add countdown.

src/oj/contest/components/ContestMenu.vue

@@ -2,6 +2,7 @@
 import { DropdownOption } from "naive-ui"
 import { useContestStore } from "oj/store/contest"
 import { isDesktop } from "~/shared/composables/breakpoints"
+import { ContestStatus } from "~/utils/constants"
 
 const route = useRoute()
 const router = useRouter()
@@ -10,7 +11,7 @@ const contestStore = useContestStore()
 const contestMenuVisible = computed(() => {
   if (contestStore.isContestAdmin) return true
   if (!contestStore.isPrivate) {
-    // TODO:这里没有完成
+    return contestStore.contestStatus !== ContestStatus.not_started
   }
   return contestStore.access
 })

src/oj/contest/components/ContestTitle.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
-import { Contest } from "~/utils/types"
-import { ContestType } from "~/utils/constants"
+import { Contest } from "utils/types"
+import { ContestType } from "utils/constants"
 
 defineProps<{ contest: Contest }>()
 </script>
@@ -8,6 +8,7 @@ defineProps<{ contest: Contest }>()
   <n-space>
     <span>{{ contest.title }}</span>
     <n-icon
+      size="medium"
       class="lockIcon"
       v-if="contest.contest_type === ContestType.private"
     >