Added logic for fixing inventory status

brmbar3/SQL

@@ -41,6 +41,8 @@ CREATE TABLE accounts (
 );
 INSERT INTO accounts (name, currency, acctype) VALUES ('BrmBar Cash', (SELECT id FROM currencies WHERE name='Kč'), 'cash');
 INSERT INTO accounts (name, currency, acctype) VALUES ('BrmBar Profits', (SELECT id FROM currencies WHERE name='Kč'), 'income');
+INSERT INTO accounts (name, currency, acctype) VALUES ('BrmBar Excess', (SELECT id FROM currencies WHERE name='Kč'), 'income');
+INSERT INTO accounts (name, currency, acctype) VALUES ('BrmBar Deficit', (SELECT id FROM currencies WHERE name='Kč'), 'expense');
 
 
 CREATE SEQUENCE barcodes_id_seq START WITH 1 INCREMENT BY 1;

brmbar3/brmbar-cli.py

@@ -8,7 +8,7 @@ import brmbar
 
 
 def help():
-    print("""BrmBar v3 (c) Petr Baudis <pasky@ucw.cz> 2012
+    print("""BrmBar v3 (c) Petr Baudis <pasky@ucw.cz> 2012-2013
 
 Usage: brmbar-cli.py COMMAND ARGS...
 
@@ -30,22 +30,8 @@ Usage: brmbar-cli.py COMMAND ARGS...
 		screen of the GUI.
 	adduser USER
 		Add user (debt) account with given username.
-!   inventory ITEM1 NEW_AMOUNT1 ITEM2 NEW_AMOUNT2 ...
-    Create a special inventory recounting
-
-    mensi pocet [item] == prevedu na ucet manko (deficiency) BEZ marginu
-    vetsi pocet [item] == prevedu z uctu primnozky (excess)
-    stejny pocet [item] == prazdny prevod mezi item a item
-		Create a custom transaction that will change balance
-		of a variety of items at once, and either deduce
-		buy price (+amt) or add sell price (-amt) to the
-		cash balance for all of these items. This is useful
-		e.g. after events where stock is sold offline or when
-		doing an inventory recount.
-		If cash balance discrepancy is discovered as well
-		during the inventory recounting, first do changestock,
-		then compare actual and nominal cash balance again,
-		then issue changecash command if necessary.
+    inventory NEW_AMOUNT1 ITEM1 NEW_AMOUNT2 ITEM2
+        Inventory recounting (fixing the number of items)
 !	changecash +-AMT
 		Create a custom transaction that updates nominal cash
 		balance based on the actual cash balance counted
@@ -159,5 +145,15 @@ elif sys.argv[1] == "adduser":
     acct.add_barcode(sys.argv[2]) # will commit
     print("{}: id {}".format(acct.name, acct.id));
 
+elif sys.argv[1] == "inventory":
+    if (len(sys.argv) % 2 != 0 or len(sys.argv) < 4):
+        print ("Invalid number of parameters, count your parameters.")
+    else:
+        iamt = int(sys.argv[2])
+        iacct = load_item(sys.argv[3]) #TODO:use barcodes later
+        print("Current state {} (id {}): {} pcs".format(iacct.name, iacct.id, iacct.balance()))
+        shop.fix_inventory(item = iacct, amount = iamt)
+        print("New state {} (id {}): {} pcs".format(iacct.name, iacct.id, iacct.balance()))
+
 else:
     help()

brmbar3/brmbar/Shop.py

@@ -7,18 +7,22 @@ class Shop:
 
     Business logic so that only interaction is left in the hands
     of the frontend scripts. """
-    def __init__(self, db, currency, profits, cash):
+    def __init__(self, db, currency, profits, cash, excess, deficit):
         self.db = db
         self.currency = currency # brmbar.Currency
         self.profits = profits # income brmbar.Account for brmbar profit margins on items
         self.cash = cash # our operational ("wallet") cash account
+        self.excess = excess # account from which is deducted cash during inventory item fixing (when system contains less items than is the reality)
+        self.deficit = deficit # account where is put cash during inventory item fixing (when system contains more items than is the reality)
 
     @classmethod
     def new_with_defaults(cls, db):
         return cls(db,
             currency = Currency.default(db),
             profits = Account.load(db, name = "BrmBar Profits"),
-            cash = Account.load(db, name = "BrmBar Cash"))
+            cash = Account.load(db, name = "BrmBar Cash"),
+            excess = Account.load(db, name = "BrmBar Excess"),
+            deficit = Account.load(db, name = "BrmBar Deficit"))
 
     def sell(self, item, user, amount = 1):
         # Sale: Currency conversion from item currency to shop currency
@@ -139,3 +143,21 @@ class Shop:
         for inventory in cur:
             accts += [ Account.load(self.db, id = inventory[0]) ]
         return accts
+
+    def fix_inventory(self, item, amount):
+        amount_in_reality = amount
+        amount_in_system = item.balance()
+        (buy, sell) = item.currency.rates(self.currency)
+
+        diff = abs(amount_in_reality - amount_in_system)
+        buy_total = buy * diff
+        if amount_in_reality > amount_in_system:
+            transaction = self._transaction(description = "BrmBar inventory fix of {}pcs {} in system to {}pcs in reality".format(amount_in_system, item.name,amount_in_reality))
+            item.debit(transaction, diff, "Inventory fix excess")
+            self.excess.credit(transaction, buy_total, "Inventory fix excess " + item.name)
+            self.db.commit()
+        elif amount_in_reality < amount_in_system:
+            transaction = self._transaction(description = "BrmBar inventory fix of {}pcs {} in system to {}pcs in reality".format(amount_in_system, item.name,amount_in_reality))
+            item.credit(transaction, diff, "Inventory fix deficit")
+            self.deficit.credit(transaction, buy_total, "Inventory fix deficit " + item.name)
+            self.db.commit()