WTI like methods

/**
 * Return true if 'Like' functionality is available and not excluded for this post ID
 */
function ff_is_like_enabled($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    // if plugin not installed/active then abort and return false
    if( ! function_exists("GetWtiLikePost")) return FALSE;

    // Get the posts ids where we do not need to show like functionality
    $allowed_posts          = explode(",", get_option('wti_like_post_allowed_posts'));
    $excluded_posts         = explode(",", get_option('wti_like_post_excluded_posts'));
    $excluded_categories    = get_option('wti_like_post_excluded_categories');
    $excluded_sections      = get_option('wti_like_post_excluded_sections');

    if(empty($excluded_categories)) {
        $excluded_categories = array();
    }

    // Checking for excluded section. if yes, then dont show the like/dislike option
    if(!empty($excluded_sections)) {
        if((in_array('home', $excluded_sections) && is_home()) ||
                (in_array('archive', $excluded_sections) && is_archive()) ||
                    (in_array('search', $excluded_sections) && is_search())) {
            return FALSE;
        }
    }

    // Checking for excluded categories
    $category = get_the_category($post_id);
    foreach($category as $cat) {
        if(in_array($cat->cat_ID, $excluded_categories) && !in_array($post_id, $allowed_posts)) {
            return FALSE;
        }
    }

    // Checking for excluded posts
    if(in_array($post_id, $excluded_posts)) {
        return FALSE;
    }

    // if we get here then the functionality is enabled
    return TRUE;
}

/**
 * Convenience methods for retrieving like / unlike count
 */
function ff_get_like_count($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    if(ff_is_like_enabled($post_id)) {
        return GetWtiLikeCount($post_id);
    } else {
        return 0;
    }
}

function ff_like_count($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    echo ff_get_like_count($post_id);
}

function ff_get_unlike_count($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    if(ff_is_like_enabled($post_id)) {
        return GetWtiUnlikeCount($post_id);
    } else {
        return 0;
    }
}

function ff_unlike_count($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    echo ff_get_unlike_count($post_id);
}

/**
 * return markup for LIKE / UNLIKE buttons
 * or empty string if not available
 */
function ff_get_like_buttons($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    // abort here if functionality is not enabled
    if( ! ff_is_like_enabled($post_id)) return "";


    // Check for title text. if empty then have the default value
    $title_text = get_option('wti_like_post_title_text');
    if(empty($title_text)) {
        $title_text_like    = __('Like', 'wti-like-post');
        $title_text_unlike  = __('Unlike', 'wti-like-post');
    } else {
        $title_text = explode('/', get_option('wti_like_post_title_text'));
        $title_text_like    = $title_text[0];
        $title_text_unlike  = $title_text[1];
    }

    // Get the nonce for security purpose and create the like and unlike urls
    $nonce              = wp_create_nonce("wti_like_post_vote_nonce");
    $ajax_like_link     = admin_url('admin-ajax.php?action=wti_like_post_process_vote&task=like&post_id=' . $post_id . '&nonce=' . $nonce);
    $ajax_unlike_link   = admin_url('admin-ajax.php?action=wti_like_post_process_vote&task=unlike&post_id=' . $post_id . '&nonce=' . $nonce);

    $like_count     = GetWtiLikeCount($post_id);
    $unlike_count   = GetWtiUnlikeCount($post_id);
    $show_dislike   = get_option('wti_like_post_show_dislike');

    // Get voted details
    $ip             = WtiGetRealIpAddress();
    $voted_result   = HasWtiAlreadyVoted($post_id, $ip);
    $wti_has_voted  = $voted_result['has_voted'];
    $voted_count    = $voted_result['voted_count'];

    // generate button output
    $output         = "";

    // like button
    $output         .= sprintf("<a class='jlk btn-small like like-%d' data-task='like' data-post_id='%d' data-nonce='%s' rel='nofollow'>%s</a>",
                               $post_id, $post_id, $nonce, $title_text_like);
    if($show_dislike) {
        $output         .= sprintf("<a class='jlk btn-small unlike unlike-%d' data-task='unlike' data-post_id='%d' data-nonce='%s' rel='nofollow'>%s</a>",
                               $post_id, $post_id, $nonce, $title_text_unlike);
    }

    return $output;
}

/**
 * Echo output of ff_get_like_buttons
 */
function ff_the_like_buttons($post_id=NULL) {
    if($post_id == NULL) $post_id = get_the_ID();

    echo ff_get_like_buttons($post_id);
}