Add BrowserBox browser integration

components/apps/Browser/StyledBrowser.ts

@@ -5,13 +5,24 @@ type StyledBrowserProps = {
 };
 
 const StyledBrowser = styled.div<StyledBrowserProps>`
-  iframe {
+  iframe,
+  .browserbox-host {
     background-color: ${({ $hasSrcDoc }) => ($hasSrcDoc ? "#fff" : "initial")};
     border: 0;
     height: calc(100% - 42px - 37px);
     width: 100%;
   }
 
+  .browserbox-host {
+    background-color: #fff;
+  }
+
+  .browserbox-host > browserbox-webview {
+    display: block;
+    height: 100%;
+    width: 100%;
+  }
+
   nav {
     background-color: rgb(87 87 87);
     display: flex;

components/apps/Browser/browserboxSession.ts

@@ -0,0 +1,262 @@
+export const DEFAULT_BROWSERBOX_SESSION_API_BASE_URL =
+  process.env.NEXT_PUBLIC_BROWSERBOX_SESSION_API_BASE_URL?.trim() ||
+  "https://win9-5.com";
+
+export const BROWSERBOX_WEBVIEW_ASSET_RELATIVE_PATH = "browserbox-webview.js";
+
+const BROWSERBOX_SCRIPT_DATA_ATTRIBUTE = "data-browserbox-webview";
+const SESSION_REQUEST_TIMEOUT_MS = 120_000;
+
+type BrowserBoxSessionSource = {
+  expiresAt?: number;
+  expires_at?: number;
+  id?: string;
+  loginLink?: string;
+  loginUrl?: string;
+  login_url?: string;
+  region?: string;
+  remainingMs?: number;
+  remaining_ms?: number;
+  sessionId?: string;
+  session_id?: string;
+};
+
+export type BrowserBoxSession = BrowserBoxSessionSource & {
+  active?: boolean;
+  loginUrl: string;
+  region: string;
+  remainingMs: number;
+  sessionId: string;
+};
+
+export type BrowserBoxTab = {
+  active?: boolean;
+  canGoBack?: boolean;
+  canGoForward?: boolean;
+  faviconDataURI?: string;
+  id?: string;
+  loading?: boolean;
+  title?: string;
+  url?: string;
+};
+
+export type BrowserBoxWebviewElement = HTMLElement & {
+  getTabs: () => Promise<BrowserBoxTab[]>;
+  goBack: () => Promise<void>;
+  goForward: () => Promise<void>;
+  navigateTo: (url: string) => Promise<void>;
+  reload: () => Promise<void>;
+  stop: () => Promise<void>;
+  whenReady: () => Promise<void>;
+};
+
+let browserBoxAssetPromise: Promise<void> | undefined;
+
+const withTrailingSlashRemoved = (value: string): string =>
+  value.endsWith("/") ? value.slice(0, -1) : value;
+
+export const normalizeBrowserBoxLoginLink = (rawLoginLink: string): string => {
+  if (typeof rawLoginLink !== "string" || rawLoginLink.trim().length === 0) {
+    return "";
+  }
+
+  try {
+    const parsed = new URL(rawLoginLink, window.location.href);
+    parsed.searchParams.set("ui", "false");
+    return parsed.href;
+  } catch {
+    return rawLoginLink.trim();
+  }
+};
+
+export const getBrowserBoxWebviewAssetUrl = (): string => {
+  if (typeof window === "undefined") {
+    return `/${BROWSERBOX_WEBVIEW_ASSET_RELATIVE_PATH}`;
+  }
+
+  return new URL(
+    BROWSERBOX_WEBVIEW_ASSET_RELATIVE_PATH,
+    document.baseURI
+  ).toString();
+};
+
+export const loadBrowserBoxWebviewAsset = async (
+  assetUrl = getBrowserBoxWebviewAssetUrl()
+): Promise<void> => {
+  if (typeof window === "undefined") return;
+  if (window.customElements?.get("browserbox-webview")) return;
+  if (!browserBoxAssetPromise) {
+    browserBoxAssetPromise = new Promise<void>((resolve, reject) => {
+      const existingScript = document.querySelector<HTMLScriptElement>(
+        `script[${BROWSERBOX_SCRIPT_DATA_ATTRIBUTE}="true"]`
+      );
+
+      if (existingScript) {
+        existingScript.addEventListener("load", () => resolve(), {
+          once: true,
+        });
+        existingScript.addEventListener(
+          "error",
+          () =>
+            reject(
+              new Error("Existing BrowserBox webview asset failed to load.")
+            ),
+          { once: true }
+        );
+        return;
+      }
+
+      const script = document.createElement("script");
+
+      script.async = true;
+      script.dataset.browserboxWebview = "true";
+      script.src = assetUrl;
+      script.addEventListener("load", () => resolve(), { once: true });
+      script.addEventListener(
+        "error",
+        () =>
+          reject(new Error(`Failed to load BrowserBox asset at ${assetUrl}.`)),
