app.py

import os
import logging
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager
from sqlalchemy.orm import DeclarativeBase

# Set up logging
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger(__name__)

class Base(DeclarativeBase):
    pass

db = SQLAlchemy(model_class=Base)
login_manager = LoginManager()

def create_app():
    app = Flask(__name__)

    # Configure app
    app.secret_key = os.environ.get("FLASK_SECRET_KEY") or "a secret key"
    app.config["SQLALCHEMY_DATABASE_URI"] = os.environ.get("DATABASE_URL")
    app.config["SQLALCHEMY_ENGINE_OPTIONS"] = {
        "pool_recycle": 300,
        "pool_pre_ping": True,
    }

    # Initialize extensions
    db.init_app(app)
    login_manager.init_app(app)
    login_manager.login_view = 'auth.login'

    # User loader callback
    @login_manager.user_loader
    def load_user(user_id):
        from models import User
        return User.query.get(int(user_id))

    with app.app_context():
        try:
            # Initialize database models
            import models  # noqa: F401
            db.create_all()
            logger.info("Database tables created successfully")

            # Register blueprints
            from routes import main_bp, auth_bp, campaign_bp, analytics_bp, profile_bp
            app.register_blueprint(main_bp)
            app.register_blueprint(auth_bp)
            app.register_blueprint(campaign_bp)
            app.register_blueprint(analytics_bp)
            app.register_blueprint(profile_bp)  # Added profile blueprint registration
            logger.info("Blueprints registered successfully")

        except Exception as e:
            logger.error(f"Error during app initialization: {str(e)}")
            raise

    return app