<?php

/**

 * bbPress Forum Functions

 *

 * @package bbPress

 * @subpackage Functions

 */

// Exit if accessed directly

if ( !defined( 'ABSPATH' ) ) exit;

/** Insert ********************************************************************/

/**

 * A wrapper for wp_insert_post() that also includes the necessary meta values

 * for the forum to function properly.

 *

 * @since bbPress (r3349)

 *

 * @uses bbp_parse_args()

 * @uses bbp_get_forum_post_type()

 * @uses wp_insert_post()

 * @uses update_post_meta()

 *

 * @param array $forum_data Forum post data

 * @param arrap $forum_meta Forum meta data

 */

function bbp_insert_forum( $forum_data = array(), $forum_meta = array() ) {

	// Forum

	$default_forum = array(

		'post_parent'    => 0, // forum ID

		'post_status'    => bbp_get_public_status_id(),

		'post_type'      => bbp_get_forum_post_type(),

		'post_author'    => bbp_get_current_user_id(),

		'post_password'  => '',

		'post_content'   => '',

		'post_title'     => '',

		'menu_order'     => 0,

		'comment_status' => 'closed'

	);

	$forum_data = bbp_parse_args( $forum_data, $default_forum, 'insert_forum' );

	// Insert forum

	$forum_id   = wp_insert_post( $forum_data );

	// Bail if no forum was added

	if ( empty( $forum_id ) )

		return false;

	// Forum meta

	$default_meta = array(

		'reply_count'          => 0,

		'topic_count'          => 0,

		'topic_count_hidden'   => 0,

		'total_reply_count'    => 0,

		'total_topic_count'    => 0,

		'last_topic_id'        => 0,

		'last_reply_id'        => 0,

		'last_active_id'       => 0,

		'last_active_time'     => 0,

		'forum_subforum_count' => 0,

	);

	$forum_meta = bbp_parse_args( $forum_meta, $default_meta, 'insert_forum_meta' );

	// Insert forum meta

	foreach ( $forum_meta as $meta_key => $meta_value )

		update_post_meta( $forum_id, '_bbp_' . $meta_key, $meta_value );

	// Return new forum ID

	return $forum_id;

}

/** Post Form Handlers ********************************************************/

/**

 * Handles the front end forum submission

 *

 * @uses bbPress:errors::add() To log various error messages

 * @uses bbp_verify_nonce_request() To verify the nonce and check the request

 * @uses bbp_is_anonymous() To check if an anonymous post is being made

 * @uses current_user_can() To check if the current user can publish forum

 * @uses bbp_get_current_user_id() To get the current user id

 * @uses bbp_filter_anonymous_post_data() To filter anonymous data

 * @uses bbp_set_current_anonymous_user_data() To set the anonymous user cookies

 * @uses is_wp_error() To check if the value retrieved is a {@link WP_Error}

 * @uses esc_attr() For sanitization

 * @uses bbp_is_forum_category() To check if the forum is a category

 * @uses bbp_is_forum_closed() To check if the forum is closed

 * @uses bbp_is_forum_private() To check if the forum is private

 * @uses bbp_check_for_flood() To check for flooding

 * @uses bbp_check_for_duplicate() To check for duplicates

 * @uses bbp_get_forum_post_type() To get the forum post type

 * @uses remove_filter() To remove 'wp_filter_kses' filters if needed

 * @uses apply_filters() Calls 'bbp_new_forum_pre_title' with the content

 * @uses apply_filters() Calls 'bbp_new_forum_pre_content' with the content

 * @uses bbPress::errors::get_error_codes() To get the {@link WP_Error} errors

 * @uses wp_insert_post() To insert the forum

 * @uses do_action() Calls 'bbp_new_forum' with the forum id, forum id,

 *                    anonymous data and reply author

 * @uses bbp_stick_forum() To stick or super stick the forum

 * @uses bbp_unstick_forum() To unstick the forum

 * @uses bbp_get_forum_permalink() To get the forum permalink

 * @uses wp_safe_redirect() To redirect to the forum link

 * @uses bbPress::errors::get_error_messages() To get the {@link WP_Error} error

 *                                              messages

 */

function bbp_new_forum_handler() {

	// Bail if not a POST action

	if ( 'POST' !== strtoupper( $_SERVER['REQUEST_METHOD'] ) )

		return;

	// Bail if action is not bbp-new-forum

	if ( empty( $_POST['action'] ) || ( 'bbp-new-forum' !== $_POST['action'] ) )

		return;

	// Nonce check

	if ( ! bbp_verify_nonce_request( 'bbp-new-forum' ) ) {

		bbp_add_error( 'bbp_new_forum_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', 'bbpress' ) );

		return;

