<?php
/**
 * These Premium Data Licence Terms, together with our General Terms and
 * Conditions, apply to your (and your End Users?) use of Premium Data. In the
 * event of any inconsistency between these Premium Data Licence Terms and our
 * General Terms and Conditions, these Premium Data Licence Terms will prevail
 * as regards your use of Premium Data.
 *
 * Please note that our General Terms and Conditions contain provisions which
 * limit our liability to you. Our General Terms and Conditions also set out
 * the definitions used in these Premium Data Licence Terms.
 *
 * 1	GRANT OF LICENCE
 *
 * In consideration of your agreeing to pay the Data Licence Fees, we grant you
 * a non-exclusive, non-transferable licence to use the Premium Data in
 * conjunction with Relevant Software on the terms of this licence.
 *
 * 2	SCOPE OF LICENCE
 *
 * This agreement is granted for the number of Instances set out in your Order
 * or as otherwise agreed by us from time to time.
 *
 * An Instance means a single installation of Relevant Software for a single
 * End User. So (by way of example):
 *
 * a.	if Relevant Software is installed in two or more virtual servers on the
 * same physical server, each installation of Relevant Software will be a
 * separate Instance;
 *
 * b.	if the same server (whether physical or virtual) has two different
 * installations of Relevant Software on it, each will be a separate Instance; and
 *
 * c.	if the same installation of Relevant Software is made available to two
 * different End Users, that will constitute two Instances.
 *
 * You (and any End Users) are also entitled to make a reasonable number of
 * back-up copies of any Relevant Software.
 *
 * 3	PERMITTED USE
 *
 * You are only permitted to use the Premium Data for purposes of real-time
 * device property detection using Relevant Software.
 *
 * All other use without our consent is prohibited, including without
 * limitation using the Premium Data for offline data analysis, for the purpose
 * of creating a database of device properties, or for providing any hosted or
 * cloud-based services to any person. If you require a licence for offline
 * data analysis or hosted or cloud-based services then we may (at our
 * discretion) allow this upon payment of further Data Licence Fees.
 *
 * 4	DURATION OF LICENCE
 *
 * This agreement will continue for the Initial Term as set out in your Order
 * or as otherwise agreed by us from time to time. It will then automatically
 * renew for Renewal Terms of the same length as the Initial Term (or as
 * otherwise set out in your Order or as otherwise agreed by us from time to
 * time) unless terminated by either you or us giving the other not less than
 * three months? notice of termination, such notice to expire on the last day
 * of the Initial Term or a Renewal Term.
 *
 * This is subject to the Termination provisions in condition 10 of the General
 * Terms and Conditions.
 *
 * 5	DATA LICENCE FEES
 *
 * You must pay the Data Licence Fees on or before the start of the Initial
 * Term or the applicable Renewal Term, using the renewal payment interface on
 * our website.
 *
 * We may revise the Data Licence Fees for the next Renewal Term by giving you
 * not less than four months? notice in writing prior to the start of that
 * Renewal Term.
 *
 * If you fail to pay the Data Licence Fees in full when due, your licence to
 * use the Premium Data and your access to our website (other than to pay the
 * outstanding Data Licence Fees) will automatically be suspended.
 *
 * 6	END USERS
 *
 * You may make the Premium Data available to an End User as part of any
 * Relevant Software that you supply to that End User.
 *
 * You are responsible for ensuring that the End User uses the Premium Data
 * strictly in accordance with the terms of this licence, and that the End User
 * only uses the number of Instances that you allocate to it (which must, in
 * any event, be within your permitted number of Instances under this licence).
 * If an End User exceeds that number of Instances then you will be deemed to
 * have purchased the excess number of instances (Excess Instances) at the time
 * of your most recent Order for Premium Data or (if later) the start of the
 * current Renewal Term (Deemed Order Date), and you will pay us on demand the
 * additional Licence Fees in respect of those Excess Instances from the Deemed
 * Order Date. You agree that this is a reasonable pre-estimate of our loss
 * arising from your breach and not a penalty.
 *
 * For other ways in which your customers can make use of Premium Data in any
 * Relevant Software, see our Licence Key page.
 *
 * 7	IDENTIFICATION OF THE PREMIUM DATA
 *
 * Please note that we apply unique identifying data to the Premium Data as
 * supplied to you, to identify you as the licensee for that Premium Data that
 * has been supplied to you. We reserve the right to charge additional Data
 * Licence Fees if we become aware that Premium Data bearing the identifying
 * data assigned to you has been made available other than in accordance with
 * the terms of this agreement.
 *
 * 8	UPDATES
 *
 * This licence entitles you to any updates to the Premium Data released by us
 * during the term of this licence. The 51D Software will check our servers at
 * regular intervals for updates. You may also download the latest version of
 * the Premium Data from our website.
 *
 * 9	YOUR ACCOUNT
 *
 * You will maintain an account on our website at all times during the term of
 * this licence. You must not share your login details for your account with
 * anyone else, and we reserve the right to suspend access to your account if
 * we suspect that it is being used by anyone other than you or is being
 * misused in any other way.
 *
 * Copyright 51Degrees Mobile Exports Limited 2012 - All Rights Reserved
 */
/**
 * This Source Code Form is subject to the terms of the Mozilla Public License,
 * v. 2.0.
 *
 * If a copy of the MPL was not distributed with this file, You can obtain one
 * at http://mozilla.org/MPL/2.0/.
 *
 * This Source Code Form is "Incompatible With Secondary Licenses", as defined
 * by the Mozilla Public License, v. 2.0.
 */
/*
	Plugin Name: 51Degrees.mobi Mobile Device Detector
	Plugin URI: http://51degrees.mobi/Support/Documentation/PHP/Wordpress.aspx
	Description: Uses the 51Degrees.mobi.php solution to find out what device the end user is viewing your site on. You can access the variable using $_51D. See the documentation for full information on how to use.
	Version: 2.1.12.1
	Author: 51Degrees.mobi
	Author URI: http://51Degrees.mobi
	License: This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
*/


