from abc import ABC, abstractmethod

from maze import Maze
from cell import Cell


class Observer(ABC):

    @abstractmethod
    def update(self, event: str):

        pass


class ConsoleView(Observer):

    def update(self, event: str):

        print(f"[EVENT]: {event}")

    def render(
        self,
        maze: Maze,
        path: list[Cell] = None,
        current: Cell = None
    ):

        path = path or []

        path_set = set(path)

        for row in maze.cells:

            line = ""

            for cell in row:

                if current and cell == current:
                    line += "P"

                elif cell.is_start:
                    line += "S"

                elif cell.is_exit:
                    line += "E"

                elif cell.is_wall:
                    line += "#"

                elif cell in path_set:
                    line += "."

                else:
                    line += " "

            print(line)