import type { RunnableNodeConfig } from "../types";

type BinaryKeepingRunnableNodeConfig = RunnableNodeConfig &
  Readonly<{
    keepBinaries?: boolean;
  }>;

type MergeJsonRunnableNodeConfig = RunnableNodeConfig &
  Readonly<{
    mergeJson?: boolean;
  }>;

export type RunnableOutputBehavior = Readonly<{
  keepBinaries: boolean;
  mergeJson: boolean;
}>;

export class RunnableOutputBehaviorResolver {
  resolve(config: RunnableNodeConfig): RunnableOutputBehavior {
    return {
      keepBinaries: this.isKeepBinariesEnabled(config),
      mergeJson: this.isMergeJsonEnabled(config),
    };
  }

  private isKeepBinariesEnabled(config: RunnableNodeConfig): boolean {
    const candidate = config as BinaryKeepingRunnableNodeConfig;
    return candidate.keepBinaries === true;
  }

  private isMergeJsonEnabled(config: RunnableNodeConfig): boolean {
    const candidate = config as MergeJsonRunnableNodeConfig;
    return candidate.mergeJson === true;
  }
}