package com.fr.design.javascript;

import com.fr.base.svg.IconUtils;
import com.fr.design.DesignerEnvManager;
import com.fr.design.border.UIRoundedBorder;
import com.fr.design.constants.KeyWords;
import com.fr.design.constants.UIConstants;
import com.fr.design.dialog.BasicDialog;
import com.fr.design.dialog.BasicPane;
import com.fr.design.dialog.DialogActionAdapter;
import com.fr.design.gui.autocomplete.AutoCompletion;
import com.fr.design.gui.autocomplete.BasicCompletion;
import com.fr.design.gui.autocomplete.CompletionProvider;
import com.fr.design.gui.autocomplete.DefaultCompletionProvider;
import com.fr.design.gui.autocomplete.ShorthandCompletion;
import com.fr.design.gui.icontainer.UIScrollPane;
import com.fr.design.gui.ilable.UILabel;
import com.fr.design.gui.syntax.ui.rsyntaxtextarea.RSyntaxTextArea;
import com.fr.design.gui.syntax.ui.rsyntaxtextarea.SyntaxConstants;
import com.fr.design.i18n.Toolkit;
import com.fr.design.javascript.beautify.JavaScriptFormatHelper;
import com.fr.design.javascript.jsapi.JSImplPopulateAction;
import com.fr.design.javascript.jsapi.JSImplUpdateAction;
import com.fr.design.layout.FRGUIPaneFactory;
import com.fr.design.mainframe.DesignerContext;
import com.fr.general.IOUtils;
import com.fr.js.JavaScriptImpl;
import com.fr.stable.StringUtils;
import com.fr.stable.collections.combination.Pair;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.SwingConstants;
import javax.swing.SwingWorker;
import javax.swing.border.EmptyBorder;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;

public class JSContentPane extends BasicPane {
    protected RSyntaxTextArea contentTextArea;
    private UILabel funNameLabel = new UILabel();
    private AutoCompletion ac;
    private static final Dimension FUNCTION_NAME_LABEL_SIZE = new Dimension(300, 80);
    private String[] defaultArgs;
    private int titleWidth = 180;
    private JPanel labelPane = new JPanel(new BorderLayout(6, 4));;
    private NewJavaScriptImplPane newJavaScriptImplPane = null;
    private JavaScriptImpl javaScript;
    private JSImplUpdateAction jsImplUpdateAction;
    private JSImplPopulateAction jsImplPopulateAction;
    private boolean modal;
    BasicDialog advancedEditorDialog ;
    private JLabel warningLabel;
    //用来标记当前显示状态
    private boolean showWarning = false;
    private static final Color WARING_LABEL_BACKGROUND = Color.decode("#FFFBE6");
    private static final Color WARING_LABEL_FOREGROUND = new Color(0, 0, 0, 216);
    private JPanel endBracketsPanel;

    public JSContentPane(){}

    public JSContentPane(String[] args) {
        defaultArgs = args;
        this.setLayout(FRGUIPaneFactory.createBorderLayout());
        initFunctionTitle(args);

        JPanel jsParaPane = createJSParaPane();
        if (needAdvancedEditor()) {
            addNewPaneLabel();
        }
        this.add(jsParaPane, BorderLayout.NORTH);

        UIScrollPane sp = createContentTextAreaPanel();
        initContentTextAreaListener();
        this.add(sp, BorderLayout.CENTER);

        UILabel funNameLabel2 = new UILabel();
        funNameLabel2.setText("}");

        if (isNeedContentWarning()) {
            endBracketsPanel = FRGUIPaneFactory.createBorderLayout_S_Pane();
            endBracketsPanel.add(funNameLabel2, BorderLayout.NORTH);
            warningLabel = initWarningLabel();
            this.add(endBracketsPanel, BorderLayout.SOUTH);
        } else {
            this.add(funNameLabel2, BorderLayout.SOUTH);
        }
    }

    protected JLabel initWarningLabel() {
        JLabel warningLabel = new JLabel(StringUtils.EMPTY);
        warningLabel.setOpaque(true);
        warningLabel.setAlignmentX(LEFT_ALIGNMENT);
        // 设置左右 5px 的间距
        warningLabel.setBorder(new EmptyBorder(0, 5, 0, 5));
        warningLabel.setPreferredSize(new Dimension(200, 20));
        warningLabel.setBackground(WARING_LABEL_BACKGROUND);
        warningLabel.setForeground(WARING_LABEL_FOREGROUND);

        addContentListener4Warning();
        return warningLabel;
    }

    private void addContentListener4Warning() {
        contentTextArea.getDocument().addDocumentListener(new DocumentListener() {
            @Override
            public void insertUpdate(DocumentEvent e) {
                checkContent(contentTextArea);
            }

            @Override
            public void removeUpdate(DocumentEvent e) {
                checkContent(contentTextArea);
            }

