package uk.org.floop.epq3d;


import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.FileReader;
import java.io.IOException;
import java.util.Objects;

/**
 * Stores variables which are required for drawing. Settings, Drawing images etc.
 */
public class drawData {
    // config

    public int scrX;
    public int scrY;
    public int delay;
    public int FOV;

    // debug
    public boolean debugHud;
    public boolean backfaceCullingDisabled;
    public boolean drawZBuffer;
    public int frustumCullingOverridePercent;
    public boolean drawLines;
    // player
    public double playerSpeed;
    public double playerSprintModifier;
    // draw onto
    BufferedImage bufImg;
    public int[][] drawImg;
    public int[][] zBuf;
    public BufferedImage debugImg;

    // draw data
    public Matrix camMatrix;
    public double lastFrameTime; // measured in seconds
    public Point3D playerPos;
    public double FPDis;
    public Plane[] frustumPlanes = new Plane[6];
    public Point2D mouseRel;

    public drawData(String filePath){
        Object obj;
        try {
            JSONParser parser = new JSONParser();
            obj = parser.parse(new FileReader(filePath));
        } catch (IOException | ParseException e) {
            throw new RuntimeException(e);
        }
        // save config
        JSONObject file = (JSONObject)obj;
        scrX = (int) (long) file.get("screenWidth");
        scrY = (int) (long) file.get("screenHeight");
        delay = (int) ( 1000*(1/((double) (long) file.get("maxFPS"))));
        FOV = (int) (long) file.get("FOV");
        playerSpeed = (double) file.get("playerSpeed");
        playerSprintModifier = (double) file.get("playerSprintModifier");


        // debug
        JSONObject debugFile = (JSONObject) file.get("debug");
        if(toBoolean(debugFile.get("masterDebugToggle"))){
            debugHud = toBoolean(debugFile.get("drawDebugHud"));
            backfaceCullingDisabled = toBoolean(debugFile.get("overrideBackFaceCulling"));
            frustumCullingOverridePercent = (int)(long)debugFile.get("frustumCullingOverridePercent");
            drawZBuffer = toBoolean(debugFile.get("drawZBuffer"));
            drawLines = toBoolean(debugFile.get("drawLines"));

        }
        bufImg = new BufferedImage(scrX, scrY, BufferedImage.TYPE_INT_ARGB);
        drawImg = new int[scrX][scrY];
        zBuf = new int[scrX][scrY];
        debugImg = new BufferedImage(scrX, scrY, BufferedImage.TYPE_INT_ARGB);
        debugImg.createGraphics();
        debugImg.getGraphics().setColor(new Color(0,0,0,255));
    }
    private Boolean toBoolean(Object obj){
        if(Objects.equals(obj.toString(), "enabled")){
            return true;
        } else {
            return false;
        }
    }
}