$dir = dirname(__FILE__);
@include_once($dir.'/51Degrees/51Degrees.mobi.php');

@include_once($dir.'/51Degrees/51Degrees.mobi.metadata.php');

if (get_option('51d_enable_udp'))
	@include_once($dir.'/51Degrees/51Degrees.mobi.usage.php');


/**
	Prints the javascript essential to get the 51Degrees.mobi admin menu to work.
*/
function _51d_print_javascript() {
	?>
<script type="text/javascript" src="<?php echo plugins_url()."/51degreesmobi/51Degrees/51DUpdate.js"; ?>" ></script>
<script type="text/javascript" >
	// toggles if the advanced section is visible
	function toggleAdvanced() {
		var adv_prop = document.getElementById('advanced_properties');
		var adv_toggle = document.getElementById('adv_toggle');
		if(adv_prop.style.display != 'none')
		{
			adv_prop.style.display = 'none';
			adv_toggle.value = 'Show';
		}
		else
		{
			adv_prop.style.display = 'block';
			adv_toggle.value = 'Hide';
		}return false;
	}

	// toggles if a rows is active in the advanced property section.
	function toggleRow(ev) {
		var valuesSelect = document.getElementById(ev.srcElement.id.replace('check_', '51d_cond_'));
		if(valuesSelect != null)
		{
			if(ev.srcElement.checked)
				valuesSelect.removeAttribute("disabled");
			else
				valuesSelect.disabled = "disabled";
		}
		else
			console.log('no values object with that name.');
	}

	function updateKey() {
		var key = (document.getElementById('_51d_license_text').value);
		var url = "<?php echo add_query_arg('51D_LicenseKey', 'KEY_HERE'); ?>";

		var keyPost = new XMLHttpRequest();
		keyPost.onreadystatechange = function () {
			if(keyPost.readyState == 4 && keyPost.status == 200) {
				getDataUpdate();
			}
		}
		keyPost.open('GET', url.replace("KEY_HERE", key, true));
		keyPost.send();
	}
	
	function getDataUpdate() {
		document.getElementById("51d_message_update").style.display = "inline";
		document.getElementById("51d_admin_panel").style.display = "none";
		
		scrollTo(0, 0);
		
		fiftyone_degrees_update_location = "<?php echo plugins_url()."/51degreesmobi/51Degrees/51DUpdate.php"; ?>";
		fiftyone_degrees_start_updates();
		_request.onload = updatePendingFinish;
		
	}
	
	function getUpdateKey() {
		return document.getElementById('_51d_license_text').value;
	}
	
	function updatePendingFinish() {
		document.getElementById("51d_update_finished").style.display = "inline";
		if(_request.responseText === undefined || _request.responseText.length == 0) {
				var message = "The update procedure could not be launched, probably because the server does not support flushing.\n";
				message += "The update can be downloaded manually from ";
				message += "<a href=\"https://51degrees.mobi/Products/Downloads/Premium.aspx?LicenseKeys="+getUpdateKey()+"&Type=WordPress&Download=True\">51Degrees.mobi</a>.";
			}
		else
			var message = "Updating has finished. Press to go back to the admin page."
			
