import json

MEMORY_FILE = "memory.json"

def load_memory():
    try:
        with open(MEMORY_FILE, "r", encoding="utf-8") as f:
            return json.load(f)
    except FileNotFoundError:
        return {}

def save_memory(memory):
    with open(MEMORY_FILE, "w", encoding="utf-8") as f:
        json.dump(memory, f, indent=4)

def update_memory(user_input, bot_response):
    memory = load_memory()
    memory[user_input] = bot_response
    save_memory(memory)

def check_memory(user_input):
    memory = load_memory()
    return memory.get(user_input, None)