import { defu } from 'defu'

export const useApiFetch = <T>(request: string, options: Parameters<typeof $fetch>[1] = {}) => {
  const config = useRuntimeConfig()
  const tokenCookie = useCookie('auth_token')
  const tokenState = useState<string | null>('auth_token_state')

  const tokenValue = tokenState.value ?? tokenCookie.value

  const defaults: Parameters<typeof $fetch>[1] = {
    baseURL: config.public.api as string,
    headers: tokenValue ? { Authorization: `Bearer ${tokenValue}` } : {},
  }

  const params = defu(options, defaults)

  try {
    if (params?.body && typeof FormData !== 'undefined' && params.body instanceof FormData) {
      if (params.headers && 'Content-Type' in params.headers) {
        delete params.headers['Content-Type']
      }
    }
  } catch (e) {}

  return $fetch<T>(request, params).catch((err: any) => {
    const status = err?.statusCode || err?.status || err?.response?.status

    if (status === 401 || status === 403) {
      try {
        tokenCookie.value = null
        tokenState.value = null
        const authUser = useState('auth_user')
        authUser.value = null
        
        console.error(`[API] Authentication error (${status}) - token cleared`)
      } catch (e) {
        console.error('[API] Error clearing auth state:', e)
      }

      try {
        navigateTo('/auth/login')
      } catch (e) { 
        console.error('[API] Error navigating to login:', e)
      }
    }

    throw err
  })
}