import os
from flask import Flask
from flask_cors import CORS
from src.api.routes import api_bp
from flask_sse import sse
from config import config


def create_app():
    app = Flask(__name__)

    origins = [
        "http://localhost:3000",
        "http://127.0.0.1:3000"
    ]
    CORS(app, supports_credentials=True, origins=origins)

    app.config.update(
        SESSION_COOKIE_SAMESITE="None",   # necessary for cross-site cookies
        SESSION_COOKIE_SECURE=False       # True in prod (HTTPS)
    )

    env = os.environ.get('FLASK_ENV', 'default')
    app.config.from_object(config[env])

    app.register_blueprint(sse, url_prefix='/stream')
    app.register_blueprint(api_bp, url_prefix='/api')

    return app


if __name__ == "__main__":
    port = int(os.environ.get("PORT", 5000))

    app = create_app()
    app.run(host='0.0.0.0', port=port, debug=True)