	}

	// Define local variable(s)

	$view_all = $anonymous_data = false;

	$forum_parent_id = $forum_author = 0;

	$forum_title = $forum_content = '';

	/** Forum Author **********************************************************/

	// User cannot create forums

	if ( !current_user_can( 'publish_forums' ) ) {

		bbp_add_error( 'bbp_forum_permissions', __( '<strong>ERROR</strong>: You do not have permission to create new forums.', 'bbpress' ) );

		return;

	}

	// Forum author is current user

	$forum_author = bbp_get_current_user_id();

	// Remove wp_filter_kses filters from title and content for capable users and if the nonce is verified

	if ( current_user_can( 'unfiltered_html' ) && !empty( $_POST['_bbp_unfiltered_html_forum'] ) && wp_create_nonce( 'bbp-unfiltered-html-forum_new' ) == $_POST['_bbp_unfiltered_html_forum'] ) {

		remove_filter( 'bbp_new_forum_pre_title',   'wp_filter_kses' );

		remove_filter( 'bbp_new_forum_pre_content', 'wp_filter_kses' );

	}

	/** Forum Title ***********************************************************/

	if ( !empty( $_POST['bbp_forum_title'] ) )

		$forum_title = esc_attr( strip_tags( $_POST['bbp_forum_title'] ) );

	// Filter and sanitize

	$forum_title = apply_filters( 'bbp_new_forum_pre_title', $forum_title );

	// No forum title

	if ( empty( $forum_title ) )

		bbp_add_error( 'bbp_forum_title', __( '<strong>ERROR</strong>: Your forum needs a title.', 'bbpress' ) );

	/** Forum Content *********************************************************/

	if ( !empty( $_POST['bbp_forum_content'] ) )

		$forum_content = $_POST['bbp_forum_content'];

	// Filter and sanitize

	$forum_content = apply_filters( 'bbp_new_forum_pre_content', $forum_content );

	// No forum content

	if ( empty( $forum_content ) )

		bbp_add_error( 'bbp_forum_content', __( '<strong>ERROR</strong>: Your forum description cannot be empty.', 'bbpress' ) );

	/** Forum Parent **********************************************************/

	// Forum parent was passed (the norm)

	if ( !empty( $_POST['bbp_forum_parent_id'] ) )

		$forum_parent_id = (int) $_POST['bbp_forum_parent_id'];

	// Filter and sanitize

	$forum_parent_id = apply_filters( 'bbp_new_forum_pre_parent_id', $forum_parent_id );

	// No forum parent was passed (should never happen)

	if ( empty( $forum_parent_id ) ) {

		bbp_add_error( 'bbp_new_forum_missing_parent', __( '<strong>ERROR</strong>: Your forum must have a parent.', 'bbpress' ) );

	// Forum exists

	} elseif ( !empty( $forum_parent_id ) ) {

		// Forum is a category

		if ( bbp_is_forum_category( $forum_parent_id ) ) {

			bbp_add_error( 'bbp_new_forum_forum_category', __( '<strong>ERROR</strong>: This forum is a category. No forums can be created in this forum.', 'bbpress' ) );

		}

		// Forum is closed and user cannot access

		if ( bbp_is_forum_closed( $forum_parent_id ) && !current_user_can( 'edit_forum', $forum_parent_id ) ) {

			bbp_add_error( 'bbp_new_forum_forum_closed', __( '<strong>ERROR</strong>: This forum has been closed to new forums.', 'bbpress' ) );

		}

		// Forum is private and user cannot access

		if ( bbp_is_forum_private( $forum_parent_id ) && !current_user_can( 'read_private_forums' ) ) {

			bbp_add_error( 'bbp_new_forum_forum_private', __( '<strong>ERROR</strong>: This forum is private and you do not have the capability to read or create new forums in it.', 'bbpress' ) );

		}

		// Forum is hidden and user cannot access

		if ( bbp_is_forum_hidden( $forum_parent_id ) && !current_user_can( 'read_hidden_forums' ) ) {

			bbp_add_error( 'bbp_new_forum_forum_hidden', __( '<strong>ERROR</strong>: This forum is hidden and you do not have the capability to read or create new forums in it.', 'bbpress' ) );

		}		

	}

	/** Forum Flooding ********************************************************/

	if ( !bbp_check_for_flood( $anonymous_data, $forum_author ) )

		bbp_add_error( 'bbp_forum_flood', __( '<strong>ERROR</strong>: Slow down; you move too fast.', 'bbpress' ) );

