""" flask apps initialisation """
import logging
from logging.handlers import TimedRotatingFileHandler
from flask import Flask
from pony.flask import Pony
from ITPlanning.api import api
from ITPlanning.db import init_database
from ITPlanning.config import IniConfig
from ITPlanning.frontend import frontend

logger = logging.getLogger("ITPlanning")


def create_app():
    """Flask app creation"""
    app = Flask(__name__, static_folder="static", template_folder="view")
    config = IniConfig()
    app.config.from_object(config)

    # set logger
    logfile = app.config["LOG"]["log_file"]
    if logfile:
        handler = TimedRotatingFileHandler(logfile, when="midnight")
        handler.setFormatter(
            logging.Formatter("%(asctime)s [%(levelname)s] %(message)s")
        )
        logger.addHandler(handler)
    loglevel = app.config["LOG"]["log_level"]
    if loglevel:
        logger.setLevel(getattr(logging, loglevel.upper(), logging.NOTSET))

    # Initialize database
    init_database(app.config["BASE"]["database_uri"])
    Pony(app)

    # create flask blueprint
    app.register_blueprint(api, url_prefix="/api/v1")
    app.register_blueprint(frontend)

    return app