getInstance(myModule).getContentRoots()[0].getParent();
    VirtualFile virtualFile = root.findFileByRelativePath(fileName);
    configureByExistingFile(virtualFile);
    Pair<String,Boolean> pair = LightQuickFixTestCase.parseActionHint(getFile(), getFile().getText());
    final String text = pair.getFirst();
    final boolean actionShouldBeAvailable = pair.getSecond().booleanValue();
    Collection<HighlightInfo> infosBefore = highlightErrors();
    final IntentionAction action = findActionWithText(text, infosBefore);

    if (action == null) {
      if (actionShouldBeAvailable) {
        fail("Action with text '" + text + "' is not available in test " + testFullPath+"." +
             "\nAvailable actions are: "+LightQuickFixTestCase.getAvailableActions(getEditor(), getFile())
             +"\nInfos are: "+infosBefore
        );
      }
    }
    else {
      if (!actionShouldBeAvailable) {
        fail("Action '" + text + "' is available in test " + testFullPath);
      }
      ApplicationManager.getApplication().runWriteAction(new Runnable() {
        @Override
        public void run() {
          action.invoke(getProject(), getEditor(), getFile());
        }
      });

      Collection<HighlightInfo> infosAfter = highlightErrors();
      final IntentionAction afterAction = findActionWithText(text, infosAfter);
      if (afterAction != null) {
        fail("Action '" + text + "' is still available after its invocation in test " + testFullPath);
      }
      assertEquals(infosBefore.size()-1, infosAfter.size());
    }
  }

  private IntentionAction findActionWithText(final String actionText, final Collection<HighlightInfo> infos) {
    List<IntentionAction> actions = LightQuickFixTestCase.getAvailableActions(getEditor(), getFile());
    return LightQuickFixTestCase.findActionWithText(actions, actionText);
  }

  public void testAddDependency() throws Exception { doTest("B/src/y/AddDependency.java"); }
  public void testAddLibrary() throws Exception { doTest("B/src/y/AddLibrary.java"); }
  public void testAddCircularDependency() throws Exception {
    final Module a = ModuleManager.getInstance(getProject()).findModuleByName("A");
    final Module b = ModuleManager.getInstance(getProject()).findModuleByName("B");
    ApplicationManager.getApplication().runWriteAction(new Runnable() {
      @Override
      public void run() {
        ModifiableRootModel model = ModuleRootManager.getInstance(a).getModifiableModel();
        model.addModuleOrderEntry(b);
        model.commit();
      }
    });

    try {
      doTest("B/src/y/AddDependency.java");
      fail("user should have been warned");
    }
    catch (RuntimeException e) {
      final String expected = "Adding dependency on module '" + a.getName() + "'" +
                             " will introduce circular dependency between modules '" + a.getName() + "' and '" +
                             b.getName() + "'.\n" + "Add dependency anyway?";
      String message = e.getMessage();
      assertEquals(expected, message);
    }
  }
  public void testAddJunit() throws Exception {
    doTest("A/src/x/DoTest.java");
  }

  public void testAddJunit4() throws Exception {
    doTest("A/src/x/DoTest4.java");
  }

  public void testAddJunit4inJunit() throws Exception {
    doTest("A/src/x/DoTest4junit.java");
  }

  public void testExistingJunit() throws Exception {
    doTest("B/src/y/AddExistingJunit.java");
  }

  private void removeLibs() {
    ApplicationManager.getApplication().runWriteAction(new Runnable() {
      @Override
      public void run() {
        try {
          for (Module module : ModuleManager.getInstance(getProject()).getModules()) {
            ModuleRootManager rootManager = ModuleRootManager.getInstance(module);
            ModifiableRootModel model = rootManager.getModifiableModel();
            for (OrderEntry orderEntry : model.getOrderEntries()) {
              model.removeOrderEntry(orderEntry);
            }
            model.commit();
          }
        }
        catch (Throwable e) {
          e.printStackTrace();  // when running test from within IDEA it would fail because junit.jar cache is locked by host IDEA instance
        }
      }
    });
  }
}