import { Command } from "commander";

export interface GlobalOpts {
  json?: boolean;
}

/**
 * Read --json from the command's or any ancestor's parsed options. Commander
 * doesn't walk up the chain by default, so we do it ourselves.
 */
export function globalOpts(cmd: Command): GlobalOpts {
  let c: Command | null = cmd;
  while (c) {
    const o = c.opts() as GlobalOpts;
    if (o.json !== undefined) return { json: o.json };
    c = c.parent;
  }
  return {};
}

export function jsonOut(value: unknown): void {
  process.stdout.write(JSON.stringify(value) + "\n");
}

export function textOut(line: string): void {
  process.stdout.write(line.endsWith("\n") ? line : line + "\n");
}