Add SharePanel component with social links and copy-to-clipboard

src/features/online-board/components/BoardDetailsHeader/SharePanel.test.tsx

@@ -0,0 +1,55 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { render, screen, fireEvent, waitFor } from "@testing-library/react";
+import { SharePanel } from "./SharePanel.js";
+
+vi.mock("@/i18n/provider.js", () => ({
+  useTranslation: () => ({ t: (k: string) => k }),
+}));
+
+describe("SharePanel", () => {
+  let writeTextMock: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    writeTextMock = vi.fn().mockResolvedValue(undefined);
+    Object.defineProperty(navigator, "clipboard", {
+      value: { writeText: writeTextMock },
+      writable: true,
+      configurable: true,
+    });
+  });
+
+  it("renders 3 social links for en locale (no Weibo)", () => {
+    render(<SharePanel url="https://example.com/flight" locale="en" onClose={() => {}} />);
+    expect(screen.getByTestId("share-facebook")).toBeTruthy();
+    expect(screen.getByTestId("share-vk")).toBeTruthy();
+    expect(screen.getByTestId("share-twitter")).toBeTruthy();
+    expect(screen.queryByTestId("share-weibo")).toBeNull();
+  });
+
+  it("renders 4 social links for zh locale (includes Weibo)", () => {
+    render(<SharePanel url="https://example.com/flight" locale="zh" onClose={() => {}} />);
+    expect(screen.getByTestId("share-facebook")).toBeTruthy();
+    expect(screen.getByTestId("share-vk")).toBeTruthy();
+    expect(screen.getByTestId("share-twitter")).toBeTruthy();
+    expect(screen.getByTestId("share-weibo")).toBeTruthy();
+  });
+
+  it("Facebook href contains encoded URL", () => {
+    render(<SharePanel url="https://example.com/flight?a=1" locale="en" onClose={() => {}} />);
+    const link = screen.getByTestId("share-facebook") as HTMLAnchorElement;
+    expect(link.href).toContain(encodeURIComponent("https://example.com/flight?a=1"));
+  });
+
+  it("copy button calls navigator.clipboard.writeText and onClose", async () => {
+    const onClose = vi.fn();
+    render(<SharePanel url="https://example.com/flight" locale="en" onClose={onClose} />);
+    fireEvent.click(screen.getByTestId("share-copy"));
+    await waitFor(() => {
+      expect(writeTextMock).toHaveBeenCalledWith("https://example.com/flight");
+    });
+    await waitFor(() => {
+      expect(onClose).toHaveBeenCalled();
+    });
+  });
+});

src/features/online-board/components/BoardDetailsHeader/SharePanel.tsx

@@ -0,0 +1,65 @@
+import type { FC } from "react";
+import { useTranslation } from "@/i18n/provider.js";
+import "./actions.scss";
+
+export interface SharePanelProps {
+  url: string;
+  locale: string;
+  onClose: () => void;
+}
+
+export const SharePanel: FC<SharePanelProps> = ({ url, locale, onClose }) => {
+  const { t } = useTranslation();
+  const encoded = encodeURIComponent(url);
+
+  const handleCopy = async () => {
+    try {
+      await navigator.clipboard.writeText(url);
+      onClose();
+    } catch {
+      // silent
+    }
+  };
+
+  return (
+    <div className="share-panel" data-testid="share-panel">
+      <a
+        data-testid="share-facebook"
+        href={`https://www.facebook.com/sharer/sharer.php?u=${encoded}`}
+        target="_blank"
+        rel="noopener noreferrer"
+      >
+        Facebook
+      </a>
+      <a
+        data-testid="share-vk"
+        href={`https://vk.com/share.php?url=${encoded}`}
+        target="_blank"
+        rel="noopener noreferrer"
+      >
+        VK
+      </a>
+      <a
+        data-testid="share-twitter"
+        href={`https://twitter.com/share?text=${encodeURIComponent("My Flight")}&url=${encoded}`}
+        target="_blank"
+        rel="noopener noreferrer"
+      >
+        Twitter
+      </a>
+      {locale === "zh" && (
+        <a
+          data-testid="share-weibo"
+          href={`https://service.weibo.com/share/share.php?url=${encoded}`}
+          target="_blank"
+          rel="noopener noreferrer"
+        >
+          Weibo
+        </a>
+      )}
+      <button type="button" data-testid="share-copy" onClick={handleCopy}>
+        {t("SHARED.COPY") || "Copy"}
+      </button>
+    </div>
+  );
+};