__init__.py

# app/__init__.py

# local imports
from __future__ import print_function
import vars
import messages
# third-party imports
import uuid
from flask import Flask, redirect, url_for, request, render_template, flash, session, send_from_directory
from flask_cors import CORS
from flask_bootstrap import Bootstrap
import random
import os
import json
import sys
import re

sys.path.append(vars.rabbitmq_agents_loc)
import rc_util

def create_app(config_name):
    app = Flask(__name__, static_folder='static') # initialization of the flask app
    cors = CORS(app, resources={r"/*": {"origins": vars.cors_allowed_origins}})
    Bootstrap(app) # allowing app to use bootstrap

    def get_authorized_user():

        user = {
            "username": re.search("([^!]+?)(@uab\.edu)?$", request.headers.get("Persistent-Id")).group(1),
            "fullname": f'{request.headers.get("Givenname")} {request.headers.get("Sn")}',
            "email": request.headers.get("Mail"),
            "eppa": request.headers.get("Unscoped-Affiliation"),
        }

        return user

    @app.route('/', methods=['GET', 'POST']) # initial route to display the reg page
    def index():

        valid_eppa = vars.valid_eppa 

        if 'uid' not in session:
            session['uid']=str(uuid.uuid4())

        if 'user' not in session:
            session["user"] = get_authorized_user()

        session['return_url'] = request.args.get('redir', vars.default_referrer)

        if (not any(item in session['user'].get('eppa') for item in valid_eppa)):
            return render_template('account/unauthorized.html', unauthorized_msg=messages.unauthorized_message)

        if rc_util.check_state(session['user'].get('username')) == "hold":
            return render_template('account/hold.html', account_hold_msg=messages.account_hold_message)

        elif rc_util.check_state(session['user'].get('username')) == "certification":
              return render_template('account/certify.html', room_id=session['uid'],
                               username=session['user'].get('username'),
                               fullname=session['user'].get('fullname'), email=session['user'].get('email'),
                               referrer=session['return_url'], cancel_url=vars.default_referrer,
                               cancel_msg=messages.cancel_message,
                               pre_certification_msg=messages.pre_certification_message,
                               certification_msg=messages.certification_message)

        elif rc_util.check_state(session['user'].get('username')) == "ok":
            return render_template('account/good_standing.html', good_standing_msg= messages.good_standing_message)

        else:
            return render_template('auth/SignUp.html', room_id=session['uid'],
                               username=session['user'].get('username'),
                               fullname=session['user'].get('fullname'), email=session['user'].get('email'),
                               referrer=session['return_url'], cancel_url=vars.default_referrer,
                               welcome_msg=messages.welcome_message,
                               cancel_msg=messages.cancel_message,
                               error_msg=messages.error_message)

    # misc page error catching
    @app.errorhandler(403)
    def forbidden(error):
        return render_template('errors/403.html', title='Forbidden'), 403

    @app.errorhandler(404)
    def page_not_found(error):
        return render_template('errors/404.html', title='Page Not Found'), 404

    @app.errorhandler(500)
    def internal_server_error(error):
        return render_template('errors/500.html', title='Server Error'), 500

    return app