<?php
/**********************************************************************
    Copyright (C) FrontAccounting, LLC.
	Released under the terms of the GNU General Public License, GPL, 
	as published by the Free Software Foundation, either version 3 
	of the License, or (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
    See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
***********************************************************************/
//-------------------------------------------------------------------------------------------------------------

function add_supp_trans($type, $supplier_id, $date_, $due_date, $reference, $supp_reference,
	$amount, $amount_tax, $discount, $err_msg="", $rate=0)
{
	$date = date2sql($date_);
	if ($due_date == "")
		$due_date = "0000-00-00";
	else
		$due_date = date2sql($due_date);

	$trans_no = get_next_trans_no($type);

	$curr = get_supplier_currency($supplier_id);
	
	if ($rate == 0)
		$rate = get_exchange_rate_from_home_currency($curr, $date_);


	$sql = "INSERT INTO ".TB_PREF."supp_trans (trans_no, type, supplier_id, tran_date, due_date,
		reference, supp_reference, ov_amount, ov_gst, rate, ov_discount) ";
	$sql .= "VALUES (".db_escape($trans_no).", ".db_escape($type)
	.", ".db_escape($supplier_id).", '$date', '$due_date',
		".db_escape($reference).", ".db_escape($supp_reference).", ".db_escape($amount)
		.", ".db_escape($amount_tax).", ".db_escape($rate).", ".db_escape($discount).")";

	if ($err_msg == "")
		$err_msg = "Cannot insert a supplier transaction record";

	db_query($sql, $err_msg);
	add_audit_trail($type, $trans_no, $date_);

	return $trans_no;
}

//-------------------------------------------------------------------------------------------------------------

function get_supp_trans($trans_no, $trans_type=-1)
{
	$sql = "SELECT ".TB_PREF."supp_trans.*, (".TB_PREF."supp_trans.ov_amount+".TB_PREF."supp_trans.ov_gst+".TB_PREF."supp_trans.ov_discount) AS Total,
		".TB_PREF."suppliers.supp_name AS supplier_name, ".TB_PREF."suppliers.curr_code AS SupplierCurrCode ";

	if ($trans_type == ST_SUPPAYMENT)
	{
		// it's a payment so also get the bank account
		$sql .= ", ".TB_PREF."bank_accounts.bank_name, ".TB_PREF."bank_accounts.bank_account_name, ".TB_PREF."bank_accounts.bank_curr_code,
			".TB_PREF."bank_accounts.account_type AS BankTransType, ".TB_PREF."bank_trans.amount AS BankAmount,
			".TB_PREF."bank_trans.ref ";
	}

	$sql .= " FROM ".TB_PREF."supp_trans, ".TB_PREF."suppliers ";

	if ($trans_type == ST_SUPPAYMENT)
	{
		// it's a payment so also get the bank account
		$sql .= ", ".TB_PREF."bank_trans, ".TB_PREF."bank_accounts";
	}

	$sql .= " WHERE ".TB_PREF."supp_trans.trans_no=".db_escape($trans_no)."
		AND ".TB_PREF."supp_trans.supplier_id=".TB_PREF."suppliers.supplier_id";

	if ($trans_type > 0)
		$sql .= " AND ".TB_PREF."supp_trans.type=".db_escape($trans_type);

	if ($trans_type == ST_SUPPAYMENT)
	{
		// it's a payment so also get the bank account
		$sql .= " AND ".TB_PREF."bank_trans.trans_no =".db_escape($trans_no)."
			AND ".TB_PREF."bank_trans.type=".db_escape($trans_type)."
			AND ".TB_PREF."bank_accounts.id=".TB_PREF."bank_trans.bank_act ";
	}

	$result = db_query($sql, "Cannot retreive a supplier transaction");

    if (db_num_rows($result) == 0)
    {
       // can't return nothing
       display_db_error("no supplier trans found for given params", $sql, true);
       exit;
    }

    if (db_num_rows($result) > 1)
    {
       // can't return multiple
       display_db_error("duplicate supplier transactions found for given params", $sql, true);
       exit;
    }

    return db_fetch($result);
}

//----------------------------------------------------------------------------------------

function exists_supp_trans($type, $type_no)
{
	if ($type == ST_SUPPRECEIVE)
		return exists_grn($type_no);

	$sql = "SELECT trans_no FROM ".TB_PREF."supp_trans WHERE type=".db_escape($type)."
		AND trans_no=".db_escape($type_no);
	$result = db_query($sql, "Cannot retreive a supplier transaction");

    return (db_num_rows($result) > 0);
}

//----------------------------------------------------------------------------------------

function void_supp_trans($type, $type_no)
{
	$sql = "UPDATE ".TB_PREF."supp_trans SET ov_amount=0, ov_discount=0, ov_gst=0,
		alloc=0 WHERE type=".db_escape($type)." AND trans_no=".db_escape($type_no);

	db_query($sql, "could not void supp transactions for type=$type and trans_no=$type_no");
}

//----------------------------------------------------------------------------------------

function post_void_supp_trans($type, $type_no)
{
	if ($type == ST_SUPPAYMENT)
	{
		void_supp_payment($type, $type_no);
		return true;
	}

	if ($type == ST_SUPPINVOICE || $type == ST_SUPPCREDIT)
	{
	 	void_supp_invoice($type, $type_no);
		return true;
	}

	if ($type == SUPPRECEIVE)
	{
	 	return void_grn($type_no);
	}

	return false;
}

//----------------------------------------------------------------------------------------

?>