fix(update-center): cascade local and remote icon fallbacks

Keep update list icons from dropping straight to placeholders by retrying the remote store icon after local load failures. Align the update-center IPC and renderer types with the split local/remote icon contract.

electron/main/backend/update-center/icons.ts

@@ -181,21 +181,31 @@ export const buildRemoteFallbackIconUrl = ({
   return `${baseUrl}/${storeArch}/${category}/${pkgname}/icon.png`;
 };
 
-export const resolveUpdateItemIcon = (item: UpdateCenterItem): string => {
+export const resolveUpdateItemIcons = (
+  item: UpdateCenterItem,
+): Pick<UpdateCenterItem, "localIcon" | "remoteIcon"> => {
   const localIcon =
     item.source === "aptss"
       ? resolveDesktopIcon(item.pkgname)
       : resolveApmIcon(item.pkgname);
-  if (localIcon) {
+  const remoteIcon = buildRemoteFallbackIconUrl({
-    return localIcon;
-  }
-
-  return (
-    buildRemoteFallbackIconUrl({
     pkgname: item.pkgname,
     source: item.source,
     arch: item.arch,
     category: item.category,
-    }) || ""
+  });
-  );
+
+  if (localIcon && remoteIcon) {
+    return { localIcon, remoteIcon };
+  }
+
+  if (localIcon) {
+    return { localIcon };
+  }
+
+  if (remoteIcon) {
+    return { remoteIcon };
+  }
+
+  return {};
 };

electron/main/backend/update-center/index.ts

@@ -9,7 +9,7 @@ import {
   parseAptssUpgradableOutput,
   parsePrintUrisOutput,
 } from "./query";
-import { resolveUpdateItemIcon } from "./icons";
+import { resolveUpdateItemIcons } from "./icons";
 import {
   createUpdateCenterService,
   type UpdateCenterIgnorePayload,
@@ -249,9 +249,9 @@ const enrichItemCategories = async (
 
 const enrichItemIcons = (items: UpdateCenterItem[]): UpdateCenterItem[] => {
   return items.map((item) => {
-    const icon = resolveUpdateItemIcon(item);
+    const icons = resolveUpdateItemIcons(item);
 
-    return icon ? { ...item, icon } : item;
+    return Object.keys(icons).length > 0 ? { ...item, ...icons } : item;
   });
 };
 

electron/main/backend/update-center/service.ts

@@ -25,7 +25,8 @@ export interface UpdateCenterServiceItem {
   currentVersion: string;
   newVersion: string;
   source: UpdateSource;
-  icon?: string;
+  localIcon?: string;
+  remoteIcon?: string;
   ignored?: boolean;
   downloadUrl?: string;
   fileName?: string;
@@ -41,7 +42,8 @@ export interface UpdateCenterServiceTask {
   taskKey: string;
   packageName: string;
   source: UpdateSource;
-  icon?: string;
+  localIcon?: string;
+  remoteIcon?: string;
   status: UpdateCenterQueueSnapshot["tasks"][number]["status"];
   progress: number;
   logs: UpdateCenterQueueSnapshot["tasks"][number]["logs"];
@@ -98,7 +100,8 @@ const toState = (
     currentVersion: item.currentVersion,
     newVersion: item.nextVersion,
     source: item.source,
-    icon: item.icon,
+    localIcon: item.localIcon,
+    remoteIcon: item.remoteIcon,
     ignored: item.ignored,
     downloadUrl: item.downloadUrl,
     fileName: item.fileName,
@@ -113,7 +116,8 @@ const toState = (
     taskKey: getTaskKey(task.item),
     packageName: task.pkgname,
     source: task.item.source,
-    icon: task.item.icon,
+    localIcon: task.item.localIcon,
+    remoteIcon: task.item.remoteIcon,
     status: task.status,
     progress: task.progress,
     logs: task.logs.map((log) => ({ ...log })),

