/**
 * htmx Auth Refresh Extension
 *
 * Automatically refreshes the OAuth session before HTMX requests.
 * This ensures that the access token is valid before navigation,
 * preventing users from being redirected to login mid-navigation.
 */

import type { HtmxApi, HtmxConfirmEvent } from '../types'
import { refreshSession } from '../auth'

export function initAuthRefreshExtension(htmx: HtmxApi): void {
  htmx.defineExtension('auth-refresh', {
    onEvent(name: string, evt: HtmxConfirmEvent) {
      if (name === 'htmx:confirm') {
        // Prevent the default request behavior
        evt.preventDefault()

        // Refresh session, then issue the request
        refreshSession()
          .catch((error) => {
            console.warn('Auth refresh before request failed:', error)
          })
          .finally(() => {
            // Always issue the request, even if refresh failed
            // The server will handle 401 responses appropriately
            evt.detail.issueRequest()
          })
      }
    },
  })
}