/home/arranoyd/magicraft/wp-content/themes/massive-dynamic/lib/post-like.php
<?php
/*
Portfolio Like System
*/
/**
* (1) Enqueue scripts for like system
*/
function pixflow_like_scripts() {
wp_enqueue_script( 'md_like_post', pixflow_path_combine(PIXFLOW_THEME_LIB_URI,'/assets/script/post-like.min.js'), array('jquery'), null , 1 );
wp_localize_script( 'md_like_post', 'ajax_var', array(
'url' => admin_url( 'admin-ajax.php' ),
'nonce' => wp_create_nonce( 'ajax-nonce' )
)
);
}
add_action( 'init', 'pixflow_like_scripts');
/**
* (2) Save like data
*/
add_action( 'wp_ajax_nopriv_pixflow-post-like', 'pixflow_post_like');
add_action( 'wp_ajax_pixflow-post-like', 'pixflow_post_like');
function pixflow_post_like() {
$nonce = $_POST['nonce'];
if ( ! wp_verify_nonce( $nonce, 'ajax-nonce' ) )
die ( '' );
if ( isset( $_POST['pixflow_post_like'] ) ) {
$post_id = $_POST['post_id']; // post id
$post_like_count = get_post_meta( $post_id, "_post_like_count", true ); // post like count
if ( function_exists ( 'wp_cache_post_change' ) ) { // invalidate WP Super Cache if exists
$GLOBALS["super_cache_enabled"]=1;
wp_cache_post_change( $post_id );
}
if ( is_user_logged_in() ) { // user is logged in
$user_id = get_current_user_id(); // current user
$meta_POSTS = get_user_option( "_liked_posts", $user_id ); // post ids from user meta
$meta_USERS = get_post_meta( $post_id, "_user_liked" ); // user ids from post meta
$liked_POSTS = NULL; // setup array variable
$liked_USERS = NULL; // setup array variable
if ( count( $meta_POSTS ) != 0 ) { // meta exists, set up values
$liked_POSTS = $meta_POSTS;
}
if ( !is_array( $liked_POSTS ) ) // make array just in case
$liked_POSTS = array();
if ( count( $meta_USERS ) != 0 ) { // meta exists, set up values
$liked_USERS = $meta_USERS[0];
}
if ( !is_array( $liked_USERS ) ) // make array just in case
$liked_USERS = array();
$liked_POSTS['post-'.$post_id] = $post_id; // Add post id to user meta array
$liked_USERS['user-'.$user_id] = $user_id; // add user id to post meta array
$user_likes = count( $liked_POSTS ); // count user likes
if ( !pixflow_AlreadyLiked( $post_id ) ) { // like the post
update_post_meta( $post_id, "_user_liked", $liked_USERS ); // Add user ID to post meta
update_post_meta( $post_id, "_post_like_count", ++$post_like_count ); // +1 count post meta
update_user_option( $user_id, "_liked_posts", $liked_POSTS ); // Add post ID to user meta
update_user_option( $user_id, "_user_like_count", $user_likes ); // +1 count user meta
echo esc_attr($post_like_count); // update count on front end
} else { // unlike the post
$pid_key = array_search( $post_id, $liked_POSTS ); // find the key
$uid_key = array_search( $user_id, $liked_USERS ); // find the key
unset( $liked_POSTS[$pid_key] ); // remove from array
unset( $liked_USERS[$uid_key] ); // remove from array
$user_likes = count( $liked_POSTS ); // recount user likes
update_post_meta( $post_id, "_user_liked", $liked_USERS ); // Remove user ID from post meta
update_post_meta($post_id, "_post_like_count", --$post_like_count ); // -1 count post meta
update_user_option( $user_id, "_liked_posts", $liked_POSTS ); // Remove post ID from user meta
update_user_option( $user_id, "_user_like_count", $user_likes ); // -1 count user meta
echo esc_attr($post_like_count); // update count on front end
}
} else { // user is not logged in (anonymous)
$ip = $_SERVER['REMOTE_ADDR']; // user IP address
$meta_IPS = get_post_meta( $post_id, "_user_IP" ); // stored IP addresses
$liked_IPS = NULL; // set up array variable
if ( count( $meta_IPS ) != 0 ) { // meta exists, set up values
$liked_IPS = $meta_IPS[0];
}
if ( !is_array( $liked_IPS ) ) // make array just in case
$liked_IPS = array();
if ( !in_array( $ip, $liked_IPS ) ) // if IP not in array
$liked_IPS['ip-'.$ip] = $ip; // add IP to array
if ( !pixflow_AlreadyLiked( $post_id ) ) { // like the post
update_post_meta( $post_id, "_user_IP", $liked_IPS ); // Add user IP to post meta
update_post_meta( $post_id, "_post_like_count", ++$post_like_count ); // +1 count post meta
echo esc_attr($post_like_count); // update count on front end
} else { // unlike the post
$ip_key = array_search( $ip, $liked_IPS ); // find the key
unset( $liked_IPS[$ip_key] ); // remove from array
update_post_meta( $post_id, "_user_IP", $liked_IPS ); // Remove user IP from post meta
update_post_meta( $post_id, "_post_like_count", --$post_like_count ); // -1 count post meta
echo "already".esc_attr($post_like_count); // update count on front end
}
}
}
