fix(panel): 建服对话框每次打开重读镜像白名单，编辑或重开时清掉旧错误，读不到白名单时说明并可重试

panel/src/components/CreateServerDialog.test.tsx

@@ -189,3 +189,72 @@ describe("CreateServerDialog names", () => {
     expect(subdomainBox().getAttribute("aria-invalid")).toBe("false");
   });
 });
+
+describe("CreateServerDialog on reopening", () => {
+  const cancel = () => screen.getByRole("button", { name: "Cancel" });
+  const reopen = async (user: ReturnType<typeof userEvent.setup>) => {
+    await user.click(screen.getByRole("button", { name: "New server" }));
+    await screen.findByRole("dialog");
+  };
+
+  it("rereads the image whitelist each time it opens", async () => {
+    const NEW = "registry.example.test/fabric:1.21";
+    const user = await openDialog();
+    await user.click(cancel());
+    expect(calls.listImages).toHaveBeenCalledTimes(1);
+
+    calls.listImages.mockResolvedValue([image(PAPER, true), image(NEW, true)]);
+    await reopen(user);
+    expect(calls.listImages).toHaveBeenCalledTimes(2);
+    await user.click(screen.getByRole("combobox", { name: "Image" }));
+    const options = await screen.findAllByRole("option");
+    expect(options.map((o) => o.textContent)).toEqual([PAPER, NEW]);
+  });
+
+  it("drops a chosen image that was disabled while the dialog was closed", async () => {
+    const user = await openDialog();
+    await fillValid(user);
+    expect(create().disabled).toBe(false);
+    await user.click(cancel());
+
+    calls.listImages.mockResolvedValue([image(PAPER, false)]);
+    await reopen(user);
+    expect(await screen.findByText("No whitelisted images")).toBeTruthy();
+    expect(nameBox().value).toBe("survival");
+    expect(create().disabled).toBe(true);
+  });
+
+  it("clears a refusal once the form is edited, and when the dialog opens again", async () => {
+    const refusal = { status: 409, code: "conflict", message: "server survival already exists" };
+    calls.createServer.mockRejectedValue(refusal);
+    const user = await openDialog();
+    await fillValid(user);
+
+    await user.click(create());
+    expect(screen.getByText(humanizeError(refusal))).toBeTruthy();
+    await user.type(nameBox(), "-2");
+    expect(screen.queryByText(humanizeError(refusal))).toBeNull();
+
+    await user.click(create());
+    expect(screen.getByText(humanizeError(refusal))).toBeTruthy();
+    await user.click(cancel());
+    await reopen(user);
+    expect(screen.queryByText(humanizeError(refusal))).toBeNull();
+  });
+
+  it("says when the whitelist could not be read, and reads it again on request", async () => {
+    const outage = { status: 503, code: "unavailable", message: "images unavailable" };
+    calls.listImages.mockRejectedValueOnce(outage);
+    const user = await openDialog();
+
+    const alert = await screen.findByRole("alert");
+    expect(alert.textContent).toContain(humanizeError(outage));
+    expect(screen.getByText("Image list not loaded")).toBeTruthy();
+    expect(screen.queryByText("No whitelisted images")).toBeNull();
+
+    await user.click(within(alert).getByRole("button", { name: "Try again" }));
+    expect(calls.listImages).toHaveBeenCalledTimes(2);
+    await pick(user, "Image", PAPER);
+    expect(screen.queryByRole("alert")).toBeNull();
+  });
+});

panel/src/components/CreateServerDialog.tsx

@@ -52,7 +52,9 @@ interface Props {
 export function CreateServerDialog({ cfg, onCreated }: Props) {
   const { t } = useTranslation("servers");
   const [open, setOpen] = useState(false);
-  const images = useAsync(() => api.listImages(), []);
+  // The whitelist is read each time the dialog opens, so an image added, enabled
+  // or retired since the page loaded shows up or drops out without a reload.
+  const images = useAsync(() => (open ? api.listImages() : Promise.resolve(null)), [open]);
 
   const [form, setForm] = useState<CreateServerRequest>({
     name: "",
@@ -66,17 +68,27 @@ export function CreateServerDialog({ cfg, onCreated }: Props) {
   const [error, setError] = useState<string | null>(null);
   const [submitting, setSubmitting] = useState(false);
 
