biblical-guide.com/hooks/use-auth.ts

import { useEffect } from 'react'
import { useStore } from '@/lib/store'

export function useAuth() {
  const { user, setUser } = useStore()

  useEffect(() => {
    const token = localStorage.getItem('authToken')
    if (token && !user) {
      // Validate token and get user info
      fetch('/api/auth/me', {
        headers: {
          'Authorization': `Bearer ${token}`
        }
      })
      .then(res => res.json())
      .then(data => {
        if (data.user) {
          setUser(data.user)
        } else {
          localStorage.removeItem('authToken')
        }
      })
      .catch(() => {
        localStorage.removeItem('authToken')
      })
    }
  }, [user, setUser])

  const logout = () => {
    setUser(null)
    localStorage.removeItem('authToken')
  }

  const isAuthenticated = !!user
  const token = typeof window !== 'undefined' ? localStorage.getItem('authToken') : null

  return {
    user,
    isAuthenticated,
    token,
    logout
  }
}