import logging
from dotenv import load_dotenv
import os
from models import Items
from sqlalchemy import create_engine, func
from sqlalchemy.orm import sessionmaker
from urllib.parse import quote_plus

#Logging

logging.basicConfig(
    filename='app.log',  # Log to a file
    level=logging.DEBUG,  # Log everything (DEBUG and above)
    format='%(asctime)s %(levelname)s %(message)s'
)

logging.info('Application started')
try:
    logging.debug('Debug info here')
except Exception as e:
    logging.exception('An error occurred')

#using .env
load_dotenv()
db_name = os.getenv("DB_NAME")
db_psswd = os.getenv("DB_PASSWORD")
db_user = os.getenv("DB_USER")
db_port = os.getenv("DB_PORT") or "3306"
db_host = os.getenv("DB_HOST")
if db_host == None:
    logging.error("no hostname provided")
    os._exit(1)

engine = create_engine(f"mariadb+mariadbconnector://{db_user}:{quote_plus(db_psswd)}@{db_host}:{db_port}/{db_name}")
Session = sessionmaker(bind=engine)
session = Session()


def new_part(cloth_type, weight, pieces):
    existing = session.query(Items).filter_by(clothes=cloth_type).first()
    if existing:
        logging.debug("Item already inserted")
    else:
        if type(pieces) is not int:
            print("only ints allowed")
            logging.error("only ints allowed")
        else:
            new_item = Items(clothes=cloth_type, weight=weight, pieces=pieces)
            session.add(new_item)
            session.commit()
            logging.info("new Insert is in DB")

def update_weight(cloth_type, weight):
    item = session.query(Items).filter_by(clothes=cloth_type).first()
    item.weight = weight
    session.commit()
    logging.info("weight updated")

def update_pieces(cloth_type, pieces):
    if type(pieces) is not int:
        logging.error("only ints allowed")
    else: 
        item = session.query(Items).filter_by(clothes=cloth_type).first()
        item.pieces = pieces
        session.commit()
        logging.info("pieces updated")

def delete(cloth_type):
    logging.critical(f"{cloth_type} was deleted")
    session.query(Items).filter_by(clothes=cloth_type).delete()
    session.commit()


def fetch_clothes():
    logging.info("fetched clothes")
    return [row[0] for row in session.query(Items.clothes).all()]

def fetch_weight(cloth_type):
    logging.info("fetched weight")
    result = session.query(Items.weight).filter_by(clothes=cloth_type).first()
    return result[0] if result else None

def fetch_luggage_weight():
    logging.info("fetched whole weight")
    result = session.query(func.sum(Items.weight)).scalar()
    return result if result else None

def fetch_piece(cloth_type):
    logging.info("fetched pieces")
    result = session.query(Items.pieces).filter_by(clothes=cloth_type).first()
    return result[0] if result else None

def fetch_all_pieces():
    logging.info("fetched all pieces")
    result = session.query(Items.pieces).all()
    return [row[0] for row in session.query(Items.pieces).all()]

def check_clothe(clothe_type):
    exists = session.query(Items.clothes).filter_by(clothes=clothe_type).first() is not None
    return exists