import os

from flask import Flask, render_template
from werkzeug.wsgi import SharedDataMiddleware


def create_app():
    app = Flask(__name__, instance_relative_config=True)
    app.config.from_mapping(
        SQLALCHEMY_DATABASE_URI=os.environ.get("DATABASE_URI"),
        SQLALCHEMY_TRACK_MODIFICATIONS=os.environ.get("TRACK_MODIFICATIONS"),
        SQLALCHEMY_POOL_RECYCLE=os.environ.get("POOL_RECYCLE"),
        USERNAME=os.environ.get("USERNAME"),
        PASSWORD=os.environ.get("PASSWORD"),
        SECRET_KEY=os.environ.get("SECRET_KEY"),
        UPLOAD_FOLDER=os.environ.get("UPLOAD_FOLDER")
    )

    app.wsgi_app = SharedDataMiddleware(
        app.wsgi_app, {'/uploads': app.config['UPLOAD_FOLDER']})

    from files.models import db
    db.init_app(app)

    from files import commands
    commands.init_app(app)

    from files import auth
    app.register_blueprint(auth.bp)

    from files import admin
    app.register_blueprint(admin.bp)

    from files import categories
    app.register_blueprint(categories.bp)

    from files import about
    app.register_blueprint(about.bp)
    app.add_url_rule('/about', endpoint='about')

    from files import files
    app.register_blueprint(files.bp)
    app.add_url_rule('/', endpoint='index')

    return app