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<?php

/**
 * bbPress Phorum Converter
 *
 * @package bbPress
 * @subpackage Converters
 */

/**
 * Implementation of Phorum Forum converter.
 *
 * @since 2.5.0 bbPress (r5141)
 *
 * @link Codex Docs https://codex.bbpress.org/import-forums/phorum
 */
class Phorum extends BBP_Converter_Base {

/**
	 * Main Constructor
	 *
	 */
	public function __construct() {
		parent::__construct();
	}

/**
	 * Sets up the field mappings
	 */
	public function setup_globals() {

/** Forum Section *****************************************************/

// Old forum id (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename' => 'forums',
			'from_fieldname' => 'forum_id',
			'to_type'        => 'forum',
			'to_fieldname'   => '_bbp_old_forum_id'
		);

// Forum parent id (If no parent, then 0, Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'forums',
			'from_fieldname'  => 'parent_id',
			'to_type'         => 'forum',
			'to_fieldname'    => '_bbp_old_forum_parent_id'
		);

// Forum topic count (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename' => 'forums',
			'from_fieldname' => 'thread_count',
			'to_type'        => 'forum',
			'to_fieldname'   => '_bbp_topic_count'
		);

// Forum reply count (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename' => 'forums',
			'from_fieldname' => 'message_count',
			'to_type'        => 'forum',
			'to_fieldname'   => '_bbp_reply_count'
		);

// Forum title.
		$this->field_map[] = array(
			'from_tablename' => 'forums',
			'from_fieldname' => 'name',
			'to_type'        => 'forum',
			'to_fieldname'   => 'post_title'
		);

// Forum slug (Clean name to avoid conflicts)
		$this->field_map[] = array(
			'from_tablename'  => 'forums',
			'from_fieldname'  => 'name',
			'to_type'         => 'forum',
			'to_fieldname'    => 'post_name',
			'callback_method' => 'callback_slug'
		);

// Forum description.
		$this->field_map[] = array(
			'from_tablename'  => 'forums',
			'from_fieldname'  => 'description',
			'to_type'         => 'forum',
			'to_fieldname'    => 'post_content',
			'callback_method' => 'callback_null'
		);

// Forum display order (Starts from 1)
		$this->field_map[] = array(
			'from_tablename' => 'forums',
			'from_fieldname' => 'display_order',
			'to_type'        => 'forum',
			'to_fieldname'   => 'menu_order'
		);

// Forum type (Category = 1 or Forum = 0, Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'forums',
			'from_fieldname'  => 'folder_flag',
			'to_type'         => 'forum',
			'to_fieldname'    => '_bbp_forum_type',
			'callback_method' => 'callback_forum_type'
		);

// Forum status (Set a default value 'open', Stored in postmeta)
		$this->field_map[] = array(
			'to_type'      => 'forum',
			'to_fieldname' => '_bbp_status',
			'default'      => 'open'
		);

// Forum dates.
		$this->field_map[] = array(
			'to_type'      => 'forum',
			'to_fieldname' => 'post_date',
			'default'      => date('Y-m-d H:i:s')
		);
		$this->field_map[] = array(
			'to_type'      => 'forum',
			'to_fieldname' => 'post_date_gmt',
			'default'      => date('Y-m-d H:i:s')
		);
		$this->field_map[] = array(
			'to_type'      => 'forum',
			'to_fieldname' => 'post_modified',
			'default'      => date('Y-m-d H:i:s')
		);
		$this->field_map[] = array(
			'to_type'      => 'forum',
			'to_fieldname' => 'post_modified_gmt',
			'default'      => date('Y-m-d H:i:s')
		);

/** Topic Section *****************************************************/

// Old topic id (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'thread',
			'from_expression' => 'WHERE parent_id = 0',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_old_topic_id'
		);

// Topic reply count (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'thread_count',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_reply_count',
			'callback_method' => 'callback_topic_reply_count'
		);

// Topic total reply count (Includes unpublished replies, Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'thread_count',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_total_reply_count',
			'callback_method' => 'callback_topic_reply_count'
		);

// Topic parent forum id (If no parent, then 0, Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'forum_id',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_forum_id',
			'callback_method' => 'callback_forumid'
		);

// Topic author.
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'user_id',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_author',
			'callback_method' => 'callback_userid'
		);