exit;
}
/**
* (3) Test if user already liked post
*/
function pixflow_AlreadyLiked($post_id ) { // test if user liked before
if ( is_user_logged_in() ) { // user is logged in
$user_id = get_current_user_id(); // current user
$meta_USERS = get_post_meta( $post_id, "_user_liked" ); // user ids from post meta
$liked_USERS = ""; // set up array variable
if ( count( $meta_USERS ) != 0 ) { // meta exists, set up values
$liked_USERS = $meta_USERS[0];
}
if( !is_array( $liked_USERS ) ) // make array just in case
$liked_USERS = array();
if ( in_array( $user_id, $liked_USERS ) ) { // True if User ID in array
return true;
}
return false;
} else { // user is anonymous, use IP address for voting
$meta_IPS = get_post_meta( $post_id, "_user_IP" ); // get previously voted IP address
$ip = $_SERVER["REMOTE_ADDR"]; // Retrieve current user IP
$liked_IPS = ""; // set up array variable
if ( count( $meta_IPS ) != 0 ) { // meta exists, set up values
$liked_IPS = $meta_IPS[0];
}
if ( !is_array( $liked_IPS ) ) // make array just in case
$liked_IPS = array();
if ( in_array( $ip, $liked_IPS ) ) { // True is IP in array
return true;
}
return false;
}
}
/**
* (4) Front end button
*/
function pixflow_getPostLikeLink($post_id, $location = 'shortcode' ) {
$like_count = get_post_meta( $post_id, "_post_like_count", true ); // get post likes
if ( pixflow_AlreadyLiked( $post_id ) ) {
$class = esc_attr( ' liked' );
$title = esc_attr( 'Unlike' );
$heart = '<i id="icon-like" class="icon-heart32"></i>';
} else {
$class = esc_attr( '' );
$title = esc_attr( 'Like' );
$heart = '<i id="icon-unlike" class="icon-heart32"></i>';
}
if('shortcode' == $location){
$count = ( empty( $like_count ) || $like_count == "0" ) ? ' ' : esc_attr( $like_count );
$count = ' <span class="like-count">'.$count.'</span>';
$output = '<a href="#" class="md-post-like'.$class.'" data-post_id="'.$post_id.'" title="'.$title.'"><span class="like-heart">'.$heart.'</span>'.$count.'</a>';
}elseif('detail' == $location){
$count = ( empty( $like_count ) || $like_count == "0" ) ? '0' : esc_attr( $like_count );
$count = ' <span class="value">'.$count.'</span>';
$output = '<a class="portfolio-detail-like like accent-color'.$class.'" data-post_id="'.$post_id.'" title="'.$title.'">'.$heart.' '.$count.' </a>';
}
return $output;
}
/**
* (5) Retrieve User Likes and Show on Profile
*/
add_action( 'show_user_profile', 'pixflow_show_user_likes');
add_action( 'edit_user_profile', 'pixflow_show_user_likes');
function pixflow_show_user_likes($user ) { ?>
<table class="form-table">
<tr>
<th><label for="user_likes"><?php esc_attr_e( 'You Like:','massive-dynamic' ); ?></label></th>
<td>
<?php
$user_likes = get_user_option( "_liked_posts", $user->ID );
if ( !empty( $user_likes ) && count( $user_likes ) > 0 ) {
$the_likes = $user_likes;
} else {
$the_likes = '';
}
if ( !is_array( $the_likes ) )
$the_likes = array();
$count = count( $the_likes );
$i=0;
if ( $count > 0 ) {
$like_list = '';
echo "<p>\n";
foreach ( $the_likes as $the_like ) {
$i++;
$like_list .= "<a href=\"" . esc_url( get_permalink( $the_like ) ) . "\" title=\"" . esc_attr( get_the_title( $the_like ) ) . "\">" . get_the_title( $the_like ) . "</a>\n";
if ($count != $i) $like_list .= " · ";
else $like_list .= "</p>\n";
}
echo esc_attr($like_list);
} else {
echo "<p>" . esc_attr_e( 'You don\'t like anything yet.' ,'massive-dynamic') . "</p>\n";
} ?>
</td>
</tr>
</table>
<?php }
/**
* (7) If the user is logged in, output a list of posts that the user likes
* Markup assumes sidebar/widget usage
*/
function pixflow_frontEndUserLikes() {
if ( is_user_logged_in() ) { // user is logged in
$like_list = '';
$user_id = get_current_user_id(); // current user
$user_likes = get_user_option( "_liked_posts", $user_id );
if ( !empty( $user_likes ) && count( $user_likes ) > 0 ) {
$the_likes = $user_likes;
} else {
$the_likes = '';
}
if ( !is_array( $the_likes ) )
$the_likes = array();
$count = count( $the_likes );
if ( $count > 0 ) {
$limited_likes = array_slice( $the_likes, 0, 5 ); // this will limit the number of posts returned to 5
$like_list .= "<aside>\n";
$like_list .= "<h3>" . esc_attr__( 'You Like:','massive-dynamic' ) . "</h3>\n";
$like_list .= "<ul>\n";
foreach ( $limited_likes as $the_like ) {
$like_list .= "<li><a href='" . esc_url( get_permalink( $the_like ) ) . "' title='" . esc_attr( get_the_title( $the_like ) ) . "'>" . get_the_title( $the_like ) . "</a></li>\n";
}
$like_list .= "</ul>\n";
$like_list .= "</aside>\n";
}
echo esc_attr($like_list);
}
}