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#
# Licensed under the Apache License, Version 2.0 (the "License");
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#     http://www.apache.org/licenses/LICENSE-2.0
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# Tencent Zhuque Lab (https://github.com/Tencent/AI-Infra-Guard) in its
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from deepteam.attacks import BaseAttack

class AtbashCipher(BaseAttack):
    def __init__(self, weight: int = 1):
        self.weight = weight

    def enhance(self, attack: str) -> str:
        """Encrypt/decrypt text using Atbash cipher"""
        result = []
        a = ord('a')
        z = ord('z')
        A = ord('A')
        Z = ord('Z')
        
        for c in attack:
            code = ord(c)
            if A <= code <= Z:
                # Uppercase letters
                result.append(chr(Z - (code - A)))
            elif a <= code <= z:
                # Lowercase letters
                result.append(chr(z - (code - a)))
            else:
                # Non-alphabetic characters
                result.append(c)
        return ''.join(result)