243 prevent auto post process from re adding units if already present

utils/blech_post_process_utils.py

@@ -623,11 +623,20 @@ def get_latest_unit_name(self,):
 
         return unit_name, max_unit
 
-    def generate_hash(self,):
+    def generate_hash(self, electrode_number, waveform_count):
         """
-        Generate a 10 character hash for the unit
+        Generate a 10 character hash for the unit based on electrode and waveform count
+
+        Args:
+            electrode_number: int, electrode number 
+            waveform_count: int, number of waveforms in unit
+
+        Returns:
+            str: 10 character hash
         """
-        return str(uuid.uuid4()).split('-')[0]
+        # Create deterministic hash from inputs
+        hash_input = f"{electrode_number}_{waveform_count}"
+        return str(uuid.uuid5(uuid.NAMESPACE_DNS, hash_input)).split('-')[0]
 
     def save_unit(
             self,
@@ -664,8 +673,18 @@ def save_unit(
 
         # Get a hash for the unit to compare stored data 
         # with unit_descriptor table
-        unit_hash = self.generate_hash()
-
+        unit_hash = self.generate_hash(electrode_num, len(unit_times))
+
+        # Only check for existing hash if this isn't the first unit
+        if max_unit >= 0:
+            existing_units = self.get_saved_units_hashes()
+            if unit_hash in existing_units['hash'].values:
+                existing_unit = existing_units[existing_units['hash'] == unit_hash].iloc[0]
+                print(f"Unit already exists as {existing_unit['unit_name']}")
+                return continue_bool, existing_unit['unit_name']
+
+        print(f"Adding new unit {unit_name}")
+
         # Add to HDF5
         waveforms = self.hf5.create_array('/sorted_units/%s' % unit_name, 
                         'waveforms', unit_waveforms)