// Topic author name (Stored in postmeta as _bbp_anonymous_name)
		$this->field_map[] = array(
			'from_tablename' => 'messages',
			'from_fieldname' => 'author',
			'to_type'        => 'topic',
			'to_fieldname'   => '_bbp_old_topic_author_name_id'
		);

// Is the topic anonymous (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'user_id',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_old_is_topic_anonymous_id',
			'callback_method' => 'callback_check_anonymous'
		);

// Topic Author ip (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'ip',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_author_ip'
		);

// Topic content.
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'body',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_content',
			'callback_method' => 'callback_html'
		);

// Topic title.
		$this->field_map[] = array(
			'from_tablename' => 'messages',
			'from_fieldname' => 'subject',
			'to_type'        => 'topic',
			'to_fieldname'   => 'post_title'
		);

// Topic slug (Clean name to avoid conflicts)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'subject',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_name',
			'callback_method' => 'callback_slug'
		);

// Topic parent forum id (If no parent, then 0)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'forum_id',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_parent',
			'callback_method' => 'callback_forumid'
		);

// Topic dates.
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_date',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_date_gmt',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_modified',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'topic',
			'to_fieldname'    => 'post_modified_gmt',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_last_active_time',
			'callback_method' => 'callback_datetime'
		);

// Topic status (Open = 0 or Closed = 1)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'closed',
			'to_type'         => 'topic',
			'to_fieldname'    => '_bbp_old_closed_status_id',
			'callback_method' => 'callback_topic_status'
		);

/** Tags Section ******************************************************/

/**
		 * Phorum v5.2.19 Forums do not support topic tags out of the box
		 */

/** Topic Subscriptions Section ***************************************/

// Subscribed topic ID (Stored in usermeta)
		$this->field_map[] = array(
			'from_tablename'  => 'subscribers',
			'from_fieldname'  => 'thread',
			'to_type'         => 'topic_subscriptions',
			'to_fieldname'    => '_bbp_subscriptions'
		);

// Subscribed user ID (Stored in usermeta)
		$this->field_map[] = array(
			'from_tablename'  => 'subscribers',
			'from_fieldname'  => 'user_id',
			'to_type'         => 'topic_subscriptions',
			'to_fieldname'    => 'user_id',
			'callback_method' => 'callback_userid'
		);

/** Reply Section *****************************************************/

// Old reply id (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'message_id',
			'from_expression' => 'WHERE parent_id != 0',
			'to_type'         => 'reply',
			'to_fieldname'    => '_bbp_old_reply_id'
		);

// Reply parent forum id (If no parent, then 0. Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'forum_id',
			'to_type'         => 'reply',
			'to_fieldname'    => '_bbp_forum_id',
			'callback_method' => 'callback_forumid'
		);

// Reply parent topic id (If no parent, then 0. Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'thread',
			'to_type'         => 'reply',
			'to_fieldname'    => '_bbp_topic_id',
			'callback_method' => 'callback_topicid'
		);

// Reply author ip (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename' => 'messages',
			'from_fieldname' => 'ip',
			'to_type'        => 'reply',
			'to_fieldname'   => '_bbp_author_ip'
		);

// Reply author.
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'user_id',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_author',
			'callback_method' => 'callback_userid'
		);

// Reply author name (Stored in postmeta as _bbp_anonymous_name)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'author',
			'to_type'         => 'reply',
			'to_fieldname'   => '_bbp_old_reply_author_name_id'
		);

// Is the reply anonymous  (Stored in postmeta)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'user_id',
			'to_type'         => 'reply',
			'to_fieldname'    => '_bbp_old_is_reply_anonymous_id',
			'callback_method' => 'callback_check_anonymous'
		);

// Reply content.
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'body',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_content',
			'callback_method' => 'callback_html'
		);

// Reply parent topic id (If no parent, then 0)
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'thread',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_parent',
			'callback_method' => 'callback_topicid'
		);

// Reply dates.
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_date',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_date_gmt',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_modified',
			'callback_method' => 'callback_datetime'
		);
		$this->field_map[] = array(
			'from_tablename'  => 'messages',
			'from_fieldname'  => 'datestamp',
			'to_type'         => 'reply',
			'to_fieldname'    => 'post_modified_gmt',
			'callback_method' => 'callback_datetime'
		);

