package ruscz.game.gameOfProd.Image;

import ruscz.game.gameOfProd.Windows.WindowOfFreeMove;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Scanner;

public class ImageCell {
    private static BufferedImage image;
    private LinkedList<BufferedImage> imagesOfTiles;
    private HashMap<String, Integer> cellMap;
    private ImageDoor imageDoor;
    private LinkedList<BufferedImage> imagesOfItems;
    private int[][] mapBackground;
    private int[][] mapForeground;

    public void readMapFile(String name) {
        try {
            mapBackground = new int[WindowOfFreeMove.CANVAS_WIDTH][WindowOfFreeMove.CANVAS_HEIGHT];
            mapForeground = new int[WindowOfFreeMove.CANVAS_WIDTH][WindowOfFreeMove.CANVAS_HEIGHT];
            File mapFile = new File("src/main/resources/maps/" + name + "-tileset.txt");
            Scanner scanner = new Scanner(mapFile);
            int j = 0;
            while (scanner.hasNextLine()) {
                String data = scanner.nextLine();
                if (data.contains("<tileset>")) {
                    String[] mapInfo = data.split(" ");
                    imageTileset(mapInfo);
                }
                else if (data.contains("<items>")) {
                    String[] mapInfo = data.split(" ");
                    imageItem(mapInfo);
                }
                else {
                    String[] mapColumn = data.split(" ");
                    for (int i = 0; i < mapColumn.length; i++) {
                        mapBackground[i][j] = Integer.parseInt(mapColumn[i]);
                    }
                    j++;
                }
            }
            loadCellMap(name);
            imageObjectset(name);
        } catch (FileNotFoundException e) {
            System.out.println("An error occurred.");
            e.printStackTrace();
        }
    }

    private void imageTileset(String[] mapInfo) {
        try {
            image = ImageIO.read(new File("src/main/resources/" + mapInfo[1]));
        } catch (IOException e) {
            e.printStackTrace();
        }

        int width = Integer.parseInt(mapInfo[2]);
        int height = Integer.parseInt(mapInfo[3]);
        int tileSize = Integer.parseInt(mapInfo[4]);

        int Xtiles = width / tileSize;
        int Ytiles = height / tileSize;
        int tiles = Xtiles * Ytiles;

        if (imagesOfTiles == null)
            imagesOfTiles = new LinkedList<BufferedImage>();

        Rectangle[] rectangles = new Rectangle[tiles];
        int count = 0;
        for (int i = 0; i < rectangles.length / Ytiles; i++) {
            for (int j = 0; j < rectangles.length / Xtiles; j++) {
                rectangles[count] = new Rectangle(tileSize * i, tileSize * j, tileSize, tileSize);
                count++;
            }
        }

        for (int i = 0; i < tiles; i++) {
            imagesOfTiles.add(image.getSubimage(rectangles[i].x, rectangles[i].y, rectangles[i].height, rectangles[i].width));
        }
    }

    public void imageObjectset(String file) {
        try {
            File objectFile = new File("src/main/resources/maps/" + file + "-objectset.txt");
            Scanner scanner = new Scanner(objectFile);
            int j = 0;
            while (scanner.hasNextLine()) {
                String[] objects = scanner.nextLine().split(" ");
                for (int i = 0; i < objects.length; i++) {
                    mapForeground[i][j] = Integer.parseInt(objects[i]);
                }
                j++;
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    public void loadCellMap(String file) {
        try {
            File mapFile = new File("src/main/resources/maps/" + file + "-cellmap.txt");
            Scanner scanner = new Scanner(mapFile);
            cellMap = new HashMap<String, Integer>();
            while (scanner.hasNextLine()) {
                String data = scanner.nextLine();
                String[] cellInfo = data.split(" ");
                if (cellInfo[0].equals("DOOR")) {
                    Rectangle[] rec = new Rectangle[12];
                    int CELL_SIZE = WindowOfFreeMove.CELL_SIZE;
                    int count = 0;
                    for (int i = 0; i < rec.length / 4; i++) {
                        for (int j = 0; j < rec.length / 3; j++) {
                            rec[count] = new Rectangle(CELL_SIZE * i, CELL_SIZE * j, CELL_SIZE, CELL_SIZE);
                            count++;
                        }
                    }
                    imageDoor = new ImageDoor(cellInfo[1], rec);
                }
                else
                    cellMap.put(cellInfo[0], Integer.parseInt(cellInfo[1]));
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    public void imageItem(String[] itemInfo) {
        int imageWidth = 0;
        int imageHeight = 0;
        int size = 0;
        try {
            image = ImageIO.read(new File("src/main/resources/items/" + itemInfo[1]));
            imageWidth = Integer.parseInt(itemInfo[2]);
            imageHeight = Integer.parseInt(itemInfo[3]);
            size = Integer.parseInt(itemInfo[4]);
        } catch (IOException e) {
            e.printStackTrace();
        }

        int Xtiles = imageWidth / size;
        int Ytiles = imageHeight / size;
        int tiles = Xtiles * Ytiles;

        if (imagesOfItems == null)
            imagesOfItems = new LinkedList<BufferedImage>();

        for (int i = 0; i < Xtiles; i++) {
            for (int j = 0; j < Ytiles; j++) {
                BufferedImage img = image.getSubimage(size * i, size * j, size, size);
                imagesOfItems.add(img);
            }
        }
    }

    public LinkedList<BufferedImage> getImagesOfItems() {
        return imagesOfItems;
    }

    public int getImageFromCellMap(String cell) {
        return cellMap.get(cell);
    }

    public LinkedList<BufferedImage> getImagesOfTiles() {
        return imagesOfTiles;
    }

    public ImageDoor getImageDoor() { return imageDoor; }

    public void paintBackground(Graphics g, int x, int y) {
        g.drawImage(imagesOfTiles.get(mapBackground[x][y]), x * WindowOfFreeMove.CELL_SIZE,
                y * WindowOfFreeMove.CELL_SIZE, WindowOfFreeMove.CELL_SIZE, WindowOfFreeMove.CELL_SIZE, null);
    }

    public void paintForeground(Graphics g, int x, int y) {
        int imageNum = mapForeground[x][y];
        if (imageNum > 0)
            g.drawImage(imagesOfTiles.get(imageNum), x * WindowOfFreeMove.CELL_SIZE,
                    y * WindowOfFreeMove.CELL_SIZE, WindowOfFreeMove.CELL_SIZE, WindowOfFreeMove.CELL_SIZE, null);
    }
}