from builders import TextFileMazeBuilder
from strategies import BFSStrategy, DFSStrategy, AStarStrategy
from solver import MazeSolver
from observer_command import ConsoleView, Player, MoveCommand
import os
import sys

def clear_screen():
    os.system('cls' if os.name == 'nt' else 'clear')

script_dir = os.path.dirname(os.path.abspath(__file__))
builder = TextFileMazeBuilder()

print("Выбери лабиринт:")
print("1 - small_maze.txt")
print("2 - medium_maze.txt")
print("3 - big_maze.txt")
print("4 - no_exit_maze.txt")
print("5 - no_wall_maze.txt")
print("0 - выход")

choice_maze = input("> ")

if choice_maze == "0":
    sys.exit()
elif choice_maze == "1":
    filename = "small_maze.txt"
elif choice_maze == "2":
    filename = "medium_maze.txt"
elif choice_maze == "3":
    filename = "big_maze.txt"
elif choice_maze == "4":
    filename = "no_exit_maze.txt"
elif choice_maze == "5":
    filename = "no_wall_maze.txt"
else:
    print("Неверный выбор")
    sys.exit()

file_path = os.path.join(script_dir, filename)
maze = builder.buildFromFile(file_path)

clear_screen()
print("Лабиринт:")
maze.printMaze()

print("\nВыбери алгоритм:")
print("1 - BFS")
print("2 - DFS")
print("3 - A*")
print("0 - выход")

choice = input("> ")

if choice == "0":
    sys.exit()
elif choice == "1":
    strategy = BFSStrategy()
elif choice == "2":
    strategy = DFSStrategy()
elif choice == "3":
    strategy = AStarStrategy()
else:
    print("Неверный выбор")
    sys.exit()

clear_screen()
solver = MazeSolver(maze, strategy)
view = ConsoleView()
solver.addObserver(view)
stats = solver.solve()

print("Результат:")
print(stats)

path, _ = strategy.findPath(maze, maze.start, maze.exit)

if not path:
    print("\nПуть не найден")
    sys.exit()

print(f"\nНайден путь, длина: {len(path)} шагов")

print("\nКак пройти лабиринт?")
print("1 - пошагово")
print("2 - скипнуть путь")
print("0 - выход")

mode = input("> ")

if mode == "0":
    sys.exit()
elif mode == "2":
    clear_screen()
    print("Весь путь:")
    player = Player(maze.start)
    view.render(maze, player, path)
    print(f"\nДлина пути: {len(path)} шагов")
    sys.exit()

print("\nИдём пошагово, Enter - следующий шаг, 0 - скип")
player = Player(maze.start)
passed_path = [maze.start]
view.render(maze, player, passed_path)

for i, cell in enumerate(path[1:], 1):
    print(f"\nШаг {i}/{len(path)-1}")
    user_input = input("> ")
    
    if user_input == "0":
        clear_screen()
        print("Пропускаем...")
        for remaining_cell in path[i:]:
            cmd = MoveCommand(player, remaining_cell)
            cmd.execute()
            passed_path.append(remaining_cell)
        clear_screen()
        view.render(maze, player, path)
        print(f"\nДлина пути: {len(path)} шагов")
        sys.exit()
    
    cmd = MoveCommand(player, cell)
    cmd.execute()
    passed_path.append(cell)
    clear_screen()
    view.render(maze, player, passed_path)

print("\nГотово!")