set_query_params([
'page' => $page,
'per_page' => $per_page,
]);
$response = rest_do_request( $request );
$pages = $response->headers['X-WP-TotalPages'];
$data = rest_get_server()->response_to_data( $response, true );
$books = [];
foreach ( $data as $key => $book ) {
$book['title'] = $book['metadata']['name'];
$book['date-published'] = ( isset( $book['metadata']['datePublished'] ) ) ?
$book['metadata']['datePublished'] :
'';
$book['subject'] = ( isset( $book['metadata']['about'][0] ) )
? $book['metadata']['about'][0]['identifier']
: '';
$books[] = $book;
}
if ( $orderby === 'latest' ) {
$books = wp_list_sort( $books, $orderby, 'desc' );
} else {
$books = wp_list_sort( $books, $orderby );
}
return [ 'pages' => $pages, 'books' => $books ];
} else {
return [ 'pages' => 0, 'books' => [] ];
}
}
/**
* Get licenses for catalog display.
*
* @return array
*/
function get_catalog_licenses() {
if ( defined( 'PB_PLUGIN_VERSION' ) ) {
$licenses = ( new \Pressbooks\Licensing() )->getSupportedTypes();
foreach ( $licenses as $key => $value ) {
$licenses[ $key ] = preg_replace( '/\([^)]+\)/', '', $value['desc'] );
}
return $licenses;
}
return [];
}
/**
* Get licenses currently in use.
*
* @param array $catalog_data
* @return array
*/
function get_available_licenses( $catalog_data ) {
$licenses = [];
$licensing = new \Pressbooks\Licensing();
foreach ( $catalog_data['books'] as $book ) {
$license = $licensing->getLicenseFromUrl( $book['metadata']['license']['url'] );
if ( ! in_array( $license, $licenses, true ) ) {
$licenses[] = $license;
}
}
return $licenses;
}
/**
* Get subjects currently in use.
*
* @param array $catalog_data
* @return array
*/
function get_available_subjects( $catalog_data ) {
$subjects = [];
foreach ( $catalog_data['books'] as $book ) {
if ( ! empty( $book['subject'] ) ) {
$subjects[ substr( $book['subject'], 0, 1 ) ][] = substr( $book['subject'], 0, 2 );
}
}
return $subjects;
}
/**
* Return the default (non-page) menu items.
*
* @param string $items
* @return string $items
*/
function get_default_menu( $items = '' ) {
$link = ( is_front_page() ) ? network_home_url( '#main' ) : network_home_url( '/' );
$items = sprintf(
'%2$s',
$link,
__( 'Home', 'pressbooks-aldine' )
) . $items;
if ( get_option( 'pb_network_contact_form' ) ) {
$items .= sprintf(
'%2$s',
'#contact',
__( 'Contact', 'pressbooks-aldine' )
);
}
if ( ! is_user_logged_in() ) {
$items .= sprintf(
'%2$s',
wp_login_url( get_permalink() ),
__( 'Sign In', 'pressbooks-aldine' )
);
if ( in_array( get_site_option( 'registration' ), [ 'user', 'all' ], true ) ) {
$items .= sprintf(
'%2$s',
network_home_url( '/wp-signup.php' ),
__( 'Sign Up', 'pressbooks-aldine' )
);
}
} else {
if ( is_super_admin() || is_user_member_of_blog() ) {
$items .= sprintf(
'%2$s',
admin_url(),
__( 'Admin', 'pressbooks-aldine' )
);
}
$items .= sprintf(
'%2$s',
wp_logout_url( get_permalink() ),
__( 'Sign Out', 'pressbooks-aldine' )
);
}
/* @codingStandardsIgnoreStart $items .= sprintf(
'',
get_search_form( false )
); @codingStandardsIgnoreEnd */
return $items;
}
/**
* Echo the default menu.
*
* @param string $items
* @return null
*/
function default_menu( $args = [], $items = '' ) {
printf(
"<{$args['container']} id='{$args['container_id']}' class='{$args['container_class']}'>",
get_default_menu( $items )
);
}
/**
*
* Handler for contact form submissions.
*
* @return false | array
*/
function handle_contact_form_submission() {
if ( ! isset( $_POST['pb_root_contact_form_nonce'] ) || ! wp_verify_nonce( $_POST['pb_root_contact_form_nonce'], 'pb_root_contact_form' ) ) {
return; // Security check failed.
}
if ( isset( $_POST['submitted'] ) ) {
$output = [];
$name = ( isset( $_POST['visitor_name'] ) ) ? $_POST['visitor_name'] : '';
$email = ( isset( $_POST['visitor_email'] ) ) ? $_POST['visitor_email'] : '';
$institution = ( isset( $_POST['visitor_institution'] ) ) ? $_POST['visitor_institution'] : '';
$message = ( isset( $_POST['message'] ) ) ? $_POST['message'] : '';
$output['values'] = [
'visitor_name' => esc_attr( $name ),
'visitor_email' => sanitize_email( $email ),
'visitor_institution' => esc_attr( $institution ),
'message' => esc_textarea( $message ),
];
if ( empty( $name ) ) {
$output['message'] = __( 'Name is required.', 'pressbooks-aldine' );
$output['status'] = 'error';
$output['field'] = 'visitor_name';
} elseif ( empty( $email ) ) {
$output['message'] = __( 'Email is required.', 'pressbooks-aldine' );
$output['status'] = 'error';
$output['field'] = 'visitor_email';
} elseif ( ! filter_var( $email, FILTER_VALIDATE_EMAIL ) ) {
$output['message'] = __( 'Email is invalid.', 'pressbooks-aldine' );
$output['status'] = 'error';
$output['field'] = 'visitor_email';
} elseif ( empty( $institution ) ) {
$output['message'] = __( 'Institution is required.', 'pressbooks-aldine' );
$output['status'] = 'error';
$output['field'] = 'visitor_institution';
} elseif ( empty( $message ) ) {
$output['message'] = __( 'Message is required.', 'pressbooks-aldine' );
$output['status'] = 'error';
$output['field'] = 'message';
} else {
$sent = wp_mail(
get_option( 'admin_email' ),
sprintf( __( 'Contact Form Submission from %s', 'pressbooks-aldine' ), $name ),
sprintf(
"From: %1\$s <%2\$s>\nInstitution: %3\$s\n\n%4\$s",
stripslashes( $name ),
$email,
stripslashes( $institution ),
strip_tags( $message )
),
"From: ${email}\r\nReply-To: ${email}\r\n"
);
if ( $sent ) {
$output['message'] = __( 'Your message was sent!', 'pressbooks-aldine' );
$output['status'] = 'success';
} else {
$output['message'] = __( 'Your message could not be sent.', 'pressbooks-aldine' );
$output['status'] = 'error';
}
}
return $output;
}
return;
}
/**
* Does a page have page sections?
*
* @param int $post_id The page.
* @return bool
*/
function has_sections( $post_id ) {
$post_content = get_post_field( 'post_content', $post_id );
if ( ! empty( $post_content ) ) {
if ( strpos( $post_content, 'page-section' ) ) {
return true;
} else {
return false;
}
}
return false;
}
/**
* Maybe truncate a string to a sensible length.
*
* @param string $string The string.
* @param int $length Max length in characters.
*
* @return string
*/
function maybe_truncate_string( $string, $length = 40 ) {
if ( strlen( $string ) > $length ) {
return substr( $string, 0, strpos( wordwrap( $string, $length ), "\n" ) ) . '…';
}
return $string;
}