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package cdc.issues.ui.swing;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;

import cdc.issues.IssueSeverity;
import cdc.issues.locations.Location;
import cdc.ui.swing.GridBagConstraintsBuilder;
import cdc.ui.swing.SwingUtils;
import cdc.ui.swing.cells.EnumUi;

public class IssuesPanel extends JPanel {
    private static final long serialVersionUID = 1L;

    private final JTable wTable;
    private final IssuesTableModel model = new IssuesTableModel();
    private final JButton wClear = new JButton("Clear");

    private final JLabel wCount = new JLabel();

    public IssuesPanel() {
        setLayout(new GridBagLayout());

        final JScrollPane wScrollPane = new JScrollPane();
        wScrollPane.setPreferredSize(new Dimension(200, 100));
        add(wScrollPane,
            GridBagConstraintsBuilder.builder()
                                     .gridx(0)
                                     .gridy(0)
                                     .gridwidth(2)
                                     .weightx(1.0)
                                     .weighty(1.0)
                                     .fill(GridBagConstraints.BOTH)
                                     .build());

        wTable = new JTable(model);
        wTable.setDefaultRenderer(Location[].class, new LocationsCellRenderer());
        wScrollPane.setViewportView(wTable);
        wTable.setAutoCreateRowSorter(true);
        wTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

        wTable.setDefaultRenderer(IssueSeverity.class,
                                  new EnumUi.LabelCellRenderer<>(IssueSeverity.class, IssueSeverityUi.SETTINGS));

        model.addTableModelListener(this::updateCounts);

        wTable.getRowSorter().addRowSorterListener(e -> updateCounts());

        SwingUtils.setColumnWidths(wTable,
                                   200, // timestamp
                                   100, // domain
                                   200, // name
                                   200, // params
                                   75, // project
                                   75, // snapshot
                                   75, // severity
                                   600, // description
                                   600, // locations
                                   200); // metas

        add(wCount,
            GridBagConstraintsBuilder.builder()
                                     .gridx(0)
                                     .gridy(1)
                                     .weightx(1.0)
                                     .anchor(GridBagConstraints.LINE_START)
                                     .insets(5, 0, 0, 0)
                                     .build());

        add(wClear,
            GridBagConstraintsBuilder.builder()
                                     .gridx(1)
                                     .gridy(1)
                                     .weightx(1.0)
                                     .anchor(GridBagConstraints.LINE_END)
                                     .insets(5, 0, 0, 0)
                                     .build());

        wClear.addActionListener(e -> model.clear());
        updateCounts();
    }

    public IssuesTableModel getModel() {
        return model;
    }

    private void updateCounts(TableModelEvent event) {
        if (event.getType() == TableModelEvent.DELETE
                || event.getType() == TableModelEvent.INSERT) {
            updateCounts();
        }
    }

    private void updateCounts() {
        final int visible = wTable.getRowCount();
        final int total = model.getRowCount();
        wCount.setText(String.format("%,d issues", visible));
        if (visible == total) {
            wCount.setForeground(Color.BLACK);
        } else {
            wCount.setForeground(Color.BLUE);
        }
    }
}