import { getInjectedPlatformContext } from './platformContextHelpers'

function normalizePluginRoutePrefix(prefix: string | undefined): string | undefined {
  const candidate = prefix?.trim()
  if (!candidate) return undefined

  const path = candidate.split('/').filter(Boolean).join('/')
  return path ? `/${path}/` : '/'
}

/**
 * Resolve the Vue Router base for a plugin frontend.
 *
 * Integrated plugins use the platform-injected mount prefix. Standalone and
 * development builds retain the caller's Vite base unchanged.
 */
export function resolvePluginFrontendBase(fallbackBase: string = '/'): string {
  const context = getInjectedPlatformContext()
  if (!context?.isIntegrated) return fallbackBase

  return normalizePluginRoutePrefix(context.plugin?.route_prefix) ?? fallbackBase
}