import type { TenantContext } from '~/types'

/**
 * 获取当前租户上下文
 * 服务端从 event.context.tenant 获取（由 Server Middleware 设置）
 * 客户端从 SSR 注入的 payload 获取
 */
export function useTenant() {
  const ctx = useState<TenantContext>('tenant-context', () => ({
    tenantId: useRuntimeConfig().public.tenantId as string,
    appId: useRuntimeConfig().public.appId as string,
    templateId: useRuntimeConfig().public.templateId as string,
    source: 'env'
  }))

  // SSR 时从服务端请求头获取
  if (import.meta.server) {
    const event = useRequestEvent()
    if (event?.context?.tenant) {
      ctx.value = event.context.tenant as TenantContext
    }
  }

  return ctx
}