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

export class ExponentNode extends CaretNode {
  constructor(public base: CaretNode, public power: CaretNode) {
    super();
    this.addTag(new MathExpressionTag());
  }

  static from(base: CaretNode, power: CaretNode): ExponentNode {
    return new ExponentNode(base, power);
  }

  toDebugMathML(): VNode {
    if (this.base instanceof SubscriptNode) {
      return h(
        "msubsup",
        {},
        this.base.child.toDebugMathML(),
        this.base.subscript.toDebugMathML(),
        this.power.toDebugMathML()
      );
    }

    return h("msup", {}, this.base.toDebugMathML(), this.power.toDebugMathML());
  }
}