import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.BorderFactory;
import javax.swing.border.Border;
import java.awt.Font;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.util.List;
import java.util.ArrayList;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Cursor;
import cafe.biskuteri.hinoki.Tree;
import java.io.IOException;
import java.awt.event.ComponentListener;
import java.awt.event.ComponentEvent;

class
NotificationsWindow extends JFrame {

	private JKomasto
	primaire;

	private List<Notification>
	notifications;

	private MastodonApi
	api;

//	 -	-%-	 -

	private NotificationsComponent
	display;

//	 -	-%-	 -

	private static int
	ROW_COUNT = NotificationsComponent.ROW_COUNT;

//	---%-@-%---

	public void
	displayEntity(Tree<String> entity)
	{
		notifications = new ArrayList<>();
		for (Tree<String> t: entity)
		{
			Notification n = new Notification();

			n.id = t.get("id").value;

			String type = t.get("type").value;
			if (type.equals("favourite"))
				n.type = NotificationType.FAVOURITE;
			else if (type.equals("reblog"))
				n.type = NotificationType.BOOST;
			else if (type.equals("mention"))
				n.type = NotificationType.MENTION;
			else if (type.equals("follow"))
				n.type = NotificationType.FOLLOW;
			else if (type.equals("follow_request"))
				n.type = NotificationType.FOLLOWREQ;
			else if (type.equals("poll"))
				n.type = NotificationType.POLL;
			else if (type.equals("status"))
				n.type = NotificationType.ALERT;

			Tree<String> actor = t.get("account");
			String aid, aname, adisp;
			aid = actor.get("id").value;
			aname = actor.get("username").value;
			adisp = actor.get("display_name").value;
			if (!adisp.isEmpty()) n.actorName = adisp;
			else n.actorName = aname;
			n.actorNumId = aid;
						
			if (n.type != NotificationType.FOLLOW)
			{
				Tree<String> post = t.get("status");
				String pid, phtml, ptext;
				pid = post.get("id").value;
				phtml = post.get("content").value;
				ptext = TimelineComponent.textApproximation(phtml);
				n.postId = pid;
				n.postText = ptext;
			}

			notifications.add(n);
		}
	}

	public void
	showLatestPage()
	{
		fetchPage(null, null);
		display.showNotifications(notifications);
	}

	public void
	showPrevPage()
	{
		assert !notifications.isEmpty();
		fetchPage(null, notifications.get(0).id);
		if (notifications.size() < ROW_COUNT) showLatestPage();
		display.showNotifications(notifications);
	}

	public void
	showNextPage()
	{
		assert !notifications.isEmpty();
		int last = notifications.size() - 1;
		fetchPage(notifications.get(last).id, null);
		display.showNotifications(notifications);
	}

//	 -	-%-	 -

	private void
	fetchPage(String maxId, String minId)
	{
		display.setCursor(new Cursor(Cursor.WAIT_CURSOR));
		api.getNotifications(
			ROW_COUNT, maxId, minId,
			new RequestListener() {
			
				public void
				connectionFailed(IOException eIo)
				{
					eIo.printStackTrace();
				}

				public void
				requestFailed(int httpCode, Tree<String> json)
				{
					System.err.println(httpCode + json.get("error").value);
				}

				public void
				requestSucceeded(Tree<String> json)
				{
					displayEntity(json);	
				}
			}
		);
		display.setCursor(null);
		repaint();
	}

//	---%-@-%---

	NotificationsWindow(JKomasto primaire)
	{
		super("Notifications");
		this.primaire = primaire;
		this.api = primaire.getMastodonApi();

		notifications = new ArrayList<>();

		display = new NotificationsComponent(this);
		display.setPreferredSize(new Dimension(256, 260));
		setContentPane(display);
		pack();

		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
		setVisible(true);
	}

}

class
NotificationsComponent extends JPanel
implements ActionListener {

	private NotificationsWindow
	primaire;

	private JButton
	prev, next;

//	 -	-%-	 -

	private List<NotificationComponent>
	rows;

//	 -	-%-	 -

	static final int
	ROW_COUNT = 10;

