import { CaretNode, h, t, VNode } from "@caret-js/core";
import { CommaListNode } from "./commaList";
import { MathExpressionTag } from "../tags/mathExpression";

export class FunctionCallNode extends CaretNode {
  constructor(public name: string, public args: CaretNode[] = []) {
    super();
    this.addTag(new MathExpressionTag());
  }

  static from(name: string, args: CaretNode[] = []): FunctionCallNode {
    args = args.flatMap((node) =>
      node instanceof CommaListNode ? node.expressions : [node]
    );
    return new FunctionCallNode(name, args).mergeTagsFromNodes(
      args.filter((node) => node instanceof CommaListNode)
    );
  }

  toDebugMathML(): VNode {
    return h(
      "mrow",
      {},
      h("mi", {}, t(this.name)),
      h("mo", { stretchy: "true" }, t("(")),
      ...this.args.flatMap((arg, index) => [
        arg.toDebugMathML(),
        index < this.args.length - 1 ? h("mo", {}, t(",")) : null,
      ]),
      h("mo", { stretchy: "true" }, t(")"))
    );
  }
}