feat: add display kiosk host

2026-08-23 20:50:56 -05:00
parent be5ed7853d
commit 2e0fe059c3
80 changed files with 4868 additions and 397 deletions
@@ -0,0 +1,73 @@
+import { createHash } from "node:crypto";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const readFileMock = vi.hoisted(() => vi.fn());
+
+vi.mock("node:fs/promises", () => ({ readFile: readFileMock }));
+vi.mock("@ekklesia/shell/display-assets", () => ({
+  displayHostAssetUrls: Object.freeze({
+    html: "file:///surface/browser/display/index.html",
+    script: "file:///surface/browser/display/app.js",
+  }),
+}));
+
+import {
+  createDisplayHostAssets,
+  DisplayHostAssetError,
+  loadDisplayHostAssets,
+} from "../src/display-host-assets.js";
+
+describe("display host asset loading", () => {
+  beforeEach(() => readFileMock.mockReset());
+
+  it("reads only the two declared file URLs in order and freezes one consistent snapshot", async () => {
+    const html = '<!doctype html><div id="ekklesia-display"></div>';
+    const script = "export const displayHost = true;\n";
+    readFileMock.mockResolvedValueOnce(html).mockResolvedValueOnce(script);
+
+    const assets = await loadDisplayHostAssets();
+
+    expect(readFileMock.mock.calls).toEqual([
+      [new URL("file:///surface/browser/display/index.html"), "utf8"],
+      [new URL("file:///surface/browser/display/app.js"), "utf8"],
+    ]);
+    expect(assets).toEqual({
+      html,
+      script,
+      scriptEtag: `"${createHash("sha256").update(script).digest("base64url")}"`,
+    });
+    expect(Object.isFrozen(assets)).toBe(true);
+  });
+
+  it("fails deterministically without attempting a neighboring file or exposing the read error", async () => {
+    readFileMock.mockRejectedValueOnce(
+      new Error("ENOENT /home/operator/private/surface-build secret-token"),
+    );
+
+    const failure = await loadDisplayHostAssets().catch((error: unknown) => error);
+
+    expect(readFileMock).toHaveBeenCalledTimes(1);
+    expect(failure).toBeInstanceOf(DisplayHostAssetError);
+    expect(failure).toMatchObject({
+      code: "DISPLAY_HOST_ASSET_UNAVAILABLE",
+      message: "The display host browser assets are unavailable.",
+      name: "DisplayHostAssetError",
+    });
+    expect((failure as Error).stack).toBe(
+      "DisplayHostAssetError: The display host browser assets are unavailable.",
+    );
+    const publicText = `${String(failure)}\n${JSON.stringify(failure)}\n${(failure as Error).stack}`;
+    for (const secret of ["/home/", "operator", "ENOENT", "secret-token"]) {
+      expect(publicText).not.toContain(secret);
+    }
+  });
+
+  it("rejects an empty page or script as an unavailable host build", () => {
+    for (const [html, script] of [
+      ["", "export {};"],
+      ["<html></html>", "   \n"],
+    ] as const) {
+      expect(() => createDisplayHostAssets(html, script)).toThrow(DisplayHostAssetError);
+    }
+  });
+});