Fix how bottle deposit amounts are calculated, for Catapult export

rattail_corepos/corepos/importing/db/exporters/catapult_inventory.py

@@ -29,6 +29,7 @@ import logging
 
 from sqlalchemy.exc import ProgrammingError
 from sqlalchemy import orm
+from sqlalchemy.orm.exc import NoResultFound
 
 from corepos import enum as corepos_enum
 from corepos.db.office_op import model as corepos
@@ -172,6 +173,29 @@ class InventoryItemImporter(FromCore, catapult_importing.model.InventoryItemImpo
         # tax_component_ids_1 = (1,)
         # tax_component_ids_2 = (2,)
 
+        self.deposits = {}
+        deposits = self.host_session.query(corepos.Product.deposit.distinct())\
+                                    .all()
+
+        def cache(deposit, i):
+            assert isinstance(deposit, tuple)
+            assert len(deposit) == 1
+            deposit = deposit[0]
+            if deposit:
+                deposit = int(deposit)
+                upc = "{:013d}".format(deposit)
+                try:
+                    product = self.host_session.query(corepos.Product)\
+                                               .filter(corepos.Product.upc == upc)\
+                                               .one()
+                except NoResultFound:
+                    pass        # we will log warnings per-item later
+                else:
+                    self.deposits[deposit] = product
+
+        self.progress_loop(cache, deposits,
+                           message="Caching product deposits data")
+
     def query(self):
         query = self.host_session.query(corepos.Product)\
                                  .order_by(corepos.Product.upc)\
@@ -247,6 +271,15 @@ class InventoryItemImporter(FromCore, catapult_importing.model.InventoryItemImpo
                             product.upc, diff, product)
             price_divider = product.quantity
 
+        bottle_deposit = None
+        if product.deposit:
+            deposit = int(product.deposit)
+            if deposit in self.deposits:
+                bottle_deposit = self.deposits[deposit].normal_price
+            else:
+                log.warning("product %s has unknown deposit %s which will be ignored: %s",
+                            product.upc, deposit, product)
+
         sold_by_ea_or_lb = None
         if is_plu:
             sold_by_ea_or_lb = 'LB' if product.scale else 'EA'
@@ -420,7 +453,7 @@ class InventoryItemImporter(FromCore, catapult_importing.model.InventoryItemImpo
             # TODO: does CORE have these?
             # 'disc_mult': None,
 
-            'bottle_deposit': product.deposit or None,
+            'bottle_deposit': bottle_deposit,
 
             # TODO: does CORE have this?
             # 'pos_menu_group': None,