feat: move session sharing and collab rooms into a plugin (B12)

plugins/session-sharing/src/backend/deps.ts

@@ -0,0 +1,51 @@
+import type { PluginContext } from "@termix/plugin-sdk/backend";
+import type { LiveSessions } from "./live.js";
+import type { RateLimiter } from "./rate-limit.js";
+import type {
+  Directory,
+  RoomRepository,
+  ShareRepository,
+} from "./repositories.js";
+import type { CollabRoomHub } from "./room-hub.js";
+import type { CollabRuntimeStore } from "./runtime-store.js";
+
+/** Everything the routes and services share, built once in activate. */
+export interface SharingDeps {
+  ctx: PluginContext;
+  shares: ShareRepository;
+  rooms: RoomRepository;
+  directory: Directory;
+  live: LiveSessions;
+  hub: CollabRoomHub;
+  store: CollabRuntimeStore;
+  /** /resolve/:linkToken, 30 a minute per IP. */
+  resolveLimiter: RateLimiter;
+  /** Room guest links, 60 a minute per IP. */
+  guestLimiter: RateLimiter;
+  isSharingEnabledForHost: (hostId: number) => Promise<boolean>;
+}
+
+export const PROTOCOLS = ["ssh", "rdp", "vnc", "telnet"] as const;
+
+/** Where SSH shares are joined: the terminal's own socket. */
+export const TERMINAL_WS_PATH = "/plugin-ws/ssh-terminal/terminal";
+/** Where remote desktop viewers connect. */
+export const DISPLAY_WS_PATH = "/plugin-ws/remote-desktop/display";
+
+export function clientIp(req: {
+  ip?: string;
+  socket?: { remoteAddress?: string };
+}): string {
+  return req.ip || req.socket?.remoteAddress || "unknown";
+}
+
+export function isNonEmptyString(value: unknown): value is string {
+  return typeof value === "string" && value.trim().length > 0;
+}
+
+/** The acting user, which core set from the authenticated request. */
+export function actorOf(ctx: PluginContext): string {
+  const userId = ctx.currentActor();
+  if (!userId) throw new Error("No acting user");
+  return userId;
+}