<h3 align='left'>Medicine Stock</h3>
<center>
<?php

$tbl = 'medicines';
$medid = $_REQUEST["medid"];
$dated = date("Y-m-d");

if ($_POST["submit"] == 'SAVE') {
	$medname = $_POST["medname"];
	$dateExpiry = $_POST["dateExpiry"];	
	$unitrate = $_POST["unitrate"];
	$openingstock = $_POST["openingstock"];
	$qtyreceipt = $_POST["qtyreceipt"];
	$qtyused = $_POST["qtyused"];
	$qtyinhand = $_POST["qtyinhand"];
	$qtycritical = $_POST["qtycritical"];

	if (mysql_num_rows(mysql_query("select * from $tbl where med_id=$medid"))) {
		mysql_query("update $tbl set med_name='$medname',dateExpiry='$dateExpiry',unit_rate=$unitrate,
		qty_critical=$qtycritical,login_id='$user' where med_id=$medid");
	} else if ($medname) {
		// for new medicines $qtyinhand = $qtyreceipt
		mysql_query("insert into $tbl(med_name,dateExpiry,unit_rate,opening_stock,qty_receipt,qty_used,qty_inhand,qty_critical,login_id) 
		values('$medname','$dateExpiry',$unitrate,$openingstock,$qtyreceipt,$qtyused,$qtyreceipt,$qtycritical,'$user')");
	}
} else if ($_GET["del"] == 1) {
	mysql_query("delete from $tbl where med_id=$medid");
}

?>
<font color='red'><b>Pink lines indicate out of stock medicines<br>
For new medicines, quantity in hand equals receipt quantity at the time of entry.</b></font> 
<table border='1' width='90%' cellpadding='3pt'>
<tr><th>Sr</th><th>Medicine Name</th><th>Expiry Date</th><th>Unit Rate</th><th>Opening Stock</th>
<th>Received Qty</th><th>Used Qty</th><th>Inhand Qty</th><th>Critical Level</th><th>LoginID</th><th>Dated</th></tr>

<?php
if (!$medid) {
	echo "<tr><th>+</th>
	<td><input type='text' name='medname' value='' size='30'></td>
	<td align='center'><input type='text' name='dateExpiry' value='$dated' size='10'></td>
	<td nowrap align='center'>Rs. <input type='text' name='unitrate' value='0.00' size='5'></td>
	<td align='center'><input type='text' name='openingstock' value='0' size='5'></td>
	<td align='center'><input type='text' name='qtyreceipt' value='0' size='5'></td>
	<td align='center'><input type='text' name='qtyused' value='0' size='5'></td>
	<td align='center'><input type='text' name='qtyinhand' value='0' size='5'></td>
	<td align='center'><input type='text' name='qtycritical' value='0' size='5'></td>
	<td>$user</td>
	<td align='center'><input type='submit' name='submit' value='SAVE'></td></tr>";     
} else {
	echo "<tr><td colspan='11'><a href='?pg=$pg&medid='>+</a></td></tr>";
}

$rs = mysql_query("select * from $tbl order by med_name");
while ($o = mysql_fetch_object($rs)) {
	$i++;
    echo "<tr bgcolor='".($o->qty_inhand == $o->qty_critical ? 'pink' : '')."'>
	<th><a name='$i' href='?pg=$pg&medid=$o->med_id#$i'>$i</a></th>";
	if ($medid == $o->med_id) {
        echo "<td><input type='hidden' name='medid' value='$o->med_id'>
		<input type='text' name='medname' value='$o->med_name' size='30'></td>
		<td align='center'><input type='text' name='dateExpiry' value='$o->dateExpiry' size='10'></td>
        <td nowrap align='center'>Rs. <input type='text' name='unitrate' value='$o->unit_rate' size='5'></td>
        <td align='center'><input type='text' name='openingstock' value='$o->opening_stock' size='5'></td>
        <td align='right'>$o->qty_receipt</td>
		<td align='right'>$o->qty_used</td>
		<td align='right'>$o->qty_inhand</td>
        <td align='center'><input type='text' name='qtycritical' value='$o->qty_critical' size='5'></td>
        <td>$o->login_id</td>
		<td align='center'><input type='submit' name='submit' value='SAVE'> 
		<a href='?pg=$pg&del=1&medid=$medid'>x</a></td>";     
	} else {
 		echo "<td>$o->med_name</td><td align='right'>$o->dateExpiry</td>
		<td align='right'>Rs. $o->unit_rate</td><td align='right'>$o->opening_stock</td><td align='right'>$o->qty_receipt</td>
		<td align='right'>$o->qty_used</td><td align='right'>$o->qty_inhand</td><td align='right'>$o->qty_critical</td>
		<td>$o->login_id</td><td nowrap>$o->date_updation</td>";
	}
	echo "</tr>";	
}

?>
</table>
</center>