package pl.wat.ms4ds.terenfunkcje;


import pl.wat.ms4ds.common.EGeoDirection;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class Square {

    /**
     * The height above the level of the sea. Unit of measure decimeter [m].
     */
    float elevation;

    /**
     * Terrain type. <p></p>Possible values:
     * 0 - BARE_GROUND
     * 1 - GRASS
     * 2 - SWAMP
     * 3 - WATER
     * 4 - SCRUB, BUSHES
     * 5 - BUILDINGS
     * 6 - FOREST
     */
    short terrainType;

    /**
     * Type of watercourse (water obstacle) in a given direction. Each index corresponds to a given direction.
     * <p></p>Possible values: 0 - no watercourse, 1 - drain, ditch, 2 - canal, stream, 3 - river
     */
    byte[] watercourses;

    /**
     * Type of road in a given direction. Each index corresponds to a given direction.
     * <p></p>Possible values: 0 - no road, 1 - small roads, 2 - minor roads, 3 - major roads
     */
    byte[] roads;

    ////////////////////////////////////////
    /// tymczasowo
    public float stopienZabudowy;
    public float stopienZalesienia;
    public float stopienZawodnienia;
    public float stopienZabagnienia;
    public boolean[] jestDroga;
    public boolean[] jestRow;
    public boolean[] jestPrzeszkodaWodna;
    public int roznicaWzniesien;
    public int wysokoscSrednia;
    ////////////////////////////////////////

    public static class RawData {
        /**
         * The height above the level of the sea. Unit of measure decimeter [dm].
         */
        short elevation;
        /**
         * Terrain type. <p></p>Possible values:
         * 0 - BARE_GROUND
         * 1 - GRASS
         * 2 - SWAMP
         * 3 - WATER
         * 4 - SCRUB, BUSHES
         * 5 - BUILDINGS
         * 6 - FOREST
         */
        byte terrainType;

        /**
         * Small road in a given direction. Each bit corresponds to a given direction.
         */
        byte smallRoads;

        /**
         * Minor road in a given direction. Each bit corresponds to a given direction.
         */
        byte minorRoads;

        /**
         * Major road in a given direction. Each bit corresponds to a given direction.
         */
        byte majorRoads;

        /**
         * The existence of a drain in a given direction. Each bit corresponds to a given direction.
         */
        byte drains;

        /**
         * The existence of a stream in a given direction. Each bit corresponds to a given direction.
         */
        byte streams;

        /**
         * The existence of a river in a given direction. Each bit corresponds to a given direction.
         */
        byte rivers;

        public void reset() {
            elevation = 0;
            terrainType = 0;
            smallRoads = 0;
            minorRoads = 0;
            majorRoads = 0;
            drains = 0;
            streams = 0;
            rivers = 0;
        }

        public void save(ObjectOutputStream out) throws IOException {
            out.writeShort(elevation);
            out.writeByte(terrainType);
            out.writeByte(smallRoads);
            out.writeByte(minorRoads);
            out.writeByte(majorRoads);
            out.writeByte(drains);
            out.writeByte(streams);
            out.writeByte(rivers);
        }

        public void load(ObjectInputStream in) throws IOException {
            elevation = in.readShort();
            terrainType = in.readByte();
            smallRoads = in.readByte();
            minorRoads = in.readByte();
            majorRoads = in.readByte();
            drains = in.readByte();
            streams = in.readByte();
            rivers = in.readByte();
        }

        public RawData(short elevation, byte terrainType) {
            this.elevation = elevation;
            this.terrainType = terrainType;
        }

        public RawData() {
        }

        public RawData(Square kw) {
            terrainType = (byte) kw.terrainType;
            // Konwersja na decymetry.
            elevation = (short) (kw.elevation * 10);
            byte bit = 1;
            for (int i = 0; i < kw.watercourses.length; i++) {
                switch (kw.watercourses[i]) {
                    case 1:
                        drains |= bit;
                        break;
                    case 2:
                        streams |= bit;
                        break;
                    case 3:
                        rivers |= bit;
                        break;
                    default:
                        break;
                }
                bit <<= 1;
            }
            bit = 1;
            for (int i = 0; i < kw.roads.length; i++) {
                switch (kw.roads[i]) {
                    case 1:
                        smallRoads |= bit;
                        break;
                    case 2:
                        minorRoads |= bit;
                        break;
                    case 3:
                        majorRoads |= bit;
                        break;
                    default:
                        break;
                }
                bit <<= 1;
            }
        }
    }

    public static final Square EMPTY = new Square(-1, -1);

    public Square() {
        this(-2, -2);
    }

    public Square(int x, int y) {
        this.x = x;
        this.y = y;
        roads = new byte[8];
        watercourses = new byte[8];
        // Brak danych o wysokości.
        elevation = -1000;
    }

    public Square(int x, int y, RawData rawData) {
        this(x, y);
        elevation = rawData.elevation / 10.f;
        terrainType = rawData.terrainType;
        int bit = 1;
        for (int i = 0; i < 8; i++) {
            int b1 = ((rawData.majorRoads & bit) > 0) ? 3 : 0;
            int b2 = ((rawData.minorRoads & bit) > 0) ? 2 : 0;
            int b3 = ((rawData.smallRoads & bit) > 0) ? 1 : 0;
            roads[i] = (byte) (b1 + b2 + b3);
            b1 = ((rawData.rivers & bit) > 0) ? 3 : 0;
            b2 = ((rawData.streams & bit) > 0) ? 2 : 0;
            b3 = ((rawData.drains & bit) > 0) ? 1 : 0;
            watercourses[i] = (byte) (b1 + b2 + b3);
            bit <<= 1;
        }
    }

    public final int x;
    public final int y;
    public double sumaWysokosci;
    public int count = 1;
    public double ell;
    public double nll;
    public double eur;
    public double nur;


    @Override
    public final boolean equals(Object o) {
        if (!(o instanceof Square SQUARE)) return false;

        return x == SQUARE.x && y == SQUARE.y;
    }

    @Override
    public int hashCode() {
        int result = 7;
        result = 31 * result + x;
        result = 31 * result + y;
        return result;
    }

    public String toString() {
        StringBuilder linia = new StringBuilder(100);
        linia.append("[");
        char c = switch (terrainType) {
            case 1 -> 'G';
            case 2 -> 'S';
            case 3 -> 'W';
            case 4 -> 'R';
            case 5 -> 'B';
            case 6 -> 'F';
            default -> ' ';
        };
        linia.append(c);
        linia.append(' ');
        String s = String.format("%5.1f", elevation);
        linia.append(s);
        linia.append(' ');
        for (byte road : roads) {
            c = switch (road) {
                case 1 -> '1';
                case 2 -> '2';
                case 3 -> '3';
                default -> '0';
            };
            linia.append(c);
        }
        linia.append(' ');
        for (byte watercours : watercourses) {
            c = switch (watercours) {
                case 1 -> '1';
                case 2 -> '2';
                case 3 -> '3';
                default -> '0';
            };
            linia.append(c);
        }
        linia.append(']');
        return linia.toString();
    }

}