import secrets
import json
import os

API_KEYS_FILE = 'api_keys.json'

def generate_api_key():
    """Generate a secure random API key."""
    return secrets.token_hex(32)

def save_api_key(user_id, api_key):
    """Save the API key associated with a user."""
    if os.path.exists(API_KEYS_FILE):
        with open(API_KEYS_FILE, 'r') as f:
            api_keys = json.load(f)
    else:
        api_keys = {}

    api_keys[user_id] = api_key

    with open(API_KEYS_FILE, 'w') as f:
        json.dump(api_keys, f)

def generate_and_save_api_keys(num_keys=15):
    """Generate and save a specified number of API keys."""
    for i in range(1, num_keys + 1):
        user_id = f"user_{i}"
        api_key = generate_api_key()
        save_api_key(user_id, api_key)
        print(f"API Key for {user_id}: {api_key}")

if __name__ == "__main__":
    generate_and_save_api_keys(15)