/**
 * Creates a navigation guard to redirect authenticated users away from auth pages
 *
 * @example
 * ```ts
 * import { createAuthGuard } from '@bagelink/auth'
 *
 * router.beforeEach(createAuthGuard({ redirectTo: '/dashboard' }))
 * ```
 */
export function createAuthGuard(config: { redirectTo?: string } = {}) {
	const { redirectTo = '/' } = config

	return async (to: any, _: any) => {
		// Import dynamically to avoid circular dependencies
		const { useAuth } = await import('./useAuth')
		const { user } = useAuth()

		// If route doesn't require auth and user is authenticated, redirect
		if (to.meta.requiresAuth === false && user.value) {
			return redirectTo
		}
		return true
	}
}