backend/app.py

from flask import Flask, send_from_directory
import os
import logging

logger = logging.getLogger(__name__)
if not logger.hasHandlers():
    handler = logging.StreamHandler()
    handler.setFormatter(logging.Formatter("%(levelname)s:%(name)s:%(message)s"))
    logger.addHandler(handler)

logger.setLevel(logging.INFO)

app = Flask(__name__, static_folder="../frontend/dist", static_url_path="")


@app.route("/")
def index():
    return send_from_directory(app.static_folder, "index.html")


@app.route("/data/<path:filename>")
def data_files(filename):
    """
    Serve any csv or JSON file from the data directory.
    """
    data_dir = os.path.join(os.path.dirname(__file__), "data")
    file_path = os.path.join(data_dir, filename)
    if os.path.isfile(file_path):
        return send_from_directory(data_dir, filename)

    return "File not found", 404


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=7860, debug=True, use_reloader=True)