/wp-content/plugins/simple-forum/library/sf-tags.php

<?php

/*

Simple:Press

Suggested tags

$LastChangedDate: 2010-03-26 16:38:27 -0700 (Fri, 26 Mar 2010) $

$Rev: 3818 $

*/



if (preg_match('#' . basename(__FILE__) . '#', $_SERVER['PHP_SELF']))

{

	die('Access Denied');

}



if ( $_GET['sfaction'] == 'tags_from_yahoo' ) {

	sf_suggest_yahoo_tags();

} elseif ( $_GET['sfaction'] == 'tags_from_tagthenet' ) {

	sf_suggest_ttn_tags();

} elseif ( $_GET['sfaction'] == 'tags_from_local_db' ) {

	sf_suggest_local_tags();

}



die();



function sf_suggest_local_tags()

{

	global $wpdb;



	# Send good header HTTP

	status_header(200);

	header("Content-Type: text/javascript; charset=" . get_bloginfo('charset'));



	# Get existing tags

	$tags  = $wpdb->get_col("SELECT DISTINCT tag_name FROM ".SFTAGS);

	if (empty($tags))   # No tags to suggest

	{

		echo '<p>'.__('There are no tags for Simple:Press.', 'sforum').'</p>';

		exit();

	}



	# Get topic name and data

	$content = $_POST['content'] .' '. $_POST['title'];

	$content = trim($content);



	if (empty($content))

	{

		echo '<p>'.__('You need to create a topic title and post content before tags can be suggested.', 'sforum').'</p>';

		exit();

	}



	$found = 0;

	foreach ((array) $tags as $tag)

	{

		$tag = $tag;

		if (is_string($tag) && !empty($tag) && stristr($content, $tag))

		{

			echo '<span class="local">'.$tag.'</span>'."\n";

			$found = 1;

		}

	}



	if (!$found)

	{

		echo '<p>'.__('No suggested tags from existing Simple:Press tags.', 'sforum').'</p>';

		exit();

	}



	echo '<div class="clear"></div>';



	exit();

}



function sf_suggest_ttn_tags()

{

	# Send good header HTTP

	status_header( 200 );

	header("Content-Type: text/javascript; charset=" . get_bloginfo('charset'));



	# Get topic name and data

	$content = $_POST['content'] .' '. $_POST['title'];

	$content = trim($content);

	if (empty($content))

	{

		echo '<p>'.__('You need to create a topic title and post content before tags can be suggested.', 'sforum').'</p>';

		exit();

	}



	# Get Tag This Net tags

	$data = '';

	$reponse = wp_remote_post('http://tagthe.net/api/?text='.urlencode($content).'&view=json&count=200');

	if (!is_wp_error($reponse) ) {

		$code = wp_remote_retrieve_response_code($reponse);

		if ($code == 200)

		{

			$data = maybe_unserialize(wp_remote_retrieve_body($reponse));

		}

	}



	$data = json_decode($data);

	$data = $data->memes[0];

	$data = $data->dimensions;



	if ( !isset($data->topic) && !isset($data->location) && !isset($data->person) ) {

		echo '<p>'.__('No suggested tags from Tag The Net service.', 'sforum').'</p>';

		exit();

	}



	$tags = array();

	# Get all topics

	foreach ((array) $data->topic as $topic)

	{

		$tags[] = '<span class="ttn_topic">'.$topic.'</span>';

	}



	# Get all locations

	foreach ( (array) $data->location as $location ) {

		$tags[] = '<span class="ttn_location">'.$location.'</span>';

	}



	# Get all persons

	foreach ((array) $data->person as $person)

	{

		$tags[] = '<span class="ttn_person">'.$person.'</span>';

	}



	# Remove empty terms

	$tags = array_filter($tags, 'sf_delete_empty_element');

	$tags = array_unique($tags);



	echo implode("\n", $tags);

	echo '<div class="clear"></div>';



	exit();

}



function sf_suggest_yahoo_tags()

{

	# Send good header HTTP

	status_header( 200 );

	header("Content-Type: text/javascript; charset=" . get_bloginfo('charset'));



	# Get topic name and data

	$content = $_POST['content'] .' '. $_POST['title'];

	$content = trim($content);

	if (empty($content))

	{

		echo '<p>'.__('You need to create a topic title and post content before tags can be suggested.', 'sforum').'</p>';

		exit();

	}



	# Application entrypoint -> http://code.google.com/p/simple-tags/

	# Yahoo ID : h4c6gyLV34Fs7nHCrHUew7XDAU8YeQ_PpZVrzgAGih2mU12F0cI.ezr6e7FMvskR7Vu.AA--

	$yahoo_id = 'h4c6gyLV34Fs7nHCrHUew7XDAU8YeQ_PpZVrzgAGih2mU12F0cI.ezr6e7FMvskR7Vu.AA--';



	# Build params

	$param = 'appid='.$yahoo_id; # Yahoo ID

	$param .= '&context='.urlencode($content); # Post content

	if (!empty($_POST['tags']))

	{

		$param .= '&query='.urlencode($_POST['tags']);  # Existing tags

	}

	$param .= '&output=php'; # Get PHP Array !



	$data = array();

	$reponse = wp_remote_post('http://search.yahooapis.com/ContentAnalysisService/V1/termExtraction?'.$param);

	if (!is_wp_error($reponse) && $reponse != null)

	{

		$code = wp_remote_retrieve_response_code($reponse);

		if ($code == 200)

		{

			$data = maybe_unserialize(wp_remote_retrieve_body($reponse));

		}

	}



	if (empty($data) || empty($data['ResultSet']) || is_wp_error($data))

	{

		echo '<p>'.__('No suggested tags from Yahoo! service.', 'sforum').'</p>';

		exit();

	}



	# Get result value

	$data = (array) $data['ResultSet']['Result'];



	# Remove empty terms

	$data = array_filter($data, 'sf_delete_empty_element');

	$data = array_unique($data);



	foreach ((array) $data as $tag)

	{

		echo '<span class="yahoo">'.$tag.'</span>'."\n";

	}



	echo '<div class="clear"></div>';



	exit();

}



function sf_delete_empty_element(&$element)

{

	$element = $element;

	$element = trim($element);

	if (!empty($element))

	{

		return $element;

	}

}



?>