Allow users delete their posts

This is the code for that section, but you’ll need to see if it works, sorry, but I do not have time to make a code snippet for the hundreds of things that my plugin does.

///********allow users to trash own topics/replies


if (!empty($bsp_style_settings_t['participant_trash_topic']) && is_user_logged_in()) { 
	/*Customize the BBPress roles to allow Participants to trash topics*/
	add_filter( 'bbp_get_caps_for_role', 'bsp_add_topic_caps_filter', 10, 2 );
	/*then only allow participants to trash their own topics*/
	add_filter( 'bbp_map_topic_meta_caps', 'bsp_tweak_trash_topic_caps', 11, 4 );
	//then redirect to the forum after trashing topic
	add_action('bbp_template_redirect', 'bsp_trash_topic_check', 8);
}

if (!empty($bsp_style_settings_t['participant_trash_reply']) && is_user_logged_in()) { 
	/*Customize the BBPress roles to allow Participants to trash replies*/
	add_filter( 'bbp_get_caps_for_role', 'bsp_add_reply_caps_filter', 10, 2 );
	/*then only allow participants to trash their own replies*/
	add_filter( 'bbp_map_reply_meta_caps', 'bsp_tweak_trash_reply_caps', 11, 4 );
}

function bsp_add_topic_caps_filter( $caps, $role ){
        // Only filter for roles we are interested in!
        if( $role == bbp_get_participant_role() ) {
		//only change delete topics 
		$caps ['delete_topics']= true;
	}
	return $caps;
}

function bsp_add_reply_caps_filter( $caps, $role ){
        // Only filter for roles we are interested in!
        if( $role == bbp_get_participant_role() ) {
		//only change delete topics 
		$caps ['delete_replies']= true;
	}
	return $caps;
}

function bsp_tweak_trash_topic_caps( $caps, $cap, $user_id, $args ){
	// apply only to delete_topic
	if ( $cap == "delete_topic" ){
		// Get the post
		$_post = get_post( $args[0] );
		if ( !empty( $_post ) ) {

                        // Get caps for post type object
                        $post_type = get_post_type_object( $_post->post_type );

                        // Add 'do_not_allow' cap if user is spam or deleted
                        if ( bbp_is_user_inactive( $user_id ) ) {
                                $caps[] = 'do_not_allow';

                        // Moderators can always edit forum content
                        } elseif ( user_can( $user_id, 'moderate' ) ) {
                                $caps[] = 'moderate';

                        // User is author so allow edit if not in admin
                        } elseif ( user_can( $user_id, 'participate' ) && ( (int) $user_id === (int) $_post->post_author ) ) {
                                $caps = array();

                        // Unknown so do not allow
                        } else {
                                $caps[] = 'do_not_allow';
                        }
		}
	}	
	// return the capabilities
	return $caps;
}


function bsp_tweak_trash_reply_caps( $caps, $cap, $user_id, $args ){
	// apply only to delete_reply
	if ( $cap == "delete_reply" ){
		// Get the post
		$_post = get_post( $args[0] );
		if ( !empty( $_post ) ) {

			// Get caps for post type object
			$post_type = get_post_type_object( $_post->post_type );
			
			// Add 'do_not_allow' cap if user is spam or deleted
			if ( bbp_is_user_inactive( $user_id ) ) {
				$caps[] = 'do_not_allow';

			// Moderators can always edit forum content
			} elseif ( user_can( $user_id, 'moderate' ) ) {
				$caps[] = 'moderate';

			// User is author so allow edit if not in admin
                        } elseif ( user_can( $user_id, 'participate' ) && ( (int) $user_id === (int) $_post->post_author ) ) {
                                $caps = array();
				
			// Unknown so do not allow
			} else {
				$caps[] = 'do_not_allow';
			}
		}
	}	
	// return the capabilities
	return $caps;
}

//check if topic has been trashed by author and show forum if it has
function bsp_trash_topic_check() {
	$topic_slug = get_option( '_bbp_topic_slug');
	//quick check if we need to do this function, so bail if not a topic
	if (strpos($_SERVER['REQUEST_URI'], $topic_slug) == FALSE) return;
	$forum_slug = bbp_get_root_slug();
	//if check is set (ie we prefix forums with the forum slug) then part 1 will be forum slug and part 2 will be topic slug, if not part 1 will be topic slug
	$check = bbp_include_root_slug();
	$link = explode('/', $_SERVER['REQUEST_URI']);
	//next we need the topic id (post id) of the topic so we need to check if it is a topic and if so, find the topic id
	if ($check && $link[1] == $forum_slug && $link[2] == $topic_slug ) {
		$post = bsp_get_page_by_slug( $link[3], OBJECT, 'topic' );
		if (!empty ($post)) $login_check=1;
        } 
	elseif (empty($check) && $link[1] === $topic_slug) {
		$post = bsp_get_page_by_slug( $link[2], OBJECT, 'topic' );
		if (!empty ($post)) $login_check=1;
	}
	//now we need to check if the topic has been trashed by author
	if (!empty ($login_check) && $post->post_status == 'trash' && $post->post_author == get_current_user_id() ) {
		$topic_id = $post->ID;
		//then redirect to the forum we came from
		$forum = bbp_get_forum_permalink (bbp_get_topic_forum_id ( $topic_id ));
		wp_redirect ($forum);
		exit;
	}
	else return;
}