thi-ng/umbrella

import type { IToHiccup } from "@thi.ng/api";
import { deref } from "@thi.ng/api/deref";
import { isFunction } from "@thi.ng/checks/is-function";
import type { ANode } from "./anode.js";

/**
 * `IToHiccup` implementation Node2D/3D
 *
 * @param node -
 * @param ctx -
 *
 * @internal
 */
export const toHiccup = <T extends ANode<T> & IToHiccup>(
    node: T,
    ctx?: any
) => {
    const body = isFunction(node.body) ? node.body(ctx) : deref(node.body);
    return node.enabled && node.display
        ? node.children.length
            ? [
                    "g",
                    {},
                    node.body
                        ? ["g", { transform: node.mat }, body]
                        : undefined,
                    ...node.children.map((c) => c.toHiccup(ctx)),
              ]
            : body
            ? ["g", { transform: node.mat }, body]
            : undefined
        : undefined;
};