// Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
package com.intellij.jarRepository;

import com.intellij.icons.AllIcons;
import com.intellij.ide.JavaUiBundle;
import com.intellij.ide.util.PropertiesComponent;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.fileChooser.FileChooserDescriptor;
import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory;
import com.intellij.openapi.fileChooser.FileChooserDialog;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.DialogWrapper;
import com.intellij.openapi.ui.TextFieldWithBrowseButton;
import com.intellij.openapi.ui.ValidationInfo;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.NlsSafe;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.util.text.Strings;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.ui.CollectionComboBoxModel;
import com.intellij.ui.ComboboxWithBrowseButton;
import com.intellij.ui.DocumentAdapter;
import com.intellij.ui.components.JBCheckBox;
import com.intellij.ui.components.JBLabel;
import com.intellij.util.JavaXmlDocumentKt;
import com.intellij.util.ui.AsyncProcessIcon;
import com.intellij.xml.util.XmlStringUtil;
import org.eclipse.aether.version.InvalidVersionSpecificationException;
import org.eclipse.aether.version.Version;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.idea.maven.aether.ArtifactRepositoryManager;
import org.jetbrains.jps.model.library.JpsMavenRepositoryLibraryDescriptor;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.text.JTextComponent;
import javax.xml.parsers.DocumentBuilder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import java.util.List;
import java.util.*;

public final class RepositoryAttachDialog extends DialogWrapper {
  @NonNls private static final String PROPERTY_DOWNLOAD_TO_PATH = "Downloaded.Files.Path";
  @NonNls private static final String PROPERTY_DOWNLOAD_TO_PATH_ENABLED = "Downloaded.Files.Path.Enabled";
  @NonNls private static final String PROPERTY_ATTACH_JAVADOC = "Repository.Attach.JavaDocs";
  @NonNls private static final String PROPERTY_ATTACH_SOURCES = "Repository.Attach.Sources";
  @NonNls private static final String PROPERTY_ATTACH_ANNOTATIONS = "Repository.Attach.Annotations";
  @NotNull private final Mode myMode;

  public enum Mode { SEARCH, DOWNLOAD }
  private final Project myProject;

  private JBLabel myInfoLabel;
  private JCheckBox myJavaDocCheckBox;
  private JCheckBox mySourcesCheckBox;
  private AsyncProcessIcon myProgressIcon;
  private ComboboxWithBrowseButton myComboComponent;
  private JPanel myPanel;
  private TextFieldWithBrowseButton myDirectoryField;
  private JBCheckBox myDownloadToCheckBox;
  private JBLabel myCaptionLabel;
  private JPanel myDownloadOptionsPanel;
  private JBCheckBox myIncludeTransitiveDepsCheckBox;
  private JPanel mySearchOptionsPanel;
  private JBCheckBox myIncludeTransitiveDependenciesForSearchCheckBox;
  private JBCheckBox myAnnotationsCheckBox;

  private final JComboBox myCombobox;

  private final Map<String, RepositoryArtifactDescription> myCoordinates = new HashMap<>();
  private final List<String> myShownItems = new ArrayList<>();
  private final @NlsSafe String myDefaultDownloadFolder;

  private String myFilterString;
  private boolean myInUpdate;

  public RepositoryAttachDialog(@NotNull Project project, final @Nullable String initialFilter, @NotNull Mode mode) {
    super(project, true);
    myMode = mode;
    setTitle(mode == Mode.DOWNLOAD ? JavaUiBundle.message("dialog.title.download.library.from.maven.repository")
                                   : JavaUiBundle.message("dialog.title.search.library.in.maven.repositories"));
    myProject = project;
    myProgressIcon.suspend();
    final String text = JavaUiBundle.message("repository.attach.dialog.caption.label");
    myCaptionLabel.setText(XmlStringUtil.wrapInHtml(StringUtil.escapeXmlEntities(text)));
    myInfoLabel.setPreferredSize(
      new Dimension(myInfoLabel.getFontMetrics(myInfoLabel.getFont()).stringWidth("Showing: 1000"), myInfoLabel.getPreferredSize().height));

