import { AbTestBlock, SessionState } from "indite-js/schemas";
import { ExecuteLogicResponse } from "../../../types";
import { defaultAbTestOptions } from "indite-js/schemas/features/blocks/logic/abTest/constants";

export const executeAbTest = (
  _: SessionState,
  block: AbTestBlock
): ExecuteLogicResponse => {
  const aEdgeId = block.items[0].outgoingEdgeId;
  const random = Math.random() * 100;
  if (
    random < (block.options?.aPercent ?? defaultAbTestOptions.aPercent) &&
    aEdgeId
  ) {
    return { outgoingEdgeId: aEdgeId };
  }
  const bEdgeId = block.items[1].outgoingEdgeId;
  if (bEdgeId) return { outgoingEdgeId: bEdgeId };
  return { outgoingEdgeId: block.outgoingEdgeId };
};