// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package com.intellij.projectView;

import com.intellij.ide.projectView.ViewSettings;
import com.intellij.ide.projectView.impl.AbstractProjectTreeStructure;
import com.intellij.ide.projectView.impl.ClassesTreeStructureProvider;
import com.intellij.ide.projectView.impl.PackageViewPane;
import com.intellij.ide.projectView.impl.ProjectViewPane;
import com.intellij.ide.projectView.impl.nodes.PackageElementNode;
import com.intellij.ide.projectView.impl.nodes.PackageViewProjectNode;
import com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode;
import com.intellij.ide.util.treeView.AbstractTreeNode;
import com.intellij.ide.util.treeView.AbstractTreeStructure;
import com.intellij.navigation.NavigationItem;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.Queryable;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiDirectory;
import com.intellij.testFramework.PlatformTestUtil;
import com.intellij.testFramework.ProjectViewTestUtil;
import com.intellij.testFramework.TestSourceBasedTestCase;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;

import javax.swing.*;
import java.util.Arrays;
import java.util.Comparator;

public abstract class BaseProjectViewTestCase extends TestSourceBasedTestCase {
  @Override
  protected boolean isCreateDirectoryBasedProject() {
    return true;
  }

  protected TestProjectTreeStructure myStructure;

  protected Queryable.PrintInfo myPrintInfo;

  protected @NotNull String packageViewPaneId = ProjectViewPane.ID;

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    myStructure = new TestProjectTreeStructure(myProject, getTestRootDisposable()) {
      @Override
      protected AbstractTreeNode<?> createRoot(@NotNull Project project, @NotNull ViewSettings settings) {
        return switch (packageViewPaneId) {
          case ProjectViewPane.ID -> super.createRoot(project, settings);
          case PackageViewPane.ID -> new PackageViewProjectNode(project, settings);
          default -> throw new IllegalStateException("Unexpected value: " + packageViewPaneId);
        };
      }
    };
  }

  @Override
  protected void tearDown() throws Exception {
    myStructure = null;
    super.tearDown();
  }

  protected void assertStructureEqual(PsiDirectory packageDirectory, @NonNls String expected) {
    assertStructureEqual(packageDirectory, expected, 17, myStructure);
  }

  protected void assertStructureEqual(PsiDirectory packageDirectory, @NonNls String expected, int maxRowCount) {
    assertStructureEqual(packageDirectory, expected, maxRowCount, myStructure);
  }

  protected void useStandardProviders() {
    getProjectTreeStructure().setProviders(new ClassesTreeStructureProvider(myProject));
  }

  protected AbstractProjectTreeStructure getProjectTreeStructure() {
    return myStructure;
  }

  private void assertStructureEqual(PsiDirectory root, String expected, int maxRowCount, AbstractProjectTreeStructure structure) {
    assertNotNull(root);
    PsiDirectoryNode rootNode = new PsiDirectoryNode(myProject, root, structure);
    assertStructureEqual(expected, maxRowCount, rootNode);
  }

  protected void assertStructureEqual(@NotNull String expected) {
    assertStructureEqual(expected, -1, myStructure.getRootElement());
  }

  private void assertStructureEqual(String expected, int maxRowCount, Object rootNode) {
    ProjectViewTestUtil.assertStructureEqual(myStructure, expected, maxRowCount, PlatformTestUtil.createComparator(myPrintInfo), rootNode, myPrintInfo);
  }

  protected static void assertListsEqual(ListModel<?> model, String expected) {
    assertEquals(expected, PlatformTestUtil.print(model));
  }

  public static void checkContainsMethod(final Object rootElement, final AbstractTreeStructure structure) {
    ProjectViewTestUtil.checkContainsMethod(rootElement, structure, kid -> {
      if (kid instanceof PackageElementNode) {
        return ((PackageElementNode)kid).getVirtualFiles();
      }
      return null;
    });
  }

  @Override
  protected String getTestPath() {
    return "projectView";
  }

  protected static String getPackageRelativePath() {
    return "com/package1";
  }

  protected PsiDirectory getPackageDirectory() {
    return getPackageDirectory(getPackageRelativePath());
  }

  public static void sortClassesByName(PsiClass @NotNull [] classes) {
    Arrays.sort(classes, Comparator.comparing(NavigationItem::getName));
  }
}