    myComboComponent.setButtonIcon(AllIcons.Actions.Find);
    myComboComponent.getButton().addActionListener(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        performSearch();
      }
    });
    myCombobox = myComboComponent.getComboBox();
    myCombobox.setModel(new CollectionComboBoxModel(myShownItems, null));
    myCombobox.setEditable(true);
    final JTextField textField = (JTextField)myCombobox.getEditor().getEditorComponent();
    textField.setColumns(20);
    if (initialFilter != null) {
      textField.setText(initialFilter);
    }
    textField.getDocument().addDocumentListener(new DocumentAdapter() {
      @Override
      protected void textChanged(@NotNull DocumentEvent e) {
        ApplicationManager.getApplication().invokeLater(() -> {
          if (myProgressIcon.isDisposed()) return;
          ApplicationManager.getApplication().invokeLater(() -> {
            if (myProgressIcon.isDisposed()) return;
            handleMavenDependencyInsertion(e, textField);
            updateComboboxSelection(false);
          });

          updateComboboxSelection(false);
        });
      }
    });
    myCombobox.addActionListener(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        final boolean popupVisible = myCombobox.isPopupVisible();
        if (!myInUpdate && (!popupVisible || myCoordinates.isEmpty())) {
          performSearch();
        }
        else {
          final String item = (String)myCombobox.getSelectedItem();
          if (StringUtil.isNotEmpty(item)) {
            ((JTextField)myCombobox.getEditor().getEditorComponent()).setText(item);
          }
        }
      }
    });
    VirtualFile baseDir = !myProject.isDefault() ? myProject.getBaseDir() : null;
    myDefaultDownloadFolder = baseDir != null ? FileUtil.toSystemDependentName(baseDir.getPath() + "/lib") : "";

    PropertiesComponent storage = PropertiesComponent.getInstance(myProject);
    myDownloadToCheckBox.setSelected(storage.isTrueValue(PROPERTY_DOWNLOAD_TO_PATH_ENABLED));
    myDirectoryField.setText(getDownloadPath(storage));
    myDirectoryField.setEnabled(myDownloadToCheckBox.isSelected());
    myDownloadToCheckBox.addActionListener(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        myDirectoryField.setEnabled(myDownloadToCheckBox.isSelected());
      }
    });
    myJavaDocCheckBox.setSelected(storage.isTrueValue(PROPERTY_ATTACH_JAVADOC));
    mySourcesCheckBox.setSelected(storage.isTrueValue(PROPERTY_ATTACH_SOURCES));
    mySourcesCheckBox.setSelected(storage.isTrueValue(PROPERTY_ATTACH_ANNOTATIONS));

    final FileChooserDescriptor descriptor = FileChooserDescriptorFactory.createSingleFolderDescriptor();
    descriptor.putUserData(FileChooserDialog.PREFER_LAST_OVER_TO_SELECT, Boolean.TRUE);
    myDirectoryField.addBrowseFolderListener(JavaUiBundle.message("file.chooser.directory.for.downloaded.libraries.title"),
                                             JavaUiBundle.message("file.chooser.directory.for.downloaded.libraries.description"), null,
                                             descriptor);
    updateInfoLabel();
    myDownloadOptionsPanel.setVisible(mode == Mode.DOWNLOAD);
    mySearchOptionsPanel.setVisible(mode == Mode.SEARCH);
    init();
  }

  private @NlsSafe String getDownloadPath(@NotNull final PropertiesComponent storage) {
    final String value = storage.getValue(PROPERTY_DOWNLOAD_TO_PATH);
    if (Strings.isNotEmpty(value)) return value;
    return myDefaultDownloadFolder;
  }

  private static void handleMavenDependencyInsertion(DocumentEvent e, JTextField textField) {
    if (e.getType() == DocumentEvent.EventType.INSERT) {
      String text = textField.getText();
      if (isMvnDependency(text)) {
        DocumentBuilder builder = JavaXmlDocumentKt.createDocumentBuilder();
        try {
          Document document = builder.parse(new InputSource(new StringReader(text)));
          String mavenCoordinates = extractMavenCoordinates(document);
          if (mavenCoordinates != null) {
            textField.setText(mavenCoordinates);
          }
        }
        catch (SAXException | IOException ignored) {
        }
      }
    }
  }

  public boolean getAttachJavaDoc() {
    return myJavaDocCheckBox.isSelected();
  }

  public boolean getAttachSources() {
    return mySourcesCheckBox.isSelected();
  }

  public boolean getAttachExternalAnnotations() {
    return myAnnotationsCheckBox.isSelected();
  }

  public boolean getIncludeTransitiveDependencies() {
    return myMode == Mode.DOWNLOAD ? myIncludeTransitiveDepsCheckBox.isSelected() : myIncludeTransitiveDependenciesForSearchCheckBox.isSelected();
  }

