app.py

import os
from flask import Flask, send_from_directory

# Initialize Flask, pointing it to the Vite output directory
app = Flask(__name__, static_folder='dist')

@app.route('/health')
def health_check():
    """Hugging Face readiness probe endpoint."""
    return {"status": "healthy", "version": "15.0.0"}, 200

@app.route('/', defaults={'path': ''})
@app.route('/<path:path>')
def serve(path):
    """
    Serve static files. If a file is not found (e.g., during client-side routing),
    fallback to index.html to allow React Router to handle the view.
    """
    static_path = os.path.join(app.static_folder, path)
    
    if path != "" and os.path.exists(static_path):
        return send_from_directory(app.static_folder, path)
    else:
        index_path = os.path.join(app.static_folder, 'index.html')
        if os.path.exists(index_path):
            return send_from_directory(app.static_folder, 'index.html')
        else:
            return f"Abyssinia v15 Error: Build artifacts not found in {app.static_folder}. Check Docker build stage.", 404

if __name__ == "__main__":
    # Local testing fallback; Hugging Face will invoke via Gunicorn instead
    app.run(host='0.0.0.0', port=7860)