		document.getElementById("51d_update_status").innerHTML = message;
	}
	
	function updateFinished() {
		window.location.reload();
	}

	function checkRedirectText() {
		if(document.getElementById("theme_list").value == "_redirect")
			document.getElementById("redirect_text").style.display = "inline";
		else
			document.getElementById("redirect_text").style.display = "none";
	}
</script>
<?php
}

function _51d_submit_settings()
{
	update_option('51d_enable_udp', isset($_POST['51d_enable_udp']));
}

function _51d_submit_filter() {
	$updatedFilter = array();

	if(isset($_POST['_51D_Theme'])) {
		if($_POST['_51D_Theme'] == '_redirect')	{
			$updatedFilter['action'] = 'redirect';
			$updatedFilter['url'] = $_POST['_51D_RedirectionUrl'];
			unset($_POST['_51D_RedirectionUrl']);
		}
		else {
			$updatedFilter['action'] = 'theme';
			$updatedFilter['theme'] = @get_theme($_POST['_51D_Theme']);
		}
		unset($_POST['_51D_Theme']);
	}

	$conditions = array();
	foreach($_POST as $key => $value) {
		if(substr($key, 0, 10) == "_51d_cond_")
			$conditions[str_replace("_51d_cond_", "", $key)] = $value;
	}

	$updatedFilter['conditions'] = $conditions;

	$filters = get_option('51DFilterStore');
	if($filters == false)
		$filters = array();

	if($_POST['_51D_FilterName'] != $_POST['_51D_SubmitFilter']) { // renaming filter
		$newFilters = array();
		foreach($filters as $key => $filter) {
			if($key == $_POST['_51D_SubmitFilter'])
				$newFilters[$_POST['_51D_FilterName']] = $updatedFilter;
			else
				$newFilters[$key] = $filter;
		}
		$filters = $newFilters;
	}
	else
		$filters[$_POST['_51D_FilterName']] = $updatedFilter;

	update_option('51DFilterStore', $filters);
	header('Location: '.add_query_arg( 'filter', $_POST['_51D_FilterName'] ));
}

function _51d_print_admin_panel() {
	if(file_exists(dirname(__FILE__).'/51Degrees/51Degrees.mobi.php'))
	{
		_51d_print_javascript();

		?>
		
		<div id="51d_admin_panel" class="wrap">
			<h2>51Degrees.mobi Device Detection</h2>
      <form method="GET" >
        <input type="hidden" name="page" value="<?php echo $_GET['page']; ?>" />
        <input type="hidden" name="_51D_NewFilter" value="true" />
        <input class="button-primary" type="submit" value="Create New Rule" />
      </form>
			<form id="_51DFilterMenu" class="update-nav-menu" method="post">
				<?php
					_51d_print_filters();
					echo '</form>';
					echo '<br/>';
          _51d_print_documentation();
          echo '<br />';
					_51d_print_settings();
					echo '<br />';
					_51d_print_license_section();
				?>
			</form>
		</div>
		<?php
		_51d_print_update_messages();
	}
	else
	{
		?>
		<div id="51d_admin_panel" class="wrap">
			<h2>51Degrees.mobi Device Detection</h2>
			<p>51Degrees.mobi Device Detection cannot run as the plugin is unable to write files. This is necessary to create the data files needed for
				detection and to install mobile friendly themes. Please enable file writing, or unzip the 51Degrees data file at 
				'<?php echo dirname(__FILE__).'/51Degrees.zip' ?>' to '<?php echo dirname(__FILE__); ?>' manually.
			</p>
			</div>
		<?php
	}
}

/**
	Creates a new filter, saves with the other filters and returns its name.
*/
function _51d_create_filter() {
	$filters = get_option('51DFilterStore');
	if($filters == false)
		$filters = array();

	$newFilter = array();
	$filterCount = count($filters);
	do {
		$filterCount++;
		$name = 'Rule '.$filterCount; // making sure that a filter with a new name is generated.
	} while(isset($filters[$name]));

	$newFilter['url'] = false;
	$filters[$name] = $newFilter;
	update_option('51DFilterStore', $filters);
	return $name;
}

function _51d_update_settings() {
	try {
		update_option("enable_51DUDP", $_REQUEST['enable_51DUDP'] == true);

		?>
			<div id="message" class="updated fade">
				<p>Options saved.</p>
			</div>

		<?php
	}
	catch (Exception $e) {
		?>

			<div id="message" class="updated fade">
				<p>Failed to save options. Error: <?php echo $e->get_message(); ?></p>
			</div>

		<?php
	}
}

function _51d_print_basic_properties($filter) {
	?>
	<div id="_51DDeviceConditions" style="border:1px solid; background-color:#ffffff; padding: 3px;">
	<?php
		global $_51d_meta_data;

		if (isset($filter['conditions']))
			$conditions = $filter['conditions'];
		else
			$conditions = array();

		// add a key and value here to add a property to the default field.
		$properties = array(
			"Mobile" => "IsMobile",
			"Small Screen Phone" => "IsSmallScreen",
			"SmartPhone" => "IsSmartPhone",
			"Tablet" => "IsTablet",
			"Console" => "IsConsole",
			"EReader" => "IsEReader");

