AsfourSourceCode.py

"""Hyper Sudoku AI Solver — original CLI entry point.

This file preserves the original command-line interface. The solving logic now
lives in the `solver/` package, which provides a cleaner, faster, and tested
implementation along with the Flask-based visual demo (`app.py`).

Usage:
    python AsfourSourceCode.py
"""
from __future__ import annotations

import os
import sys

from solver import HyperSudokuBoard, HyperSudokuSolver


def main() -> int:
    fil = input("Which file do you want to analyze? ").strip()
    in_path = f"input{fil}.txt"
    out_path = f"output{fil}.txt"

    if not os.path.exists(in_path):
        print(f"Error: {in_path} not found.", file=sys.stderr)
        return 1

    with open(in_path) as f:
        text = f.read()

    board = HyperSudokuBoard.from_text(text)

    print("Initial board:")
    print(board)
    print()

    result = HyperSudokuSolver(board, record_steps=False).solve()

    if not result.stats.solved:
        print("No solution found.")
        return 2

    print("Solved board:")
    print(result.board)
    print()
    print(
        f"Stats — assignments: {result.stats.assignments}, "
        f"backtracks: {result.stats.backtracks}, "
        f"time: {result.stats.elapsed_ms:.1f} ms"
    )

    with open(out_path, "w") as f:
        for row in result.board.grid:
            f.write(" ".join(str(v) for v in row) + "\n")
    print(f"Wrote solution to {out_path}")
    return 0


if __name__ == "__main__":
    sys.exit(main())