//	---%-@-%---

	public void
	showNotifications(List<Notification> notifications)
	{
		assert notifications.size() == rows.size();
		for (int o = 0; o < rows.size(); ++o)
		{
			Notification n = notifications.get(o);
			NotificationComponent c = rows.get(o);
			c.setName(n.actorName);
			switch (n.type)
			{
				case MENTION: c.setType("mentioned"); break;
				case BOOST: c.setType("boosted"); break;
				case FAVOURITE: c.setType("favourited"); break;
				case FOLLOW: c.setType("followed"); break;
				case FOLLOWREQ: c.setType("req. follow"); break;
				case POLL: c.setType("poll ended"); break;
				case ALERT: c.setType("posted"); break;
			}
			c.setText(n.postText);
		}
	}

//	 -	-%-	 -

	public void
	actionPerformed(ActionEvent eA)
	{
		if (eA.getSource() == prev) primaire.showPrevPage();
		if (eA.getSource() == next) primaire.showNextPage();
	}

//	---%-@-%---

	NotificationsComponent(NotificationsWindow primaire)
	{
		this.primaire = primaire;

		Border b = BorderFactory.createEmptyBorder(8, 8, 8, 8);

		rows = new ArrayList<>();
		for (int n = ROW_COUNT; n > 0; --n)
			rows.add(new NotificationComponent());

		prev = new JButton("<");
		next = new JButton(">");
		prev.addActionListener(this);
		next.addActionListener(this);

		JPanel centre = new JPanel();
		centre.setLayout(new GridLayout(ROW_COUNT, 1));
		for (NotificationComponent c: rows) centre.add(c);

		Box bottom = Box.createHorizontalBox();
		bottom.add(Box.createGlue());
		bottom.add(prev);
		bottom.add(Box.createHorizontalStrut(8));
		bottom.add(next);
		bottom.setBorder(b);

		setLayout(new BorderLayout());
		add(centre);
		add(bottom, BorderLayout.SOUTH);
	}

}

class
NotificationComponent extends JComponent
implements ComponentListener {

	private JLabel
	type;

	private JLabel
	name, text;

//	---%-@-%---

	public void
	setType(String n) { type.setText(n); }

	public void
	setName(String n) { name.setText(n); }

	public void
	setText(String n) { text.setText(n); }

//	 -	-%-	 -

	public void
	componentResized(ComponentEvent eC)
	{
		int w = getWidth(), h = getHeight();
		name.setPreferredSize(new Dimension(w * 7 / 20, h));
		type.setPreferredSize(new Dimension(w * 6 / 20, h));
		text.setPreferredSize(new Dimension(w * 5 / 20, h));

		name.setMaximumSize(new Dimension(w * 7 / 20, h));
		type.setMaximumSize(new Dimension(w * 6 / 20, h));
		text.setMaximumSize(new Dimension(w * 5 / 20, h));
	}

	public void
	componentShown(ComponentEvent eC) { }

	public void
	componentHidden(ComponentEvent eC) { }
	
	public void
	componentMoved(ComponentEvent eC) { }

//	---%-@-%---

	NotificationComponent()
	{
		Font f = new Font("Dialog", Font.PLAIN, 12);
		Font f1 = f.deriveFont(Font.PLAIN, 14);
		Font f2 = f.deriveFont(Font.PLAIN, 11);
		Font f3 = f.deriveFont(Font.ITALIC, 14);

		Color c = new Color(0, 0, 0, 25);
		Border b1 = BorderFactory.createMatteBorder(0, 0, 1, 0, c);

		name = new JLabel();
		type = new JLabel();
		text = new JLabel();
		name.setFont(f1);
		type.setFont(f2);
		text.setFont(f3);
		type.setHorizontalAlignment(JLabel.RIGHT);

		setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
		add(Box.createHorizontalStrut(4));
		add(name);
		add(Box.createHorizontalStrut(8));
		add(type);
		add(Box.createHorizontalStrut(8));
		add(text);
		add(Box.createHorizontalStrut(4));

		this.addComponentListener(this);
		setBorder(b1);
	}

}