/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/*
 * WurstErrorWindow.java
 *
 * Created on 07.12.2011, 10:24:03
 */
package de.peeeq.wurstio.gui;

import com.google.common.base.Preconditions;
import de.peeeq.wurstio.utils.FileReading;
import de.peeeq.wurstscript.WLogger;
import de.peeeq.wurstscript.attributes.CompileError;
import de.peeeq.wurstscript.utils.Utils;
import org.eclipse.jdt.annotation.Nullable;

import javax.imageio.ImageIO;
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.Reader;
import java.net.URISyntaxException;
import java.util.Objects;

/**
 * @author Frotty
 */
public class WurstErrorWindow extends javax.swing.JFrame {
    private static final long serialVersionUID = -451256551943066085L;


    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton closeButton;
    private javax.swing.JTextPane codeArea;
    private javax.swing.JLabel currentStatus;
    private javax.swing.JTextArea errorDetailsPanel;
    private DefaultListModel<CompileError> errorListModel;
    //    private javax.swing.JList errorList;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JButton aboutButton;

    private File currentFile = null;

    public AboutDialog ab;


    private final String workspaceRoot;
    private final SimpleAttributeSet attributes = new SimpleAttributeSet();

    /**
     * Creates new form WurstErrorWindow
     *
     * @param workspaceRoot
     */
    @SuppressWarnings("null")
    public WurstErrorWindow(String workspaceRoot) {
        super("Errors");
        this.workspaceRoot = workspaceRoot;
        BufferedImage image = null;
        try {
            image = ImageIO.read(getClass().getClassLoader().getResource("icon.png"));
        } catch (IOException e) {
            WLogger.severe(e);
        }
        setIconImage(image);

        try {
            ab = new AboutDialog(this, true);
        } catch (URISyntaxException e) {
            java.util.logging.Logger.getLogger(WurstStatusWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, e);
        }

        try {
            UIManager.setLookAndFeel(
                    UIManager.getSystemLookAndFeelClassName());
        } catch (ClassNotFoundException | InstantiationException | UnsupportedLookAndFeelException | IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(WurstStatusWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        initComponents();
        this.setSize(800, 650);
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        GuiUtils.setWindowToCenterOfScreen(this);
        toFront();
        setState(Frame.NORMAL);

    }

    public void setTabs(JTextPane textPane, float charactersPerTab)   {
        FontMetrics fm = textPane.getFontMetrics( textPane.getFont() );
        int charWidth = fm.charWidth( 'w' );
        int tabWidth = (int) (charWidth * charactersPerTab);

        TabStop[] tabs = new TabStop[10];

        for (int j = 0; j < tabs.length; j++)
        {
            int tab = j + 1;
            tabs[j] = new TabStop( tab * tabWidth );
        }

        TabSet tabSet = new TabSet(tabs);
        StyleConstants.setTabSet(attributes, tabSet);
        int length = textPane.getDocument().getLength();
        textPane.getStyledDocument().setParagraphAttributes(0, length, attributes, true);
    }


    /**
     * This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {
        currentStatus = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        errorListModel = new DefaultListModel<>();
        final JList<CompileError> errorList = new JList<>(errorListModel);
        closeButton = new javax.swing.JButton();
        jScrollPane2 = new javax.swing.JScrollPane();
        codeArea = new javax.swing.JTextPane();
        jScrollPane3 = new javax.swing.JScrollPane();
        errorDetailsPanel = new javax.swing.JTextArea();
        aboutButton = new javax.swing.JButton();

        errorList.addListSelectionListener(e -> {
            int index = errorList.getSelectedIndex();
            if (index >= 0) {
                CompileError err = errorListModel.get(index);
                viewErrorDetail(err);
            }
        });

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        codeArea.setEditable(false);

        currentStatus.setFont(new java.awt.Font("Tahoma", Font.BOLD, 12));
        currentStatus.setText("Status");

        jScrollPane1.setViewportView(errorList);
        jScrollPane1.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

        closeButton.setText("Close");
        closeButton.addMouseListener(new java.awt.event.MouseAdapter() {
            @Override
            public void mouseClicked(@Nullable MouseEvent evt) {
                Preconditions.checkNotNull(evt);
                closeButtonMouseClicked(evt);
            }
        });

        jScrollPane2.setViewportView(codeArea);

        aboutButton.setText("AboutDialog...");
        aboutButton.addMouseListener(new java.awt.event.MouseAdapter() {
            @Override
            public void mouseClicked(@Nullable MouseEvent evt) {
                Preconditions.checkNotNull(evt);
                aboutButtonMouseClicked(evt);
            }
        });


