added GPR

python_app/models/run_config_validation.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from typing import Any
 
-from python_app.models.run_config_schema import ComboModel, RingEndpointModel, SwitchModel
+from python_app.models.run_config_schema import ComboModel, GprModel, RingEndpointModel, SwitchModel
 
 def load_switch_payload(
     payload: dict[str, Any],
@@ -30,6 +30,37 @@ def load_ring_payload(payload: dict[str, Any], target: RingEndpointModel) -> Non
     target.slot_size_bytes = int(payload.get("slot_size_bytes", target.slot_size_bytes))
 
 
+def validate_gpr_model(
+    gpr: GprModel,
+    *,
+    input_switch_positions: int,
+    output_switch_positions: int,
+) -> None:
+    """Validate stable GPR config against current switch dimensions."""
+    if gpr.mode not in {"point", "extended"}:
+        raise ValueError("gpr.mode must be either 'point' or 'extended'")
+    if float(gpr.relative_permittivity) <= 0.0:
+        raise ValueError("gpr.relative_permittivity must be > 0")
+
+    seen_output_positions: set[int] = set()
+    for entry in gpr.tx_geometry:
+        output_pos = int(entry.output_pos)
+        if output_pos < 0 or output_pos >= int(output_switch_positions):
+            raise ValueError("gpr.tx_geometry output_pos is out of range")
+        if output_pos in seen_output_positions:
+            raise ValueError("gpr.tx_geometry contains duplicate output_pos")
+        seen_output_positions.add(output_pos)
+
+    seen_input_positions: set[int] = set()
+    for entry in gpr.rx_geometry:
+        input_pos = int(entry.input_pos)
+        if input_pos < 0 or input_pos >= int(input_switch_positions):
+            raise ValueError("gpr.rx_geometry input_pos is out of range")
+        if input_pos in seen_input_positions:
+            raise ValueError("gpr.rx_geometry contains duplicate input_pos")
+        seen_input_positions.add(input_pos)
+
+
 def parse_combos_from_text(text: str) -> list[ComboModel]:
     """Parse UI combos string in `input:output,input:output` format."""
     cleaned = text.strip()