<?php

/**

 * bbPress Topic 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 topic to function properly.

 *

 * @since bbPress (r3349)

 *

 * @uses bbp_parse_args()

 * @uses bbp_get_topic_post_type()

 * @uses wp_insert_post()

 * @uses update_post_meta()

 *

 * @param array $topic_data Forum post data

 * @param arrap $topic_meta Forum meta data

 */

function bbp_insert_topic( $topic_data = array(), $topic_meta = array() ) {

	// Forum

	$default_topic = array(

		'post_parent'    => 0, // forum ID

		'post_status'    => bbp_get_public_status_id(),

		'post_type'      => bbp_get_topic_post_type(),

		'post_author'    => bbp_get_current_user_id(),

		'post_password'  => '',

		'post_content'   => '',

		'post_title'     => '',

		'comment_status' => 'closed',

		'menu_order'     => 0,

	);

	// Parse args

	$topic_data = bbp_parse_args( $topic_data, $default_topic, 'insert_topic' );

	// Insert topic

	$topic_id   = wp_insert_post( $topic_data );

	// Bail if no topic was added

	if ( empty( $topic_id ) )

		return false;

	// Forum meta

	$default_meta = array(

		'author_ip'          => bbp_current_author_ip(),

		'forum_id'           => 0,

		'topic_id'           => $topic_id,

		'voice_count'        => 1,

		'reply_count'        => 0,

		'reply_count_hidden' => 0,

		'last_reply_id'      => 0,

		'last_active_id'     => $topic_id,

		'last_active_time'   => get_post_field( 'post_date', $topic_id, 'db' ),

	);

	// Parse args

	$topic_meta = bbp_parse_args( $topic_meta, $default_meta, 'insert_topic_meta' );

	// Insert topic meta

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

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

	// Update the forum

	$forum_id = bbp_get_topic_forum_id( $topic_id );

	if ( !empty( $forum_id ) )

		bbp_update_forum( array( 'forum_id' => $forum_id ) );

	// Return new topic ID

	return $topic_id;

}

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

/**

 * Handles the front end topic submission

 *

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

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

 * @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 topic

 * @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_topic_post_type() To get the topic post type

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

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

 * @uses apply_filters() Calls 'bbp_new_topic_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 topic

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

 *                    anonymous data and reply author

 * @uses bbp_stick_topic() To stick or super stick the topic

 * @uses bbp_unstick_topic() To unstick the topic

 * @uses bbp_get_topic_permalink() To get the topic permalink

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

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

 *                                              messages

 */

function bbp_new_topic_handler() {

	// Bail if not a POST action

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

		return;

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

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

		return;

	// Nonce check

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

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

		return;

	}

	// Define local variable(s)

	$view_all = false;

	$forum_id = $topic_author = $anonymous_data = 0;

	$topic_title = $topic_content = '';

	$terms = array( bbp_get_topic_tag_tax_id() => array() );

	/** Topic Author **********************************************************/

	// User is anonymous

	if ( bbp_is_anonymous() ) {

		// Filter anonymous data

		$anonymous_data = bbp_filter_anonymous_post_data();

		// Anonymous data checks out, so set cookies, etc...

		if ( !empty( $anonymous_data ) && is_array( $anonymous_data ) ) {

			bbp_set_current_anonymous_user_data( $anonymous_data );

		}

	// User is logged in

	} else {

		// User cannot create topics

		if ( !current_user_can( 'publish_topics' ) ) {

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

			return;

		}

		// Topic author is current user

		$topic_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_topic'] ) && wp_create_nonce( 'bbp-unfiltered-html-topic_new' ) == $_POST['_bbp_unfiltered_html_topic'] ) {

		remove_filter( 'bbp_new_topic_pre_title',   'wp_filter_kses' );

		remove_filter( 'bbp_new_topic_pre_content', 'wp_filter_kses' );

	}

	/** Topic Title ***********************************************************/

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

		$topic_title = esc_attr( strip_tags( $_POST['bbp_topic_title'] ) );

	// Filter and sanitize

	$topic_title = apply_filters( 'bbp_new_topic_pre_title', $topic_title );

	// No topic title

	if ( empty( $topic_title ) )

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

	/** Topic Content *********************************************************/

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

		$topic_content = $_POST['bbp_topic_content'];