electron/main/backend/update-center/types.ts

@@ -12,7 +12,8 @@ export interface UpdateCenterItem {
   nextVersion: string;
   arch?: string;
   category?: string;
-  icon?: string;
+  localIcon?: string;
+  remoteIcon?: string;
   ignored?: boolean;
   downloadUrl?: string;
   fileName?: string;

electron/preload/index.ts

@@ -8,12 +8,16 @@ type UpdateCenterSnapshot = {
     currentVersion: string;
     newVersion: string;
     source: "aptss" | "apm";
+    localIcon?: string;
+    remoteIcon?: string;
     ignored?: boolean;
   }>;
   tasks: Array<{
     taskKey: string;
     packageName: string;
     source: "aptss" | "apm";
+    localIcon?: string;
+    remoteIcon?: string;
     status:
       | "queued"
       | "downloading"

src/__tests__/unit/update-center/UpdateCenterItem.test.ts

@@ -1,5 +1,6 @@
 import { fireEvent, render, screen } from "@testing-library/vue";
 import { describe, expect, it } from "vitest";
+import { defineComponent, nextTick, reactive, ref } from "vue";
 
 import UpdateCenterItem from "@/components/update-center/UpdateCenterItem.vue";
 import type {
@@ -33,10 +34,13 @@ const createTask = (
 });
 
 describe("UpdateCenterItem", () => {
-  it("renders an icon image when item.icon exists", () => {
+  it("renders localIcon first when both icon sources exist", () => {
     render(UpdateCenterItem, {
       props: {
-        item: createItem({ icon: "/usr/share/pixmaps/spark-weather.png" }),
+        item: createItem({
+          localIcon: "/usr/share/pixmaps/spark-weather.png",
+          remoteIcon: "https://example.com/spark-weather.png",
+        }),
         task: createTask(),
         selected: false,
       },
@@ -50,10 +54,13 @@ describe("UpdateCenterItem", () => {
     );
   });
 
-  it("falls back to a placeholder icon when the image fails", async () => {
+  it("falls back to remoteIcon when localIcon fails", async () => {
     render(UpdateCenterItem, {
       props: {
-        item: createItem({ icon: "https://example.com/spark-weather.png" }),
+        item: createItem({
+          localIcon: "/usr/share/pixmaps/spark-weather.png",
+          remoteIcon: "https://example.com/spark-weather.png",
+        }),
         task: createTask(),
         selected: false,
       },
@@ -63,16 +70,42 @@ describe("UpdateCenterItem", () => {
 
     await fireEvent.error(icon);
 
+    expect(icon).toHaveAttribute(
+      "src",
+      "https://example.com/spark-weather.png",
+    );
+  });
+
+  it("falls back to the placeholder after localIcon and remoteIcon both fail", async () => {
+    render(UpdateCenterItem, {
+      props: {
+        item: createItem({
+          localIcon: "/usr/share/pixmaps/spark-weather.png",
+          remoteIcon: "https://example.com/spark-weather.png",
+        }),
+        task: createTask(),
+        selected: false,
+      },
+    });
+
+    const icon = screen.getByRole("img", { name: "Spark Weather 图标" });
+
+    await fireEvent.error(icon);
+    await fireEvent.error(icon);
+
     expect(icon.getAttribute("src")).toContain("data:image/svg+xml");
     expect(icon.getAttribute("src")).not.toContain(
       "https://example.com/spark-weather.png",
     );
   });
 
-  it("shows a new item icon again after a previous icon failure", async () => {
+  it("restarts from localIcon when a new item is rendered", async () => {
     const { rerender } = render(UpdateCenterItem, {
       props: {
-        item: createItem({ icon: "https://example.com/spark-weather.png" }),
+        item: createItem({
+          localIcon: "/usr/share/pixmaps/spark-weather.png",
+          remoteIcon: "https://example.com/spark-weather.png",
+        }),
         task: createTask(),
         selected: false,
       },
@@ -82,12 +115,16 @@ describe("UpdateCenterItem", () => {
 
     await fireEvent.error(firstIcon);
 
