<?php
// $Id: nodeactivity.module,v 1.2 2008-05-06 14:32:50 sirkitree Exp $

/**
 * Activity definition file
 *
 * This defines what hooks activity module should use
 */
function nodeactivity_activity_info() {
  $types = node_get_types();
  foreach ($types as $type) {
    $token_types[$type->type] = $type->name;
  }
  return array(
    'ops' => array('insert' => t('Create'), 'update' => t('Update'), 'delete' => t('Delete')),
    'types' => $token_types,
    'roles' => array(
      'author' => array(
        '#name' => t('Author'),
        '#description' => t('The person who created the node.'),
        '#default' => 'You [operation]d the [node-type] [node-title-link]',
      ),
      // This is what corresponds to ACTIVITY_ALL
      'all' => array(
        '#name' => t('All'),
        '#description' => t('The general public.'),
        '#default' => '[author] [operation]d the [node-type] [node-title-link]',
      ),
    ),
  );
}

/**
 * Token module integration.
 */
function nodeactivity_token_list($type = 'all') {
  if ($type == 'nodeactivity') {
    $tokens['nodeactivity'] = array(
      'node-id'  => t('Id of the post'),
      'operation' => t('The verb of the operation that took place, eg. "create", "update", "delete"'),
      'author' => t('Person who authored the node'),
      'node-title' => t('Title of the post'),
      'node-title-link' => t('Link to the post'),
      'node-type' => t('The type of post'),
      'author-name' => t('The name of the author'),
    );

    return $tokens;
  }
}

function nodeactivity_token_values($type, $data = NULL, $options = array()) {
  static $authors;
  if ($type == 'nodeactivity' && !empty($data)) {
    if (!isset($authors[$data['author-uid']])) {
      $author = activity_user_load($data['author-uid']);
      $authors[$data['author-uid']] = theme('username', $author);
    }
    $data['author'] = $authors[$data['author-uid']];
    return $data;
  }
}

/**
 * Implementation of hook_nodeapi()
 */
function nodeactivity_nodeapi($node, $op, $teaser, $page) {
  switch ($op) {
    case 'insert':
    case 'update':
    case 'delete':
      if ($node->status == 1) {
        $operation = $op == 'insert' ? t('create') : t($op);
        $type = $node->type;

        // This is all the information you'll need later in order to build
        // the activity message.
        $user = user_load(array('uid' => $node->uid));
        $data = array(
          'operation' => $operation,
          'node-id' => $node->nid,
          'author-uid' => $node->uid,
          'node-title' => $node->title,
          'node-type' => strtolower(node_get_types('name', $node->type)),
          'node-title-link' => l($node->title, 'node/'. $node->nid),
          'author-name' => $node->name,
        );
        // This determines who sees messages based on this data.
        // This implementation will ensure that the activity is shown
        // to the special group ACTIVITY_ALL (everybody, basically),
        // as well as to the person who inserted, updated or deleted the node.
        // The use of the role (all and author) ensures that we know later how
        // to address the person... ie "You" or "Bob".
        $target_users_roles = array(
          ACTIVITY_ALL => 'all',
          $node->uid => 'author'
        );
        
        activity_insert('nodeactivity', $type, $op, $data, $target_users_roles);
      }
      break;
  }
}