		$propertyDescriptions = array(
			"IsMobile" => "Indicates that the device's primary data connection is wireless and is designed to operate mostly from battery power (ie a mobile phone, smart phone or tablet etc)",
			"IsSmallScreen" => "Is a mobile device with a screen size smaller than 2 1/2 inches.",
			"IsSmartPhone" => "Is a mobile device with a screen size larger then 2 1/2 inches running a modern smart phone operating system including Android, iOS, BlackBerry or Windows Phone.",
			"IsTablet" => "The manufacturer of the device sells the device primarily as a tablet.",
			"IsConsole" => "Indicates if the device is neither a phone or a computer/tablet (ie a games console or television).",
			"IsEReader" => "Indicates if the device is an e-reader.");

		// this array will contain default properties that are not in the current data set
		$absentProp = array();

		foreach($properties as $name => $property) {
			if(isset($_51d_meta_data[$property])) {
				echo '<input type="checkbox" value="True" name="_51d_cond_'.$property.'"';

				if(isset($conditions[$property]) && $conditions[$property] == true)
					echo 'checked="checked"';

				echo '/> '.$name.'<p class="description">'.$propertyDescriptions[$property].'</p>';
			}
			else
				$absentProp[$name] = $property;
		}

		if(count($absentProp) > 0)
		{
	?>
		<br />
		<div id="disabled_properties" style="background-color: #F3F781;border-color: #000000;border-width:0.1em;border-style:solid; padding: 1em;">
			<p style="font-size:1.2em; font-weight:bold; color: red;">
				<a href="http://51degrees.mobi/Purchase/Wordpress.aspx" title="Upgrade to enable additional features." target="_blank">Enable these Options</a>
			</p>

	<?php

		foreach($absentProp as $name => $property) {
			echo '<input type="checkbox" disabled="disabled" /> '.$name;
			echo '<p class="description">'.$propertyDescriptions[$property].'</p>';
		}
	}
}

function _51d_print_license_section() {
global $_51d_meta_data;
	?>
    <div id=u"licensing" style="margin-left: 12px">
		<h3>Upgrade Device Data <span style="font-weight:normal;">(BETA)</span></h3>
		<p>If you have <a href="http://51degrees.mobi/Purchase/Wordpress.aspx" target="_blank" >purchased</a> a licence key for device data paste it into the text box below and select Update. This process requires your PHP environment to support file updates and outbound web connectivity.
		</p>
	<?php
		$license = get_option('_51d_license_text');
			
	?>
        Licence key: <input id="_51d_license_text" style="width:70%" type="text"
			value="<?php if($license) echo $license; else echo "Enter a licence key here."; ?>" />
        <br />
		<button id="51d_update_button" name="_51d_get_update" type="button" class="button-primary" onclick="updateKey()">Automatically Update</button>
		<?php if($license)
			echo "<a href='https://51degrees.mobi/Products/Downloads/Premium.aspx?LicenseKeys=$license&Type=PHP&Download=True'>Download Upgraded Plugin</a>";
		?>
		<p>You can also copy the licence key into the 
		<a href="https://51degrees.mobi/Products/Downloads/Premium.aspx" target="_blank">51Degrees.mobi Downloads page</a>
		and download an upgraded plugin preloaded with current device data. You must delete the currently installed version of this plugin before
		uploading the upgraded one. <a href="http://51degrees.mobi/Support/Documentation/PHP/Wordpress.aspx" target="_blank">Learn More</a></p>
		<p>
        Data type: <i><?php echo $_51d_meta_data["DatasetName"]; ?></i> Published: <i><?php echo $_51d_meta_data["Date"]; ?></i>
        </p>
    </div>
    <?php
}

function _51d_print_update_messages() {
	?>
	<div id="51d_message_update" style="display:none;">
        <div style="height: 40px;"></div>
		51Degrees.mobi Device Data now updating. This may take a few minutes. Please leave this page open.
		<p>
			<div id="update_message"></div>
		</p>
		<div id="51d_update_finished" style="display:none;" >
			<div id="51d_update_status"></div> <br />
			<button type="button" class="button-primary" onclick="updateFinished()">Back</button>
		</div>			
	</div>
	<?php
}

function _51d_print_filter_tab($index, $filters) {
	global $keys;
	$key = $keys[$index];
	$filter = $filters[$key];

	?>

    <div id="_51DFilterTab" class="menu-edit" style="border-color: #DFDFDF;
	-webkit-border-radius: 3px; border-radius: 3px; border-width: 1px; border-style: solid;">

