interface Semver {
  major: number;
  minor: number;
  patch: number;
}

type BumpType = "major" | "minor" | "patch";

export function parseSemver(version: string): Semver {
  const parts = version.split(".");
  if (parts.length !== 3) {
    throw new Error(`无效的版本号格式: ${version}`);
  }
  const [major, minor, patch] = parts.map((p) => {
    const n = Number(p);
    if (Number.isNaN(n) || !Number.isInteger(n) || n < 0) {
      throw new Error(`无效的版本号格式: ${version}`);
    }
    return n;
  });
  return { major: major!, minor: minor!, patch: patch! };
}

export function bumpVersion(current: string, type: BumpType): string {
  const semver = parseSemver(current);
  switch (type) {
    case "major":
      return `${semver.major + 1}.0.0`;
    case "minor":
      return `${semver.major}.${semver.minor + 1}.0`;
    case "patch":
      return `${semver.major}.${semver.minor}.${semver.patch + 1}`;
  }
}

async function main(): Promise<void> {
  // 后续 task 中实现流程编排
  console.log("release 脚本骨架就绪");
}

main().catch((err: unknown) => {
  console.error(err instanceof Error ? err.message : String(err));
  process.exit(1);
});