feat: add logto auth and backend metrics integration

src/shared/auth-messages.ts

@@ -0,0 +1,84 @@
+export type AuthRequestMessage =
+  | { type: "auth:get-state" }
+  | { type: "auth:sign-in" }
+  | { type: "auth:sign-out" }
+  | { type: "auth:get-access-token" };
+
+export interface AuthStateValue {
+  accessTokenExpiresAt?: number | null;
+  isAuthenticated: boolean;
+  lastError?: string | null;
+  resource?: string | null;
+  scopes?: string[];
+  tokenAvailable?: boolean;
+  userInfo?: {
+    email?: string;
+    name?: string;
+    sub?: string;
+    username?: string;
+  } | null;
+}
+
+export type AuthResponseMessage =
+  | { ok: true; type: "auth:state"; value: AuthStateValue }
+  | { ok: true; type: "auth:token"; value: { accessToken: string } }
+  | { ok: true; type: "auth:ack" }
+  | { ok: false; type: "auth:error"; error: string };
+
+const authRequestTypes = new Set<AuthRequestMessage["type"]>([
+  "auth:get-state",
+  "auth:sign-in",
+  "auth:sign-out",
+  "auth:get-access-token"
+]);
+
+export function isAuthRequestMessage(
+  value: unknown
+): value is AuthRequestMessage {
+  if (!value || typeof value !== "object") {
+    return false;
+  }
+
+  const candidate = value as Partial<AuthRequestMessage>;
+  return typeof candidate.type === "string" && authRequestTypes.has(candidate.type);
+}
+
+export function isAuthResponseMessage(
+  value: unknown
+): value is AuthResponseMessage {
+  if (!value || typeof value !== "object") {
+    return false;
+  }
+
+  const candidate = value as Partial<AuthResponseMessage>;
+  if (candidate.ok === false) {
+    return candidate.type === "auth:error" && typeof candidate.error === "string";
+  }
+
+  if (candidate.ok !== true || typeof candidate.type !== "string") {
+    return false;
+  }
+
+  if (candidate.type === "auth:ack") {
+    return true;
+  }
+
+  if (candidate.type === "auth:token") {
+    return Boolean(
+      candidate.value &&
+        typeof candidate.value === "object" &&
+        typeof (candidate.value as { accessToken?: unknown }).accessToken === "string"
+    );
+  }
+
+  if (candidate.type === "auth:state") {
+    return Boolean(
+      candidate.value &&
+        typeof candidate.value === "object" &&
+        typeof (candidate.value as { isAuthenticated?: unknown }).isAuthenticated ===
+          "boolean"
+    );
+  }
+
+  return false;
+}