import spawn from "../utils/spawn.js";
import gitLogger from "./utils/gitLogger.js";

/**
 * Get the tag of the last release
 * @param prefix only consider tag that has this prefix. Will return the last tag of the current branch by default.
 * @return an array containing the last tag and the process that was spawned
 */
export default async function ({
  prefix,
  onBranch,
}: { prefix?: string; onBranch?: string } = {}): Promise<string> {
  const gitParams = ["describe", "--tags", "--abbrev=0"];
  if (prefix) {
    gitParams.push(`--match=${prefix}*`);
  }
  if (onBranch) {
    gitParams.push(`${onBranch}`);
  }
  const gitPs = await spawn("git", gitParams, gitLogger);

  return gitPs.stdout.trim();
}