feat(nacos): show conflict config diff in copy preview

apps/desktop/src/components/nacos/NacosConfigBatchDialog.vue

@@ -1,11 +1,12 @@
 <script setup lang="ts">
 import { computed, ref, watch } from "vue";
-import { AlertTriangle, Archive, CheckCircle2, FileUp, Loader2 } from "@lucide/vue";
+import { AlertTriangle, Archive, CheckCircle2, FileUp, GitCompareArrows, Loader2 } from "@lucide/vue";
 import { useI18n } from "vue-i18n";
+import NacosConfigDiffDialog from "@/components/nacos/NacosConfigDiffDialog.vue";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from "@/components/ui/dialog";
-import type { NacosBatchPreview, NacosBatchReport, NacosConfigDataIdMapping, NacosConfigKey, NacosConfigSelectionScope, NacosConflictPolicy, NacosNamespaceInfo } from "@/types/nacos";
+import type { NacosBatchPreview, NacosBatchPreviewDiff, NacosBatchReport, NacosConfigDataIdMapping, NacosConfigKey, NacosConfigSelectionScope, NacosConflictPolicy, NacosNamespaceInfo } from "@/types/nacos";
 import { nacosNamespaceIdentity } from "@/lib/nacos/nacosNamespaceVisibility";
 
 export type NacosBatchDialogMode = "export" | "import" | "copy";
@@ -58,6 +59,8 @@ const policy = ref<NacosConflictPolicy>("ABORT");
 const targetNamespace = ref("");
 const targetGroup = ref("");
 const targetDataIdDrafts = ref<NacosConfigDataIdMapping[]>([]);
+const previewDiffOpen = ref(false);
+const selectedPreviewDiff = ref<NacosBatchPreviewDiff | null>(null);
 
 const titleKey = computed(() => `nacos.batch${props.mode[0].toUpperCase()}${props.mode.slice(1)}Title`);
 const descriptionKey = computed(() => `nacos.batch${props.mode[0].toUpperCase()}${props.mode.slice(1)}Description`);
@@ -117,6 +120,11 @@ function batchStatusClass(status: string) {
   return "text-muted-foreground";
 }
 
+function showPreviewDiff(diff: NacosBatchPreviewDiff) {
+  selectedPreviewDiff.value = diff;
+  previewDiffOpen.value = true;
+}
+
 function resetTargetNamespace() {
   if (targetNamespaces.value.some((item) => JSON.stringify(item.namespace) === targetNamespace.value)) return;
   targetNamespace.value = targetNamespaces.value[0] ? JSON.stringify(targetNamespaces.value[0].namespace) : "";
@@ -171,6 +179,14 @@ watch(
 watch(targetNamespaces, () => {
   if (props.open) resetTargetNamespace();
 });
+
+watch(
+  () => props.preview,
+  () => {
+    previewDiffOpen.value = false;
+    selectedPreviewDiff.value = null;
+  },
+);
 </script>
 
 <template>
@@ -302,7 +318,12 @@ watch(targetNamespaces, () => {
                 <div class="truncate text-muted-foreground">{{ item.group }} · {{ item.namespace || "public" }}</div>
                 <div v-if="item.message" class="break-all text-destructive">{{ item.message }}</div>
               </div>
-              <Badge variant="outline" :class="batchStatusClass(item.status)">{{ batchStatusLabel(item.status) }}</Badge>
+              <div class="flex shrink-0 items-center gap-1">
+                <Button v-if="item.diff" size="icon" variant="ghost" class="h-7 w-7" :title="t('nacos.configDiffTitle')" :aria-label="t('nacos.configDiffTitle')" @click="showPreviewDiff(item.diff)">
+                  <GitCompareArrows class="h-4 w-4" />
+                </Button>
+                <Badge variant="outline" :class="batchStatusClass(item.status)">{{ batchStatusLabel(item.status) }}</Badge>
+              </div>
             </div>
           </div>
         </div>
@@ -358,4 +379,6 @@ watch(targetNamespaces, () => {
       </DialogFooter>
     </DialogContent>
   </Dialog>
+
+  <NacosConfigDiffDialog v-model:open="previewDiffOpen" :before="selectedPreviewDiff?.beforeContent ?? ''" :after="selectedPreviewDiff?.afterContent ?? ''" :format="selectedPreviewDiff?.format" :show-confirm="false" />
 </template>

