import os
from flask import Flask, redirect, url_for, session, render_template, flash
from flask_script import Manager
from flask_bootstrap import Bootstrap
from flask_moment  import Moment
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager
from config import config
from werkzeug.routing import BaseConverter

class RegexConverter(BaseConverter):
    def __init__(self, url_map, *items):
        super(RegexConverter, self).__init__(url_map)
        self.regex = items[0]

manager = Manager()
bootstrap = Bootstrap()
moment = Moment()
db = SQLAlchemy()
login_manager = LoginManager()
login_manager.session_protection = 'strong'
login_manager.login_view = "auth.login"

def create_app(config_name):
	app = Flask(__name__)
	app.config.from_object(config[config_name])
	config[config_name].init_app(app)
	
	app.url_map.converters['regex'] = RegexConverter
	bootstrap.init_app(app)
	moment.init_app(app)
	db.init_app(app)
	login_manager.init_app(app)

	from . main import main as main_blueprint
	app.register_blueprint(main_blueprint)
	from . auth import auth as auth_blueprint
	app.register_blueprint(auth_blueprint, url_prefix='/auth')
	return app