  @Nullable
  public String getDirectoryPath() {
    return myDownloadToCheckBox.isSelected()? myDirectoryField.getText() : null;
  }

  @Override
  public JComponent getPreferredFocusedComponent() {
    return myCombobox;
  }

  private void updateComboboxSelection(boolean force) {
    final String prevFilter = myFilterString;
    final JTextComponent field = (JTextComponent)myCombobox.getEditor().getEditorComponent();
    final int caret = field.getCaretPosition();
    myFilterString = field.getText();

    if (!force && Objects.equals(myFilterString, prevFilter)) return;
    int prevSize = myShownItems.size();
    myShownItems.clear();

    myInUpdate = true;
    final boolean itemSelected = myCoordinates.containsKey(myFilterString) && Comparing.strEqual((String)myCombobox.getSelectedItem(), myFilterString, false);
    final boolean filtered;
    if (itemSelected) {
      myShownItems.addAll(myCoordinates.keySet());
      filtered = false;
    }
    else {
      final String[] parts = myFilterString.split(" ");
      main:
      for (String coordinate : myCoordinates.keySet()) {
        for (String part : parts) {
          if (!StringUtil.containsIgnoreCase(coordinate, part)) {
            continue main;
          }
        }
        myShownItems.add(coordinate);
      }
      filtered = !myShownItems.isEmpty();
      if (!filtered) {
        myShownItems.addAll(myCoordinates.keySet());
      }
      myCombobox.setSelectedItem(null);
    }

    // use maven version sorter
    ArrayList<LibItem> items = new ArrayList<>(myShownItems.size());
    for (String coord : myShownItems) {
      items.add(new LibItem(coord));
    }
    items.sort((o1, o2) -> Comparing.compare(o1, o2));
    myShownItems.clear();
    for (LibItem it : items) {
      myShownItems.add(it.coord);
    }

    ((CollectionComboBoxModel<?>)myCombobox.getModel()).update();
    myInUpdate = false;
    field.setText(myFilterString);
    field.setCaretPosition(caret);
    updateInfoLabel();
    if (filtered) {
      if (prevSize < 10 && myShownItems.size() > prevSize && myCombobox.isPopupVisible()) {
        myCombobox.setPopupVisible(false);
      }
      if (!myCombobox.isPopupVisible()) {
        myCombobox.setPopupVisible(true);
      }
    }
  }

  private static final class LibItem implements Comparable<LibItem> {
    final String prefix;
    final Version ver;
    final String coord;

    LibItem(String coord) {
      this.coord = coord;
      final JpsMavenRepositoryLibraryDescriptor desc = new JpsMavenRepositoryLibraryDescriptor(coord);
      prefix = desc.getGroupId() + ":" + desc.getArtifactId();
      Version ver = null;
      try {
        ver = ArtifactRepositoryManager.asVersion(desc.getVersion());
      }
      catch (InvalidVersionSpecificationException ignored) {
      }
      this.ver = ver;
    }

    @Override
    public int compareTo(@NotNull LibItem that) {
      final int prefixCompare = prefix.compareTo(that.prefix);
      return prefixCompare != 0 ? prefixCompare : Comparing.compare(that.ver, ver);
    }
  }

  private boolean performSearch() {
    final String text = getCoordinateText();
    if (myProgressIcon.isRunning() || StringUtil.isEmptyOrSpaces(text) || myCoordinates.containsKey(text)) {
      return false;
    }
    myProgressIcon.resume();
    JarRepositoryManager.searchArtifacts(myProject, text, (pairs) -> {
      try {
        if (myProgressIcon.isDisposed()) {
          return;
        }
        myProgressIcon.suspend(); // finished
        final int prevSize = myCoordinates.size();
        for (Pair<RepositoryArtifactDescription, RemoteRepositoryDescription> pair : pairs) {
          final RepositoryArtifactDescription artifact = pair.first;
          myCoordinates.put(artifact.getGroupId() + ":" + artifact.getArtifactId() + ":" + artifact.getVersion(), artifact);
        }
        updateComboboxSelection(prevSize != myCoordinates.size());
      }
      finally {
        setOKActionEnabled(true);
      }
    });
    return true;
  }

  private void updateInfoLabel() {
    myInfoLabel.setText(JavaUiBundle.message("info.text.found.0.br.showing.1", myCoordinates.size(), myCombobox.getModel().getSize()));
  }

