__init__.py

"""
automatically invoked app factory
"""
import logging
import os

from flask import Flask
from flask_cors import CORS  # for debugging

from compendium_v2 import environment
from compendium_v2 import config


def create_app():
    """
    overrides default settings with those found
    in the file read from env var SETTINGS_FILENAME

    :return: a new flask app instance
    """

    assert 'SETTINGS_FILENAME' in os.environ
    with open(os.environ['SETTINGS_FILENAME']) as f:
        app_config = config.load(f)

    app = Flask(__name__)
    CORS(app)

    app.secret_key = 'super secret session key'
    app.config['CONFIG_PARAMS'] = app_config

    from compendium_v2.routes import default
    app.register_blueprint(default.routes, url_prefix='/')

    from compendium_v2.routes import api
    app.register_blueprint(api.routes, url_prefix='/api')

    from compendium_v2.routes import service_matrix
    app.register_blueprint(service_matrix.routes, url_prefix='/service-matrix')

    logging.info('Flask app initialized')

    environment.setup_logging()

    return app