if (@txpinterface == 'admin') {
	global $smd_prefalizer_event, $smd_prefalizer_privs, $smd_prefalizer_types;

	$smd_prefalizer_event = 'smd_prefalizer';
	$smd_prefalizer_privs = '1';
	$smd_prefalizer_types = array(0 => 'basic', 1 => 'advanced', 2 => 'hidden');

	add_privs($smd_prefalizer_event, $smd_prefalizer_privs);
	register_tab("admin", $smd_prefalizer_event, smd_prefalizer_gTxt('tab_name'));
	register_callback('smd_prefalizer', $smd_prefalizer_event);
}

function smd_prefalizer($event, $step) {
	if(!$step or !in_array($step, array(
			'smd_prefalizer_add',
			'smd_prefalizer_save',
			'smd_prefalizer_delete',
			'smd_prefalizer_change_pageby',
		))) {
		smd_prefalizer_list('');
	} else $step();
}

// List the chosen prefs
function smd_prefalizer_list($msg='') {
	global $smd_prefalizer_event, $smd_prefalizer_types;

	pagetop(smd_prefalizer_gTxt('tab_name'), $msg);
	extract(gpsa(array('step', 'page', 'sort', 'dir', 'crit', 'search_method', 'name', 'value', 'type', 'pref_event', 'html', 'user_name', 'position')));
	$msg = ($msg) ? $msg : gps('msg');

	// Handle paging / sorting
	$pageby = (gps('qty')) ? gps('qty') : ((cs('smd_prefalizer_pageby')) ? cs('smd_prefalizer_pageby') : 25);
	$dir = ($dir == 'desc') ? 'desc' : 'asc';
	switch ($sort) {
		case 'value':
			$sort_sql = 'val '.$dir.', name asc';
			break;
		case 'type':
			$sort_sql = 'type '.$dir.', name asc';
			break;
		case 'event':
			$sort_sql = 'event '.$dir.', name asc';
			break;
		case 'html':
			$sort_sql = 'html '.$dir.', name asc';
			break;
		case 'user':
			$sort_sql = 'user_name '.$dir.', name asc';
			break;
		case 'position':
			$sort_sql = 'position '.$dir.', name asc';
			break;
		case 'name':
		default:
			$sort = 'name';
			$sort_sql = 'name '.$dir;
			break;
	}
	$switch_dir = ($dir == 'desc') ? 'asc' : 'desc';
	$criteria = 1;

	if ($search_method && $crit !== false) {
		$crit_escaped = doSlash($crit);
		$critsql = array(
			'name' => "name like '%$crit_escaped%'",
			'value' => "val like '%$crit_escaped%'",
			'type' => "type = " . ((is_numeric($crit_escaped)) ? "$crit_escaped" : ((($crit_number = array_search(strtolower($crit_escaped), $smd_prefalizer_types)) !== false) ? $crit_number : 0)),
			'event' => "event like '%$crit_escaped%'",
			'html' => "html like '%$crit_escaped%'",
			'user' => "user_name like '%$crit_escaped%'",
			'position' => "position = '$crit_escaped'",
		);

		if (array_key_exists($search_method, $critsql)) {
			$criteria = $critsql[$search_method];
			$limit = 1000;
		} else {
			$search_method = '';
			$crit = '';
		}
	} else {
		$search_method = '';
		$crit = '';
	}
	$total = safe_count('txp_prefs', "$criteria");
	$limit = max(@$pageby, 25);
	list($page, $offset, $numPages) = pager($total, $limit, $page);

	$qs = array(
		"event" => $smd_prefalizer_event,
		"page" => $page,
		"sort" => $sort,
		"dir" => $dir,
		"crit" => $crit,
		"search_method" => $search_method,
	);

	// List the desired prefs
	$thePrefs = safe_rows('*', 'txp_prefs', "$criteria order by $sort_sql limit $offset, $limit");
	$author_list = safe_column('name', 'txp_users', '1 = 1');
	echo smd_prefalizer_search_form($crit, $search_method);
	$editFocus = ($step == 'edit') ? 'jQuery(function() { jQuery("#smd_prefalizer_value textarea").focus(); });': '';