	// Filter and sanitize

	$topic_content = apply_filters( 'bbp_new_topic_pre_content', $topic_content );

	// No topic content

	if ( empty( $topic_content ) )

		bbp_add_error( 'bbp_topic_content', __( '<strong>ERROR</strong>: Your topic cannot be empty.', 'bbpress' ) );

	/** Topic Forum ***********************************************************/

	// Forum id was not passed

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

		bbp_add_error( 'bbp_topic_forum_id', __( '<strong>ERROR</strong>: Forum ID is missing.', 'bbpress' ) );

	// Forum id was passed

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

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

	// Forum exists

	if ( !empty( $forum_id ) ) {

		// Forum is a category

		if ( bbp_is_forum_category( $forum_id ) )

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

		// Forum is closed and user cannot access

		if ( bbp_is_forum_closed( $forum_id ) && !current_user_can( 'edit_forum', $forum_id ) )

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

		// Forum is private and user cannot access

		if ( bbp_is_forum_private( $forum_id ) && !current_user_can( 'read_private_forums' ) )

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

		// Forum is hidden and user cannot access

		if ( bbp_is_forum_hidden( $forum_id ) && !current_user_can( 'read_hidden_forums' ) )

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

	}

	/** Topic Flooding ********************************************************/

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

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

	/** Topic Duplicate *******************************************************/

	if ( !bbp_check_for_duplicate( array( 'post_type' => bbp_get_topic_post_type(), 'post_author' => $topic_author, 'post_content' => $topic_content, 'anonymous_data' => $anonymous_data ) ) )

		bbp_add_error( 'bbp_topic_duplicate', __( '<strong>ERROR</strong>: Duplicate topic detected; it looks as though you&#8217;ve already said that!', 'bbpress' ) );

	/** Topic Blacklist *******************************************************/

	if ( !bbp_check_for_blacklist( $anonymous_data, $topic_author, $topic_title, $topic_content ) )

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

	/** Topic Status **********************************************************/

	// Maybe put into moderation

	if ( !bbp_check_for_moderation( $anonymous_data, $topic_author, $topic_title, $topic_content ) ) {

		$topic_status = bbp_get_pending_status_id();

	// Default to published

	} else {

		$topic_status = bbp_get_public_status_id();

	}

	/** Topic Tags ************************************************************/

	if ( bbp_allow_topic_tags() && !empty( $_POST['bbp_topic_tags'] ) ) {

		// Escape tag input

		$terms = esc_attr( strip_tags( $_POST['bbp_topic_tags'] ) );

		// Explode by comma

		if ( strstr( $terms, ',' ) ) {

			$terms = explode( ',', $terms );

		}

		// Add topic tag ID as main key

		$terms = array( bbp_get_topic_tag_tax_id() => $terms );

	}

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

	do_action( 'bbp_new_topic_pre_extras', $forum_id );

	// Bail if errors

	if ( bbp_has_errors() )

		return;

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

	// Add the content of the form to $topic_data as an array.

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

	$topic_data = apply_filters( 'bbp_new_topic_pre_insert', array(

		'post_author'    => $topic_author,

		'post_title'     => $topic_title,

		'post_content'   => $topic_content,

		'post_status'    => $topic_status,

		'post_parent'    => $forum_id,

		'post_type'      => bbp_get_topic_post_type(),

		'tax_input'      => $terms,

		'comment_status' => 'closed'

	) );

	// Insert topic

	$topic_id = wp_insert_post( $topic_data );

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

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

		/** Stickies **********************************************************/

		if ( !empty( $_POST['bbp_stick_topic'] ) && in_array( $_POST['bbp_stick_topic'], array( 'stick', 'super', 'unstick' ) ) ) {

			// What's the haps?

			switch ( $_POST['bbp_stick_topic'] ) {

				// Sticky in this forum

				case 'stick'   :

					bbp_stick_topic( $topic_id );

					break;

				// Super sticky in all forums

				case 'super'   :

					bbp_stick_topic( $topic_id, true );

					break;

				// We can avoid this as it is a new topic

				case 'unstick' :

				default        :

					break;

			}

		}

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

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

		// trash, trash it properly

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

			// Trash the reply

			wp_trash_post( $topic_id );

			// Force view=all

			$view_all = true;

		}

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

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

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

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

			// Force view=all

			$view_all = true;

		}

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

		do_action( 'bbp_new_topic', $topic_id, $forum_id, $anonymous_data, $topic_author );

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

		do_action( 'bbp_new_topic_post_extras', $topic_id );

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

		// Redirect to

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

		// Get the topic URL

		$redirect_url = bbp_get_topic_permalink( $topic_id, $redirect_to );

		// Add view all?

