<?php
// $Id: commentactivity.module,v 1.1.2.7 2008-05-05 14:46:55 jaydub Exp $

/**
 * Activity definition file
 *
 * This defines what hooks activity module should use
 */
function commentactivity_activity_info() {
  return array(
    'ops' => array(
      'insert' => t('Insert'),
      'update' => t('Update'),
      'delete' => t('Delete'),
      'publish' => t('Publish'),
      'unpublish' => t('Unpublish')
    ),
    'types' => array('comment' => t('Comment')),
    'roles' => array(
      'author' => array(
        '#name' => t('Author'),
        '#description' => t('The person who created the comment.'),
        '#default' => 'You left the comment [subject] on [parent-node]',
      ),
      'parent_node_author' => array(
        '#name' => t('Parent node author'),
        '#description' => t('The person who created the node.'),
        '#default' => '[author] commented on [parent-node]',
      ),
      'parent_comment_author' => array(
        '#name' => t('Parent comment author'),
        '#description' => t('The person who wrote the comment.'),
        '#default' => '[author] replied to your comment [parent-comment] with [subject]',
      ),
      // This is what corresponds to ACTIVITY_ALL
      'all' => array(
        '#name' => t('All'),
        '#description' => t('The general public.'),
        '#default' => '[author] commented on [parent-node] saying [subject]',
      ),
    ),
  );
}

/**
 * Token module integration.
 */
function commentactivity_token_list($type = 'all') {
  if ($type == 'commentactivity') {
    $tokens['commentactivity'] = array(
      'author' => t('Person who authored the comment'),
      'subject' => t('The subject of the comment'),
      'parent-node'  => t('Link to the parent node'),
      'parent-node-author' => t('Person who authored the parent node'),
      'parent-node-type' => t('The type of the parent node'),
      'parent-comment-author' => t('Person who authored the parent comment'),
      'parent-comment' => t('The parent comment'),
    );

    return $tokens;
  }
}

function commentactivity_token_values($type, $data = NULL, $options = array()) {
  static $authors;
  if ($type == 'commentactivity' && !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_comment().
 */
function commentactivity_comment($comment, $op) {
  switch ($op) {
    // $comment is array for insert/update, is object for delete
    case 'insert':
    case 'update':
      if ($comment['status'] == COMMENT_NOT_PUBLISHED) {
        break;
      }
    case 'delete':
      if ($comment->status == COMMENT_NOT_PUBLISHED) {
        break;
      }
    case 'publish':
    case 'unpublish':
/*
    $comment:
    [cid] => 2  // the new comment id
    [pid] => 1  // the parent comment id
    [nid] => 1 // the parent node id
    [uid] => 1 // the author id.
*/
      // cast $comment to array
      $comment = (array) $comment;
      $node = node_load($comment['nid']);
      $node_author = db_fetch_object(db_query('SELECT uid, name FROM {users} WHERE uid = %d', $node->uid));
      if ($comment['pid']) {
        if ($parent_comment_author_uid = db_result(db_query("SELECT uid FROM {comments} WHERE cid = %d", $comment['pid']))) {
          $parent_comment_author = user_load(array('uid' => $parent_comment_author_uid));
          $parent_comment = db_result(db_query("SELECT subject FROM {comments} WHERE cid = %d", $comment['pid']));
        }
      }

      // This is all the information you'll need later in order to build
      // the activity message.
      $user = user_load(array('uid' => $comment['uid']));
      $data = array(
        'author-uid' => $user->uid,
        'subject' => l($comment['subject'], 'node/'. $node->nid, array(), NULL, 'comment-'. $comment['cid']),
        'parent-node' => l($node->title, 'node/'. $node->nid),
        'parent-node-author' => theme('username', $node_author),
        'parent-node-type' => $node->type,
      );
      
      $target_users_roles = array();
      // The order in which elements are added to $target_users_roles is
      // important. Since several of the roles can be the same person
      // eg. a person comments on their own node or replies to their own
      // comment, they may overwrite each other in the array.
      // This is fine as long as the most important role wins...
      if (is_object($parent_comment_author)) {
        $data['parent-comment'] = $parent_comment;
        $data['parent-comment-author'] = theme('username', $parent_comment_author);
        $target_users_roles[$parent_comment_author_uid] = 'parent comment author';
      }

      $target_users_roles = array(
        ACTIVITY_ALL => 'all',
        $node->uid => 'parent node author',
        // and the most important role is 'author' so we add it last.
        $comment['uid'] => 'author',
      );
      
      activity_insert('commentactivity', 'comment', $op, $data, $target_users_roles);
      break;
  }
}