app.py

from flask import Flask
from flask_sqlalchemy import SQLAlchemy

from config import Config, make_celery

db = SQLAlchemy()

app = Flask(__name__)
app.config.from_object(Config)  # Set Flask app configuration from Config class
db = SQLAlchemy(app)
celery = make_celery(app)

from models import File

# Initialize the database
with app.app_context():
    db.create_all()

from routes import index, normal_upload, async_upload, celery_upload

app.add_url_rule("/", "index", index, methods=["GET"])
app.add_url_rule("/normal_upload", "normal_upload", normal_upload, methods=["POST"])
app.add_url_rule("/async_upload", "async_upload", async_upload, methods=["POST"])
app.add_url_rule("/celery_upload", "celery_upload", celery_upload, methods=["POST"])

# Used if you want to play with databse through flask shell
@app.shell_context_processor
def make_shell_context():
    return {"db": db, "File": File}