import type { IntrospectedInterface } from "../gir/introspected-classes.ts";
import { GirVisitor } from "../visitor.ts";

export class InterfaceVisitor extends GirVisitor {
	visitInterface = (node: IntrospectedInterface): IntrospectedInterface => {
		// If an interface does not list a prerequisite type, we fill it with GObject.Object
		if (!node.noParent && node.superType == null) {
			const gobject = node.namespace.assertInstalledImport("GObject");
			const GObject = gobject.assertClass("Object");

			if (!GObject) {
				throw new Error(`GObject.Object could not be found while generating ${node.namespace.namespace}.${node.name}`);
			}

			node.superType = GObject.getType();
		}

		return node;
	};
}