refactored nodes and implemented API function

app/routers/systems.py

@@ -1,6 +1,7 @@
 from quart import Blueprint, jsonify, request, abort
-from internal.db_wrappers import System, SystemDbController
+from internal.db_wrappers import SystemDbController
 from werkzeug.exceptions import HTTPException
+from internal.types import System
 
 systems_bp = Blueprint('systems', __name__)
 db_h = SystemDbController()
@@ -257,3 +258,29 @@ async def dismiss_client_from_system_route(system_id: str):
     except Exception as e:
         print(f"Error during system de-assignment: {e}")
         abort(500, f"Internal server error: {e}")
+
+
+@systems_bp.route('/search', methods=['GET'])
+async def search_systems_route():
+    """
+    API endpoint to search for systems based on query parameters.
+    Allows searching by 'name', 'frequency_khz', or any other field present in the System model.
+    Example: /systems/search?name=MySystem&frequency_khz=1000
+    """
+    print("\n--- Handling GET /systems/search ---")
+    try:
+        query_params = dict(request.args)
+
+        systems = await db_h.find_systems(query_params)
+
+        if systems:
+            # If systems are found, return them as a list of dictionaries
+            return jsonify([system.to_dict() for system in systems]), 200 # 200 OK
+        else:
+            # If no systems match the query, return 404 Not Found
+            return jsonify({"message": "No systems found matching the criteria"}), 404
+    except HTTPException:
+        raise
+    except Exception as e:
+        print(f"Error searching systems: {e}")
+        abort(500, f"Internal server error: {e}")