/**
 * The main menu.
 */

package uk.connorwright.Pulse.gamestates;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Random;

import uk.connorwright.Pulse.entity.Bubble;
import uk.connorwright.Pulse.entity.GameButton;
import uk.connorwright.Pulse.handlers.GameStateManager;
import uk.connorwright.Pulse.handlers.ImageLoader;
import uk.connorwright.Pulse.handlers.Mouse;
import uk.connorwright.Pulse.main.Game;
import uk.connorwright.Pulse.main.GamePanel;

public class MenuState extends GameState {

    int listIndex;
    static String list;

    // bg image
    private BufferedImage bg;

    // bubbles
    private ArrayList<Bubble> bubbles;
    private int bubbleTimer;

    // buttons
    private int currentChoice = 0;
    private GameButton[] options;

    // fonts and colors
    private Color titleColor;
    private Font titleFont;
    private Font font;
    private Font font2;

    // fading
    private int fadeInTimer;
    private int fadeInDelay;
    private int fadeOutTimer;
    private int fadeOutDelay;
    private int alpha;
    private int nextState;

    public boolean displayed;

    public MenuState(GameStateManager gsm) {
        super(gsm);
        init();
    }

    public void init() {

        // load bg image
        bg = ImageLoader.BG;

        // load fonts
        try {
            Font scFont = Font.createFont(
                    Font.TRUETYPE_FONT,
                    getClass().getResourceAsStream("/fonts/SECRCODE.TTF"));
            titleColor = Color.WHITE;
            titleFont = scFont.deriveFont(64f);
            font = scFont.deriveFont(26f);
            font2 = scFont.deriveFont(14f);

        }
        catch(Exception e) {
            e.printStackTrace();
        }

        // show mouse cursor
        Game.setCursor(Game.VISIBLE);

        // set up buttons
        options = new GameButton[2];
        options[0] = new GameButton(320, 300, 100, 50);
        options[0].setText("s t a r t", font);
        options[1] = new GameButton(320, 350, 100, 50);
        options[1].setText("q u i t", font);

        // fade timer
        fadeInTimer = 0;
        fadeInDelay = 60;
        fadeOutTimer = -1;
        fadeOutDelay = 60;

        // music

        // bubbles
        bubbles = new ArrayList<Bubble>();
        bubbleTimer = 0;

    }

    public void update() {

        // check keys
        handleInput();

        // check buttons for hover
        for(int i = 0; i < options.length; i++) {
            if(currentChoice == i) {
                options[i].setHover(true);
            }
            else {
                options[i].setHover(false);
            }
        }

        // update fade
        if(fadeInTimer >= 0) {
            fadeInTimer++;
            alpha = (int) (255.0 * fadeInTimer / fadeInDelay);
            if(fadeInTimer == fadeInDelay) {
                fadeInTimer = -1;
            }
        }
        if(fadeOutTimer >= 0) {
            fadeOutTimer++;
            alpha = (int) (255.0 * fadeOutTimer / fadeOutDelay);
            if(fadeOutTimer == fadeOutDelay) {
                gsm.setState(nextState);
            }
        }
        if(alpha < 0) alpha = 0;
        if(alpha > 255) alpha = 255;

        // bubbles
        bubbleTimer++;
        if(bubbleTimer == 60) {
            bubbles.add(new Bubble(Math.random() * 540 - 100, Math.random() * 100 + 480));
            bubbleTimer = 0;
        }
        for(int i = 0; i < bubbles.size(); i++) {
            if(bubbles.get(i).update()) {
                bubbles.remove(i);
                i--;
            }
        }

    }

    public void draw(Graphics2D g) {


        // draw background
        g.drawImage(bg, 0, 0, null);

        // draw bubbles
        for(int i = 0; i < bubbles.size(); i++) {
            bubbles.get(i).draw(g);
        }

        // draw title
        g.setColor(titleColor);
        g.setFont(titleFont);
        g.drawString("P  U  L  S  E", 100, 180);

        // draw menu options
        g.setFont(font);
        g.setColor(Color.WHITE);

        // draw buttons
        for(int i = 0; i < options.length; i++) {
            options[i].draw(g);
        }

        // other
        g.setFont(font2);
        g.setColor(Color.BLACK);
        g.drawString("2014 Connor W.", 10, 470);

        // draw splash text
        drawSplash(g);

        // draw fade
        if(fadeInTimer >= 0) {
            g.setColor(new Color(255, 255, 255, 255 - alpha));
            g.fillRect(0, 0, GamePanel.WIDTH, GamePanel.HEIGHT);
        }
        if(fadeOutTimer >= 0) {
            g.setColor(new Color(255, 255, 255, alpha));
            g.fillRect(0, 0, GamePanel.WIDTH, GamePanel.HEIGHT);
        }



    }

    private void drawSplash(Graphics2D g){

        if(displayed == false){
        Random r = new Random();
        String items[] = {"Buggy!", "New Game!", "Roll up, roll up!", "Made from Scratch"};


        amount = (int) (Math.random()*25+1);

        list = items[r.nextInt(3+1)];

        System.out.println(list);

        g.setFont(font2);
        g.setColor(Color.BLACK);
        g.drawString(list, 320, 240);

        displayed = true;

        }
    }

    private void select() {

        // already transitioning, cannot select
        if(fadeOutTimer != -1) return;

        // go to level select
        if(currentChoice == 0) {
            nextState = GameStateManager.LEVEL_SELECT_STATE;
            fadeInTimer = -1;
            fadeOutTimer = 0;

        }

        // quit
        else if(currentChoice == 1) {
            System.exit(0);
        }
    }

    public void handleInput() {

        // see if button is clicked
        if(Mouse.isPressed()) {
            select();
        }

        // check if mouse is hovering over buttons
        boolean hit = false;
        for(int i = 0; i < options.length; i++) {
            if(options[i].isHovering(Mouse.x, Mouse.y)) {
                currentChoice = i;
                hit = true;
                break;
            }
        }
        if(!hit) currentChoice = -1;

    }

}