Fixed false overdraft problem on cash accounts

diff --git a/gl/includes/db/gl_db_bank_trans.inc b/gl/includes/db/gl_db_bank_trans.inc
index 59dbaa2322d178fa520dab093636449ef5f26f62..3bd65e23b974270983b1dcb6e2c6e0c474951434 100644 (file)
--- a/gl/includes/db/gl_db_bank_trans.inc
+++ b/gl/includes/db/gl_db_bank_trans.inc
@@ -158,21 +158,28 @@ function void_bank_trans($type, $type_no, $nested=false)
 *      Returns null or transaction in conflict. Running balance is checked on daily basis only, to enable ID change after edition.
 *      $delta_amount - tested change in bank balance at $date.
 **/
-function check_bank_account_history($delta_amount, $bank_account, $date, $user=null)
+function check_bank_account_history($delta_amount, $bank_account, $date=null, $user=null)
 {
-       if ($delta_amount >= 0)
+       if ($delta_amount >= 0 && isset($date))
                 return null;   // amount increese is always safe
 
-       $balance = get_bank_account_limit($bank_account, $date, $user);
+       $balance = $date ? get_bank_account_limit($bank_account, $date, $user) : 0;
 
-       if (!isset($balance))
+       if (!isset($balance) && isset($date))
                return null;    // unlimited account
 
-       $date = date2sql($date);
-       $balance+= $delta_amount;
+       if ($balance < $delta_amount)
+               return array('amount' => $balance, 'trans_date'=> $date);
 
-       $sql = "SELECT sum(amount) as amount FROM ".TB_PREF."bank_trans WHERE bank_act=".db_escape($bank_account)
-               ." AND trans_date >= '$date' GROUP BY trans_date ORDER BY trans_date ASC";
+       $balance += $delta_amount;
+
+       $sql = "SELECT sum(amount) as amount, trans_date FROM ".TB_PREF."bank_trans WHERE bank_act=".db_escape($bank_account);
+       if ($date)
+       {
+               $date = date2sql($date);
+               $sql .= " AND trans_date > '$date'";
+       }
+       $sql .= " GROUP BY trans_date ORDER BY trans_date ASC";
 
        $history = db_query($sql, "cannot retrieve cash account history");