import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.awt.Color;
import java.util.regex.Pattern;

import javax.imageio.ImageIO;

import java.awt.Graphics2D;
import java.awt.image.BufferedImage;

public class ArcadeReader {
    /*
     * Important data we would like to know for all games:
     * Score
     * Rank (Probably implementation-specific)
     * Note accuracy [List]
     *  Marvelous
     *  Perfect
     *  Great
     *  Good
     *  Bad
     *  OK
     *  Miss
     * Difficulty
     * Song Name / Title
     * Percentage (Can be EX Score, a percentage accuracy or survival percent)
     * Max Combo
     * Other (Not used by the auto detecter, used for storing misc. data.)
     * 
     * Notes about Readers:
     * Love Live
     *  - Does not use: Marvelous, OK
     * Project Diva
     *  - Does not use: Marvelous, OK
     *  - Fail condition is MISSxTAKE
     * DDR
     *  - Does not use: Max Combo (Cannot calculate in combo carryover mode), Bad
     *  - Fail condition is E rank.
     * Pop'n Music
     *  - Does not use: Marvelous, Bad, OK
     *  - Stores number of bars filled in Percentage.
     *  - Fail condition is <17 in the meter (max is 24)
     * Sound Voltex
     *  - Sound Voltex uses the note accuracy list slots as follows: 
     *      Early:
     *          Error - Marvelous
     *          Near - Perfect
     *          Critical - Great
     *          S-Critical - Good
     *          Critical - Bad
     *          Near - OK
     *          Error - Miss
     *  - Sound Voltex stores EX score in Percentage.
     *  - Max Combo is Max Chain
     *  - Sound Voltex will store additional data about accuracy of note types as such:
     *      {"chip":{"scritical":0,"critical":0,"near":0,"error":0},"long":{"scritical":0,"error":0},"vol":{"scritical":0,"error":0},"gauge":<excessive|normal>,"gauge_pct":100}
     *      //Also storing what type of clear gauge was met and the % of the gauge.
     *  - Fail condition is <70% normal gauge.
     * IIDX
     *  - Not going to support right now.
     * 
     */
    public static void retrieveData(Path img) {
        new LoveLiveReader().interpretBoxes(img);
    }
}
class ColorRange{
    int r_h,r_l;
    int g_h,g_l;
    int b_h,b_l;
    ColorRange(int r_l,int r_h,int g_l,int g_h,int b_l,int b_h) {
        this.r_l=r_l;
        this.r_h=r_h;
        this.g_l=g_l;
        this.g_h=g_h;
        this.b_l=b_l;
        this.b_h=b_h;
    }
    boolean colorInRange(Color col) {
        return col.getRed()>=r_l&&col.getRed()<=r_h&&col.getGreen()>=g_l&&col.getGreen()<=g_h&&col.getBlue()>=b_l&&col.getBlue()<=b_h;
    }
}
class Box{
    int x,y,w,h;
    boolean ja_required;
    final static int BOX_THRESHOLD=8; //How many pixels outside the specified region the score can be.
    Box(int x,int y,int w, int h) {
        this.x=x;
        this.y=y;
        this.w=w;
        this.h=h;
    }
    boolean insideBox(int x,int y) {
        return this.x-BOX_THRESHOLD<=x&&this.x+this.w+BOX_THRESHOLD>=x&&this.y-BOX_THRESHOLD<=y&&this.y+this.h+BOX_THRESHOLD>=y;
    }
}
class LoveLiveReader extends Reader{
    final static int REGION_PADDING = 32;
    LoveLiveReader(){
        readRegions.add(new Box(713,401,232,50)); //score[0]
        readRegions.add(new Box(613,290,65,36)); //rank[1]
        readRegions.add(new Box(509,604,190,54)); //notes[2]
        readRegions.add(new Box(509,680,190,54)); //notes[3]
        readRegions.add(new Box(509,760,190,54)); //notes[4]
        readRegions.add(new Box(509,840,190,54)); //notes[5]
        readRegions.add(new Box(509,920,190,54)); //notes[6]
        readRegions.add(new Box(26,374,265,36)); //difficulty[7]
        readRegions.add(new Box(277,165,572,40)); //title[8]
        readRegions.add(new Box(716,502,226,45)); //pct[9]
        readRegions.add(new Box(782,452,158,50)); //maxcombo[10]
    }

    void seek(int[]arr,int i,ColorRange SEEKCOLOR,Color FINALCOLOR,int width) {
        arr[i]=FINALCOLOR.getRGB();
        for (int x=-1;x<=1;x++) {
            for (int y=-1;y<=1;y++) {
                if (SEEKCOLOR.colorInRange(new Color(arr[i+x+y*width]))) {
                    seek(arr,i+x+y*width,SEEKCOLOR,FINALCOLOR,width);
                }
            }
        }
    }

