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

public abstract class Reader{
    final static int REGION_PADDING = 32;
    final static boolean NUMBER = true;
    int score;
    int rank;
    int[] notes = new int[7];
    int difficulty;
    String title="";
    double pct;
    int maxcombo;
    String other="";
    String[] sig_data;
    List<Box> readRegions = new ArrayList<>();
    int sig_data_size = 0;
    final int TRANSPARENT = new Color(0,0,0,0).getRGB();
    protected void addRegion(Box box) {
        addRegion(box,false);
    }
    protected void addRegion(Box box,boolean isNumb) {
        readRegions.add(box);
        if (isNumb) {
            sig_data_size++;
        }
    }
    protected void init() {
        sig_data = new String[readRegions.size()];
    }
    String parseOutCommas(String str) {
        StringBuilder sb = new StringBuilder();
        boolean insideStr = false;
        char escapeChar = '\'';
        for (int i=0;i<str.length();i++) {
            if (!insideStr) {
                if (str.charAt(i)=='\''||str.charAt(i)=='"') {
                    insideStr=true;
                    escapeChar=str.charAt(i);
                }
            } else {
                if (str.charAt(i)==escapeChar) {
                    insideStr=false;
                }
            }
            if (insideStr&&str.charAt(i)==',') {
                sb.append('،');
            } else {
                sb.append(str.charAt(i));
            }
        }
        return sb.toString();
    }
    public abstract void interpretBoxes(Path file);
    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 "";
    }
    String interpretOutput(String[] jp_data,String[] en_data,String[] sig_data) {
     //[6, 0, 218, 0, 218, 48, 6, 48, 32 5 4 1 5, 0.9670235803680689]
        //For each data point we want to first see if it's within the correct rectangular bounds and from there parse it as such.
        double[] accuracy = new double[readRegions.size()];
        String[] finalData = new String[readRegions.size()];
        for (int i=0;i<finalData.length;i++) {
            finalData[i]="";
        }
        for (int i=0;i<en_data.length;i+=10) {
            int spacing=0;
            for (int j=0;j<readRegions.size();j++) {
                int midpoint=(int)(Double.parseDouble(en_data[i+1])+Double.parseDouble(en_data[i+5]))/2;
                if (midpoint>=spacing&&midpoint<=spacing+readRegions.get(j).h+REGION_PADDING
                    /*&&accuracy[j]<Double.parseDouble(en_data[i+9]) Only for jp string testing.*/) {
                    System.out.print("[");
                    for (int k=0;k<10;k++) {
                        if (k!=0) {
                            System.out.print(",");
                        }
                        System.out.print(en_data[i+k]);
                    }
                    System.out.print("]"); 
                    System.out.println(" belongs to region "+j+".");
                    finalData[j]=finalData[j]+"\n"+en_data[i+8]
                        .substring(1,en_data[i+8].length()-1); //The beginning and endings have a ', so we remove it.
                    if (Double.parseDouble(en_data[i+9])>accuracy[j]) {
                        accuracy[j]=Double.parseDouble(en_data[i+9]);
                    }
                    break;
                }
                spacing+=readRegions.get(j).h+REGION_PADDING;
            }
        }
        for (int i=0;i<jp_data.length;i+=10) {
            int spacing=0;
            for (int j=0;j<readRegions.size();j++) {
                int midpoint=(int)(Double.parseDouble(jp_data[i+1])+Double.parseDouble(jp_data[i+5]))/2;
                if (midpoint>=spacing&&midpoint<=spacing+readRegions.get(j).h+REGION_PADDING
                    &&accuracy[j]<Double.parseDouble(jp_data[i+9])) {
                    System.out.print("JP[");
                    for (int k=0;k<10;k++) {
                        if (k!=0) {
                            System.out.print(",");
                        }
                        System.out.print(jp_data[i+k]);
                    }
                    System.out.print("]"); 
                    System.out.println(" belongs to region "+j+".");
                    if (accuracy[j]!=0) {
                        finalData[j]="";
                    }
                    finalData[j]=finalData[j]+"\n"+jp_data[i+8]
                        .substring(1,jp_data[i+8].length()-1); //The beginning and endings have a ', so we remove it.
                    accuracy[j]=0;
                    break;
                }
                spacing+=readRegions.get(j).h+REGION_PADDING;
            }
        }
        for (int i=0;i<sig_data.length;i++) {
            if (!sig_data[i].isEmpty()) {
                finalData[i]=sig_data[i];
            }
        }
        System.out.println(Arrays.toString(finalData));
        return interpretResults(finalData);  
    };
    abstract String interpretResults(String[] finalData);
    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().trim();
        }
    }

