AI প্রোডাক্টে ডার্ক প্যাটার্ন এড়ানো

import re

def detect_false_urgency(text):
    text_l = text.lower()
    urgency_words = ["only", "hurry", "limited time", "act now", "ends soon", "before time runs out"]
    has_urgency_word = any(w in text_l for w in urgency_words)
    has_number = bool(re.search(r"\d", text))
    return has_urgency_word and has_number

def detect_confirm_shaming(text):
    text_l = text.lower()
    shame_patterns = [
        "no thanks, i don't want",
        "no, i'd rather pay full price",
        "no, i don't care about",
    ]
    return any(p in text_l for p in shame_patterns)

def detect_hidden_cost(text):
    text_l = text.lower()
    has_free_claim = "free" in text_l
    hidden_fee_phrases = [
        "processing fee applies",
        "service charge applies",
        "additional charges apply",
    ]
    has_hidden_fee = any(p in text_l for p in hidden_fee_phrases)
    return has_free_claim and has_hidden_fee

def scan(text):
    return {
        "false_urgency": detect_false_urgency(text),
        "confirm_shaming": detect_confirm_shaming(text),
        "hidden_cost": detect_hidden_cost(text),
    }

samples = [
    "Only 2 seats left at this price! Offer ends in 4 minutes -- act now.",
    "No thanks, I don't want to save 20% on my order.",
    "This item is completely free to download! *Processing fee applies at checkout.",
    "You can cancel your subscription anytime from the account settings page.",
    "Hurry! Only 3 free spots left today, act now before time runs out. "
    "[No thanks, I don't want to save time and money.]",
]

for i, text in enumerate(samples, start=1):
    result = scan(text)
    flags = [name for name, hit in result.items() if hit]
    verdict = ", ".join(flags) if flags else "কোনো প্যাটার্ন শনাক্ত হয়নি (clean)"
    print(f"স্যাম্পল {i}: {text}")
    print(f"  -> {verdict}")

total_flagged = sum(1 for text in samples if any(scan(text).values()))
print()
print(f"মোট {len(samples)}টি স্যাম্পলের মধ্যে {total_flagged}টিতে অন্তত একটি ডার্ক-প্যাটার্ন সিগন্যাল পাওয়া গেছে।")