import os
import connexion
from flask_sqlalchemy import SQLAlchemy
from flask_marshmallow import Marshmallow

basedir = os.path.abspath(os.path.dirname(__file__))

# Creates the Connexion application instance
connex_app = connexion.App(__name__, specification_dir=basedir)

# Gets the underlying Flask app instance
app = connex_app.app
database_uri = "sqlite:////" + os.path.join(basedir, "readings.db")

# Configures the SQLAlchemy part of the app instance
app.config["SQLALCHEMY_ECHO"] = True # Set to false in prod.
app.config["SQLALCHEMY_DATABASE_URI"] = database_uri
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False

# Creates the SQLAlchemy db instance
db = SQLAlchemy(app)

# Initialises Marshmallow
ma = Marshmallow(app)