fix: refactor the theme and post preview feature to solve the session expiration issue (#5518)

#### What type of PR is this?

/area ui
/kind bug
/milestone 2.14.x

#### What this PR does / why we need it:

重构文章预览和主题预览的页面加载方式，尝试解决在某些情况下打开预览导致登录 session 失效的问题。

#### Which issue(s) this PR fixes:

Fixes https://github.com/halo-dev/halo/issues/4047

#### Special notes for your reviewer:

需要测试：

1. 主题预览中的各个功能是否正常。
2. 文章预览功能是否正常。

#### Does this PR introduce a user-facing change?

```release-note
修复在某些情况下，打开文章预览或主题预览之后导致登录失效的问题。
```

ui/console-src/modules/contents/pages/SinglePageEditor.vue

@@ -433,10 +433,10 @@ async function handleUploadImage(file: File, options?: AxiosRequestConfig) {
   />
 
   <UrlPreviewModal
-    v-if="isUpdateMode"
-    v-model:visible="previewModal"
+    v-if="previewModal"
     :title="formState.page.spec.title"
     :url="`/preview/singlepages/${formState.page.metadata.name}`"
+    @close="previewModal = false"
   />
 
   <VPageHeader :title="$t('core.page.title')">

ui/console-src/modules/contents/posts/PostEditor.vue

@@ -461,10 +461,10 @@ async function handleUploadImage(file: File, options?: AxiosRequestConfig) {
   />
 
   <UrlPreviewModal
-    v-if="isUpdateMode"
-    v-model:visible="previewModal"
+    v-if="previewModal"
     :title="formState.post.spec.title"
     :url="`/preview/posts/${formState.post.metadata.name}`"
+    @close="previewModal = false"
   />
 
   <VPageHeader :title="$t('core.post.title')">

ui/console-src/modules/dashboard/widgets/QuickLinkWidget.vue

@@ -229,9 +229,10 @@ const actions: Action[] = [
     </OverlayScrollbarsComponent>
   </VCard>
   <ThemePreviewModal
-    v-model:visible="themePreviewVisible"
+    v-if="themePreviewVisible"
     :title="
       $t('core.dashboard.widgets.presets.quicklink.actions.view_site.title')
     "
+    @close="themePreviewVisible = false"
   />
 </template>

ui/console-src/modules/interface/themes/components/list-tabs/InstalledThemes.vue

@@ -106,8 +106,9 @@ const handleOpenPreview = (theme: Theme) => {
       </ul>
     </Transition>
     <ThemePreviewModal
-      v-model:visible="previewVisible"
+      v-if="previewVisible"
       :theme="selectedPreviewTheme"
+      @close="previewVisible = false"
     />
   </div>
 </template>

ui/console-src/modules/interface/themes/components/preview/ThemePreviewModal.vue

@@ -2,7 +2,7 @@
 import ThemePreviewListItem from "./ThemePreviewListItem.vue";
 import { useSettingFormConvert } from "@console/composables/use-setting-form";
 import { useThemeStore } from "@console/stores/theme";
-import { apiClient } from "@/utils/api-client";
+import { apiClient, axiosInstance } from "@/utils/api-client";
 import type {
   ConfigMap,
   Setting,
@@ -22,28 +22,27 @@ import {
   IconTablet,
   IconRefreshLine,
   Toast,
+  VLoading,
 } from "@halo-dev/components";
 import { storeToRefs } from "pinia";
-import { computed, markRaw, ref, toRaw, watch } from "vue";
+import { computed, markRaw, ref, toRaw } from "vue";
 import { useI18n } from "vue-i18n";
 import { OverlayScrollbarsComponent } from "overlayscrollbars-vue";
 import { useQuery } from "@tanstack/vue-query";
+import { onMounted } from "vue";
 
 const props = withDefaults(
   defineProps<{
-    visible: boolean;
     title?: string;
     theme?: Theme;
   }>(),
   {
-    visible: false,
     title: undefined,
     theme: undefined,
   }
 );
 
 const emit = defineEmits<{
-  (event: "update:visible", visible: boolean): void;
   (event: "close"): void;
 }>();
 
@@ -56,7 +55,6 @@ interface SettingTab {
 
 const { activatedTheme } = storeToRefs(useThemeStore());
 
-const previewFrame = ref<HTMLIFrameElement | null>(null);
 const themesVisible = ref(false);
 const switching = ref(false);
 const selectedTheme = ref<Theme>();
@@ -71,29 +69,11 @@ const { data: themes } = useQuery<Theme[]>({
     });
     return data.items;
   },
-  enabled: computed(() => props.visible),
 });
 
-watch(
-  () => props.visible,
-  (visible) => {
-    if (visible) {
-      selectedTheme.value = props.theme || activatedTheme?.value;
-    } else {
-      setTimeout(() => {
-        themesVisible.value = false;
-        settingsVisible.value = false;
-      }, 200);
-    }
-  }
-);
-
-const onVisibleChange = (visible: boolean) => {
-  emit("update:visible", visible);
-  if (!visible) {
-    emit("close");
-  }
-};
+onMounted(() => {
+  selectedTheme.value = toRaw(props.theme) || toRaw(activatedTheme?.value);
+});
 
 const handleOpenThemes = () => {
   settingsVisible.value = false;
@@ -122,6 +102,26 @@ const modalTitle = computed(() => {
   });
 });
 
