package sk.neuromancer.sphaera.rewrite;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton;
import com.badlogic.gdx.scenes.scene2d.ui.TextButton.TextButtonStyle;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
import com.badlogic.gdx.utils.viewport.StretchViewport;
import com.badlogic.gdx.utils.viewport.Viewport;

public class Menu extends GameState{
    
    
    private MenuState state;
    private World world;
    private float score;
    
    private Stage ui;
    private TextButton playButton;
    private TextButton exitButton;
    private Image logo;
    private Label scoreLabel;
    private Label howToLabel;
    private Label by;
    
    private TextButtonStyle buttonStyle;
    private LabelStyle labelStyle;
    
    public static final String LOGO = "logo.png";
    public static final String BUTTON = "button.png";

    public Menu(Object... remains){
        super(remains);
        if(remains.length > 0){
            state = (MenuState) remains[0];
        }else{
            state = MenuState.START;
        }
        
        switch(state){
        case WIN:
        case PAUSE:
        case POST:
            if(remains.length > 1){
                world = (World) remains[1];
                if(remains.length > 2){
                    this.score = (Float) remains[2];
                }
            }else{
                world = new World();
            }
            break;
        case START:
            world = new World();
            break;
        default:
            break;
        }
        
        ui = new Stage();
        
        Skin skin = new Skin();
        
        logo = new Image(new Texture(Gdx.files.internal(LOGO)));
        
        buttonStyle = new TextButtonStyle();
        Texture buttonTexture = new Texture(Gdx.files.internal(BUTTON));
        
        buttonStyle.up = new TextureRegionDrawable(new TextureRegion(buttonTexture));
        
        if(!buttonTexture.getTextureData().isPrepared()){
            buttonTexture.getTextureData().prepare();
        }
        
        Pixmap downPixmap = buttonTexture.getTextureData().consumePixmap();
        downPixmap.setColor(0.5f, 0, 0, 0.3f);
        downPixmap.fillRectangle(5, 5, 55, 23);
        
        buttonStyle.down = new TextureRegionDrawable(new TextureRegion(new Texture(downPixmap)));
        buttonStyle.font = new BitmapFont();
        
        labelStyle = new LabelStyle(new BitmapFont(), Color.BLACK);
        
        skin.add("default", buttonStyle);
        skin.add("label", labelStyle);
        
        float width = Gdx.graphics.getWidth();
        float height = Gdx.graphics.getHeight();
        
        playButton = new TextButton("PLAY", skin);
        playButton.setSize(width/2.5f, width/6);
        playButton.setPosition(width/2f - width/2.5f, height/3f);
        playButton.addListener(new ClickListener(){
            @Override
            public void clicked(InputEvent event, float x, float y) {
                playClick();
            }
        });
        
        exitButton = new TextButton("EXIT", skin);
        exitButton.setSize(width/2.5f, width/6);
        exitButton.setPosition(width/2f, height/3f);
        exitButton.addListener(new ClickListener(){
            @Override
            public void clicked(InputEvent event, float x, float y) {
                exitClick();
            }
        });
        
        logo.setPosition(width/2 - width/4, width/4);
        logo.setSize(width/2, width/2);
        
        String scoreString = score == 0 ? "" : "Score:" + Float.toString(score);
        
        scoreLabel = new Label(scoreString, skin, "label");
        scoreLabel.setPosition(width/16, 7 * height/8);
        scoreLabel.setFontScale(5);
        
        String howToString = state == MenuState.WIN ? "Congrats! You have won." : "Collect the blue spheres, avoid red ones. Grow! \nSPACE to move. A,D to rotate, SCROLL to zoom.";
        
        howToLabel = new Label(howToString, skin, "label");
        howToLabel.setPosition(width/12, height/8);
        howToLabel.setFontScale(2.5f);
        
        by = new Label("by J08nY", skin, "label");
        by.setPosition(width/2 + width/4, width/2);
        
        
        ui.addActor(logo);
        ui.addActor(by);
        ui.addActor(scoreLabel);
        ui.addActor(howToLabel);
        ui.addActor(playButton);
        ui.addActor(exitButton);
    }

    @Override
    public void show() {
        resize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        Gdx.input.setInputProcessor(ui);
    }

    @Override
    public void render(float delta) {
        Gdx.gl.glClearColor(1,1,1,1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        
        ui.draw();
    }
    
    public void playClick(){
        this.finish();
        if(this.world != null)
            this.world.dispose();
        this.setNext(new World(this));
    }
    
    public void exitClick(){
        this.finish();
        if(this.world != null)
            this.world.dispose();
        this.setNext(new Exit());
    }
    
    @Override
    public void tick(long tickCount) {
        ui.act(1/SphaeraGame.TPS);
    }

    @Override
    public void resize(int width, int height) {
        
    }

    @Override
    public void pause() {
        
    }

    @Override
    public void resume() {
        
    }

    @Override
    public void hide() {
        Gdx.gl.glClearColor(1,1,1,1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    }

    @Override
    public void dispose() {
        if(ui != null)
            ui.dispose();
    }

    public enum MenuState{
        START, PAUSE, POST, WIN;
    }

    @Override
    public GameState next() {
        switch(state){
        case PAUSE:
            //world or exit
            break;
        case POST:
            //world or exit
            break;
        case START:
            //world or exit
            break;
        default:
            break;
        }
        
        return super.next();
    }
}