-    expect(firstIcon.getAttribute("src")).toContain("data:image/svg+xml");
+    expect(firstIcon).toHaveAttribute(
+      "src",
+      "https://example.com/spark-weather.png",
+    );
 
     await rerender({
       item: createItem({
         displayName: "Spark Clock",
-        icon: "/usr/share/pixmaps/spark-clock.png",
+        localIcon: "/usr/share/pixmaps/spark-clock.png",
+        remoteIcon: "https://example.com/spark-clock.png",
       }),
       task: createTask(),
       selected: false,
@@ -101,11 +138,16 @@ describe("UpdateCenterItem", () => {
     );
   });
 
-  it("retries the same icon string when a fresh item object is rendered", async () => {
+  it("restarts from localIcon when icon sources change on the same item object", async () => {
-    const brokenIcon = "https://example.com/spark-weather.png";
+    const item = reactive(
-    const { rerender } = render(UpdateCenterItem, {
+      createItem({
+        localIcon: "/usr/share/pixmaps/spark-weather.png",
+        remoteIcon: "https://example.com/spark-weather.png",
+      }),
+    );
+    render(UpdateCenterItem, {
       props: {
-        item: createItem({ icon: brokenIcon }),
+        item,
         task: createTask(),
         selected: false,
       },
@@ -113,22 +155,63 @@ describe("UpdateCenterItem", () => {
 
     const firstIcon = screen.getByRole("img", { name: "Spark Weather 图标" });
 
+    await fireEvent.error(firstIcon);
     await fireEvent.error(firstIcon);
 
     expect(firstIcon.getAttribute("src")).toContain("data:image/svg+xml");
 
-    await rerender({
+    item.localIcon = "/usr/share/pixmaps/spark-weather-refreshed.png";
-      item: createItem({
+    item.remoteIcon = "https://example.com/spark-weather-refreshed.png";
-        currentVersion: "1.1.0",
+
-        newVersion: "2.1.0",
+    await nextTick();
-        icon: brokenIcon,
-      }),
-      task: createTask({ progress: 75 }),
-      selected: false,
-    });
 
     const retriedIcon = screen.getByRole("img", { name: "Spark Weather 图标" });
 
-    expect(retriedIcon).toHaveAttribute("src", brokenIcon);
+    expect(retriedIcon).toHaveAttribute(
+      "src",
+      "file:///usr/share/pixmaps/spark-weather-refreshed.png",
+    );
+  });
+
+  it("restarts from localIcon for a fresh item object with the same icon sources", async () => {
+    const item = ref(
+      createItem({
+        localIcon: "/usr/share/pixmaps/spark-weather.png",
+        remoteIcon: "https://example.com/spark-weather.png",
+      }),
+    );
+    const Wrapper = defineComponent({
+      components: { UpdateCenterItem },
+      setup() {
+        return {
+          item,
+          task: createTask(),
+        };
+      },
+      template:
+        '<UpdateCenterItem :item="item" :task="task" :selected="false" />',
+    });
+
+    render(Wrapper);
+
+    const firstIcon = screen.getByRole("img", { name: "Spark Weather 图标" });
+
+    await fireEvent.error(firstIcon);
+    await fireEvent.error(firstIcon);
+
+    expect(firstIcon.getAttribute("src")).toContain("data:image/svg+xml");
+
+    item.value = createItem({
+      localIcon: "/usr/share/pixmaps/spark-weather.png",
+      remoteIcon: "https://example.com/spark-weather.png",
+    });
+    await nextTick();
+
+    const retriedIcon = screen.getByRole("img", { name: "Spark Weather 图标" });
+
+    expect(retriedIcon).toHaveAttribute(
+      "src",
+      "file:///usr/share/pixmaps/spark-weather.png",
+    );
   });
 });

src/__tests__/unit/update-center/icons.test.ts

@@ -87,12 +87,12 @@ afterEach(() => {
 });
 