	// Any edits to an entry are copied to this hidden form and then submitted
	echo <<<EOC
<script type="text/javascript">
function smd_prefalizer_save() {
	var stype = jQuery("#smd_prefalizer_edited #smd_prefalizer_type option:selected").val();
	var utype = jQuery("#smd_prefalizer_edited #smd_prefalizer_user_name option:selected").val();
	jQuery("#smd_prefalizer_input input[name='newname']").val(jQuery("#smd_prefalizer_edited #smd_prefalizer_name input").val());
	jQuery("#smd_prefalizer_input input[name='value']").val(jQuery("#smd_prefalizer_edited #smd_prefalizer_value textarea").val());
	jQuery("#smd_prefalizer_input #smd_prefalizer_new_type option:eq("+stype+")").attr('selected', 'selected');
	jQuery("#smd_prefalizer_input input[name='pref_event']").val(jQuery("#smd_prefalizer_edited #smd_prefalizer_event input").val());
	jQuery("#smd_prefalizer_input input[name='html']").val(jQuery("#smd_prefalizer_edited #smd_prefalizer_html input").val());
	jQuery("#smd_prefalizer_input #smd_prefalizer_newuser option[value='"+utype+"']").attr('selected', 'selected');
	jQuery("#smd_prefalizer_input input[name='position']").val(jQuery("#smd_prefalizer_edited #smd_prefalizer_position input").val());
	jQuery("form[name='smd_prefalizer_input']").trigger("submit");
}
function smd_prefalizer_togglenew() {
	box = jQuery("form[name='smd_prefalizer_input']");
	if (box.css("display") == "none") {
		box.slideDown('fast');
	} else {
		box.slideUp('fast');
	}
	jQuery('#smd_prefalizer_new .smd_focus').focus();
	return false;
}
{$editFocus}
</script>
<style type="text/css">
.smd_hidden {
	display:none;
}
#smd_prefalizer_longform #list tr.data:hover {
	background:#e7e7e7;
}
</style>
EOC;

	$newbtn = '<a class="navlink" href="#" onclick="return smd_prefalizer_togglenew();">'.smd_prefalizer_gTxt('new').'</a>';
	$headings = assHead('name','value', 'type', smd_prefalizer_gTxt('event'), smd_prefalizer_gTxt('html'), smd_prefalizer_gTxt('user'), smd_prefalizer_gTxt('position'), smd_prefalizer_gTxt('actions'));
	echo '<form method="post" name="smd_prefalizer_input" class="smd_hidden" action="'.join_qs($qs).'">';
	echo sInput('smd_prefalizer_save');
	echo hInput('name',(($step=='edit') ? $name : ''));
	echo hInput('user_name',(($step=='edit') ? $user_name : ''));
	echo startTable('smd_prefalizer_new', '', '', 8);
	echo tr($headings);
	echo '<tr id="smd_prefalizer_input">';
	echo td(fInput('text', 'newname', (($step=='edit') ? $name : ''), 'smd_focus'))
	    .td(fInput('text', 'value', (($step=='edit') ? $value : '')))
	    .td(selectInput('type', $smd_prefalizer_types, (($step=='edit') ? $type : 2), false, '', 'smd_prefalizer_new_type'))
	    .td(fInput('text', 'pref_event', (($step=='edit') ? $pref_event : '')))
	    .td(fInput('text', 'html', (($step=='edit') ? $html : 'text_input')))
	    .td(selectInput('newuser', $author_list, (($step=='edit') ? $user_name : ''), true, '', 'smd_prefalizer_newuser'))
	    .td(fInput('text', 'position', (($step=='edit') ? $position : '0')))
	    .td(fInput('submit', '', gTxt('add'), 'smallerbox'));
	echo '</tr>';
	echo endTable();
	echo '</form>';

	// The main list
	echo '<form method="post" name="longform" id="smd_prefalizer_longform" action="'.join_qs($qs).'">';
	echo startTable('list','','',8);
	echo tr(tda($newbtn, ' colspan="8"'));
	echo tr(
		column_head('name', 'name', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('name' == $sort) ? $dir : '').
		column_head('value', 'value', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('value' == $sort) ? $dir : '').
		column_head('type', 'type', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('type' == $sort) ? $dir : '').
		column_head(smd_prefalizer_gTxt('event'), 'event', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('event' == $sort) ? $dir : '').
		column_head(smd_prefalizer_gTxt('html'), 'html', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('html' == $sort) ? $dir : '').
		column_head(smd_prefalizer_gTxt('user'), 'user', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('user' == $sort) ? $dir : '').
		column_head(smd_prefalizer_gTxt('position'), 'position', 'smd_prefalizer', true, $switch_dir, $crit, $search_method, ('position' == $sort) ? $dir : '').
		column_head(smd_prefalizer_gTxt('actions'), 'actions', 'smd_prefalizer', false)
	);

