@maxlkatze/cms/dist/runtime/client/composables/cms/useAuthentication.js

A git based Nuxt Module CMS - zero effort, zero cost

import { jwtVerify, SignJWT } from "jose";
import { ref } from "vue";
export const useAuthentication = () => {
  const userState = ref(null);
  const generateToken = async (payload, secretKey, expiresIn = "24h") => {
    const expirationTime = getExpirationTime(expiresIn);
    const encoder = new TextEncoder();
    return await new SignJWT(payload).setProtectedHeader({ alg: "HS256" }).setIssuedAt().setExpirationTime(Math.floor(Date.now() / 1e3) + expirationTime).sign(encoder.encode(secretKey));
  };
  const verifyToken = async (token, secretKey) => {
    try {
      const encoder = new TextEncoder();
      await jwtVerify(token, encoder.encode(secretKey));
      return true;
    } catch {
      return false;
    }
  };
  const decodeToken = (token) => {
    try {
      const payloadBase64 = token.split(".")[1];
      const payloadJson = atob(payloadBase64);
      return JSON.parse(payloadJson);
    } catch {
      return null;
    }
  };
  const setToken = (token, expiresInDays = 7) => {
    if (!token) return;
    if (import.meta.client) {
      localStorage.setItem("auth_token", token);
    }
    try {
      if (import.meta.client) {
        document.cookie = `auth_token=${token}; max-age=${expiresInDays * 24 * 60 * 60}; path=/; ${process.env.NODE_ENV === "production" ? "secure; " : ""}samesite=strict`;
      } else {
      }
      userState.value = decodeToken(token);
    } catch (error) {
      console.error("Error setting cookie:", error);
    }
  };
  const getToken = () => {
    if (import.meta.server) {
      return null;
    }
    const cookies = document.cookie.split(";");
    for (const cookie of cookies) {
      const [name, value] = cookie.trim().split("=");
      if (name === "auth_token") return value;
    }
    return localStorage.getItem("auth_token");
  };
  const removeToken = () => {
    if (import.meta.client) {
      localStorage.removeItem("auth_token");
      document.cookie = "auth_token=; max-age=0; path=/;";
    }
    userState.value = null;
  };
  const getExpirationTime = (timeString) => {
    const match = timeString.match(/^(\d+)([hdms])$/);
    if (!match) return 24 * 60 * 60;
    const value = Number.parseInt(match[1], 10);
    const unit = match[2];
    switch (unit) {
      case "h":
        return value * 60 * 60;
      case "d":
        return value * 24 * 60 * 60;
      case "m":
        return value * 60;
      case "s":
        return value;
      default:
        return 24 * 60 * 60;
    }
  };
  return {
    generateToken,
    verifyToken,
    decodeToken,
    setToken,
    getToken,
    removeToken,
    user: userState
  };
};