Drupal: Donate userpoints to node author

<?php/** * @file *  * Donate userpoints on a node page *  * @author DrupalD <DrupalD@twitter> *  *//** * usertip_get_usertip *  * @param unknown_type $node * @author DrupalD <DrupalD@twitter> */function usertip_get_usertip($sn__uid = NULL) {    global $user;    $form = array();  $sn__points = usertip_user_get_pionts();  $form['usertip_container'] = array(    '#type' => 'fieldset',    '#title' => t('Give Tip'),    '#collapsible' => TRUE,    '#collapsed' => FALSE,    '#weight' => 2,  );        if ($user->uid != 1 && user_access('give points to another user') && $sn__points != 0) {        $sn__donation_tid = variable_get('userpoints_category_default_tid');        $r__result = db_query("SELECT name FROM {taxonomy_term_data} WHERE tid = :tid", array(':tid' => $sn__donation_tid));        $os__category = $r__result->fetchObject();        $form['usertip_container']['usertip_remaining'] = array(      '#markup' => t('Your point balance is !points for !category category', array('!points' => $sn__points, '!category' => $os__category->name)),      '#weight' => -10    );              $form['usertip_container']['usertip_form'] = array(        '#markup' => drupal_render(drupal_get_form('userpoints_donation_giveform', 1, 0, NULL)),        '#weight' => -9,       );                  $form['usertip_container']['usertip_doners'] = array(      '#markup' => _get_usertip_donors(),        '#wieght' => -8,      );    }    else {        $form['usertip_container']['tip_warning'] = array(          '#markup' => t('Either you do not have privilege to tip or your point balance is low.')        );    }        return drupal_render($form);}/** * Implementation of hook_form_alter *  * @param unknown_type $form * @param unknown_type $form_state * @param unknown_type $form_id * @author DrupalD <DrupalD@twitter> */function usertip_form_alter(&$form, $form_state, $form_id) {  drupal_add_library('system', 'drupal.ajax');  drupal_add_library('system', 'jquery.form');  include_once('includes/ajax.inc');      if ($form_id == 'userpoints_donation_giveform') {        $form_state['build_info']['base_form_id'] = str_replace('-', '_', 'userpoints-donation-giveform');        $form['to']['#type'] = 'hidden';        $form['amount']['#type'] = 'select';        $form['amount']['#size'] = 1;        $form['amount']['#prefix'] = "<div style='clear:both;float:left;margin-right:10px'>";        $form['amount']['#suffix'] = "</div>";        $form['amount']['#options'] = array(          0 => t('Select amount'),          5 => 5,          10 => 10,          25 => 25,          50 => 50,           100 => 100,        );                $form['submit']['#attributes'] = array('class' => array('use-ajax-submit'));        $form['submit']['#value'] = t('tip');        $form['submit']['#prefix'] = "<div style='dispaly:inline; width:200px; margin-top:12px;'>";        $form['submit']['#suffix'] = "</div>";        $form['reason']['#type'] = 'hidden';        $form['reason']['#default_value'] = t('Video');        unset($form['tid']);    }}/** * Implementation of hook_block_info *  * @author DrupalD <DrupalD@twitter> */function usertip_block_info() {    $block['usertip'] = array(    'info' => t('Give tip'),      'cache' => DRUPAL_NO_CACHE,    );    return $block;}/** * Implementation of hook_block_view *  * @param unknown_type $delta * @author DrupalD <DrupalD@twitter> */function usertip_block_view($delta = '') {    switch ($delta) {        case 'usertip':            $block['subject'] = t('Give tip');            $block['content'] = usertip_get_usertip();            break;    }    return $block;}/** * _get_usertip_donors *  * Return faces of usertip donors *  * @author DrupalD <DrupalD@twitter> */function _get_usertip_donors() {    global $user;    $output = "<div class='donor'>";    $r__result = db_select('userpoints_txn', 'utn');    $r__result->leftjoin('users', 'u', 'utn.uid = u.uid');  $r__result->fields('utn', array('points'))            ->fields('u', array('picture', 'name', 'uid'))              ->condition('utn.operation', 'userpoints_donation_given', '=')              ->condition('utn.entity_type', 'user', '=')              ->condition('utn.entity_id', 1, '=')              ->orderby ('utn.time_stamp', 'DESC')              ->range(0, 5);      $am__user = $r__result->execute();    while ($am__user_record = $am__user->fetchAssoc()) {        if ($am__user_record['picture']) {            $r__image = db_select('file_managed', 'fm');            $r__image->leftjoin('users', 'u', 'fm.fid = u.picture');            $r__image->fields('fm', array('uri'))                     ->condition('fm.fid', $am__user_record['picture'], '=');            $as__image = $r__image->execute()->fetchAssoc();            $ss__user = ($am__user_record['name'] == $user->name) ? t('You') : $am__user_record['name'];             $ss__alt_title = t('@name has dondated @points tip', array('@name' => $ss__user, '@points' => abs($am__user_record['points'])));             $am__variable = array(              'path' => $as__image['uri'],              'width' => '16px',              'height' => '16px',              'alt' => $ss__alt_title,              'title' => $ss__alt_title,            );            $ss__image = theme('image', $am__variable);            $output .= "<div class='donor-user'>". l($ss__image, "user/". $am__user_record['uid'], array('html' => TRUE)) ."</div>";        }      }      return $output ."</div>";}/** * usertip_user_get_pionts *  * @author DrupalD <DrupalD@twitter> */function usertip_user_get_pionts() {    global $user;    $sn__donation_tid = variable_get('userpoints_category_default_tid');    $r__result = db_select('userpoints', 'up');    $r__result->fields('up', array('points'))              ->condition('up.uid', $user->uid, '=');     $am__points = $r__result->execute();    $om__balance = $am__points->fetchAll();    if (isset($om__balance[0]->points)) {        return $om__balance[0]->points;    }    else {        return 0;    }}?>