	foreach ($thePrefs as $pref_row) {
		if ($step == 'edit' && $pref_row['name'] == $name && $pref_row['user_name'] == $user_name) {
			$btnSave = fInput('button', '', gTxt('Save'), 'publish', '', 'smd_prefalizer_save()');
			echo tr($headings);
			echo tr(
				td(fInput('text', 'name', $pref_row['name']), 70, '', 'smd_prefalizer_name')
				.td(text_area('value', '80', '220', $pref_row['val']), 220, '', 'smd_prefalizer_value')
				.td(selectInput('type', $smd_prefalizer_types, $pref_row['type']), 60, '', 'smd_prefalizer_type')
				.td(fInput('text', 'pref_event', $pref_row['event']), 60, '', 'smd_prefalizer_event')
				.td(fInput('text', 'html', $pref_row['html']), 60, '', 'smd_prefalizer_html')
				.td(selectInput('user_name', $author_list, $pref_row['user_name'], true), 80, '', 'smd_prefalizer_user_name')
				.td(fInput('text', 'position', $pref_row['position']), 20, '', 'smd_prefalizer_position')
				.td($btnSave)
			, ' id="smd_prefalizer_edited"');
		} else {
			$btnEdit = '<a href="'.join_qs($qs).'&#38;step=edit&#38;name='.$pref_row['name'].'&#38;user_name='.$pref_row['user_name'].'">[' . gTxt('edit') . ']</a>';
			$btnDel = smd_prefalizer_can_delete($pref_row['name']) ? '<a href="'.join_qs($qs).'&#38;step=smd_prefalizer_delete&#38;name='.$pref_row['name'].'&#38;user_name='.$pref_row['user_name'].'" onclick="return confirm(\''.smd_prefalizer_gTxt('delete_confirm', array("{name}" => $pref_row['name'], "{user_name}" => (($pref_row['user_name']=='') ? smd_prefalizer_gTxt('all_users') : $pref_row['user_name'] ) )).'\');">[' . gTxt('delete') . ']</a>' : '';
			echo tr(
				td($pref_row['name'],70)
				.td($pref_row['val'], 220)
				.td(ucfirst($smd_prefalizer_types[$pref_row['type']]))
				.td($pref_row['event'])
				.td($pref_row['html'])
				.td($pref_row['user_name'])
				.td($pref_row['position'])
				.td($btnEdit.' '.$btnDel, 100)
			, ' class="data"');
		}
	}

	echo endTable();
	echo '</form>';
	echo n.nav_form($smd_prefalizer_event, $page, $numPages, $sort, $dir, $crit, $search_method);
	echo n.pageby_form($smd_prefalizer_event, $pageby);
}

// -------------------------------------------------------------
function smd_prefalizer_search_form($crit, $method) {
	$methods =	array(
		'name' => gTxt('name'),
		'value' => gTxt('value'),
		'type' => gTxt('type'),
		'event' => smd_prefalizer_gTxt('event'),
		'html' => smd_prefalizer_gTxt('html'),
		'user' => smd_prefalizer_gTxt('user'),
		'position' => smd_prefalizer_gTxt('position'),
	);

	return search_form('smd_prefalizer', 'smd_prefalizer_list', $crit, $methods, $method, 'name');
}

// -------------------------------------------------------------
function smd_prefalizer_change_pageby() {
	setcookie('smd_prefalizer_pageby', gps('qty'));
	smd_prefalizer_list('');
}

function smd_prefalizer_can_delete($name) {
	$protected_events = array('admin', 'comments', 'css', 'custom', 'discuss', 'feeds', 'publish');
	$row = safe_row('*', 'txp_prefs', "name='$name'");
	return (in_array($row['event'], $protected_events) && empty($row['user_name'])) ? false : true;
}

function smd_prefalizer_add($msg='') {
	global $smd_prefalizer_event;

	pagetop(smd_prefalizer_gTxt('tab_name'), $msg);
	echo 'ADD';
}

function smd_prefalizer_save($msg='') {
	global $smd_prefalizer_event;

	extract(doSlash(psa(array('name', 'newname', 'value', 'type', 'pref_event', 'html', 'user_name', 'newuser', 'position'))));
	$ret = false;
	$msg = '';

	// State machine-esque decision tree
	$exists = safe_row('name, user_name', 'txp_prefs', "name = '$newname' AND user_name = '$newuser'");
	if (empty($name)) {
		// Insert new
		if ($exists) {
			$msg = array(smd_prefalizer_gTxt('exist_already', array("{name}" => $newname)), E_WARNING);
			$_POST['step'] = 'edit';
		} else {
			$ret = safe_insert('txp_prefs', "prefs_id=1, name='$newname', val='$value', type='$type', event='$pref_event', html='$html', position='$position', user_name='$newuser'");
			if ($ret === false) {
				$msg = smd_prefalizer_gTxt('create_failed', array("{name}" => $newname));
			} else {
				$msg = smd_prefalizer_gTxt('create_ok', array("{name}" => $newname));
			}
		}