	/** Forum Duplicate *******************************************************/

	if ( !bbp_check_for_duplicate( array( 'post_type' => bbp_get_forum_post_type(), 'post_author' => $forum_author, 'post_content' => $forum_content, 'anonymous_data' => $anonymous_data ) ) )

		bbp_add_error( 'bbp_forum_duplicate', __( '<strong>ERROR</strong>: This forum already exists.', 'bbpress' ) );

	/** Forum Blacklist *******************************************************/

	if ( !bbp_check_for_blacklist( $anonymous_data, $forum_author, $forum_title, $forum_content ) )

		bbp_add_error( 'bbp_forum_blacklist', __( '<strong>ERROR</strong>: Your forum cannot be created at this time.', 'bbpress' ) );

	/** Forum Moderation ******************************************************/

	$post_status = bbp_get_public_status_id();

	if ( !bbp_check_for_moderation( $anonymous_data, $forum_author, $forum_title, $forum_content ) )

		$post_status = bbp_get_pending_status_id();

	/** Additional Actions (Before Save) **************************************/

	do_action( 'bbp_new_forum_pre_extras', $forum_parent_id );

	// Bail if errors

	if ( bbp_has_errors() )

		return;

	/** No Errors *************************************************************/

	// Add the content of the form to $forum_data as an array

	// Just in time manipulation of forum data before being created

	$forum_data = apply_filters( 'bbp_new_forum_pre_insert', array(

		'post_author'    => $forum_author,

		'post_title'     => $forum_title,

		'post_content'   => $forum_content,

		'post_parent'    => $forum_parent_id,

		'post_status'    => $post_status,

		'post_type'      => bbp_get_forum_post_type(),

		'comment_status' => 'closed'

	) );

	// Insert forum

	$forum_id = wp_insert_post( $forum_data );

	/** No Errors *************************************************************/

	if ( !empty( $forum_id ) && !is_wp_error( $forum_id ) ) {

		/** Trash Check *******************************************************/

		// If the forum is trash, or the forum_status is switched to

		// trash, trash it properly

		if ( ( get_post_field( 'post_status', $forum_id ) == bbp_get_trash_status_id() ) || ( $forum_data['post_status'] == bbp_get_trash_status_id() ) ) {

			// Trash the reply

			wp_trash_post( $forum_id );

			// Force view=all

			$view_all = true;

		}

		/** Spam Check ********************************************************/

		// If reply or forum are spam, officially spam this reply

		if ( $forum_data['post_status'] == bbp_get_spam_status_id() ) {

			add_post_meta( $forum_id, '_bbp_spam_meta_status', bbp_get_public_status_id() );

			// Force view=all

			$view_all = true;

		}

		/** Update counts, etc... *********************************************/

		$forum_args = array(

			'forum_id'           => $forum_id,

			'post_parent'        => $forum_parent_id,

			'forum_author'       => $forum_author,

			'last_topic_id'      => 0,

			'last_reply_id'      => 0,

			'last_active_id'     => 0,

			'last_active_time'   => 0,

			'last_active_status' => bbp_get_public_status_id()

		);

		do_action( 'bbp_new_forum', $forum_args );

		/** Additional Actions (After Save) ***********************************/

		do_action( 'bbp_new_forum_post_extras', $forum_id );

		/** Redirect **********************************************************/

		// Redirect to

		$redirect_to = !empty( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : '';

		// Get the forum URL

		$redirect_url = bbp_get_forum_permalink( $forum_id, $redirect_to );

		// Add view all?

		if ( bbp_get_view_all() || !empty( $view_all ) ) {

			// User can moderate, so redirect to forum with view all set

			if ( current_user_can( 'moderate' ) ) {

				$redirect_url = bbp_add_view_all( $redirect_url );

			// User cannot moderate, so redirect to forum

			} else {

				$redirect_url = bbp_get_forum_permalink( $forum_id );

			}

		}

		// Allow to be filtered

		$redirect_url = apply_filters( 'bbp_new_forum_redirect_to', $redirect_url, $redirect_to );

		/** Successful Save ***************************************************/

		// Redirect back to new forum

		wp_safe_redirect( $redirect_url );

		// For good measure

		exit();

	// Errors

	} else {

		$append_error = ( is_wp_error( $forum_id ) && $forum_id->get_error_message() ) ? $forum_id->get_error_message() . ' ' : '';

		bbp_add_error( 'bbp_forum_error', __( '<strong>ERROR</strong>: The following problem(s) have been found with your forum:' . $append_error, 'bbpress' ) );

