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

login_manager=LoginManager()
login_manager.session_protection ='strong'
login_manager.login_view='auth.login' 
db=SQLAlchemy()
bootstrap=Bootstrap()
mail=Mail()
photos=UploadSet('photos',IMAGES)


def create_app(config_name):
    app = Flask(__name__ )
    app.secret_key = os.urandom(24)


    
    app.config.from_object(config_options[config_name])
    
    bootstrap.init_app(app)
    db.init_app(app)
    login_manager.init_app(app)
    mail.init_app(app)

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

    return app

  