		<div id="nav-menu-header">

			<table style="width:100%; height:100%; border-spacing: 0;">
				<th style="width:20%"/>
				<th style="width:80%"/>
				<tr>
					<td>
					</td>
					<td>
						<h3 style="font-size:1.5em">Device Type</h3>
					</td>
				</tr>
				<tr>
					<td>
					  When a device is:
					</td>
					<td>
						<h3>Basic Properties</h3>
            <p>A device that matches any one of these rules will be actioned upon.<p>
						<?php _51d_print_basic_properties($filter); ?>
					</td>
				</tr>
				<tr>
					<td>
						Or has all of the selected features:
					</td>
					<td>
						<div>
              <h3 style="float: left" >Advanced Properties </h3>
              <!-- hellooo -->
               <input id="adv_toggle" class="button-primary" type="button" onclick="toggleAdvanced()" value="Show" style="margin: 0.8em; margin-bottom: 1em;" />
            </div>
						<div id="advanced_properties" style="display:none">
            <p>A device must match all of the values selected here to redirected.<p>

							<div id="advanced_properties_table" style="height:400px; border-color: #000000; border: 1px solid; overflow-y:scroll; background-color:#ffffff;">
								<!-- makes the property values appear more presentable -->
								<style type="text/css">
									.maxWidth{ width: 100%; }
								</style>

								<table style="width: 99%; border-spacing: 0px">
									<th style="background-color:#dddddd;">Enabled</th>
									<th style="width: 50%; background-color:#dddddd;">Property</th>
									<th style="width: 50%; background-color:#dddddd;">Value</th>
									<?php
										global $_51d_meta_data;
										if(isset($_51d_meta_data)) {
											$toggle = false;
											foreach($_51d_meta_data as $dataKey => $data) {
                                                if($dataKey == 'DatasetName' || $dataKey == 'Date')
													continue;
												if($toggle)
													echo '<tr style="background-color:#dddddd;">';
												else
													echo '<tr style="background-color:#ffffff;">';
												$toggle = !$toggle;

												echo '<td><input id="check_'.$dataKey.'" type="checkbox" onclick="toggleRow(event)"/></td>';
												echo '<td>'.$dataKey.' <img title="'.$data['Description'].'" src="'.plugin_dir_url( $file ).'51degreesmobi/help.png" /></td>';
												echo '<td>';
													echo '<select id="51d_cond_'.$dataKey.'" class="maxWidth" disabled="disabled">';
														foreach ($data['Values'] as $valueKey => $value) {
															echo '<option value="'.$valueKey.'">'.$valueKey.'</option>';
														}
													echo '</select>';
												echo '</td>';
											echo '</tr>';
											}
										}
										else
											echo '<td>No properties found. Your 51Degrees.mobi installation maybe missing some files.</td>';

									?>
								</table>
							</div>
						</div>
					</td>
				</tr>
				<tr>
					<td></td>
					<td>
						<h3 style="font-size:1.5em">Action</h3>
					</td>
				</tr>
				<tr>
					<td>Then change theme to</td>
					<td>
            <p>Choose what action to use when a device has been matched. A device can be redirected to
            any webpage (even beyond this site) or served any theme you have installed.<p>
						<select id="theme_list" name="_51D_Theme" style="width:40%" onclick="checkRedirectText()">
							<?php
								// sort themes alphabetically
								$themes = array();
								foreach(@get_themes() as $theme) {
									$themes[] = $theme;
								}
								asort($themes);
								foreach($themes as $theme) {
									echo '<option';
									if(isset($filter['theme']['Name']) && $filter['theme']['Name'] == $theme['Name'])
										echo ' selected="selected"';
									echo ' value="'.$theme['Name'].'">';
									echo $theme['Name'];
									echo '</option>';
								}

								echo '<option value="_redirect"';
								if(isset($filter['action']) && $filter['action'] == 'redirect')
									echo ' selected="selected"';
								echo '>[Redirect to url]</option>';
							?>
						</select>
						<input id="redirect_text" type="text" name="_51D_RedirectionUrl" style="width:40%;display:none" <?php if(isset($filter['url'])) echo ' value="'.$filter['url'].'"'; ?> />
						<script text="javascript">checkRedirectText();</script>
						<p style="font-size:1.2em; font-weight:bold; color: red;">
							<a href="http://51degrees.mobi/Purchase/Wordpress/Themes.aspx" target="_blank" title="Find more mobile aware themes">Get more Themes</a>
						</p>
					</td>
				</tr>
				<tr>
					<td></td>
				</tr>
			</table>
			<button name="_51D_SubmitFilter" class="button-primary" type="submit" value="<?php echo $key; ?>">Save Rule</button>
			<a href="
				<?php echo add_query_arg('DeleteFilter', $key); ?>" onclick="return confirm('Are you sure you want to delete this rule?')">Delete
			</a>