    void seek(int[]arr,int i,ColorRange SEEKCOLOR,Color FINALCOLOR,int width) {
        seek(arr,i,SEEKCOLOR,FINALCOLOR,width,0);
    }

    int seek(int[]arr,int i,ColorRange SEEKCOLOR,Color FINALCOLOR,int width,int farthestRight) {
        arr[i]=FINALCOLOR.getRGB();
        int X = i%width;
        for (int x=-1;x<=1;x++) {
            for (int y=-1;y<=1;y++) {
                int newX=(i+x+y*width)%width;
                int newY=(i+x+y*width)/width;
                if (newX>=0&&newY>=0&&newX<width&&newY<arr.length/width) {
                    Color col = new Color(arr[i+x+y*width]);
                    if (!col.equals(Color.MAGENTA)&&SEEKCOLOR.colorInRange(col)) {
                        farthestRight=seek(arr,i+x+y*width,SEEKCOLOR,FINALCOLOR,width,farthestRight);
                    }
                }
            }
        }
        return X>farthestRight?X:farthestRight;
    }
    void seekThreshold(int[]arr,int i,int threshold,Color FINALCOLOR,int width) {
        seekThreshold(arr,i,threshold,FINALCOLOR,width,0);
    }

    int seekThreshold(int[]arr,int i,int threshold,Color FINALCOLOR,int width,int farthestRight) {
        arr[i]=FINALCOLOR.getRGB();
        int X = i%width;
        for (int x=-1;x<=1;x++) {
            for (int y=-1;y<=1;y++) {
                int newX=(i+x+y*width)%width;
                int newY=(i+x+y*width)/width;
                if (newX>=0&&newY>=0&&newX<=width&&newY<=arr.length/width) {
                    Color col = new Color(arr[i+x+y*width]);
                    if (!col.equals(Color.MAGENTA)&&colorIsBright(col, threshold)) {
                        farthestRight=seekThreshold(arr,i+x+y*width,threshold,FINALCOLOR,width,farthestRight);
                    }
                }
            }
        }
        return X>farthestRight?X:farthestRight;
    }
    void process(int[]arr,int width,int a,int b,int c,int d,int e,int f,int g,int h,int ii,int j,int k,int l) {
        final ColorRange TARGETCOLOR = new ColorRange(a,b,c,d,e,f);
        final ColorRange SEEKINGCOLOR = new ColorRange(g,h,ii,j,k,l);
        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;
            }
        }
    }
    boolean colorIsBright(Color col,int brightnessThreshold) {
        return col.getRed()+col.getBlue()+col.getGreen()>brightnessThreshold;
    }
    void processBrightness(int[]arr,int width,int threshold1,int threshold2) {
        final Color FINALCOLOR = Color.MAGENTA;
        for (int i=0;i<arr.length;i++) {
            Color col = new Color(arr[i],true);
            if (colorIsBright(col, threshold1)) {
                seekThreshold(arr,i,threshold2,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;
            }
        }
    }

    char[][] number_alternatives={
        /*0*/{'0','o','O','e'},
        /*1*/{'1','\\','/','I','i'},
        /*2*/{'2','己'},
        /*3*/{'3'},
        /*4*/{'4'},
        /*5*/{'5'},
        /*6*/{'6','b','G'},
        /*7*/{'7','z','Z'},
        /*8*/{'8','B'},
        /*9*/{'9','g','y',},
    };

