<?php

/**
 * mailhandler assigns the values set with og_groups: [1,12,123] as 
 *
 *   $node->og_groups = array( 1, 12, 123 ) ;
 *
 * however, og wants these values to have the gid as the key and value, eg
 *
 *   $node->og_groups = array( 
 *                        1   => 1,
 *                        12  => 12,
 *                        123 => 123 
 *                      ) ;
 *
 * see http://drupal.org/node/136606#comment-1860524
 */
function og_mailhandler_mailhandler($node, $result, $i, $header, $mailbox) {
  if ( isset($node->og_groups) && is_array($node->og_groups) ) {
    $node->og_groups = array_combine($node->og_groups, $node->og_groups);
  }
  return $node ;
}

/**
 * provide a method for identifying whether posts submitted via 
 * mailhandler are acceptable based on the originating email address
 * and the corresponding user's membership of relevant OG groups
 *
 * see http://drupal.org/node/559524
 */
function og_mailhandler_nodeapi(&$node, $op, $a3=NULL, $a4=NULL) {
  switch( $op ) {
    case 'validate' :
//watchdog('og_mailhandler',t('In nodeapi for node !title.',array('!title'=>$node->title)));
      if ( og_is_group_post_type($node->type) ) {
//watchdog('og_mailhandler','Is an OG Group Post Type');
      if ( !isset($node->uid) || $node->uid == '0' ) {
//watchdog('og_mailhandler','Anonymous submission');
        form_set_error('',"Rejecting submission from unrecognised email address.");
        watchdog('og_mailhandler','Rejecting OG group post from unknown email via mailhandler.');
      } else {
        $args['!uid'] = $node->uid ;
//watchdog('og_mailhandler',t('Identifiable user (UID !uid)', array('!uid'=>$node->uid)));
        if ( isset($node->og_groups) ) {
//watchdog('og_mailhandler','Has groups assigned. Groups are: '.print_r($node->og_groups,1));
          $account = user_load($node->uid) ;
//watchdog('og_mailhandler','User ID of poster is: '.print_r($node->uid,1));
          foreach( $node->og_groups as $k => $gid ) {
//watchdog('og_mailhandler','Group ID is: '.$gid);
            $args = array('!name'=>$account->name,'!gid'=>$gid) ;
//watchdog('og_mailhandler','Args is: '.print_r($args,1));
            if ( !og_is_group_member($gid, TRUE, $account->uid) ) {
//watchdog('og_mailhandler','UID'.$user->uid.' is a not member of Group '.$gid);
              unset($node->og_groups[$k]) ;
              watchdog('og_mailhandler',t('Post by !name to OG Group !gid is not allowed',$args));
            }
          }
          if ( empty($node->og_groups) ) {
//watchdog('og_mailhandler','Groups for this node is empty, so will drop it.');
            form_set_error('',t('Rejected post by !name',$args));
            watchdog('og_mailhandler',t('Rejected post by !name',$args));
          }
        }
      }
    }
    break ;
  }
}