import hashlib
from pathlib import Path

from dotenv import load_dotenv
from jinja2 import Environment, FileSystemLoader, select_autoescape

from config import (
    MENU_CRECHE_PDF_URL,
    SIGNAL_SENDER,
    SIGNAL_RECIPIENTS,
    SIGNAL_API_URL,
)
from logging_conf import get_logger
from menus import Menus, MenuMessageFormatter
from message_sender import SignalMessager
from pdf_downloader import download
from result_file import ResultFile

load_dotenv()

logger = get_logger(__name__)


templates_path = Path(__file__).parent
env = Environment(
    loader=FileSystemLoader(templates_path), autoescape=select_autoescape()
)
message_formatter = MenuMessageFormatter(env)

signal_messager = SignalMessager(SIGNAL_API_URL, SIGNAL_SENDER)


def main():
    logger.info(f"Téléchargement du menu à l'adresse {MENU_CRECHE_PDF_URL}...")
    menu_pdf_file = download(MENU_CRECHE_PDF_URL, file_name="menu.pdf")
    with open(menu_pdf_file, "rb") as pdf_file:
        sha256 = hashlib.file_digest(pdf_file, "sha256").hexdigest()

    try:
        menus = Menus(menu_pdf_file)
    except IndexError as err:
        logger.error(err)
        return

    result_file = ResultFile(Path.home() / ".cache" / "menu_creche.txt")
    if result_file.was_already_sent(sha256, menus):
        return
    is_update = result_file.is_update(sha256, menus)
    message = message_formatter.create_message(menus, is_update)

    logger.info(
        f"Envoi du message aux numéros {SIGNAL_RECIPIENTS} de la part de "
        f"{SIGNAL_SENDER} avec pour contenu:\n\n{message}"
    )
    signal_messager.send_message(message, menu_pdf_file, SIGNAL_RECIPIENTS)


if __name__ == "__main__":
    main()