			<div style="height:10px" ></div>
		</div>
    </div>
    <?php
}

function _51d_print_filters() {
	echo '<div id="_51DFilterTabs">';

	$filters = get_option('51DFilterStore');

	if ($filters == false || count($filters) == 0)
		echo 'No rules have been created. Click the button above to create your first redirection rule.';
	else {
		$keys = array_keys($filters);
		$GLOBALS['keys'] = &$keys;
		if(isset($_GET["filter"]) && isset($filters[$_GET["filter"]]))
			$selectedTab = $_GET["filter"];
		else
			$selectedTab = $keys[0];
	?>
    <p>
    Use this screen to create rules that control if devices are sent to another page or served a different theme based
    on what kind of devices they are. Multiple rules can be created to do different things with different devices.
    </p>
    <div class="nav-tabs-nav" style="margin-top: 0px; margin-right: 20px; margin-bottom: 0px; margin-left: 20px;">
		<div style="nav-tabs-wrapper" style="padding: 0px; margin-right: -268px; margin-left: 0px; ">

			<script type="text/javascript">
				function dragOver(ev) {
					ev.toElement.style.width = "100px";
				}

				function dragStart(ev) {
					ev.toElement.style.display = "hidden";
				}
			</script>
        <?php

		foreach($keys as $index => $key) {
			if($selectedTab == $key) {
				echo '<span draggable="true" class="nav-tab nav-tab-active">';

				if($index != 0)
					echo '<a title="Decrease Priority" style="text-decoration: none" href="'.add_query_arg('ShiftFilter', $keys[$index - 1]) .'"><strong>&lt;</strong></a>    ';

				echo '<input style="height:18px; width:80px" type="text" name="_51D_FilterName" value="'.$key.'"/>';

				if($index == count($keys) - 2)
					echo '    <a title="Increase Priority" style="text-decoration: none" href="'.add_query_arg('ShiftFilter', '_LAST') .'"><strong>&gt;</strong></a>';
				else if($index < count($keys) - 2)
					echo '    <a title="Increase Priority" style="text-decoration: none" href="'.add_query_arg('ShiftFilter', $keys[$index + 1]) .'"><strong>&gt;</strong></a>';

				echo '</span>';
				$keyIndex = $index;
			}
			else {
				echo '<a href="'.add_query_arg('filter', $key).'" draggable="true" ondragstart="dragStart(event)" class="nav-tab">'.$key.'</a>';
			}
			echo '<div class="tab_spacers" style="width:5px; display:inline-block" ondragover="dragOver(event)"></div>';
		}

		echo '</div>';
		echo '</div>';//end of tabs
		_51d_print_filter_tab($keyIndex, $filters);
	}

	echo '</div>';
}

function _51d_print_settings() {
	if(get_option('enable_51DUDP'))
		$udp_enabled = 'checked="checked"';
	?>

        <div id="_51DGlobalSettings" style="margin-left: 12px" >
			<h3>Global Settings</h3>
			<p>These settings control 51Degrees.mobi Device Detection on all pages in the site.</p>
			<form id="_51DGlobalSettingsMenu" method="post">

				<p>
					<input type="checkbox" name="51d_enable_udp" <?php if(get_option('51d_enable_udp')) echo 'checked="checked"'; ?> />
					Share usage data with 51Degrees.mobi. <a href="http://51degrees.mobi/Support/FAQs/UsageData.aspx">Learn More</a>
				</p>
				<p>
					<button name="_51D_SubmitGlobalSettings" class="button-primary" type="submit">Submit</button>
				</p>
			</form>
		</div>
	<?php
}

function _51d_print_documentation() {
  ?>
    <div style="margin-left: 12px" >
    <h3>Documentation</h3>
    <p>For assistance, refer to help tab at the top of this page. You can also use the tooltips, or see
    our <a href="http://51degrees.mobi/Support/Documentation/PHP/Wordpress.aspx">user guide</a> and 
    <a href="http://51degrees.mobi/Support/Forum.aspx">support forum</a>.</p>
    </div>
    <?php
}

function _51d_add_admin_menu() {
	$options_page = add_menu_page('51Degrees.mobi','51Degrees.mobi','manage_options', __FILE__,'_51d_print_admin_panel');

	add_action('load-'.$options_page, '_51d_admin_menu_preprocess');
}

function _51d_admin_menu_preprocess() {

	//A new filter is to be created
	if(isset($_GET['_51D_NewFilter'])) {
		$newFilter = _51d_create_filter();
		//redirect to new filter location
		$newUrl = remove_query_arg('filter');
		header( 'Location:'.str_replace('_51D_NewFilter=true', 'filter='.$newFilter, $newUrl)) ;
		exit;
	}

	if(isset($_GET["51D_LicenseKey"])) {
		update_option('_51d_license_text', $_GET["51D_LicenseKey"]);
		file_put_contents(dirname(__FILE__)."/51Degrees/license.lic", $_GET["51D_LicenseKey"]);
		exit;
	}
	
	if(isset($_POST['_51D_SubmitFilter'])) {
		_51D_Submit_Filter();
		exit;
	}

	if(isset($_POST['_51D_SubmitGlobalSettings'])) {
		_51d_submit_settings();
	}

	if(isset($_GET['ShiftFilter']) && isset($_GET['filter'])) {
		$filters = get_option('51DFilterStore');

