fixing error message

cg_lims/EPPs/udf/calculate/pool_normalization.py

@@ -10,7 +10,7 @@
 from cg_lims.get.artifacts import get_artifacts
 
 LOG = logging.getLogger(__name__)
-
+failed_samples = []
 
 def get_final_concentration(process: Process, final_concentration_udf: str) -> float:
     """Return final concentration value from process."""
@@ -49,15 +49,21 @@ def get_total_volume(artifact: Artifact, total_volume_udf: str) -> float:
 
 
 def calculate_sample_volume(
-    final_concentration: float, total_volume: float, sample_concentration: float
+    final_concentration: float, artifact: Artifact
 ) -> float:
     """Calculate and return the sample volume needed to reach the desired final concentration."""
+    sample_concentration: float = get_artifact_concentration(
+        artifact=artifact, concentration_udf=concentration_udf
+    )
+    total_volume: float = get_total_volume(artifact=artifact, total_volume_udf=total_volume_udf)
     if final_concentration > sample_concentration:
         error_message: str = (
             f"The final concentration ({final_concentration} nM) is"
             f" higher than the original one ({sample_concentration} nM). No dilution needed."
         )
         LOG.error(error_message)
+        global failed_samples
+        failed_samples = failed_samples.append(artifact.samples[0].id)
         return total_volume
     return (final_concentration * total_volume) / sample_concentration
 
@@ -119,6 +125,10 @@ def pool_normalization(ctx: click.Context):
             buffer_volume_udf="Volume Buffer (ul)",
             concentration_udf="Concentration (nM)",
         )
+        if failed_samples:
+            error_message = f"The following samples had a lower concentration than targeted: {failed_samples}"
+            LOG.info(error_message)
+            raise InvalidValueError(error_message)
         message: str = "Volumes were successfully calculated."
         LOG.info(message)
         click.echo(message)