  @Override
  protected ValidationInfo doValidate() {
    if (!isValidCoordinateSelected()) {
      return new ValidationInfo(JavaUiBundle.message("error.message.please.enter.valid.coordinate.discover.it.or.select.one.from.the.list"), myCombobox);
    }
    else if (myDownloadToCheckBox.isSelected()) {
      final File dir = new File(myDirectoryField.getText());
      if (!dir.exists() && !dir.mkdirs() || !dir.isDirectory()) {
        return new ValidationInfo(JavaUiBundle.message("error.message.please.enter.valid.library.files.path"), myDirectoryField.getTextField());
      }
    }
    return super.doValidate();
  }

  @Override
  protected JComponent createCenterPanel() {
    return null;
  }

  @Override
  protected JComponent createNorthPanel() {
    return myPanel;
  }


  @Override
  protected void dispose() {
    myProgressIcon.dispose();
    PropertiesComponent storage = PropertiesComponent.getInstance(myProject);
    storage.setValue(PROPERTY_DOWNLOAD_TO_PATH_ENABLED, String.valueOf(myDownloadToCheckBox.isSelected()));
    String downloadPath = myDirectoryField.getText();
    if (StringUtil.isEmptyOrSpaces(downloadPath)) downloadPath = myDefaultDownloadFolder;
    storage.setValue(PROPERTY_DOWNLOAD_TO_PATH, downloadPath, myDefaultDownloadFolder);
    storage.setValue(PROPERTY_ATTACH_JAVADOC, String.valueOf(myJavaDocCheckBox.isSelected()));
    storage.setValue(PROPERTY_ATTACH_SOURCES, String.valueOf(mySourcesCheckBox.isSelected()));
    storage.setValue(PROPERTY_ATTACH_ANNOTATIONS, String.valueOf(myAnnotationsCheckBox.isSelected()));
    super.dispose();
  }

  @Override
  protected String getDimensionServiceKey() {
    return RepositoryAttachDialog.class.getName() + "-" + myMode;
  }

  private boolean isValidCoordinateSelected() {
    final String text = getCoordinateText();
    return text.split(":").length == 3;
  }

  private String getCoordinateText() {
    String text = getFullCoordinateText();
    List<String> parts = StringUtil.split(text, ":");
    return parts.size() == 4 ? parts.get(0) + ":" + parts.get(1) + ":" + parts.get(3) : text;
  }

  @NotNull
  private String getPackaging() {
    List<String> parts = StringUtil.split(getFullCoordinateText(), ":");
    return parts.size() == 4 ? parts.get(2) : JpsMavenRepositoryLibraryDescriptor.DEFAULT_PACKAGING;
  }

  private String getFullCoordinateText() {
    return ((JTextField)myCombobox.getEditor().getEditorComponent()).getText().trim();
  }

  @NotNull
  public JpsMavenRepositoryLibraryDescriptor getSelectedLibraryDescriptor() {
    return new JpsMavenRepositoryLibraryDescriptor(getCoordinateText(), getPackaging(),
                                                   getIncludeTransitiveDependencies(), Collections.emptyList());
  }

  private void createUIComponents() {
    myProgressIcon = new AsyncProcessIcon("Progress");
  }

  private static boolean isMvnDependency(String text) {
    String trimmed = text.trim();
    if (trimmed.startsWith("<dependency>") && trimmed.endsWith("</dependency>")) {
      return true;
    }
    return false;
  }

  @Nullable
  private static String extractMavenCoordinates(Document document) {
    String groupId = getGroupId(document);
    String artifactId = getArtifactId(document);
    if (groupId.isEmpty() && artifactId.isEmpty()) {
      return null;
    }
    String version = getVersion(document);
    String classifier = getClassifier(document);
    String gradleClassifier = classifier.isEmpty() ? "" : ":" + classifier;
    return groupId + ":" + artifactId + ":" + version + gradleClassifier;
  }

  private static String getVersion(@NotNull Document document) {
    return firstOrEmpty(document.getElementsByTagName("version"));
  }

  private static String getArtifactId(@NotNull Document document) {
    return firstOrEmpty(document.getElementsByTagName("artifactId"));
  }

  private static String getGroupId(@NotNull Document document) {
    return firstOrEmpty(document.getElementsByTagName("groupId"));
  }

  private static String getClassifier(@NotNull Document document) {
    return firstOrEmpty(document.getElementsByTagName("classifier"));
  }

  private static String firstOrEmpty(@NotNull NodeList list) {
    Node first = list.item(0);
    return first != null ? first.getTextContent() : "";
  }
}
