import json
import os
from typing import List, Dict
from venv import logger
from config.settings import BG_DATA_PATH, PRODUCTS_PATH, EXCLUDED_BEER_IDS
from logging import getLogger

logger = getLogger(__name__)

def load_bg_data() -> List[Dict[str, str]]:
    """Load background data for AI assistant"""
    try:
        with open(BG_DATA_PATH, 'r', encoding='utf-8') as f:
            return json.load(f)
    except FileNotFoundError:
        logger.error(f"Data file not found at {BG_DATA_PATH}. Serving with empty data.")
        return []
    except json.JSONDecodeError:
        logger.error(f"Could not decode JSON from {BG_DATA_PATH}. Serving with empty data.")
        return []


def load_products() -> List[Dict[str, str]]:
    """Load products data excluding beer IDs"""
    try:
        with open(PRODUCTS_PATH, 'r', encoding='utf-8') as f:
            products = json.load(f)
            return list(filter(lambda product: product['id'] not in EXCLUDED_BEER_IDS, products))
    except FileNotFoundError:
        logger.error(f"Data file not found at {PRODUCTS_PATH}. Serving with empty data.")
        return []
    except json.JSONDecodeError:
        logger.error(f"Could not decode JSON from {PRODUCTS_PATH}. Serving with empty data.")
        return []


def load_users() -> List[Dict[str, str]]:
    """Load users data"""
    try:
        with open('users.json', 'r') as f:
            return json.load(f)
    except FileNotFoundError:
        logger.error("ERROR: users.json file not found.")
        return []
    except json.JSONDecodeError:
        logger.error("ERROR: Could not decode JSON from users.json.")
        return []


# Load data at module level
bg_data_loaded = load_bg_data()
all_products = load_products()