 describe("update-center icons", () => {
-  it("prefers local desktop icon paths for aptss items", async () => {
+  it("returns both localIcon and remoteIcon when an aptss desktop icon resolves", async () => {
     const pkgname = "spark-weather";
     const applicationsDirectory = "/usr/share/applications";
     const desktopPath = `${applicationsDirectory}/weather-launcher.desktop`;
     const iconPath = `/usr/share/pixmaps/${pkgname}.png`;
-    const { resolveUpdateItemIcon } = await loadIconsModule({
+    const { resolveUpdateItemIcons } = await loadIconsModule({
       directories: {
         [applicationsDirectory]: ["weather-launcher.desktop"],
       },
@@ -106,13 +106,19 @@ describe("update-center icons", () => {
     });
 
     expect(
-      resolveUpdateItemIcon({
+      resolveUpdateItemIcons({
         pkgname,
         source: "aptss",
         currentVersion: "1.0.0",
         nextVersion: "2.0.0",
+        category: "tools",
+        arch: "amd64",
       }),
-    ).toBe(iconPath);
+    ).toEqual({
+      localIcon: iconPath,
+      remoteIcon:
+        "https://erotica.spark-app.store/amd64-store/tools/spark-weather/icon.png",
+    });
   });
 
   it("resolves APM icon names from entries/icons when desktop icon is not absolute", async () => {
@@ -120,7 +126,7 @@ describe("update-center icons", () => {
     const desktopDirectory = `/var/lib/apm/apm/files/ace-env/var/lib/apm/${pkgname}/entries/applications`;
     const desktopPath = `${desktopDirectory}/${pkgname}.desktop`;
     const iconPath = `/var/lib/apm/apm/files/ace-env/var/lib/apm/${pkgname}/entries/icons/hicolor/48x48/apps/${pkgname}.png`;
-    const { resolveUpdateItemIcon } = await loadIconsModule({
+    const { resolveUpdateItemIcons } = await loadIconsModule({
       directories: {
         [desktopDirectory]: [`${pkgname}.desktop`],
       },
@@ -131,13 +137,13 @@ describe("update-center icons", () => {
     });
 
     expect(
-      resolveUpdateItemIcon({
+      resolveUpdateItemIcons({
         pkgname,
         source: "apm",
         currentVersion: "1.0.0",
         nextVersion: "2.0.0",
       }),
-    ).toBe(iconPath);
+    ).toEqual({ localIcon: iconPath });
   });
 
   it("checks later APM desktop entries when the first one has no usable icon", async () => {
@@ -197,11 +203,11 @@ describe("update-center icons", () => {
     expect(resolveApmIcon(pkgname)).toBe(sharedIconPath);
   });
 
-  it("builds a remote fallback URL when category and arch are available", async () => {
+  it("returns only remoteIcon when no local icon resolves", async () => {
-    const { resolveUpdateItemIcon } = await loadIconsModule({});
+    const { resolveUpdateItemIcons } = await loadIconsModule({});
 
     expect(
-      resolveUpdateItemIcon({
+      resolveUpdateItemIcons({
         pkgname: "spark-clock",
         source: "apm",
         currentVersion: "1.0.0",
@@ -209,22 +215,51 @@ describe("update-center icons", () => {
         category: "utility",
         arch: "amd64",
       }),
-    ).toBe(
+    ).toEqual({
+      remoteIcon:
         "https://erotica.spark-app.store/amd64-apm/utility/spark-clock/icon.png",
-    );
+    });
   });
 
