import datetime
import hashlib
import uuid
import sys
import time
import os
import ctypes

#  _____ _                       _____                      _ _         
# /  ___(_)                     /  ___|                    (_) |        
# \ `--. _  ___ _ __ _ __ __ _  \ `--.  ___  ___ _   _ _ __ _| |_ _   _ 
#  `--. \ |/ _ \ '__| '__/ _` |  `--. \/ _ \/ __| | | | '__| | __| | | |
# /\__/ / |  __/ |  | | | (_| | /\__/ /  __/ (__| |_| | |  | | |_| |_| |
# \____/|_|\___|_|  |_|  \__,_| \____/ \___|\___|\__,_|_|  |_|\__|\__, |
#                                                                 __/ |
#                                             Verification V. A-2 |___/ 

# --- ENABLE ANSI COLORS ON WINDOWS ---
if os.name == 'nt':
    kernel32 = ctypes.windll.kernel32
    kernel32.SetConsoleMode(kernel32.GetStdHandle(-11), 7)

# --- CONFIGURATION (Sync with Generation Script) ---
BASE_SALT = "D9_fX92_kL0_pP_SECRET_INTERCEPTOR_TOKEN" 
TIMEFRAME_MINUTES = 15

def get_rolling_salt():
    """Generates a salt that changes every 24 hours (UTC)."""
    date_string = datetime.datetime.now(datetime.timezone.utc).strftime("%Y%m%d")
    return f"{BASE_SALT}:{date_string}"

def get_time_token():
    """Returns a time string rounded to the timeframe (UTC)."""
    now = datetime.datetime.now(datetime.timezone.utc)
    minutes = (now.minute // TIMEFRAME_MINUTES) * TIMEFRAME_MINUTES
    rounded = now.replace(minute=minutes, second=0, microsecond=0)
    return rounded.strftime("%Y-%m-%d %H:%M")

def generate_sierra_id(user_key: str):
    time_token = get_time_token()
    salt = get_rolling_salt()
    raw_payload = f"{salt}:{time_token}:{user_key}"
    hash_result = raw_payload.encode()
    for _ in range(50000):
        hash_result = hashlib.sha256(hash_result).digest()
    return str(uuid.uuid5(uuid.NAMESPACE_OID, hash_result.hex()))

def print_header(subtitle="Verification"):
    os.system('cls' if os.name == 'nt' else 'clear')
    print("\033[91m" + "="*80)
    print(r"""
 _____ _                       _____                      _ _         
/  ___(_)                     /  ___|                    (_) |        
\ `--. _  ___ _ __ _ __ __ _  \ `--.  ___  ___ _   _ _ __ _| |_ _   _ 
 `--. \ |/ _ \ '__| '__/ _` |  `--. \/ _ \/ __| | | | '__| | __| | | |
/\__/ / |  __/ |  | | | (_| | /\__/ /  __/ (__| |_| | |  | | |_| |_| |
\____/|_|\___|_|  |_|  \__,_| \____/ \___|\___|\__,_|_|  |_|\__|\__, |
                                                                 __/ |
                                                                |___/ 
    """ + f"--- {subtitle} V. A-2 ---".center(70))
    print("="*80 + "\033[0m")

def verify_access():
    print_header("Access Control")
    print(f" \033[90mGlobal Sync (UTC): {get_time_token()}\033[0m\n")
    chances = 3
    while chances > 0:
        print(f"\n[!] Attempts remaining: \033[93m{chances}\033[0m")
        user_key = input("  > Enter Secret Key: ").strip()
        provided_uuid = input("  > Enter Time-Locked UUID: ").strip()
        print("\n[*] \033[96mVerifying cryptographic integrity...\033[0m")
        correct_uuid = generate_sierra_id(user_key)
        time.sleep(1.5)
        if provided_uuid == correct_uuid:
            print("\n[+] \033[92mAccess Granted...\033[0m")
            return True
        else:
            chances -= 1
            print("\n[-] \033[91mInvalid Key/UUID combination.\033[0m")
    print("\n\033[41mCritical Failure: Access Denied.\033[0m")
    sys.exit(1)

if __name__ == "__main__":
    try:
        if verify_access():
            print("\n[✓] Handshake Verified. Initializing.")
    except KeyboardInterrupt:
        print("\n\033[91mProcess Terminated.\033[0m")
        sys.exit(1)