apps/desktop/src/components/nacos/__tests__/NacosConfigBatchDialog.spec.ts

@@ -4,7 +4,20 @@ import { createApp, defineComponent, h, nextTick, type App } from "vue";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import i18n from "@/i18n";
 import NacosConfigBatchDialog from "@/components/nacos/NacosConfigBatchDialog.vue";
-import type { NacosBatchReport, NacosConfigKey } from "@/types/nacos";
+import type { NacosBatchPreview, NacosBatchReport, NacosConfigKey } from "@/types/nacos";
+
+vi.mock("@/components/nacos/NacosConfigDiffDialog.vue", () => ({
+  default: defineComponent({
+    props: {
+      open: Boolean,
+      before: String,
+      after: String,
+      format: String,
+      showConfirm: Boolean,
+    },
+    template: '<div v-if="open" data-testid="nacos-preview-diff" :data-before="before" :data-after="after" :data-format="format" :data-show-confirm="showConfirm" />',
+  }),
+}));
 
 const mountedApps: App[] = [];
 
@@ -16,6 +29,7 @@ async function mountDialog(
   ],
   report: NacosBatchReport | null = null,
   selectedKeys: NacosConfigKey[] = [{ namespace: "shared", group: "DEFAULT_GROUP", dataId: "app.yaml" }],
+  preview: NacosBatchPreview | null = null,
 ) {
   const onTargetConnectionChange = vi.fn();
   const onPreview = vi.fn();
@@ -39,7 +53,7 @@ async function mountDialog(
           sourceConnectionId: "source",
           currentNamespace: "shared",
           namespaces,
-          preview: null,
+          preview,
           report,
           onTargetConnectionChange,
           onPreview,
@@ -232,4 +246,32 @@ describe("NacosConfigBatchDialog cross-connection sync", () => {
     expect(document.body.textContent).toContain("Failed");
     expect(document.body.textContent).toContain("target unavailable");
   });
+
+  it("opens a read-only diff for a conflicting copy preview", async () => {
+    await mountDialog("remote", undefined, null, undefined, {
+      planHash: "preview-hash",
+      total: 1,
+      created: 0,
+      conflicts: 1,
+      invalid: 0,
+      items: [
+        {
+          namespace: "shared",
+          group: "DEFAULT_GROUP",
+          dataId: "app.yaml",
+          status: "conflict",
+          diff: { beforeContent: "port: 8080", afterContent: "port: 9090", format: "yaml" },
+        },
+      ],
+    });
+
+    (document.body.querySelector('[aria-label="Config Content Compare"]') as HTMLButtonElement).click();
+    await nextTick();
+
+    const diff = document.body.querySelector("[data-testid=nacos-preview-diff]") as HTMLElement;
+    expect(diff.dataset.before).toBe("port: 8080");
+    expect(diff.dataset.after).toBe("port: 9090");
+    expect(diff.dataset.format).toBe("yaml");
+    expect(diff.dataset.showConfirm).toBe("false");
+  });
 });

apps/desktop/src/types/nacos.ts

@@ -358,12 +358,19 @@ export interface NacosConfigSelector {
 
 export type NacosConflictPolicy = "ABORT" | "SKIP" | "OVERWRITE";
 
+export interface NacosBatchPreviewDiff {
+  beforeContent: string;
+  afterContent: string;
+  format?: string;
+}
+
 export interface NacosBatchPreviewItem {
   namespace: string;
   group: string;
   dataId: string;
   status: string;
   message?: string;
+  diff?: NacosBatchPreviewDiff;
 }
 
 export interface NacosBatchPreview {