from typing import Optional

from pygame import Surface

from physics.PhysicsElementsHandler import PhysicsElementsHandler
from physics.TickData import TickData
from sprite.PositionScale import PositionScale
from sprite.Sprite import Sprite
from ui_elements.UiElement import UiElement


class DrawLayers:
    BACKGROUND = 'background'
    LEVEL = 'level'
    OBJECTS = 'objects'
    PLAYER = 'player'
    UI = 'ui'

    DRAW_ORDER = [BACKGROUND, LEVEL, OBJECTS, PLAYER, UI]


class SpriteManager:
    def __init__(self):
        self.physics_handler = PhysicsElementsHandler()
        self.physics_handler.add_collision_callback(self.collision_detected)

        self.layers: dict[str, list[UiElement]] = {}
        for layer in DrawLayers.DRAW_ORDER:
            self.layers[layer] = []

    def add_ui_element(self, layer: str, sprite: UiElement):
        self.layers[layer].append(sprite)

    def remove_ui_element(self, sprite: UiElement):
        for layer in self.layers:
            if sprite in self.layers[layer]:
                self.layers[layer].remove(sprite)

    def tick(self, tick_data: TickData):
        self.physics_handler.tick(tick_data, self.layers)

    def draw(self, screen: Surface, screen_transform: PositionScale):
        for layer in DrawLayers.DRAW_ORDER:
            for sprite in self.layers[layer]:
                sprite.draw(screen, screen_transform)

    def find_elements_at_position(self, position: tuple[float, float]) -> list[UiElement]:
        elements = []

        for layer in DrawLayers.DRAW_ORDER:
            for sprite in self.layers[layer]:
                bounding_box = sprite.get_bounding_box()
                if bounding_box is not None and bounding_box.contains_point(position):
                    elements.append(sprite)

        return elements

    def collision_detected(self, sprite_a: Sprite, sprite_b: Sprite):
        pass

    def find_sprite_by_uuid(self, uuid: str) -> Optional[UiElement]:
        for layer in DrawLayers.DRAW_ORDER:
            for sprite in self.layers[layer]:
                if sprite.uuid == uuid:
                    return sprite
        return None