feat: add logto auth and backend metrics integration

src/shared/backend-metrics-messages.ts

@@ -0,0 +1,67 @@
+import type { BackendMetricsRow } from "./backend-metrics-client";
+
+export type BackendMetricsSearchRequestMessage = {
+  type: "backend-metrics:search";
+  value: {
+    starIds: string[];
+  };
+};
+
+export type BackendMetricsResponseMessage =
+  | {
+      ok: true;
+      type: "backend-metrics:result";
+      value: {
+        rows: BackendMetricsRow[];
+      };
+    }
+  | {
+      error: string;
+      ok: false;
+      type: "backend-metrics:error";
+    };
+
+export function isBackendMetricsSearchRequestMessage(
+  value: unknown
+): value is BackendMetricsSearchRequestMessage {
+  if (!value || typeof value !== "object") {
+    return false;
+  }
+
+  const candidate = value as Partial<BackendMetricsSearchRequestMessage>;
+  return (
+    candidate.type === "backend-metrics:search" &&
+    Boolean(
+      candidate.value &&
+        typeof candidate.value === "object" &&
+        Array.isArray((candidate.value as { starIds?: unknown }).starIds) &&
+        (candidate.value as { starIds: unknown[] }).starIds.every(
+          (starId) => typeof starId === "string"
+        )
+    )
+  );
+}
+
+export function isBackendMetricsResponseMessage(
+  value: unknown
+): value is BackendMetricsResponseMessage {
+  if (!value || typeof value !== "object") {
+    return false;
+  }
+
+  const candidate = value as Partial<BackendMetricsResponseMessage>;
+  if (candidate.ok === false) {
+    return (
+      candidate.type === "backend-metrics:error" &&
+      typeof candidate.error === "string"
+    );
+  }
+
+  return Boolean(
+    candidate.ok === true &&
+      candidate.type === "backend-metrics:result" &&
+      candidate.value &&
+      typeof candidate.value === "object" &&
+      Array.isArray((candidate.value as { rows?: unknown }).rows)
+  );
+}