	}

}

/**

 * Handles the front end edit forum submission

 *

 * @uses bbPress:errors::add() To log various error messages

 * @uses bbp_get_forum() To get the forum

 * @uses bbp_verify_nonce_request() To verify the nonce and check the request

 * @uses bbp_is_forum_anonymous() To check if forum is by an anonymous user

 * @uses current_user_can() To check if the current user can edit the forum

 * @uses bbp_filter_anonymous_post_data() To filter anonymous data

 * @uses is_wp_error() To check if the value retrieved is a {@link WP_Error}

 * @uses esc_attr() For sanitization

 * @uses bbp_is_forum_category() To check if the forum is a category

 * @uses bbp_is_forum_closed() To check if the forum is closed

 * @uses bbp_is_forum_private() To check if the forum is private

 * @uses remove_filter() To remove 'wp_filter_kses' filters if needed

 * @uses apply_filters() Calls 'bbp_edit_forum_pre_title' with the title and

 *                        forum id

 * @uses apply_filters() Calls 'bbp_edit_forum_pre_content' with the content

 *                        and forum id

 * @uses bbPress::errors::get_error_codes() To get the {@link WP_Error} errors

 * @uses wp_save_post_revision() To save a forum revision

 * @uses bbp_update_forum_revision_log() To update the forum revision log

 * @uses wp_update_post() To update the forum

 * @uses do_action() Calls 'bbp_edit_forum' with the forum id, forum id,

 *                    anonymous data and reply author

 * @uses bbp_move_forum_handler() To handle movement of a forum from one forum

 *                                 to another

 * @uses bbp_get_forum_permalink() To get the forum permalink

 * @uses wp_safe_redirect() To redirect to the forum link

 * @uses bbPress::errors::get_error_messages() To get the {@link WP_Error} error

 *                                              messages

 */

function bbp_edit_forum_handler() {

	// Bail if not a POST action

	if ( 'POST' !== strtoupper( $_SERVER['REQUEST_METHOD'] ) )

		return;

	// Bail if action is not bbp-edit-forum

	if ( empty( $_POST['action'] ) || ( 'bbp-edit-forum' !== $_POST['action'] ) )

		return;

	// Define local variable(s)

	$anonymous_data = array();

	$forum = $forum_id = $forum_parent_id = 0;

	$forum_title = $forum_content = $forum_edit_reason = '';

	/** Forum *****************************************************************/

	// Forum id was not passed

	if ( empty( $_POST['bbp_forum_id'] ) ) {

		bbp_add_error( 'bbp_edit_forum_id', __( '<strong>ERROR</strong>: Forum ID not found.', 'bbpress' ) );

		return;

	// Forum id was passed

	} elseif ( is_numeric( $_POST['bbp_forum_id'] ) ) {

		$forum_id = (int) $_POST['bbp_forum_id'];

		$forum    = bbp_get_forum( $forum_id );

	}

	// Nonce check

	if ( ! bbp_verify_nonce_request( 'bbp-edit-forum_' . $forum_id ) ) {

		bbp_add_error( 'bbp_edit_forum_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', 'bbpress' ) );

		return;

	// Forum does not exist

	} elseif ( empty( $forum ) ) {

		bbp_add_error( 'bbp_edit_forum_not_found', __( '<strong>ERROR</strong>: The forum you want to edit was not found.', 'bbpress' ) );

		return;

	// User cannot edit this forum

	} elseif ( !current_user_can( 'edit_forum', $forum_id ) ) {

		bbp_add_error( 'bbp_edit_forum_permissions', __( '<strong>ERROR</strong>: You do not have permission to edit that forum.', 'bbpress' ) );

		return;

	}

	// Remove wp_filter_kses filters from title and content for capable users and if the nonce is verified

	if ( current_user_can( 'unfiltered_html' ) && !empty( $_POST['_bbp_unfiltered_html_forum'] ) && ( wp_create_nonce( 'bbp-unfiltered-html-forum_' . $forum_id ) == $_POST['_bbp_unfiltered_html_forum'] ) ) {

		remove_filter( 'bbp_edit_forum_pre_title',   'wp_filter_kses' );

		remove_filter( 'bbp_edit_forum_pre_content', 'wp_filter_kses' );

	}

	/** Forum Parent ***********************************************************/

	// Forum parent id was passed

	if ( is_numeric( $_POST['bbp_forum_parent_id'] ) ) {

		$forum_parent_id = (int) $_POST['bbp_forum_parent_id'];

	}

	// Current forum this forum is in

	$current_parent_forum_id = bbp_get_forum_parent_id( $forum_id );

	// Forum exists

	if ( !empty( $forum_parent_id ) && ( $forum_parent_id !== $current_parent_forum_id ) ) {

		// Forum is closed and user cannot access

		if ( bbp_is_forum_closed( $forum_parent_id ) && !current_user_can( 'edit_forum', $forum_parent_id ) ) {