import re
 
PII_PATTERNS = [
    (r'\b\d{11}\b', '[TCKN]'),                          # TCKN
    (r'\b\d{4}[- ]?\d{4}[- ]?\d{4}[- ]?\d{4}\b', '[CARD]'),  # Kart
    (r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b', '[EMAIL]'),
    (r'\b(05|5)\d{9}\b', '[PHONE]'),                    # TR cep
    (r'\bTR\d{2}[\d ]{20,30}\b', '[IBAN]'),
]
 
def redact_pii(text: str) -> str:
    """PII'yi placeholder ile değiştir."""
    for pattern, replacement in PII_PATTERNS:
        text = re.sub(pattern, replacement, text)
    return text
 
# Önce redact, sonra LLM'e gönder
clean_query = redact_pii(user_query)
response = client.messages.create(
    messages=[{"role": "user", "content": clean_query}]
)

def has_pii(text: str) -> bool:
    for pattern, _ in PII_PATTERNS:
        if re.search(pattern, text):
            return True
    return False
 
def make_request(user_query):
    if has_pii(user_query):
        # PII içerir → cache YAPMA (system prompt'a cache_control koyma)
        return client.messages.create(
            system=SYSTEM,  # plain string, cache yok
            messages=[{"role": "user", "content": user_query}],
        )
    else:
        # Normal cache'li request
        return client.messages.create(
            system=[{"text": SYSTEM, "cache_control": {"type": "ephemeral"}}],
            messages=[{"role": "user", "content": user_query}],
        )