import os
from pathlib import Path
import logging
import requests
from dotenv import load_dotenv
from twilio.rest import Client

load_dotenv(verbose=True)

config = {
    'api_url': 'https://www.boden.co.uk/api/stock/v1/styles?market=UK&language=en-gb&id=y1357',
    'item_id': '40263442',  # 40263447 low stock, 40263442 12-18m
    'message_sent_file': './sent.txt',
    'msg_to': '+447557447469',
    'website_url': 'https://www.boden.co.uk/en-gb/rainbow-3-in-1-printed-jacket/sty-y1357',
    'log_level': logging.WARN
}


def get_logger(log_level=logging.WARN):
    """Creates, configures and returns a logger that outputs to console with supplied log_level
    """
    log = logging.getLogger(__name__)
    log.setLevel(log_level)
    log_handler = logging.StreamHandler()
    log_handler.setFormatter(logging.Formatter(
        '[%(filename)s:(%(lineno)d)] %(levelname)s >>  %(message)s'))
    log.addHandler(log_handler)

    return log


def get_json_from_url(url: str) -> dict:
    req = requests.get(url)
    return req.json()


def send_sms(target: str, msg: str):
    account_sid = os.environ['TWILIO_ACCOUNT_SID']
    auth_token = os.environ['TWILIO_AUTH_TOKEN']
    messaging_sid = os.environ['TWILIO_MESSAGE_SID']

    client = Client(account_sid, auth_token)

    message = client.messages.create(
        messaging_service_sid=messaging_sid,
        body=msg,
        to=target
    )

    log = logging.getLogger(__name__)
    log.debug(message.sid)


def does_file_exist(lock_file: str) -> bool:
    """Checks for presence of lockfile

    Args:
        lock_file (str): path to lockfile

    Returns:
        (bool): True if file exists
    """
    return os.path.isfile(lock_file)


def create_file(lock_file):
    Path(lock_file).touch()


def main(config, log):
    # This script runs once, to avoid spamming SMS every time run
    if does_file_exist(config['message_sent_file']):
        log.info(
            f'Already had positive result, remove {config["message_sent_file"]} to allow script to run again')
        return

    json = get_json_from_url(config['api_url'])

    for id in json['Y1357']:
        if id['edp'] == config['item_id']:
            if id['stockStatus'] == 'OutOfStock':
                log.info("Item is out of stock")
            else:
                log.info("Item is in stock")
                send_sms(
                    config['msg_to'], 'The coat is in stock at ' + config['website_url'])

                # Prevents it being run again
                create_file(config['message_sent_file'])


if __name__ == '__main__':
    log = get_logger(config['log_level'])
    main(config, log)