    void ColorFilter(int[] arr,int region,int width) {
        final int TRANSPARENT = new Color(0,0,0,0).getRGB();
        switch (region) {
            case 0:{
                final ColorRange TARGETCOLOR = new ColorRange(240,255,130,150,0,10);
                final ColorRange SEEKINGCOLOR = new ColorRange(140,255,110,255,0,200);
                final Color FINALCOLOR = Color.MAGENTA;
                for (int i=0;i<arr.length;i++) {
                    Color col = new Color(arr[i],true);
                    if (TARGETCOLOR.colorInRange(col)) {
                        seek(arr,i,SEEKINGCOLOR,FINALCOLOR,width);
                    }
                }
                for (int i=0;i<arr.length;i++) {
                    Color col = new Color(arr[i],true);
                    if (!col.equals(Color.MAGENTA)) {
                        arr[i]=TRANSPARENT;
                    }
                }
            }break;
        }
    }

    void interpretBoxes(Path img){
        /*String dataString = readAllBoxes(img);
        String[] data = dataString.split(Pattern.quote("\n"));
        String[] ja_data = data[0].split(Pattern.quote(")"));
        String[] en_data = data[2].split(Pattern.quote(")"));
        trimAllData(ja_data);
        trimAllData(en_data);
        System.out.println(Arrays.toString(ja_data));
        System.out.println(Arrays.toString(en_data));*/

        int regionHeights = 0;
        int maxWidth = 0;
        for (int i=0;i<readRegions.size();i++) {
            regionHeights+=readRegions.get(i).h+REGION_PADDING;
            if (readRegions.get(i).w>maxWidth) {
                maxWidth=readRegions.get(i).w;
            }
        }
        try {
            BufferedImage originalImg = ImageIO.read(img.toFile());
            BufferedImage cutImg = new BufferedImage(maxWidth,regionHeights,BufferedImage.TYPE_INT_ARGB);
            Graphics2D g = cutImg.createGraphics();
            int currentHeight=0;
            for (int i=0;i<readRegions.size();i++) {
                int[] arr = originalImg.getRGB(readRegions.get(i).x, readRegions.get(i).y, readRegions.get(i).w, readRegions.get(i).h, null, 0, readRegions.get(i).w);
                //System.out.println(Arrays.toString(arr));
                ColorFilter(arr,i,readRegions.get(i).w);
                //g.drawImage(originalImg, 0,currentHeight,readRegions.get(i).w,readRegions.get(i).h+currentHeight,readRegions.get(i).x, readRegions.get(i).y, readRegions.get(i).x+readRegions.get(i).w, readRegions.get(i).y+readRegions.get(i).h, null);
                cutImg.setRGB(0,currentHeight,readRegions.get(i).w,readRegions.get(i).h,arr,0,readRegions.get(i).w);
                currentHeight+=readRegions.get(i).h+REGION_PADDING;
            }
            Path output = Paths.get("result.png");
            ImageIO.write(cutImg,"png",output.toFile());
            String dataString = readAllBoxes(output);
            String[] data = dataString.split(Pattern.quote("\n"));
            String[] ja_data = data[0].split(Pattern.quote(")"));
            String[] en_data = data[2].split(Pattern.quote(")"));
            trimAllData(ja_data);
            trimAllData(en_data);
            System.out.println(Arrays.toString(ja_data));
            System.out.println(Arrays.toString(en_data));
            g.dispose();
        } catch (IOException e) {
            e.printStackTrace();
        }
        //System.out.println(data[0]);
        //System.out.println(data[2]);
    }
}
abstract class Reader{
    int score;
    int rank;
    int[] notes = new int[7];
    int difficulty;
    String title;
    int pct;
    int maxcombo;
    String other;
    List<Box> readRegions = new ArrayList<>();
    String readAllBoxes(Path img) {
        try {
            Process p = Runtime.getRuntime().exec(new String[]{"python3","runocr.py","ja",img.toAbsolutePath().toString()});
            while (p.isAlive());
            InputStreamReader result = new InputStreamReader(p.getInputStream());
            StringBuilder sb = new StringBuilder();
            while (result.ready()) {
                sb.append((char)result.read());
            }
            result.close();
            sb.append("\n");
            p = Runtime.getRuntime().exec(new String[]{"python3","runocr.py","en",img.toAbsolutePath().toString()});
            while (p.isAlive());
            result = new InputStreamReader(p.getInputStream());
            while (result.ready()) {
                sb.append((char)result.read());
            }
            return sb.toString();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
    }
    void trimAllData(String[] data) {
        StringBuilder sb = new StringBuilder();
        for (int i=0;i<data.length;i++) {
            sb.delete(0,sb.length());
            for (int j=0;j<data[i].length();j++) {
                if (data[i].charAt(j)!='['&&data[i].charAt(j)!='('&&data[i].charAt(j)!=')'&&data[i].charAt(j)!=']') {
                    sb.append(data[i].charAt(j));
                }
            }
            data[i]=sb.toString();
        }
    }
}