    String convertToString(String[]data){
        return String.join("\n",data).replaceFirst(Pattern.quote("\n"),"");
    }

    double convertToDouble(String[]data){return convertToDouble("",data);}

    double convertToDouble(String prefix,String[] data) {
        int numb=0;
        int decimal=0;
        boolean decimalFound=false;
        for (int i=0;i<data.length;i++) {
            String s = data[i];
            int j=0;
            if (i==1) {
                j=prefix.length();
            } else {
                j=0;
            }
            //System.out.println("["+s+"]"+" starts at "+j);
            for (;j<s.length();j++) {
                if (s.charAt(j)=='.'||s.charAt(j)==',') {
                    decimalFound=true;
                }
                letter_iterator:
                for (int k=0;k<number_alternatives.length;k++) {
                    for (int l=0;l<number_alternatives[k].length;l++) {
                        if (s.charAt(j)==number_alternatives[k][l]) {
                            if (!decimalFound) {
                                numb*=10;
                                numb+=k;
                            } else {
                                decimal*=10;
                                decimal+=k;
                            }
                            //System.out.println("  "+s.charAt(j)+" found for "+k+".");
                            break letter_iterator;
                        }
                    }
                }
            }
        }
        return Double.parseDouble(Integer.toString(numb)+"."+Integer.toString(decimal));
    }

    int convertToInt(String[]data){return convertToInt("",data);}

    int convertToInt(String prefix,String[] data) {
        int numb=0;
        for (int i=0;i<data.length;i++) {
            String s = data[i];
            int j=0;
            if (i==1) {
                j=prefix.length();
            } else {
                j=0;
            }
            //System.out.println("["+s+"]"+" starts at "+j);
            for (;j<s.length();j++) {
                letter_iterator:
                for (int k=0;k<number_alternatives.length;k++) {
                    for (int l=0;l<number_alternatives[k].length;l++) {
                        if (s.charAt(j)==number_alternatives[k][l]) {
                            numb*=10;
                            numb+=k;
                            //System.out.println("  "+s.charAt(j)+" found for "+k+".");
                            break letter_iterator;
                        }
                    }
                }
            }
        }
        return numb;
    }
    @Override
    public String toString() {
        return "Reader [difficulty=" + difficulty + ", maxcombo=" + maxcombo + ", notes=" + Arrays.toString(notes)
                + ", other=" + other + ", pct=" + pct + ", rank=" + rank + ", score=" + score + ", title=" + title
                + "]";
    }
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + difficulty;
        result = prime * result + maxcombo;
        result = prime * result + Arrays.hashCode(notes);
        result = prime * result + Arrays.deepHashCode(number_alternatives);
        result = prime * result + ((other == null) ? 0 : other.hashCode());
        long temp;
        temp = Double.doubleToLongBits(pct);
        result = prime * result + (int) (temp ^ (temp >>> 32));
        result = prime * result + rank;
        result = prime * result + score;
        result = prime * result + ((title == null) ? 0 : title.hashCode());
        return result;
    }
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Reader other = (Reader) obj;
        if (difficulty != other.difficulty)
            return false;
        if (maxcombo != other.maxcombo)
            return false;
        if (!Arrays.equals(notes, other.notes))
            return false;
        if (this.other == null) {
            if (other.other != null)
                return false;
        } else 
        if (this.other.length()>0 && other.other.length()>0 && !this.other.equals(other.other))
            return false;
        if (Double.doubleToLongBits(pct) != Double.doubleToLongBits(other.pct))
            return false;
        if (rank != other.rank)
            return false;
        if (score != other.score)
            return false;
        return true;
    }
}