            @Override
            public void changedUpdate(DocumentEvent e) {
                checkContent(contentTextArea);
            }
        });
    }

    private void checkContent(RSyntaxTextArea contentTextArea) {
        String content = contentTextArea.getText().trim();
        Pair<Boolean, String> pair = checkContent(content);
        boolean matches = Boolean.TRUE.equals(pair.getFirst());
        String tip = pair.getSecond() != null ? pair.getSecond() : StringUtils.EMPTY;
        // 更新提示
        updateWarningTip(tip);

        if (matches == showWarning) {
            return;
        }
        if (matches) {
            addWarningLabel();
            showWarning = true;
        } else {
            removeWarningLabel();
            showWarning = false;
        }
    }

    protected void updateWarningTip(String tip) {
        if (!StringUtils.equals(warningLabel.getText(), tip)) {
            warningLabel.setText(tip);
        }
    }

    protected void removeWarningLabel() {
        endBracketsPanel.remove(warningLabel);
        endBracketsPanel.revalidate();
    }

    protected void addWarningLabel() {
        endBracketsPanel.add(warningLabel, BorderLayout.SOUTH);
        endBracketsPanel.revalidate();
    }

    public JSContentPane(String[] args,boolean modal) {
        this(args);
        this.modal = modal;
    }

    public void setJsImplUpdateAction(JSImplUpdateAction jsImplUpdateAction){
        this.jsImplUpdateAction = jsImplUpdateAction;
    }

    public void setJsImplPopulateAction(JSImplPopulateAction jsImplPopulateAction){
        this.jsImplPopulateAction = jsImplPopulateAction;
    }

    public void updateJSImpl(JavaScriptImpl javaScript){
        this.javaScript = javaScript;
    }

    private void addNewPaneLabel(){
        UILabel advancedEditorLabel = new UILabel(Toolkit.i18nText("Fine-Design_Advanced_Editor"), IconUtils.readIcon("com/fr/design/images/edit/advancedEditor.svg"), SwingConstants.LEFT);
        advancedEditorLabel.setCursor(new Cursor(Cursor.HAND_CURSOR));

        advancedEditorLabel.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                if(newJavaScriptImplPane == null){
                    newJavaScriptImplPane = new NewJavaScriptImplPane(defaultArgs);
                }
                jsImplUpdateAction.update(javaScript);
                newJavaScriptImplPane.populate(javaScript);
                if(advancedEditorDialog == null || !advancedEditorDialog.isVisible()) {
                    advancedEditorDialog = newJavaScriptImplPane.showWindowWithCustomSize(DesignerContext.getDesignerFrame(), new DialogActionAdapter() {
                        @Override
                        public void doOk() {
                            if (javaScript != null) {
                                newJavaScriptImplPane.updateBean(javaScript);
                                jsImplPopulateAction.populate(javaScript);
                            }
                        }

                        @Override
                        public void doCancel() {
                            super.doCancel();
                        }
                    },new Dimension(900,800));
                    advancedEditorDialog.setModal(modal);
                    advancedEditorDialog.setResizable(true);
                    advancedEditorDialog.pack();
                    advancedEditorDialog.setVisible(true);
                }
                advancedEditorDialog.requestFocus();
            }
        });
        labelPane.add(advancedEditorLabel,BorderLayout.EAST);
    }

    protected UIScrollPane createContentTextAreaPanel(){
        contentTextArea = new RSyntaxTextArea();
        contentTextArea.setCloseCurlyBraces(true);
        contentTextArea.setLineWrap(true);
        contentTextArea.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_JAVASCRIPT);
        contentTextArea.setCodeFoldingEnabled(true);
        contentTextArea.setAntiAliasingEnabled(true);
        return new UIScrollPane(contentTextArea);
    }

    private void initContentTextAreaListener(){
        contentTextArea.addFocusListener(new FocusListener() {
            @Override
            public void focusGained(FocusEvent e) {
                // 获得焦点时 安装
                installAutoCompletion();
            }

            @Override
            public void focusLost(FocusEvent e) {
                // 失去焦点时 卸载
                uninstallAutoCompletion();
            }
        });
    }

    protected JPanel createJSParaPane(){
        UILabel label = new UILabel(com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Format_JavaScript"), IOUtils.readIcon("com/fr/design/images/edit/format.png"), SwingConstants.LEFT);
        label.setCursor(new Cursor(Cursor.HAND_CURSOR));
        label.setToolTipText(com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Format_JavaScript"));
        label.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseReleased(MouseEvent e) {
                new SwingWorker<String, Void>() {
                    @Override
                    protected String doInBackground() throws Exception {
                        return JavaScriptFormatHelper.beautify(contentTextArea.getText());
                    }

