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<?php
namespace WPGraphQL\Type\PostObject\Mutation;
use GraphQL\Error\UserError;
use GraphQLRelay\Relay;
use WPGraphQL\Types;
class TermObjectDelete {
private static $mutation = [];
public static function mutate( \WP_Taxonomy $taxonomy ) {
if ( ! empty( $taxonomy->graphql_single_name ) && empty( self::$mutation[ $taxonomy->graphql_single_name ] ) ) :
$mutation_name = 'Delete' . ucwords( $taxonomy->graphql_single_name );
self::$mutation[ $taxonomy->graphql_single_name ] = Relay::mutationWithClientMutationId([
'name' => esc_html( $mutation_name ),
'description' => sprintf( esc_html__( 'Delete %1$s objects', 'wp-graphql' ), $taxonomy->graphql_single_name ),
'inputFields' => [
'id' => [
'type' => Types::non_null( Types::id() ),
'description' => sprintf( __( 'The ID of the %1$s to delete', 'wp-graphql' ), $taxonomy->graphql_single_name ),
],
],
'outputFields' => [
'deletedId' => [
'type' => Types::id(),
'description' => __( 'The ID of the deleted object', 'wp-graphql' ),
'resolve' => function( $payload ) use ( $taxonomy ) {
$deleted = (object) $payload['termObject'];
return ! empty( $deleted->term_id ) ? Relay::toGlobalId( $taxonomy->name, $deleted->term_id ) : null;
},
],
$taxonomy->graphql_single_name => [
'type' => Types::term_object( $taxonomy->name ),
'description' => __( 'The object before it was deleted', 'wp-graphql' ),
'resolve' => function( $payload ) use ( $taxonomy ) {
$deleted = (object) $payload['termObject'];
return ! empty( $deleted ) ? $deleted : null;
},
],
],
'mutateAndGetPayload' => function( $input ) use ( $taxonomy, $mutation_name ) {
$id_parts = Relay::fromGlobalId( $input['id'] );
if ( ! empty( $id_parts['id'] ) && absint( $id_parts['id'] ) ) {
$term_id = absint( $id_parts['id'] );
} else {
throw new UserError( sprintf( __( 'The ID for the %1$s was not valid', 'wp-graphql' ), $taxonomy->graphql_single_name ) );
}
if ( empty( $id_parts['type'] ) || $taxonomy->name !== $id_parts['type'] ) {
throw new UserError( sprintf( __( 'The ID passed is not for a %1$s object', 'wp-graphql' ), $taxonomy->graphql_single_name ) );
}
$term_object = get_term( $term_id, $taxonomy->name );
if ( ! current_user_can( 'delete_term', $term_object->term_id ) ) {
throw new UserError( sprintf( __( 'You do not have permission to delete %1$s', 'wp-graphql' ), $taxonomy->graphql_plural_name ) );
}
$deleted = wp_delete_term( $term_id, $taxonomy->name );
if ( is_wp_error( $deleted ) ) {
$error_message = $deleted->get_error_message();
if ( ! empty( $error_message ) ) {
throw new UserError( esc_html( $error_message ) );
} else {
throw new UserError( sprintf( __( 'The %1$s failed to delete but no error was provided', 'wp-graphql' ), $taxonomy->name ) );
}
}
return [
'termObject' => $term_object,
];
},
]);
endif;
return ! empty( self::$mutation[ $taxonomy->graphql_single_name ] ) ? self::$mutation[ $taxonomy->graphql_single_name ] : null;
}
}