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

			// User can moderate, so redirect to topic 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_topic_redirect_to', $redirect_url, $redirect_to, $topic_id );

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

		// Redirect back to new topic

		wp_safe_redirect( $redirect_url );

		// For good measure

		exit();

	// Errors

	} else {

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

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

	}

}

/**

 * Handles the front end edit topic submission

 *

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

 * @uses bbp_get_topic() To get the topic

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

 * @uses bbp_is_topic_anonymous() To check if topic is by an anonymous user

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

 * @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_topic_pre_title' with the title and

 *                        topic id

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

 *                        and topic id

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

 * @uses wp_save_post_revision() To save a topic revision

 * @uses bbp_update_topic_revision_log() To update the topic revision log

 * @uses bbp_stick_topic() To stick or super stick the topic

 * @uses bbp_unstick_topic() To unstick the topic

 * @uses wp_update_post() To update the topic

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

 *                    anonymous data and reply author

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

 *                                 to another

 * @uses bbp_get_topic_permalink() To get the topic permalink

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

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

 *                                              messages

 */

function bbp_edit_topic_handler() {

	// Bail if not a POST action

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

		return;

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

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

		return;

	// Define local variable(s)

	$revisions_removed = false;

	$topic = $topic_id = $topic_author = $forum_id = $anonymous_data = 0;

	$topic_title = $topic_content = $topic_edit_reason = '';

	/** Topic *****************************************************************/

	// Topic id was not passed

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

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

		return;

	// Topic id was passed

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

		$topic_id = (int) $_POST['bbp_topic_id'];

		$topic    = bbp_get_topic( $topic_id );

	}

	// Topic does not exist

	if ( empty( $topic ) ) {

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

		return;

	// Topic exists

	} else {

		// Check users ability to create new topic

		if ( ! bbp_is_topic_anonymous( $topic_id ) ) {

			// User cannot edit this topic

			if ( !current_user_can( 'edit_topic', $topic_id ) ) {

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

			}

			// Set topic author

			$topic_author = bbp_get_topic_author_id( $topic_id );

		// It is an anonymous post

		} else {

			// Filter anonymous data

			$anonymous_data = bbp_filter_anonymous_post_data( array(), true );

		}

	}

	// Nonce check

	if ( ! bbp_verify_nonce_request( 'bbp-edit-topic_' . $topic_id ) ) {

		bbp_add_error( 'bbp_edit_topic_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', '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_topic'] ) && ( wp_create_nonce( 'bbp-unfiltered-html-topic_' . $topic_id ) == $_POST['_bbp_unfiltered_html_topic'] ) ) {

		remove_filter( 'bbp_edit_topic_pre_title',   'wp_filter_kses' );

		remove_filter( 'bbp_edit_topic_pre_content', 'wp_filter_kses' );

	}

	/** Topic Forum ***********************************************************/

	// Forum id was not passed

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

		bbp_add_error( 'bbp_topic_forum_id', __( '<strong>ERROR</strong>: Forum ID is missing.', 'bbpress' ) );

	// Forum id was passed

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

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

	}

	// Current forum this topic is in

	$current_forum_id = bbp_get_topic_forum_id( $topic_id );

	// Forum exists

	if ( !empty( $forum_id ) && ( $forum_id !== $current_forum_id ) ) {

		// Forum is a category

		if ( bbp_is_forum_category( $forum_id ) )

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

		// Forum is closed and user cannot access

		if ( bbp_is_forum_closed( $forum_id ) && !current_user_can( 'edit_forum', $forum_id ) )

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

		// Forum is private and user cannot access

		if ( bbp_is_forum_private( $forum_id ) && !current_user_can( 'read_private_forums' ) )

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

		// Forum is hidden and user cannot access

		if ( bbp_is_forum_hidden( $forum_id ) && !current_user_can( 'read_hidden_forums' ) )

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

	}

	/** Topic Title ***********************************************************/

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

		$topic_title = esc_attr( strip_tags( $_POST['bbp_topic_title'] ) );