-  it("returns empty string when neither local nor remote icon can be determined", async () => {
+  it("returns only localIcon when a remote fallback URL cannot be built", async () => {
-    const { resolveUpdateItemIcon } = await loadIconsModule({});
+    const pkgname = "spark-reader";
+    const applicationsDirectory = "/usr/share/applications";
+    const desktopPath = `${applicationsDirectory}/reader-launcher.desktop`;
+    const iconPath = `/usr/share/pixmaps/${pkgname}.png`;
+    const { resolveUpdateItemIcons } = await loadIconsModule({
+      directories: {
+        [applicationsDirectory]: ["reader-launcher.desktop"],
+      },
+      files: {
+        [desktopPath]: `[Desktop Entry]\nName=Spark Reader\nIcon=${iconPath}\n`,
+        [iconPath]: "png",
+      },
+      packageFiles: {
+        [pkgname]: [desktopPath],
+      },
+    });
 
     expect(
-      resolveUpdateItemIcon({
+      resolveUpdateItemIcons({
+        pkgname,
+        source: "aptss",
+        currentVersion: "1.0.0",
+        nextVersion: "2.0.0",
+      }),
+    ).toEqual({ localIcon: iconPath });
+  });
+
+  it("returns an empty object when neither local nor remote icons are available", async () => {
+    const { resolveUpdateItemIcons } = await loadIconsModule({});
+
+    expect(
+      resolveUpdateItemIcons({
         pkgname: "spark-empty",
         source: "aptss",
         currentVersion: "1.0.0",
         nextVersion: "2.0.0",
       }),
-    ).toBe("");
+    ).toEqual({});
   });
 
   it("ignores unrelated desktop files while still resolving owned non-exact filenames", async () => {

src/__tests__/unit/update-center/load-items.test.ts

@@ -175,7 +175,8 @@ describe("update-center load items", () => {
       nextVersion: "3.0.0",
       arch: "amd64",
       category: "tools",
-      icon: "https://erotica.spark-app.store/amd64-apm/tools/spark-weather/icon.png",
+      remoteIcon:
+        "https://erotica.spark-app.store/amd64-apm/tools/spark-weather/icon.png",
       downloadUrl: "https://example.invalid/spark-weather_3.0.0_amd64.deb",
       fileName: "spark-weather_3.0.0_amd64.deb",
       size: 123456,
@@ -235,7 +236,8 @@ describe("update-center load items", () => {
         nextVersion: "2.0.0",
         arch: "amd64",
         category: "office",
-        icon: "https://erotica.spark-app.store/amd64-store/office/spark-notes/icon.png",
+        remoteIcon:
+          "https://erotica.spark-app.store/amd64-store/office/spark-notes/icon.png",
       },
     ]);
     expect(result.warnings).toEqual([
@@ -308,7 +310,8 @@ describe("update-center load items", () => {
         nextVersion: "2.0.0",
         arch: "amd64",
         category: "office",
-        icon: "https://erotica.spark-app.store/amd64-store/office/spark-notes/icon.png",
+        remoteIcon:
+          "https://erotica.spark-app.store/amd64-store/office/spark-notes/icon.png",
       },
     ]);
   });
@@ -362,7 +365,8 @@ describe("update-center load items", () => {
         nextVersion: "2.0.0",
         arch: "amd64",
         category: "office",
-        icon: "https://erotica.spark-app.store/amd64-store/office/spark-notes/icon.png",
+        remoteIcon:
+          "https://erotica.spark-app.store/amd64-store/office/spark-notes/icon.png",
       },
     ]);
     expect(result.warnings).toEqual([

src/__tests__/unit/update-center/registerUpdateCenter.test.ts

@@ -217,9 +217,16 @@ describe("update-center/ipc", () => {
     expect(snapshots.at(-1)?.items[0]).not.toHaveProperty("nextVersion");
   });
 
-  it("service task snapshots keep item icons for queued work", async () => {
+  it("service task snapshots keep localIcon and remoteIcon for queued work", async () => {
+    let releaseTask: (() => void) | undefined;
     const service = createUpdateCenterService({
-      loadItems: async () => [{ ...createItem(), icon: "/icons/weather.png" }],
+      loadItems: async () => [
+        {
+          ...createItem(),
+          localIcon: "/icons/weather.png",
+          remoteIcon: "https://example.com/weather.png",
+        },
+      ],
       createTaskRunner: (queue: UpdateCenterQueue) => ({
         cancelActiveTask: vi.fn(),
         runNextTask: async () => {
@@ -228,6 +235,9 @@ describe("update-center/ipc", () => {
             return null;
           }
 