	} else if ($name == $newname) {
		// Update
		if ($user_name == $newuser) {
			// Direct update
			if ($exists) {
				$ret = safe_update('txp_prefs', "name='$newname', val='$value', type='$type', event='$pref_event', html='$html', position='$position'", "name='$name' AND user_name='$user_name'");
				if ($ret === false) {
					$msg = smd_prefalizer_gTxt('save_failed', array("{name}" => $newname));
				} else {
					$msg = smd_prefalizer_gTxt('save_ok', array("{name}" => $newname));
				}
			} else {
				$msg = smd_prefalizer_gTxt('exist_not', array("{name}" => $name));
			}
		} else {
			// Renamed user
			if ($exists) {
				$msg = array(smd_prefalizer_gTxt('exist_already', array("{name}" => $newname)), E_WARNING);
				$_POST['step'] = 'edit';
				$_POST['name'] = $name;
				$_POST['user_name'] = $user_name;
			} else {
				$ret = safe_update('txp_prefs', "name='$newname', val='$value', type='$type', event='$pref_event', html='$html', position='$position', user_name='$newuser'", "name='$name' AND user_name='$user_name'");
				if ($ret === false) {
					$msg = smd_prefalizer_gTxt('save_failed', array("{name}" => $newname));
				} else {
					$msg = smd_prefalizer_gTxt('save_ok', array("{name}" => $newname));
				}
			}
		}

	} else {
		// Update and rename
		if ($user_name == $newuser) {
			// Renamed update
			if ($exists) {
				$msg = smd_prefalizer_gTxt('exist_already', array("{name}" => $newname));
			} else {
				$ret = safe_update('txp_prefs', "name='$newname', val='$value', type='$type', event='$pref_event', html='$html', position='$position'", "name='$name' AND user_name='$user_name'");
				if ($ret === false) {
					$msg = smd_prefalizer_gTxt('save_failed', array("{name}" => $newname));
				} else {
					$msg = smd_prefalizer_gTxt('save_ok', array("{name}" => $newname));
				}
			}
		} else {
			// Renamed update and user
			if ($exists) {
				$msg = array(smd_prefalizer_gTxt('exist_already', array("{name}" => $newname)), E_WARNING);
				$_POST['step'] = 'edit';
				$_POST['name'] = $name;
				$_POST['user_name'] = $user_name;
			} else {
				$ret = safe_update('txp_prefs', "name='$newname', val='$value', type='$type', event='$pref_event', html='$html', position='$position', user_name='$newuser'", "name='$name' AND user_name='$user_name'");
				if ($ret === false) {
					$msg = smd_prefalizer_gTxt('save_failed', array("{name}" => $newname));
				} else {
					$msg = smd_prefalizer_gTxt('save_ok', array("{name}" => $newname));
				}
			}
		}
   }

	smd_prefalizer_list($msg);
}

function smd_prefalizer_delete($msg='') {
	global $smd_prefalizer_event;

	extract(doSlash(gpsa(array('name', 'user_name'))));
	$ret = false;
	$rs = safe_row('*', 'txp_prefs', "name = '$name' AND user_name = '$user_name'");
	if ($rs && smd_prefalizer_can_delete($name)) {
		extract($rs);
		$ret = safe_delete('txp_prefs', "name = '$name' AND user_name='$user_name'");
	}
	if ($ret === false) {
		smd_prefalizer_list(smd_prefalizer_gTxt('delete_failed', array("{name}" => $name)));
	} else {
		smd_prefalizer_list(smd_prefalizer_gTxt('delete_ok', array("{name}" => $name)));
	}
}

// ------------------------
// Plugin-specific replacement strings - localise as required
function smd_prefalizer_gTxt($what, $atts = array()) {
	$lang = array(
		'actions' => 'Actions',
		'all_users' => 'all users',
		'create_failed' => 'Pref {name} NOT created',
		'create_ok' => 'Pref {name} created',
		'delete_confirm' => 'Really delete pref {name} ({user_name})?',
		'delete_failed' => 'Pref {name} NOT deleted',
		'delete_ok' => 'Pref {name} deleted',
		'exist_already' => 'Pref {name} already exists. Choose another name/user',
		'exist_not' => 'Cannot update: pref {name} does not exist',
		'event' => 'Event',
		'html' => 'Input control',
		'new' => 'New pref',
		'position' => 'Position',
		'save_failed' => 'Pref {name} NOT saved',
		'save_ok' => 'Pref {name} saved',
		'tab_name' => 'Prefalizer',
		'user' => 'User',
	);
	return strtr($lang[$what], $atts);
}