		// The key of the filter moved by the user
		$insertedFilterKey = $_GET['filter'];

		// The key of the filter that is being displaced by the insertedFilter
		$shiftedFilterKey = $_GET['ShiftFilter'];

		if($shiftedFilterKey != null && $insertedFilterKey != null) {
			$newFilters = array();
			foreach($filters as $key => $filter) {
				if($key == $insertedFilterKey)
					continue;
				if($key == $shiftedFilterKey)
					$newFilters[$insertedFilterKey] = $filters[$insertedFilterKey];
				$newFilters[$key] = $filters[$key];
			}
			if($shiftedFilterKey == '_LAST')
				$newFilters[$insertedFilterKey] = $filters[$insertedFilterKey];

			update_option('51DFilterStore', $newFilters);
			header('Location: '.remove_query_arg('ShiftFilter'));
		}
	}

	if(isset($_GET['DeleteFilter'])) {
		$filters = get_option('51DFilterStore');
		if($filters != false) {
			if(isset($filters[$_GET['DeleteFilter']])) {
				unset($filters[$_GET['DeleteFilter']]);
				update_option('51DFilterStore', $filters);
			}
		}
		$newUrl = remove_query_arg('DeleteFilter');
		header('Location: '.remove_query_arg('filter', $newUrl));
		exit;
	}

	// help section only supported in 3.3+
	global $wp_version;
	$version = (float)substr($wp_version, 0, 3);

	if($version >= 3.3) {

		// The POSTS have been dealt with, add help to options screen
		$screen = get_current_screen();

		// Add as many tabs as necessary
		$screen->add_help_tab( array(
			'id'	=> 'property_help_overview',
			'title'	=> __('Overview'),
			'content'	=> '<p><strong>' . __('Detection') . '</strong> - ' .
                  __('This plugin contains a small database capable of determining the requesting device\'s properties ' .
                     'extremely quickly using the finger prints (technically called useragents) sent by web browsers.') . '</p>' .
                     '<p><strong>' . __('Optimisation') . '</strong> - ' .
                  __('Knowledge of the requesting device\'s capabilities enables the theme to be tailored to the device, or ' .
                     'the request redirected to another web site. For example; rules can be defined to treat small screen ' .
                     'mobile devices, smartphones and tablets differently from each other. Adverts could be optimised for the ' .
                     'smaller screens, or content limited to the essential parts of a page.') . '</p>'
		) );

		$screen->add_help_tab( array(
			'id'	=> 'property_help_rules',
			'title'	=> __('Rules'),
			'content'	=> '<p>' . __(
						'At the top of the settings page are the rules tabs. Select Create Rule to add the first rule. Select ' .
						'the tab name to change it to something more meaningful to you.'
						) . '</p>' . '<p>' . __(
						'Select the + symbol to add additional rules.' 
						) . '</p>' . '<p>' . __(
						'Rules are evaluated in order from left to right. The first one which matches the requesting device ' .
						'is used to control the response.'
						) . '</p>'
		) );

		$screen->add_help_tab( array(
			'id'	=> 'property_help_device_type',
			'title'	=> __('Device Type'),
			'content'	=> '<p>' . __(
						'Below the Rules tabs are tick boxes for basic properties that can be used to adjust which types of ' .
						'devices will be affected by the rule. Selecting one or more of these property tick boxes associates ' .
						'the rule to the device type. For example; to apply a rule to Tablet devices only you would select the ' .
						'Tablet tick box and none of the others.'
						) . '</p>' . '<p>' . __(
						'Within the Advanced Properties section it is possible to customise the rule using more ' .
						'properties. For example; if you would like your rule to apply to devices with a screen resolution ' .
						'of 800x480 pixels then you would select the IsMobile, ScreenPixelsHeight and ScreenPixelsHeight ' .
						'tickboxes and set their Value boxes to True, 800 and 480 respectively.'
						) . '</p>'

		) );