        errorDetailsPanel.setFont(new java.awt.Font("Tahoma", Font.PLAIN, 12)); // NOI18N
        errorDetailsPanel.setLineWrap(true);
        errorDetailsPanel.setWrapStyleWord(true);
        errorDetailsPanel.setEditable(false);
        errorDetailsPanel.setFont(this.getFont());
        errorDetailsPanel.setBorder(new EmptyBorder(1, 1, 1, 1));
        errorDetailsPanel.setBackground(this.getBackground());
        errorDetailsPanel.setDragEnabled(true);

        jScrollPane3.setViewportView(errorDetailsPanel);
        jScrollPane3.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addContainerGap()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                        .addComponent(jScrollPane3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 801,
                                                Short.MAX_VALUE)
                                        .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 801, Short.MAX_VALUE)
                                        .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 801,
                                                Short.MAX_VALUE)
                                        .addComponent(currentStatus, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 700,
                                                javax.swing.GroupLayout.PREFERRED_SIZE)
                                        .addGroup(layout.createSequentialGroup()
                                                .addComponent(aboutButton)
                                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 669, Short.MAX_VALUE)
                                                .addComponent(closeButton)))
                                .addContainerGap())
        );
        layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(layout.createSequentialGroup()
                                .addContainerGap()
                                .addComponent(currentStatus)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 159, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jScrollPane3, javax.swing.GroupLayout.DEFAULT_SIZE, 39, Short.MAX_VALUE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 327, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                        .addComponent(aboutButton, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(closeButton, javax.swing.GroupLayout.DEFAULT_SIZE, 30, Short.MAX_VALUE))
                                .addContainerGap())
        );

        pack();
    }

    private void closeButtonMouseClicked(java.awt.event.MouseEvent evt) {
        this.dispose();
    }

    private void aboutButtonMouseClicked(java.awt.event.MouseEvent evt) {
        ab.setVisible(true);
    }

    private void viewErrorDetail(CompileError err) {
        setVisible(true);
        this.errorDetailsPanel.setText(err.getMessage());

        File errFile = new File(err.getSource().getFile());
        File workspaceErrFile = new File(workspaceRoot + "/" + err.getSource().getFile());

        if (!errFile.exists() && workspaceErrFile.exists()) {
            errFile = workspaceErrFile;
        }

        try {
            if (!Objects.equals(currentFile, errFile)) {
                currentFile = errFile;
                try (Reader fr = FileReading.getFileReader(errFile)) {
                    codeArea.read(fr, errFile);
                }
            }

            String text = codeArea.getText();

            StyleConstants.setUnderline(attributes, false);
            StyleConstants.setBackground(attributes, new Color(255, 255, 255));
            // reset highlighting
            codeArea.getStyledDocument().setCharacterAttributes(0, text.length() - 1, attributes, true);

            int selectionStart = err.getSource().getLeftPos();
            // select at least one character:
            int selectionEnd = err.getSource().getRightPos();

            if (selectionStart == selectionEnd && selectionStart > 0) {
                // select at least one char
                selectionStart--;
            }

            StyledDocument doc = codeArea.getStyledDocument();
            String docText = doc.getText(0, doc.getLength());


            // correct ignored chars (fix for newlines with carriage return):
            int ignoredChars = 0;
            for (int i = 0; i < selectionStart - ignoredChars; i++) {
                char docChar = docText.charAt(i);
                char textChar = text.charAt(i + ignoredChars);
                if (docChar == '\n' && textChar == '\r') {
                    ignoredChars++;
                } else if (docChar != textChar) {
                    System.err.println("unexpected deviation in texts: " + docChar + " != " + textChar);
                    break;
                }
            }

            selectionStart -= ignoredChars;
            selectionEnd -= ignoredChars;

            selectionStart = Utils.inBorders(0, selectionStart, docText.length() - 2);
            selectionEnd = Utils.inBorders(1, selectionEnd, docText.length() - 1);


            StyleConstants.setUnderline(attributes, true);
            StyleConstants.setBackground(attributes, new Color(255, 150, 150));


            doc.setCharacterAttributes(selectionStart, selectionEnd - selectionStart, attributes, true);

            codeArea.select(selectionStart, selectionEnd);

            setTabs(codeArea, 4);
        } catch (FileNotFoundException e) {
            codeArea.setText("Could not load file: " + errFile);
        } catch (IOException e) {
            codeArea.setText("Could not read file: " + errFile);
            WLogger.info(e);
        } catch (BadLocationException e) {
            WLogger.severe(e);
        }
    }

    //	@Override
    public void sendError(CompileError elem) {
        if (errorListModel.isEmpty()) {
            viewErrorDetail(elem);
        }
        errorListModel.addElement(elem);
        this.requestFocus();
    }

    public void sendFinished() {
        if (errorListModel.isEmpty()) {
            dispose();
        }
    }


}