import pygame
from display import Scaling

class FieldSprite(pygame.sprite.Sprite):
    def __init__(self, rect: pygame.Rect):
        super().__init__()
        self.rect = rect
        self.image = pygame.Surface(self.rect.size)
        self.image.fill("green")


class Field():
    def __init__(self, scaling: Scaling = None):
        self.scaling = scaling if scaling else Scaling(50,0,0)
        self.sprites = pygame.sprite.Group()
        self.updated = True
        self.areas = [(0,0,40_000,28_000)]
        
    def area_to_rect(self, area):
        x, y, w, h = area
        return pygame.Rect(
            x * self.scaling.scale + self.scaling.left,
            y * self.scaling.scale + self.scaling.top,
            w * self.scaling.scale,
            h * self.scaling.scale)
            
    def coordinates_inside_area(self, area, x, y):
        if x < area[0]:
            return False
        if y < area[1]:
            return False
        if x >= area[0]+area[2]:
            return False
        if y >= area[1]+area[3]:
            return False
        return True
            
    def slice(self, x: int, y: int, direction: bool, thickness: int):
        """ Slice one area into two areas """
        # Find the overlapping area
        for area in self.areas:
            if self.coordinates_inside_area(area, x, y):
                break
        else:
            return False
        self.areas.remove(area)
        return False

    def __update_sprites(self):
        self.sprites.empty()
        for area in self.areas:
            self.sprites.add(FieldSprite(self.area_to_rect(area)))
        
    def get_sprites(self):
        if self.updated:
            self.__update_sprites()
        return self.sprites
        
    def __del__(self):
        pass