import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JButton;
import javax.swing.Box;
import javax.swing.BorderFactory;
import javax.swing.JOptionPane;
import javax.swing.border.Border;
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Cursor;
import java.awt.Color;

import cafe.biskuteri.hinoki.Tree;
import java.io.IOException;

class
ComposeWindow extends JFrame {

    private JKomasto
    primaire;

    private MastodonApi
    api;

//   -  -%-  -

    private Composition
    composition;

    private ComposeComponent
    display;

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

    public void
    setComposition(Composition composition)
    {
        assert composition != null;
        this.composition = composition;
        syncDisplayToComposition();
    }

    public void
    newComposition()
    {
        composition = new Composition();
        composition.text = "";
        composition.visibility = PostVisibility.UNLISTED;
        composition.replyToPostId = null;
        composition.contentWarning = null;
        syncDisplayToComposition();
    }

    public void
    submit()
    {
        syncCompositionToDisplay();

        if (composition.replyToPostId != null)
            assert !composition.replyToPostId.trim().isEmpty();
        if (composition.contentWarning != null)
            assert !composition.contentWarning.trim().isEmpty();

        display.setSubmitting(true);
        api.submit(
            composition.text, composition.visibility,
            composition.replyToPostId, composition.contentWarning,
            new RequestListener() {

                public void
                connectionFailed(IOException eIo)
                {
                    JOptionPane.showMessageDialog(
                        ComposeWindow.this,
                        "Tried to submit post, failed..."
                        + "\n" + eIo.getMessage()
                    );
                }

                public void
                requestFailed(int httpCode, Tree<String> json)
                {
                    JOptionPane.showMessageDialog(
                        ComposeWindow.this,
                        "Tried to submit post, failed..."
                        + "\n" + json.get("error").value
                        + "(HTTP error code: " + httpCode + ")"
                    );
                }

                public void
                requestSucceeded(Tree<String> json)
                {
                    newComposition();
                }

            }
        );
        display.setSubmitting(false);
    }

//   -  -%-  -

    private void
    syncDisplayToComposition()
    {
        display.setText(composition.text);
        display.setReplyToPostId(composition.replyToPostId);
        display.setVisibility(stringFor(composition.visibility));
        display.setContentWarning(composition.contentWarning);
    }

    private void
    syncCompositionToDisplay()
    {
        composition.text = display.getText();
        composition.visibility =
            visibilityFrom(display.getVisibility());
        composition.replyToPostId =
            nonEmpty(display.getReplyToPostId());
        composition.contentWarning =
            nonEmpty(display.getContentWarning());
    }

//   -  -%-  -

    private static String
    nonEmpty(String s)
    {
        if (s.trim().isEmpty()) return null;
        return s;
    }

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

    ComposeWindow(JKomasto primaire)
    {
        super("Submit a new post");
        this.primaire = primaire;
        this.api = primaire.getMastodonApi();

        getContentPane().setPreferredSize(new Dimension(360, 270));
        pack();
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);

        display = new ComposeComponent(this);
        newComposition();

        setContentPane(display);
    }

//   -  -%-  -

    private static final String
    stringFor(PostVisibility visibility)
    {
        switch (visibility)
        {
            case PUBLIC: return "Public";
            case UNLISTED: return "Unlisted";
            case FOLLOWERS: return "Followers";
            case MENTIONED: return "Mentioned";
        }

        assert false; return null;
    }

    private static final PostVisibility
    visibilityFrom(String string)
    {
        if (string.equals("Public"))
            return PostVisibility.PUBLIC;
        if (string.equals("Unlisted"))
            return PostVisibility.UNLISTED;
        if (string.equals("Followers"))
            return PostVisibility.FOLLOWERS;
        if (string.equals("Mentioned"))
            return PostVisibility.MENTIONED;

        assert false; return null;
    }

}



class
ComposeComponent extends JPanel
implements ActionListener {

    private ComposeWindow
    primaire;

//   -  -%-  -

    private JTextArea
    text;

    private JTextField
    reply, contentWarning;

    private JComboBox<String>
    visibility;

    private JButton
    submit;

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

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

    public void
    setReplyToPostId(String postId)
    {
        this.reply.setText(postId);
    }

    public void
    setVisibility(String visibility)
    {
        if (visibility.equals("Public"))
            this.visibility.setSelectedIndex(0);
        else if (visibility.equals("Unlisted"))
            this.visibility.setSelectedIndex(1);
        else if (visibility.equals("Followers"))
            this.visibility.setSelectedIndex(2);
        else if (visibility.equals("Mentioned"))
            this.visibility.setSelectedIndex(3);
    }

    public void
    setContentWarning(String contentWarning)
    {
        this.contentWarning.setText(contentWarning);
    }

    public String
    getText()
    {
        return text.getText();
    }

    public String
    getReplyToPostId()
    {
        return reply.getText();
    }

    public String
    getContentWarning()
    {
        return contentWarning.getText();
    }

    public String
    getVisibility()
    {
        return (String)visibility.getSelectedItem();
    }

    public void
    setSubmitting(boolean submitting)
    {
        if (submitting)
        {
            text.setEnabled(false);
            visibility.setEnabled(false);
            submit.setEnabled(false);
            setCursor(new Cursor(Cursor.WAIT_CURSOR));
        }
        else
        {
            text.setEnabled(true);
            visibility.setEnabled(true);
            submit.setEnabled(true);
            setCursor(null);
        }
    }

//   -  -%-  -

    public void
    actionPerformed(ActionEvent eA) { primaire.submit(); }

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

    ComposeComponent(ComposeWindow primaire)
    {
        this.primaire = primaire;

        Border b1 = BorderFactory.createEmptyBorder(8, 8, 8, 8);
        Border b2 = BorderFactory.createEmptyBorder(4, 4, 4, 4);
        Border b3 = BorderFactory.createLineBorder(Color.GRAY);
        Border bc = BorderFactory.createCompoundBorder(b3, b2);

        reply = new JTextField();
        JLabel replyLabel = new JLabel("In reply to: ");
        replyLabel.setLabelFor(reply);

        contentWarning = new JTextField();
        JLabel cwLabel = new JLabel("Content warning: ");
        cwLabel.setLabelFor(contentWarning);

        JPanel top = new JPanel();
        top.setOpaque(false);
        top.setLayout(new GridLayout(2, 2, 8, 0));
        top.add(replyLabel);
        top.add(reply);
        top.add(cwLabel);
        top.add(contentWarning);

        visibility = new JComboBox<>(new String[] {
            "Public",
            "Unlisted",
            "Followers",
            "Mentioned"
            // Where should we be saving strings..
        });
        visibility.setPreferredSize(new Dimension(64, 24));

        submit = new JButton("Submit");
        submit.addActionListener(this);

        Box bottom = Box.createHorizontalBox();
        bottom.add(Box.createGlue());
        bottom.add(visibility);
        bottom.add(Box.createHorizontalStrut(8));
        bottom.add(submit);

        text = new JTextArea();
        text.setLineWrap(true);
        text.setWrapStyleWord(true);
        text.setFont(text.getFont().deriveFont(16f));
        text.setBorder(bc);

        setLayout(new BorderLayout(0, 8));
        add(top, BorderLayout.NORTH);
        add(text, BorderLayout.CENTER);
        add(bottom, BorderLayout.SOUTH);

        setBorder(b1);
    }

}