package com.studentgui.apppages;

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Instructional materials and resources reference page.
 *
 * <p>Provides a simple placeholder panel for displaying links, documentation, or references
 * to external instructional resources. This is a static informational view without data
 * persistence or assessment functionality.</p>
 *
 * <p><b>Current Implementation:</b></p>
 * <ul>
 *   <li>Read-only text area with placeholder content</li>
 *   <li>Refresh button (currently logs action but performs no operation)</li>
 *   <li>No database persistence or session tracking</li>
 *   <li>Intended for future expansion with resource links, PDF viewers, or material management UI</li>
 * </ul>
 *
 * <p><b>Potential Future Enhancements:</b></p>
 * <ul>
 *   <li>Dynamic listing of student-specific materials from {@code StudentDataFiles/<student>/InstructionalMaterials/}</li>
 *   <li>PDF preview integration for viewing documents inline</li>
 *   <li>File upload and organization capabilities</li>
 *   <li>Links to online resources (curriculum guides, training videos, vendor documentation)</li>
 *   <li>Material assignment workflow (track which materials were provided to student/family)</li>
 * </ul>
 *
 * <p>This page does not implement listener interfaces and does not interact with the database.
 * It serves as a navigation target and placeholder for future resource management features.</p>
 */
public class InstructionalMaterials extends JPanel {
    private static final Logger LOG = LoggerFactory.getLogger(InstructionalMaterials.class);

    /**
     * Create the Instructional Materials page.
     */
    public InstructionalMaterials() {
        setLayout(new BorderLayout());
    JPanel p = new JPanel(new GridBagLayout());
    JPanel view = new JPanel(new BorderLayout());
    view.add(p, BorderLayout.NORTH);
    view.setBorder(javax.swing.BorderFactory.createEmptyBorder(20,20,20,20));
    JScrollPane scroll = new JScrollPane(view);
    scroll.getAccessibleContext().setAccessibleName("Instructional Materials scroll pane");
    GridBagConstraints gbc = new GridBagConstraints(); gbc.insets=new Insets(2,2,2,2); gbc.fill=GridBagConstraints.BOTH;
    JLabel title = new JLabel("Instructional Materials", JLabel.LEFT);
        title.setFont(title.getFont().deriveFont(Font.BOLD,28f));
        title.getAccessibleContext().setAccessibleName("Instructional Materials Title");
        gbc.gridx=0; gbc.gridy=0; p.add(title, gbc);

    int globalLabel = com.studentgui.uicomp.PhaseScoreField.getGlobalLabelWidth();
    JLabel areaLabel = new JLabel("Materials:"); areaLabel.setPreferredSize(new java.awt.Dimension(globalLabel, areaLabel.getPreferredSize().height)); gbc.gridy=1; p.add(areaLabel, gbc);
    JTextArea area = new JTextArea(20,60); area.setEditable(false); area.setText("Instructional materials listing placeholder. Add docs or links here."); area.setToolTipText("Instructional materials and links"); area.getAccessibleContext().setAccessibleName("Instructional materials"); gbc.gridy=2; p.add(area, gbc);
    areaLabel.setLabelFor(area);
    JButton refresh = new JButton("Refresh"); refresh.addActionListener((ActionEvent e)-> LOG.info("Refresh requested")); refresh.setToolTipText("Refresh the instructional materials listing"); refresh.setMnemonic(KeyEvent.VK_R); refresh.getAccessibleContext().setAccessibleName("Refresh instructional materials"); gbc.gridy=3; p.add(refresh, gbc);

        add(scroll, BorderLayout.CENTER);
        SwingUtilities.invokeLater(()->{ p.setPreferredSize(p.getPreferredSize()); revalidate(); });
    }
}