<h3>Stock Receipt</h3>
<?php
$tbl = "st_stockin";

$id = $_REQUEST["id"];
$supplier = $_REQUEST["supplier"];
$billno = $_REQUEST["bill_no"];
$category = $_REQUEST["category"];
$subcategory = $_REQUEST["subcategory"];
$item = $_REQUEST["item"];
$qtyin = $_POST["qty_in"];
$xqtyin = $_POST["xqty_in"];
$rate = $_POST["rate"];
$dated = date("Y-m-d");

if ($_POST["submit"] == 'SAVE') {
	if (mysql_num_rows(mysql_query("select * from $tbl where id=$id"))) {
		mysql_query("update $tbl set bill_no='$billno',qty_in=$qtyin,supplier=$supplier,
		rate=$rate,dated=now() 
		where id=$id");
		//adjust qty in category table
		mysql_query("update st_category set qty_in=qty_in-$xqtyin+$qtyin where id=$category");
		//adjust qty in subcategory table
		mysql_query("update st_subcategory set qty_in=qty_in-$xqtyin+$qtyin where id=$subcategory");
		//adjust qty in item table
		mysql_query("update st_items set qty_in=qty_in-$xqtyin+$qtyin where id=$item");
	} else {
                mysql_query("insert into $tbl(bill_no,item,qty_in,supplier,rate,dated) 
		values('$billno',$item,$qtyin,$supplier,$rate,now())");
		//increase qty in category table
		mysql_query("update st_category set qty_in=qty_in+$qtyin where id=$category");
		//increase qty in subcategory table
		mysql_query("update st_subcategory set qty_in=qty_in+$qtyin where id=$subcategory");
		//increase qty in item table
		mysql_query("update st_items set qty_in=qty_in+$qtyin where id=$item");
	}
}

if ($_POST["submit"] == 'DELETE') {
	mysql_query("delete from $tbl where id=$id");
	//reduce qty in category table
	mysql_query("update st_category set qty_in=qty_in-$xqtyin where id=$category");
	//reduce qty in subcategory table
	mysql_query("update st_subcategory set qty_in=qty_in-$xqtyin where id=$subcategory");
	//decude qty in item table
	mysql_query("update st_items set qty_in=qty_in-$xqtyin where id=$item");
}
?>

<center>
<table width='90%'>
<tr><td>Select

<?php
echo "supplier <select name='supplier' onchange=\"javascript: document.location.href='?pg=$pg&supplier='+this.value\">
<option value=''></option>";

$rs = mysql_query("select * from st_suppliers order by firm_name");
while ($o = mysql_fetch_object($rs)) {
        echo "<option value='$o->id'";
        if ($o->id == $supplier) echo " selected";
        echo ">$o->firm_name</option>";
}

echo "</select>
Bill No. <input type='text' name='bill_no' size='10' value='$billno'>
Dated <input type='text' name='bill_date' size='10' value='$billdate'>
<input type='submit' name='submit' value='OK'>
</td></tr>
</table>";

if ($billno) {
	echo "<table width='50%'>
	<tr><th nowrap>
	Select category <select name='category' onchange=\"javascript: document.location.href='?pg=$pg&supplier=$supplier&bill_no=$billno&category='+this.value\">
	<option value=''></option>";

	$rs = mysql_query("select * from st_category order by code");
	while ($o = mysql_fetch_object($rs)) {
        	echo "<option value='$o->id'";
	        if ($o->id == $category) echo " selected";
        	echo ">$o->code ($o->qty_in/$o->qty_out)</option>";
	}

	echo "</select> 
	subcategory <select name='subcategory' onchange=\"javascript: document.location.href='?pg=$pg&supplier=$supplier&bill_no=$billno&category=$category&subcategory='+this.value\">
	<option value=''></option>";

	$rs = mysql_query("select * from st_subcategory where category=$category order by code");
	while ($o = mysql_fetch_object($rs)) {
        	echo "<option value='$o->id'";
	        if ($o->id == $subcategory) echo " selected";
        	echo ">$o->code ($o->qty_in/$o->qty_out)</option>";
	}

	echo "</select> 
	</th></tr>
	</table>";
}

if ($subcategory) {
	echo "<table width='60%' border='1' style='border-collapse: collapse'>
	<tr><th>No.</th><th>Item</th><th>Qty In</th><th>Rate</th><th nowrap>Dated</th></tr>";

	if (!$id) {
		echo "<tr><td>New</td>
		<td><select name='item'>
		<option value=''></option>";

		$rs = mysql_query("select * from st_items where category=$category and subcategory=$subcategory order by code");
		while ($o = mysql_fetch_object($rs)) {
       			echo "<option value='$o->id'";
       			if ($o->id == $item) echo " selected";
       			echo ">$o->code ($o->qty_in/$o->qty_out)</option>";
		}
		echo "</select></td>
		<td><input type='text' name='qty_in' size='5' value='0'></td>
		<td><input type='text' name='rate' size='5' value='0'></td>
		<td>$dated</td></tr>
		<tr><th colspan='5'><input type='submit' name='submit' value='SAVE'></th></tr>";
	} else {
		echo "<tr><td colspan='5'><a href='?pg=$pg&supplier=$supplier&bill_no=$billno&category=$category&subcategory=$subcategory'>New</a></td></tr>";
	}
	
	$rs = mysql_query("select * from $tbl where bill_no='$billno' order by dated desc");
	while ($o = mysql_fetch_object($rs)) {
		$i++;        
       		echo "<tr><td><a name='$i' href='?pg=$pg&id=$o->id&supplier=$supplier&bill_no=$billno&category=$category&subcategory=$subcategory&item=$o->item#$i'>$i</a></td>";
		if ($o->id == $id) {
        		echo "<td><select name='item'>
			<option value=''></option>";

        	        $sr = mysql_query("select * from st_items where category=$category and subcategory=$subcategory order by code");
                	while ($q = mysql_fetch_object($sr)) {
                        	echo "<option value='$q->id'";
                        	if ($q->id == $item) echo " selected";
                        	echo ">$q->code ($q->qty_ini/$q->qty_out)</option>";
                	}
                	echo "</select></td>
        		<td><input type='text' name='qty_in' size='5' value='$o->qty_in'></td>
			<td><input type='text' name='rate' size='5' value='$o->rate'></td>
			<td>$o->dated<input type='hidden' name='xqty_in' value='$o->qty_in'></td>
			<tr><th colspan='4'><input type='submit' name='submit' value='SAVE'></th>
			<th><input type='submit' name='submit' value='DELETE'>
			<input type='hidden' name='id' value='$o->id'></th></tr>";
        	} else {
			echo "<td>".item_detail($o->item)."</td><td>$o->qty_in</td><td>$o->rate</td><td nowrap>$o->dated</td>";
		}
		echo "</tr>";
	}
	echo "</table>";
}
?>
</center>