/** User Section ******************************************************/

// Store old user id (Stored in usermeta)
		$this->field_map[] = array(
			'from_tablename' => 'users',
			'from_fieldname' => 'user_id',
			'to_type'        => 'user',
			'to_fieldname'   => '_bbp_old_user_id'
		);

// Store old user password (Stored in usermeta serialized with salt)
		$this->field_map[] = array(
			'from_tablename'  => 'users',
			'from_fieldname'  => 'password',
			'to_type'         => 'user',
			'to_fieldname'    => '_bbp_password',
			'callback_method' => 'callback_savepass'
		);

// Store old user salt (This is only used for the SELECT row info for the above password save)
//		$this->field_map[] = array(
//			'from_tablename' => 'users',
//			'from_fieldname' => 'salt',
//			'to_type'        => 'user',
//			'to_fieldname'   => ''
//		);

// User password verify class (Stored in usermeta for verifying password)
		$this->field_map[] = array(
			'to_type'      => 'users',
			'to_fieldname' => '_bbp_class',
			'default'      => 'Phorum'
		);

// User name.
		$this->field_map[] = array(
			'from_tablename' => 'users',
			'from_fieldname' => 'username',
			'to_type'        => 'user',
			'to_fieldname'   => 'user_login'
		);

// User nice name.
		$this->field_map[] = array(
			'from_tablename' => 'users',
			'from_fieldname' => 'display_name',
			'to_type'        => 'user',
			'to_fieldname'   => 'user_nicename'
		);

// User email.
		$this->field_map[] = array(
			'from_tablename' => 'users',
			'from_fieldname' => 'email',
			'to_type'        => 'user',
			'to_fieldname'   => 'user_email'
		);

// User registered.
		$this->field_map[] = array(
			'from_tablename'  => 'users',
			'from_fieldname'  => 'date_added',
			'to_type'         => 'user',
			'to_fieldname'    => 'user_registered',
			'callback_method' => 'callback_datetime'
		);

// User display name.
		$this->field_map[] = array(
			'from_tablename' => 'users',
			'from_fieldname' => 'real_name',
			'to_type'        => 'user',
			'to_fieldname'   => 'display_name'
		);

// Store Signature (Stored in usermeta)
		$this->field_map[] = array(
			'from_tablename' => 'users',
			'from_fieldname' => 'signature',
			'to_type'        => 'user',
			'to_fieldname'   => '_bbp_phorum_user_sig',
			'callback_method' => 'callback_html'
		);

}

/**
	 * This method allows us to indicates what is or is not converted for each
	 * converter.
	 */
	public function info() {
		return '';
	}

/**
	 * This method is to save the salt and password together.  That
	 * way when we authenticate it we can get it out of the database
	 * as one value. Array values are auto sanitized by WordPress.
	 */
	public function callback_savepass( $field, $row ) {
		$pass_array = array( 'hash' => $field, 'salt' => $row['salt'] );
		return $pass_array;
	}

/**
	 * This method is to take the pass out of the database and compare
	 * to a pass the user has typed in.
	 */
	public function authenticate_pass( $password, $serialized_pass ) {
		$pass_array = unserialize( $serialized_pass );
		return ( $pass_array['hash'] == md5( md5( $password ). $pass_array['salt'] ) );
	}

/**
	 * Translate the forum type from Phorum v5.2.19 numerics to WordPress's strings.
	 *
	 * @param int $status Phorum v5.2.19 numeric forum type
	 * @return string WordPress safe
	 */
	public function callback_forum_type( $status = 0 ) {
		switch ( $status ) {
			case 1 :
				$status = 'category';
				break;

case 0  :
			default :
				$status = 'forum';
				break;
		}
		return $status;
	}

/**
	 * Translate the post status from Phorum v5.2.19 numerics to WordPress's strings.
	 *
	 * @param int $status Phorum v5.2.19 numeric topic status
	 * @return string WordPress safe
	 */
	public function callback_topic_status( $status = 0 ) {
		switch ( $status ) {
			case 1 :
				$status = 'closed';
				break;

case 0  :
			default :
				$status = 'publish';
				break;
		}
		return $status;
	}

/**
	 * Verify the topic/reply count.
	 *
	 * @param int $count Phorum v5.2.19 topic/reply counts
	 * @return string WordPress safe
	 */
	public function callback_topic_reply_count( $count = 1 ) {
		$count = absint( (int) $count - 1 );
		return $count;
	}
}