from flask import Flask
from config import config_options
from flask_bootstrap import Bootstrap
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager
from flask_uploads import UploadSet, configure_uploads, IMAGES
from flask_mail import Mail


login_manager = LoginManager()
login_manager.session_protection = 'strong'
login_manager.login_view = 'auth.login'

bootstrap=Bootstrap()
db=SQLAlchemy()

photos = UploadSet('photos', IMAGES) 
mail = Mail()


def create_app(config_name):
  app = Flask(__name__)

  #application configurations
  app.config.from_object(config_options[config_name])

  #initialize flask extensions
  bootstrap.init_app(app)
  db.init_app(app)
  login_manager.init_app(app)
  mail.init_app(app)
  
  # configure UploadSet
  configure_uploads(app,photos)


  #register blueprints
  from.main import main as main_blueprint
  app.register_blueprint(main_blueprint)

  from.auth import auth as auth_blueprint
  app.register_blueprint(auth_blueprint,urlprefix='/auth')

  # setting config
  from .requests import configure_request
  configure_request(app)

  return app