+          await new Promise<void>((resolve) => {
+            releaseTask = resolve;
+          });
           queue.markActiveTask(task.id, "installing");
           queue.finishTask(task.id, "completed");
           return task;
@@ -236,15 +246,20 @@ describe("update-center/ipc", () => {
     });
 
     await service.refresh();
-    await service.start(["aptss:spark-weather"]);
+    const startPromise = service.start(["aptss:spark-weather"]);
+    await flushPromises();
 
     expect(service.getState().tasks).toMatchObject([
       {
         taskKey: "aptss:spark-weather",
-        icon: "/icons/weather.png",
+        localIcon: "/icons/weather.png",
-        status: "completed",
+        remoteIcon: "https://example.com/weather.png",
+        status: "queued",
       },
     ]);
+
+    releaseTask?.();
+    await startPromise;
   });
 
   it("concurrent start calls still serialize through one processing pipeline", async () => {

src/components/update-center/UpdateCenterItem.vue

@@ -92,17 +92,13 @@ const props = defineProps<{
 
 const PLACEHOLDER_ICON =
   'data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 48 48"%3E%3Crect width="48" height="48" rx="12" fill="%23e2e8f0"/%3E%3Cpath d="M17 31h14v2H17zm3-12h8a2 2 0 0 1 2 2v8H18v-8a2 2 0 0 1 2-2" fill="%2394a3b8"/%3E%3C/svg%3E';
-const failedIcon = ref<string | null>(null);
+const iconIndex = ref(0);
 
 defineEmits<{
   (e: "toggle-selection"): void;
 }>();
 
-const normalizeIconSrc = (icon?: string): string => {
+const normalizeIconSrc = (icon: string): string => {
-  if (!icon || failedIcon.value === icon) {
-    return PLACEHOLDER_ICON;
-  }
-
   if (/^[a-z]+:\/\//i.test(icon)) {
     return icon;
   }
@@ -110,18 +106,30 @@ const normalizeIconSrc = (icon?: string): string => {
   return icon.startsWith("/") ? `file://${icon}` : icon;
 };
 
+const iconCandidates = computed(() => {
+  return [props.item.localIcon, props.item.remoteIcon].filter(
+    (icon): icon is string => Boolean(icon),
+  );
+});
+
 const handleIconError = () => {
-  failedIcon.value = props.item.icon ?? null;
+  if (iconIndex.value < iconCandidates.value.length) {
+    iconIndex.value += 1;
+  }
 };
 
 watch(
-  () => props.item,
+  [() => props.item, () => props.item.localIcon, () => props.item.remoteIcon],
   () => {
-    failedIcon.value = null;
+    iconIndex.value = 0;
   },
 );
 
-const iconSrc = computed(() => normalizeIconSrc(props.item.icon));
+const iconSrc = computed(() => {
+  const icon = iconCandidates.value[iconIndex.value];
+
+  return icon ? normalizeIconSrc(icon) : PLACEHOLDER_ICON;
+});
 
 const sourceLabel = computed(() => {
   return props.item.source === "apm" ? "APM" : "传统deb";

src/global/typedefinition.ts

@@ -140,7 +140,8 @@ export interface UpdateCenterItem {
   currentVersion: string;
   newVersion: string;
   source: UpdateSource;
-  icon?: string;
+  localIcon?: string;
+  remoteIcon?: string;
   ignored?: boolean;
   downloadUrl?: string;
   fileName?: string;
@@ -156,7 +157,8 @@ export interface UpdateCenterTaskState {
   taskKey: string;
   packageName: string;
   source: UpdateSource;
-  icon?: string;
+  localIcon?: string;
+  remoteIcon?: string;
   status: UpdateCenterTaskStatus;
   progress: number;
   logs: Array<{ time: number; message: string }>;