+const {
+  data: previewHTML,
+  isLoading,
+  refetch: refetchPreviewHTML,
+} = useQuery({
+  queryKey: ["site-preview", previewUrl],
+  queryFn: async () => {
+    const { data } = await axiosInstance.get(previewUrl.value, {
+      headers: {
+        Accept: "text/html",
+        "Cache-Control": "no-cache",
+        Pragma: "no-cache",
+        Expires: "0",
+      },
+    });
+    return data;
+  },
+  enabled: computed(() => !!previewUrl.value),
+});
+
 // theme settings
 const saving = ref(false);
 const settingTabs = ref<SettingTab[]>([] as SettingTab[]);
@@ -150,9 +150,7 @@ const { data: setting } = useQuery<Setting>({
 
     activeSettingTab.value = settingTabs.value[0].id;
   },
-  enabled: computed(
-    () => props.visible && !!selectedTheme.value?.spec.settingName
-  ),
+  enabled: computed(() => !!selectedTheme.value?.spec.settingName),
 });
 
 const { data: configMap, refetch: handleFetchConfigMap } = useQuery<ConfigMap>({
@@ -195,7 +193,7 @@ const handleSaveConfigMap = async () => {
 
   saving.value = false;
 
-  handleRefresh();
+  refetchPreviewHTML();
 };
 
 const handleOpenSettings = (theme?: Theme) => {
@@ -206,10 +204,6 @@ const handleOpenSettings = (theme?: Theme) => {
   settingsVisible.value = !settingsVisible.value;
 };
 
-const handleRefresh = () => {
-  previewFrame.value?.contentWindow?.location.reload();
-};
-
 // mock devices
 const mockDevices = [
   {
@@ -241,11 +235,10 @@ const iframeClasses = computed(() => {
 <template>
   <VModal
     :body-class="['!p-0']"
-    :visible="visible"
     fullscreen
     :title="modalTitle"
     :mount-to-body="true"
-    @update:visible="onVisibleChange"
+    @close="emit('close')"
   >
     <template #center>
       <!-- TODO: Reactor VTabbar component to support icon prop -->
@@ -281,7 +274,7 @@ const iframeClasses = computed(() => {
           content: $t('core.common.buttons.refresh'),
           delay: 300,
         }"
-        @click="handleRefresh"
+        @click="refetchPreviewHTML()"
       >
         <IconRefreshLine />
       </span>
@@ -432,12 +425,12 @@ const iframeClasses = computed(() => {
       <div
         class="flex h-full flex-1 items-center justify-center transition-all duration-300"
       >
+        <VLoading v-if="isLoading" />
         <iframe
-          v-if="visible"
-          ref="previewFrame"
+          v-else
           class="border-none transition-all duration-500"
           :class="iframeClasses"
-          :src="previewUrl"
+          :srcdoc="previewHTML"
         ></iframe>
       </div>
     </div>

ui/console-src/modules/interface/themes/layouts/ThemeLayout.vue

@@ -269,6 +269,10 @@ onMounted(() => {
     </div>
 
     <ThemeListModal v-model:visible="themesModal" @select="onSelectTheme" />
-    <ThemePreviewModal v-model:visible="previewModal" :theme="selectedTheme" />
+    <ThemePreviewModal
+      v-if="previewModal"
+      :theme="selectedTheme"
+      @close="previewModal = false"
+    />
   </BasicLayout>
 </template>

ui/src/components/preview/UrlPreviewModal.vue

@@ -1,4 +1,5 @@
 <script lang="ts" setup>
+import { axiosInstance } from "@/utils/api-client";
 import {
   VModal,
   IconLink,
@@ -6,34 +7,29 @@ import {
   IconComputer,
   IconTablet,
   IconPhone,
+  VLoading,
 } from "@halo-dev/components";
+import { useQuery } from "@tanstack/vue-query";
+import { toRefs } from "vue";
 import { computed, markRaw, ref } from "vue";
 
-withDefaults(
+const props = withDefaults(
   defineProps<{
-    visible: boolean;
     title?: string;
     url?: string;
   }>(),
   {
-    visible: false,
     title: undefined,
     url: "",
   }
 );
 
+const { url } = toRefs(props);
+
 const emit = defineEmits<{
-  (event: "update:visible", visible: boolean): void;
   (event: "close"): void;
 }>();
 
-const onVisibleChange = (visible: boolean) => {
-  emit("update:visible", visible);
-  if (!visible) {
-    emit("close");
-  }
-};
-
 const mockDevices = [
   {
     id: "desktop",
@@ -59,15 +55,30 @@ const iframeClasses = computed(() => {
   }
   return "w-96 h-[50rem] ring-2 rounded ring-gray-300";
 });
+
+const { data: html, isLoading } = useQuery({
+  queryKey: ["url-preview", url],
+  queryFn: async () => {
+    const { data } = await axiosInstance.get(url.value, {
+      headers: {
+        Accept: "text/html",
+        "Cache-Control": "no-cache",
+        Pragma: "no-cache",
+        Expires: "0",
+      },
+    });
+    return data;
+  },
+  enabled: computed(() => !!url.value),
+});
 </script>
 <template>
   <VModal
     :body-class="['!p-0']"
-    :visible="visible"
     fullscreen
     :title="title"
     :layer-closable="true"
-    @update:visible="onVisibleChange"
+    @close="emit('close')"
   >
     <template #center>
       <!-- TODO: Reactor VTabbar component to support icon prop -->
@@ -86,11 +97,12 @@ const iframeClasses = computed(() => {
       </span>
     </template>
     <div class="flex h-full items-center justify-center">
+      <VLoading v-if="isLoading" />
       <iframe
-        v-if="visible"
+        v-else
         class="border-none transition-all duration-500"
         :class="iframeClasses"
-        :src="url"
+        :srcdoc="html"
       ></iframe>
     </div>
   </VModal>

ui/src/utils/api-client.ts

@@ -273,4 +273,4 @@ function setupApiClient(axios: AxiosInstance) {
   };
 }
 
-export { apiClient };
+export { apiClient, axiosInstance };