		$screen->add_help_tab( array(
			'id'	=> 'property_help_action',
			'title'	=> __('Action'),
			'content'	=> '<p>' . __(
						'The action controls how the site responds to requests from matching devices.' .
						'Two possible actions are available:'
						) .	'</p>' . '<ol>' . '<li>' .  __(
						'Change the theme to one more suited to the requesting devices capabilities. For example; on a small ' .
						'screen devices removes less important content, or displays mobile optimised adverts.'
						) . '</li>' . '<li>' . __(
						'Redirect the request to another web site more suited to the device.'
						) . '</li>' . '</ol>' . '<p>' . __(
						'A drop down list in the Action area contains a list of all the installed themes. One of these can be ' .
						'chosen for use with the rule. Alternatively the [Redirect to url] option can be selected and a text ' .
						'box will appear to the right of the drop down list. This is where a new Url can be placed to redirect ' .
						'all requests from devices matching the rule.'
						) . '</p>'
		) );
		
		$screen->set_help_sidebar(
			__('<strong>For more information:</strong> 
			<p><a href="http://51degrees.mobi/Products/DeviceData.aspx" target="_blank">Overview</a></p>
			<p><a href="http://51degrees.mobi/Support/Documentation/PHP/Wordpress.aspx" target="_blank">Documentation</a></p>
			<p><a href="http://51degrees.mobi/Purchase/Wordpress.aspx" target="_blank">Upgrade Device Data</a></p>')
		);

	}
}

function _51d_unzip_data() {
    // set_time_limit(0);
	// $dir = dirname(__FILE__);
	// WP_Filesystem();
	// unzip_file($dir.'/51Degrees.mobi.php.zip', $dir);
}

function _51d_set_options() {
	// install themes
	$dir = dirname(__FILE__);
	$theme_directory = "$dir/themes/";
	if(WP_Filesystem())
	{
		$themes = glob($theme_directory . "*.zip");
		
		foreach($themes as $theme) {
			$targetdir = get_theme_root().'/';
			unzip_file($theme, $targetdir);
		}
	}
	add_option('51d_enable_udp', false);
}

function _51d_unset_options() {
	delete_option('51d_enable_udp');
	delete_option('51DFilterStore');
	delete_option('_51d_license_text');
}

function _51d_admin_init() {
    // $dir = dirname(__FILE__);
	// if(file_exists($dir.'/51Degrees/51Degrees.mobi.php') == false) {
        // // check if a premium key is available
		// _51d_unzip_data();
        // $license = get_option("_51d_license_text");
    // }
}

function _51d_loadTemplateFilters($current) {
	return _51d_loadFilters($current, 'Template');
}

function _51d_loadStylesheetFilters($current) {
	return _51d_loadFilters($current, 'Stylesheet');
}

function _51d_loadFilters($currentTheme, $tag) {
// only load themes on non admin pages
	if(!is_admin()) {
		//echo $currentTheme;
		//echo "Checking $tag";
		$theme = _51d_checkFilters();
		if(empty($theme))
			return $currentTheme;
		return $theme[$tag];
	}
	return $currentTheme;
}

function _51d_checkFilters() {
	// confirm that session is enabled for every request
	@session_start();
	// check if user has requested not to be switched
	if(isset($_SESSION['NO_SWITCH']) && $_SESSION['NO_SWITCH'] == true)
		return false;
	
	// check if the browser has been detected already
	if(isset($_SESSION['_51d_themeName']))
		return $_SESSION['_51d_themeName'];

	if(!isset($GLOBALS['_51d_themeName'])) {
		// get 51d data from global scope
		global $_51d;
		//checking device filters
		$filters = get_option('51DFilterStore');
		if($filters != false) {
			foreach($filters as $filter) {
				if(isset($filter['conditions'])) {
					$validConditions = true;
					// check all conditions
					foreach($filter['conditions'] as $key => $condition) {
						if($condition == 'True' && $_51d[$key] != $condition) {
							$validConditions = false;
							break;
						}
					}
					if($validConditions == true && isset($filter['action'])) {
						if($filter['action'] == 'theme') {
							//change theme
							$theme = @get_theme($filter['theme']['Title']);

							if(!empty($theme)) {
								$GLOBALS['_51d_themeName'] = $theme;
								$_SESSION['_51d_theme_name'] = $theme;
								return $theme;
							}
						}
						else if($filter['action'] == 'redirect' && isset($filter['url'])) {
							header('Location: '.$filter['url']);
							exit;
						}
						break;
					}
				}
			}
		} // no filters, stored, carry on

		$GLOBALS['_51d_themeName'] = false;
		$_SESSION['_51d_theme_name'] = false;
		return false;
	}
	else
		return $GLOBALS['_51d_themeName'];
}

// add_action('admin_init', '_51d_admin_init');
add_action('admin_menu', '_51d_add_admin_menu');
add_filter('template', '_51d_loadTemplateFilters');
add_filter('stylesheet', '_51d_loadStylesheetFilters');

register_activation_hook(__FILE__,'_51d_set_options');
register_deactivation_hook(__FILE__,'_51d_unset_options');

?>