Add initial backend implementation and project configuration files

main.bk

@@ -0,0 +1,50 @@
+from flask import Flask, request, jsonify
+from flask_cors import CORS
+
+app = Flask(__name__, static_folder="../front-end/dist/assets", template_folder="../front-end/dist")
+CORS(app)
+
+@app.route('/')
+def index():
+    return app.send_static_file('index.html')
+
+# Essential for handling client-side routing (e.g., Vue Router history mode)
+@app.route('/<path:path>')
+def static_files(path):
+    return app.send_static_file(path)
+
+@app.route('/api/set', methods=['POST'])
+def handle_json_data():
+    data = request.get_json()
+
+    if not data:
+        return jsonify({'error': 'Missing JSON data'}), 400
+
+    if 'lat' not in data:
+        return jsonify({'error': 'Missing lat in JSON data'}), 400
+
+    if 'lng' not in data:
+        return jsonify({'error': 'Missing lng in JSON data'}), 400
+
+    # Process the data (e.g., save to a database)
+    lat = data['lat']
+    lng = data['lng']
+
+    # Return a JSON response
+    return jsonify({
+        'message': f'lat: {lat}, lng: {lng} received successfully!',
+        'data': data
+    }), 200
+
+@app.route('/api/status', methods=['GET'])
+def get_data():
+    return jsonify(message="Hello from Flask API!")
+
+@app.errorhandler(404)
+def not_found(error):
+    return jsonify({'error': 'Not found'}), 404
+
+
+
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0', port=5000)