                    @Override
                    protected void done() {
                        try {
                            String text = get();
                            contentTextArea.setText(text);
                        } catch (Exception ignore) {

                        }
                    }
                }.execute();
            }
        });

        labelPane.add(label,BorderLayout.CENTER);
        JPanel jsParaPane = new JPanel(new BorderLayout(4, 4));
        jsParaPane.setPreferredSize(new Dimension(300, 80));
        UIScrollPane scrollPane = new UIScrollPane(funNameLabel);
        scrollPane.setPreferredSize(FUNCTION_NAME_LABEL_SIZE);
        scrollPane.setBorder(new UIRoundedBorder(UIConstants.TITLED_BORDER_COLOR, 1, UIConstants.ARC));
        jsParaPane.add(scrollPane, BorderLayout.WEST);
        jsParaPane.add(labelPane, BorderLayout.EAST);
        return jsParaPane;
    }

    protected void initFunctionTitle(String[] args){
        funNameLabel = new UILabel();
        this.setFunctionTitle(args);
    }

    private KeyStroke convert2KeyStroke(String ks) {
        return KeyStroke.getKeyStroke(ks.replace("+", "pressed"));
    }

    /**
     * 注册安装 自动补全监听
     */
    private void installAutoCompletion() {
        if (ac == null) {
            CompletionProvider provider = createCompletionProvider();
            ac = new AutoCompletion(provider);
            String shortCuts = DesignerEnvManager.getEnvManager().getAutoCompleteShortcuts();

            ac.setTriggerKey(convert2KeyStroke(shortCuts));
            ac.install(contentTextArea);
        }
    }

    /**
     * 卸载移除 自动补全监听
     */
    private void uninstallAutoCompletion() {
        if (ac != null) {
            ac.uninstall();
            ac = null;
        }
    }

    @Override
    protected String title4PopupWindow() {
        return "JS";
    }

    public void populate(String js) {
        this.contentTextArea.setText(js);
    }

    public String update() {
        return this.contentTextArea.getText();
    }

    public void reset() {
        this.contentTextArea.setText(null);
    }

    public void setFunctionTitle(String[] args) {
        funNameLabel.setText(createFunctionTitle(args));
    }

    public void setFunctionTitle(String[] args, String[] defaultArgs) {
        String[] titles;
        if (defaultArgs == null) {
            titles = args;
        } else if (args == null) {
            titles = defaultArgs;
        } else {
            ArrayList list = new ArrayList();
            for (String s : defaultArgs) {
                list.add(s);
            }
            for (String s : args) {
                list.add(s);
            }
            titles = (String[]) list.toArray(new String[list.size()]);
        }
        setFunctionTitle(titles);
    }

    /**
     * 用html，方便换行
     *
     * @param args
     * @return
     */
    private String createFunctionTitle(String[] args) {
        StringBuffer sb = new StringBuffer();
        sb.append("<html> <body> <div style='height:16px'>function(");
        int width = titleWidth;
        FontMetrics cellFM = this.getFontMetrics(this.getFont());
        int tempwidth = 0;
        if (args != null) {
            for (int i = 0; i < args.length; i++) {
                if (args[i] == null) {
                    continue;
                }
                if (cellFM.stringWidth(args[i]) < width) {
                    tempwidth = tempwidth + cellFM.stringWidth(args[i]);
                    if (tempwidth < width) {
                        sb.append(args[i]);
                        if (i != args.length - 1) {
                            sb.append(",");
                        }
                    } else {
                        tempwidth = 0;
                        i = i - 1;// 后退一步
                        sb.append("</p><p>&nbsp&nbsp&nbsp&nbsp&nbsp;");
                    }
                } else {
                    sb.append("</p><p>&nbsp&nbsp&nbsp&nbsp&nbsp;");
                    sb.append(args[i]);
                    sb.append("</p>");
                }
            }
        }
        sb.append("){</div><body> </html>");
        return sb.toString();
    }

    private CompletionProvider createCompletionProvider() {

        DefaultCompletionProvider provider = new DefaultCompletionProvider();

        for (String key : KeyWords.JAVASCRIPT) {
            provider.addCompletion(new BasicCompletion(provider, key));
        }

        for (String[] key : KeyWords.JAVASCRIPT_SHORT) {
            provider.addCompletion(new ShorthandCompletion(provider, key[0],
                    key[1], key[1]));
        }

        return provider;

    }

    protected boolean needAdvancedEditor() {
        return true;
    }

    /**
     * 是否支持内容提示
     * @return 是否支持
     */
    protected boolean isNeedContentWarning() {
        return false;
    }

    /**
     * 自定义匹配js内容，并返回对应的提示文本
     * @return <是否匹配，提示文本>
     */
    protected Pair<Boolean, String> checkContent(String content) {
        return new Pair<>(false, StringUtils.EMPTY);
    }
}