+  // A refusal answers the form as it was sent; any edit, or opening the dialog
+  // again, starts past it.
   function set<K extends keyof CreateServerRequest>(k: K, v: CreateServerRequest[K]) {
     setForm((f) => ({ ...f, [k]: v }));
+    setError(null);
+  }
+
+  function openChange(next: boolean) {
+    setOpen(next);
+    if (next) setError(null);
   }
 
   const enabledImages = (images.data ?? []).filter((i) => i.enabled);
+  // An image chosen before it was disabled or removed no longer counts as chosen.
+  const image = enabledImages.some((i) => i.image_ref === form.image) ? form.image : "";
   const nameIssue = serverNameIssue(form.name);
   const subdomainIssue = serverNameIssue(form.subdomain);
   const canSubmit =
     nameIssue === null &&
     subdomainIssue === null &&
-    !!form.image &&
+    !!image &&
     !!form.memory &&
     !!form.storage &&
     !submitting;
@@ -109,7 +121,7 @@ export function CreateServerDialog({ cfg, onCreated }: Props) {
     value && issue ? "text-xs text-destructive" : "text-xs text-muted-foreground";
 
   return (
-    <Dialog open={open} onOpenChange={setOpen}>
+    <Dialog open={open} onOpenChange={openChange}>
       <DialogTrigger asChild>
         <Button size="sm" className="gap-1.5">
           <Plus className="h-4 w-4" />
@@ -172,12 +184,14 @@ export function CreateServerDialog({ cfg, onCreated }: Props) {
 
           <div className="grid gap-2">
             <Label htmlFor="create-server-image">{t("create_server_image")}</Label>
-            <Select value={form.image} onValueChange={(v) => set("image", v)}>
+            <Select value={image} onValueChange={(v) => set("image", v)}>
               <SelectTrigger id="create-server-image">
                 <SelectValue
                   placeholder={
                     images.loading
                       ? t("create_server_image_loading")
+                      : images.error
+                        ? t("create_server_image_unavailable")
                         : enabledImages.length
                           ? t("create_server_image_choose")
                           : t("create_server_image_none")
@@ -192,6 +206,14 @@ export function CreateServerDialog({ cfg, onCreated }: Props) {
                 ))}
               </SelectContent>
             </Select>
+            {!!images.error && (
+              <div role="alert" className="flex items-center justify-between gap-3 text-xs text-destructive">
+                <span>{t("create_server_image_failed", { reason: humanizeError(images.error) })}</span>
+                <Button variant="outline" size="sm" className="shrink-0" onClick={images.reload}>
+                  {t("common:try_again")}
+                </Button>
+              </div>
+            )}
           </div>
 
           <div className="grid grid-cols-2 gap-4">

panel/src/i18n/resources/en-US/servers.json

@@ -144,6 +144,8 @@
   "create_server_image": "Image",
   "create_server_image_loading": "Loading images…",
   "create_server_image_choose": "Choose an image",
+  "create_server_image_unavailable": "Image list not loaded",
+  "create_server_image_failed": "Couldn't load the image list: {{reason}}",
   "create_server_image_none": "No whitelisted images",
   "create_server_memory": "Memory",
   "create_server_storage": "Storage",

panel/src/i18n/resources/zh-CN/servers.json

@@ -144,6 +144,8 @@
   "create_server_image": "镜像",
   "create_server_image_loading": "加载镜像列表中…",
   "create_server_image_choose": "选择一个镜像",
+  "create_server_image_unavailable": "镜像列表未读到",
+  "create_server_image_failed": "镜像列表读取失败：{{reason}}",
   "create_server_image_none": "暂无白名单镜像",
   "create_server_memory": "内存",
   "create_server_storage": "存储",