+        { once: true }
+      );
+      document.head.append(script);
+    }).finally(() => {
+      if (!window.customElements?.get("browserbox-webview")) {
+        browserBoxAssetPromise = undefined;
+      }
+    });
+  }
+
+  await browserBoxAssetPromise;
+};
+
+export class BrowserBoxSessionClient {
+  public readonly baseUrl: string;
+
+  public constructor(serverBaseUrl = DEFAULT_BROWSERBOX_SESSION_API_BASE_URL) {
+    this.baseUrl = withTrailingSlashRemoved(serverBaseUrl.trim());
+  }
+
+  public normalizeSession(raw: BrowserBoxSessionSource): BrowserBoxSession {
+    const loginUrl = raw.loginUrl || raw.login_url || raw.loginLink || "";
+    const sessionId = raw.sessionId || raw.session_id || raw.id || "";
+    let remainingMs = Number(raw.remainingMs ?? raw.remaining_ms);
+
+    if (!Number.isFinite(remainingMs)) {
+      const expiresAt = Number(raw.expiresAt ?? raw.expires_at);
+
+      remainingMs = Number.isFinite(expiresAt)
+        ? Math.max(0, expiresAt - Date.now())
+        : 0;
+    }
+
+    return {
+      ...raw,
+      loginUrl,
+      region: raw.region || "iad",
+      remainingMs,
+      sessionId,
+    };
+  }
+
+  public async createSession(): Promise<BrowserBoxSession> {
+    const controller = new AbortController();
+    const timeoutId = window.setTimeout(
+      () => controller.abort(),
+      SESSION_REQUEST_TIMEOUT_MS
+    );
+
+    try {
+      const response = await fetch(`${this.baseUrl}/api/session`, {
+        body: JSON.stringify({}),
+        credentials: "include",
+        headers: { "Content-Type": "application/json" },
+        method: "POST",
+        mode: "cors",
+        signal: controller.signal,
+      });
+      const payload = (await response.json().catch(() => ({}))) as
+        | BrowserBoxSessionSource
+        | { error?: string };
+
+      if (!response.ok) {
+        const errorMessage =
+          payload &&
+          typeof payload === "object" &&
+          "error" in payload &&
+          typeof payload.error === "string" &&
+          payload.error.length > 0
+            ? payload.error
+            : `Failed to create BrowserBox session (${response.status}).`;
+
+        throw new Error(errorMessage);
+      }
+
+      return this.normalizeSession(payload as BrowserBoxSessionSource);
+    } finally {
+      window.clearTimeout(timeoutId);
+    }
+  }
+
+  public async checkSession(): Promise<
+    { active: false } | ({ active: true } & BrowserBoxSession)
+  > {
+    try {
+      const response = await fetch(`${this.baseUrl}/api/session/status`, {
+        credentials: "include",
+        method: "GET",
+        mode: "cors",
+      });
+      const payload = (await response.json().catch(() => ({}))) as
+        | (BrowserBoxSessionSource & { active?: boolean })
+        | { active?: boolean };
+
+      if (!response.ok || !payload?.active) {
+        return { active: false };
+      }
+
+      return {
+        active: true,
+        ...this.normalizeSession(payload as BrowserBoxSessionSource),
+      };
+    } catch {
+      return { active: false };
+    }
+  }
+
+  public async notifyDisconnect(
+    sessionId: string,
+    options: { mode?: "defer" | "hard" } = {}
+  ): Promise<void> {
+    if (!sessionId) return;
+
+    const payload = JSON.stringify({
+      mode: options.mode === "hard" ? "hard" : "defer",
+      sessionId,
+    });
+    const url = `${this.baseUrl}/api/session/disconnect`;
+
+    if (typeof navigator.sendBeacon === "function") {
+      try {
+        const blob = new Blob([payload], { type: "application/json" });
+
+        navigator.sendBeacon(url, blob);
+        return;
+      } catch {
+        // Fall through to fetch keepalive.
+      }
+    }
+
+    try {
+      await fetch(url, {
+        body: payload,
+        credentials: "include",
+        headers: { "Content-Type": "application/json" },
+        keepalive: true,
+        method: "POST",
+        mode: "cors",
+      });
+    } catch (error) {
+      console.error("BrowserBox disconnect notification failed.", error);
+    }
+  }
+}