+/*
+ Retrieve bank charge amount from GL postings for customer payment.
+ . Bank charge is not stored explicitly in database as of 2.3.xx
+ . Due to roundings the retrieved charge can differ from the original amount when bank_curr!=home_curr && bank_curr!=cust_curr
+*/
+function get_cust_bank_charge($type, $trans_no)
+{
+
+ // restore charge amount from amounts in bank currency if possible, otherwise calculate from GL posting with exchange rate used for amount posting
+ $sql = "SELECT IF(act.bank_curr_code=home_curr.value, charge.amount,
+ IF(act.bank_curr_code=debtor.curr_code, -(trans.amount-ar.ov_amount+ar.ov_discount),
+ IFNULL(charge.amount*trans.amount/pmt.amount, 0)))
+ FROM ".TB_PREF."bank_trans trans
+ LEFT JOIN ".TB_PREF."bank_accounts act ON trans.bank_act=act.id
+ LEFT JOIN ".TB_PREF."sys_prefs charge_act ON charge_act.name='bank_charge_act'
+ LEFT JOIN ".TB_PREF."sys_prefs home_curr ON home_curr.name='curr_default'
+ LEFT JOIN ".TB_PREF."gl_trans charge ON charge.type=trans.type AND charge.type_no=trans.trans_no AND charge.account=charge_act.value
+ LEFT JOIN ".TB_PREF."gl_trans pmt ON pmt.type=trans.type AND pmt.type_no=trans.trans_no AND pmt.account=act.account_code
+ LEFT JOIN ".TB_PREF."debtors_master debtor ON trans.person_id=debtor.debtor_no AND trans.person_type_id=".PT_CUSTOMER."
+ LEFT JOIN ".TB_PREF."debtor_trans ar ON trans.type=ar.type AND trans.trans_no=ar.trans_no
+ WHERE pmt.amount!=0 AND charge.amount!=0 AND trans.amount!=0
+ AND trans.type=".db_escape($type)." AND trans.trans_no=".db_escape($trans_no);
+
+ $result = db_query($sql, "cannot retrieve bank charge");
+
+ if (!db_num_rows($result))
+ return 0;
+
+ $myrow = db_fetch($result);
+ return $myrow['0'];
+}