// 用法: node scripts/hash-users.js
// 读取 users.json 中的明文密码，哈希后写回

const { createHash, randomBytes } = require("crypto");
const fs = require("fs");
const path = require("path");

function hashPassword(password, salt) {
  return createHash("sha256").update(salt + password).digest("hex");
}

const usersPath = path.join(__dirname, "..", "users.json");

if (!fs.existsSync(usersPath)) {
  console.error("users.json 不存在");
  process.exit(1);
}

const data = JSON.parse(fs.readFileSync(usersPath, "utf-8"));
const users = data.users || [];

let changed = false;
for (const user of users) {
  // 已经哈希过的跳过
  if (user.passwordHash && user.salt) continue;
  // 没有明文密码的跳过
  if (!user.password) continue;

  const salt = randomBytes(16).toString("hex");
  const passwordHash = hashPassword(user.password, salt);
  user.passwordHash = passwordHash;
  user.salt = salt;
  delete user.password;
  changed = true;
}

if (changed) {
  fs.writeFileSync(usersPath, JSON.stringify(data, null, 2) + "\n");
  console.log("密码哈希完成");
} else {
  console.log("所有密码已哈希，无需处理");
}