收緊 PChome 單位價可比邊界

services/marketplace_product_matcher.py

@@ -483,12 +483,24 @@ def _spec_mention_count(identity: ProductIdentity) -> int:
 
 
 def _has_overlapping_base_spec(left: ProductIdentity, right: ProductIdentity) -> bool:
-    for left_value in left.volumes_ml:
-        if any(_close_number(left_value, right_value) for right_value in right.volumes_ml):
-            return True
-    for left_value in left.weights_g:
-        if any(_close_number(left_value, right_value) for right_value in right.weights_g):
-            return True
+    left_volumes = tuple(sorted(set(left.volumes_ml)))
+    right_volumes = tuple(sorted(set(right.volumes_ml)))
+    if left_volumes or right_volumes:
+        if not left_volumes or not right_volumes:
+            return False
+        if len(left_volumes) > 1 or len(right_volumes) > 1:
+            return False
+        return _close_number(left_volumes[0], right_volumes[0])
+
+    left_weights = tuple(sorted(set(left.weights_g)))
+    right_weights = tuple(sorted(set(right.weights_g)))
+    if left_weights or right_weights:
+        if not left_weights or not right_weights:
+            return False
+        if len(left_weights) > 1 or len(right_weights) > 1:
+            return False
+        return _close_number(left_weights[0], right_weights[0])
+
     return False